CA2218811C - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
- Publication number
- CA2218811C CA2218811C CA002218811A CA2218811A CA2218811C CA 2218811 C CA2218811 C CA 2218811C CA 002218811 A CA002218811 A CA 002218811A CA 2218811 A CA2218811 A CA 2218811A CA 2218811 C CA2218811 C CA 2218811C
- Authority
- CA
- Canada
- Prior art keywords
- composition
- weight
- alkylsalicylate
- zinc dialkyldithiophosphate
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 126
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 58
- 239000011701 zinc Substances 0.000 claims abstract description 49
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 48
- PICWHVQPMXIVDC-UHFFFAOYSA-J C(N)([S-])=S.O(S(=O)(=O)O)[Mo+3].C(N)([S-])=S.C(N)([S-])=S Chemical compound C(N)([S-])=S.O(S(=O)(=O)O)[Mo+3].C(N)([S-])=S.C(N)([S-])=S PICWHVQPMXIVDC-UHFFFAOYSA-J 0.000 claims abstract description 22
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011575 calcium Substances 0.000 claims abstract description 18
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 18
- 239000011777 magnesium Substances 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 18
- 230000001050 lubricating effect Effects 0.000 claims abstract description 14
- 239000002199 base oil Substances 0.000 claims abstract description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 239000011733 molybdenum Substances 0.000 claims abstract description 9
- 230000002035 prolonged effect Effects 0.000 claims abstract description 5
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 44
- 125000000217 alkyl group Chemical group 0.000 claims description 34
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 30
- 229910052796 boron Inorganic materials 0.000 claims description 30
- 125000004432 carbon atom Chemical group C* 0.000 claims description 29
- 239000003921 oil Substances 0.000 claims description 25
- 229960002317 succinimide Drugs 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 125000004429 atom Chemical group 0.000 claims description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 6
- 239000011574 phosphorus Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- -1 polyol esters Chemical class 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 150000002148 esters Chemical class 0.000 description 7
- 150000002430 hydrocarbons Chemical group 0.000 description 7
- 239000003607 modifier Substances 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000003963 antioxidant agent Substances 0.000 description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 5
- 230000003078 antioxidant effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000003599 detergent Substances 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229960001860 salicylate Drugs 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical class C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 102100022662 Guanylyl cyclase C Human genes 0.000 description 1
- 101710198293 Guanylyl cyclase C Proteins 0.000 description 1
- MQHWFIOJQSCFNM-UHFFFAOYSA-L Magnesium salicylate Chemical compound [Mg+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O MQHWFIOJQSCFNM-UHFFFAOYSA-L 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical class C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical class OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000002511 behenyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- SNCZNSNPXMPCGN-UHFFFAOYSA-N butanediamide Chemical compound NC(=O)CCC(N)=O SNCZNSNPXMPCGN-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 description 1
- ZMRQTIAUOLVKOX-UHFFFAOYSA-L calcium;diphenoxide Chemical compound [Ca+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 ZMRQTIAUOLVKOX-UHFFFAOYSA-L 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- GNVMUORYQLCPJZ-UHFFFAOYSA-N carbamothioic s-acid Chemical class NC(S)=O GNVMUORYQLCPJZ-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000003901 ceryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002194 fatty esters Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 229940072082 magnesium salicylate Drugs 0.000 description 1
- 125000006178 methyl benzyl group Chemical group 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 125000001802 myricyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001522 polyglycol ester Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003890 succinate salts Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 1
- 125000002469 tricosyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- MBBWTVUFIXOUBE-UHFFFAOYSA-L zinc;dicarbamodithioate Chemical compound [Zn+2].NC([S-])=S.NC([S-])=S MBBWTVUFIXOUBE-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
- C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
- C10M129/54—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring containing hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
- C10M133/56—Amides; Imides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
- C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
- C10M159/22—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing phenol radicals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/028—Overbased salts thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/146—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings having carboxyl groups bound to carbon atoms of six-membeered aromatic rings having a hydrocarbon substituent of thirty or more carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/26—Overbased carboxylic acid salts
- C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/086—Imides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/26—Amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/046—Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
- C10M2219/089—Overbased salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/251—Alcohol-fuelled engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
- C10N2040/28—Rotary engines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
A lubricating oil composition comprising a lubricating base oil and containi ng the following components: sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate and a mixture of 100 to 50 % by weight of calcium alkylsalicylate and 0 to 50 % by weight of magnesium alkylsalicylate, the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc dialkyldithiophosphate being from 0.04 to 0.15 % by weight of the total weight of the composition, and the tot al amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10 % by weight of the total weight of the composition. The lubricating oil composition of the invention has excellent antiwear properties, can maintain friction-reducing properties for a prolonged period of time, is excellent in both friction-reducing properties and heat resistance and is useful as a lubricating oil for intern al- combustion engines, automatic transmission gearboxes, dampers, power steering units and the like, particularly useful as a lubricating oil for internal-combustion engines.
Description
LUBRICATING OIL COMPOSITION
BACKGROUND OF THE INVENTION
The present invention relates to a novel lubricating oil composi-tion. More specifically, the present invention relates to a lubricating oil composition having excellent antiwear properties and friction-reducing properties, capable of maintaining the friction-reducing properties, for a prolonged period of time, useful as a lubricating oil for internal-combustion engines, automatic transmission gearboxes, dampers, power steering units and the like, particularly useful as a lubricating oil for internal-combustion engines.
DISCUSSION OF THE RELATED OIL
Lubricating oils have been used for internal-combustion engines, and for driving units and gears such as automatic transmission gearboxes, dampers and power steerings in order to smoothly operate them. In particular, lubricating oils for internal-combustion engines not only lubricate various sliding portions, but also cool the inside of the engines, clean and disperse those products which are produced by combustion, and furthermore prevent the rusting and corrosion of the engines.
In order to meet this requirement, various additives such as an antiwear agent, a metallic detergent, a nonash dispersant and an antioxidant are incorporated into the lubricating oils for internal-combustion engines.
It is particularly important that the lubricating oils ensure the smooth operation of the engines under all operating conditions to prevent the wear and seizure of the engines. The lubricated parts of the engines are, in most cases, under the fluid lubrication condition. However, valve-trains and the top and bottom dead centers of a piston tend to be under the boundary lubrication condition. Antiwear properties under the boundary lubrication condition are generally imparted by the addition of zinc dithiophosphate or zinc dithio-carbamate.
In order to reduce energy lost to friction and to increase fuel economy, a friction modifier is added to lubricating oils. For example, an extreme pressure agent such as a molybdenum compound or a phosphoric ester, or a compound which is an oily agent such as a fatty ester or an alkylamine has been generally used as the friction modifier.
However, while lubricating oil containing such a friction modifaer shows the effect of the friction modifier at the outset of the use thereof, it loses the effect when it undergoes oxidative degradation. Namely, the friction-reducing effect of the friction modifier is greatly affected by additives other than the friction modifier, so that it has been difficult for the lubricating oil to main-tain, for a long period of time, friction-reducing properties which are shown at the beginning of the operation of an engine.
The present invention has accomplished the objective of develop-ing a lubricating oil (engine oil) which can maintain the effect of reducing friction in engines for a long period of time under these circumstances.
SUMMARY OF THE INVENTION
It has been discovered that a lubricating oil composition having the above described properties is obtained by blending, sulfoxymolybdenum dithio-carbamate having a specific alkyl group, zinc dialkyldithiophosphate having a specific alkyl group, zinc dialkyldithiophosphate having a specific alkyl group, specific alkylsalicylate(s), and, if desired, succinimide containing boron, each in a predetermined amount infra lubricating oil base stock. The present invention has been accomplished on the basis of the above finding.
Namely, the present invention relates to the following lubricating oil compositions:
(1) a lubricating oil composition characterized by comprising a lubricating base oil and additives consisting essentially o~
(a) sulfoxymolybdenum dithiocarbamate containing a hydro-carbon group having 8 to 18 carbon atoms, (b) zinc dialkyldithiophosphate selected from the group consist-ing of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms, and a mixture of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms and zinc dialkyldithiophosphate containing a secondary alkyl group having 1 to 18 carbon atoms, and (c) a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate, the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc diallcyldithio-phosphate being from 0.04 to 0.15% by weight of the total weight of the composition, and the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10% by weight of the total weight of the composition; and (2) a lubricating oil composition characterized by comprising a lubricating base oil and additives consisting essentially of:
(a) sulfoxymolybdenum dithiocarbamate containing a hydro-carbon group having 8 to 18 carbon atoms, (b) zinc dialkyldithiophosphate selected from the group consisting of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms, and a mixture of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms and zinc dialkyl-dithiophosphate containing a secondary alkyl group having 1 to 18 carbon atoms, (c) a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate, and (d) succinimide containing boron, the amount of molybdenum derived from the sulfoxyrnolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc dialkyldithio-phosphate being from 0.04 to 0.15% by weight of the total weight of the composition, the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10% by weight of the total weight of the composition, and the amount of boron derived from the succinimide containing boron being from 0.005 to 0.06% by weight of the total weight of the composition.
DETAILED DESCRIPTION OF THE INVENTION
There is no particular limitation on the lubricating base stock oil which is used in the lubricating oil composition of the present invention, and any base oil, such as mineral oil or synthetic oil, which is commonly used for the conventional lubricating basic oils can be used.
Examples of the mineral oil include raffinates which can be obtained by subjecting raw materials for lubricating oils to solvent refining, using an aromatic extraction solvent such as phenol or furfural, hydrogenated oils which can be obtained by subjecting raw materials for lubricating oils to hydrogenation treatment, using a hydrogenation catalyst such as cobalt or molybdenum with a silica-alumina Garner, and lubricating oil fractions which can be obtained by the isomerization of waxes. Suitable base stocks include 60 neutral oil, 100 neutral oil, 150 neutral oil, 300 neutral oil, 500 neutral oil and bright stocks.
BACKGROUND OF THE INVENTION
The present invention relates to a novel lubricating oil composi-tion. More specifically, the present invention relates to a lubricating oil composition having excellent antiwear properties and friction-reducing properties, capable of maintaining the friction-reducing properties, for a prolonged period of time, useful as a lubricating oil for internal-combustion engines, automatic transmission gearboxes, dampers, power steering units and the like, particularly useful as a lubricating oil for internal-combustion engines.
DISCUSSION OF THE RELATED OIL
Lubricating oils have been used for internal-combustion engines, and for driving units and gears such as automatic transmission gearboxes, dampers and power steerings in order to smoothly operate them. In particular, lubricating oils for internal-combustion engines not only lubricate various sliding portions, but also cool the inside of the engines, clean and disperse those products which are produced by combustion, and furthermore prevent the rusting and corrosion of the engines.
In order to meet this requirement, various additives such as an antiwear agent, a metallic detergent, a nonash dispersant and an antioxidant are incorporated into the lubricating oils for internal-combustion engines.
It is particularly important that the lubricating oils ensure the smooth operation of the engines under all operating conditions to prevent the wear and seizure of the engines. The lubricated parts of the engines are, in most cases, under the fluid lubrication condition. However, valve-trains and the top and bottom dead centers of a piston tend to be under the boundary lubrication condition. Antiwear properties under the boundary lubrication condition are generally imparted by the addition of zinc dithiophosphate or zinc dithio-carbamate.
In order to reduce energy lost to friction and to increase fuel economy, a friction modifier is added to lubricating oils. For example, an extreme pressure agent such as a molybdenum compound or a phosphoric ester, or a compound which is an oily agent such as a fatty ester or an alkylamine has been generally used as the friction modifier.
However, while lubricating oil containing such a friction modifaer shows the effect of the friction modifier at the outset of the use thereof, it loses the effect when it undergoes oxidative degradation. Namely, the friction-reducing effect of the friction modifier is greatly affected by additives other than the friction modifier, so that it has been difficult for the lubricating oil to main-tain, for a long period of time, friction-reducing properties which are shown at the beginning of the operation of an engine.
The present invention has accomplished the objective of develop-ing a lubricating oil (engine oil) which can maintain the effect of reducing friction in engines for a long period of time under these circumstances.
SUMMARY OF THE INVENTION
It has been discovered that a lubricating oil composition having the above described properties is obtained by blending, sulfoxymolybdenum dithio-carbamate having a specific alkyl group, zinc dialkyldithiophosphate having a specific alkyl group, zinc dialkyldithiophosphate having a specific alkyl group, specific alkylsalicylate(s), and, if desired, succinimide containing boron, each in a predetermined amount infra lubricating oil base stock. The present invention has been accomplished on the basis of the above finding.
Namely, the present invention relates to the following lubricating oil compositions:
(1) a lubricating oil composition characterized by comprising a lubricating base oil and additives consisting essentially o~
(a) sulfoxymolybdenum dithiocarbamate containing a hydro-carbon group having 8 to 18 carbon atoms, (b) zinc dialkyldithiophosphate selected from the group consist-ing of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms, and a mixture of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms and zinc dialkyldithiophosphate containing a secondary alkyl group having 1 to 18 carbon atoms, and (c) a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate, the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc diallcyldithio-phosphate being from 0.04 to 0.15% by weight of the total weight of the composition, and the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10% by weight of the total weight of the composition; and (2) a lubricating oil composition characterized by comprising a lubricating base oil and additives consisting essentially of:
(a) sulfoxymolybdenum dithiocarbamate containing a hydro-carbon group having 8 to 18 carbon atoms, (b) zinc dialkyldithiophosphate selected from the group consisting of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms, and a mixture of zinc dialkyldithiophosphate containing a primary alkyl group having 1 to 18 carbon atoms and zinc dialkyl-dithiophosphate containing a secondary alkyl group having 1 to 18 carbon atoms, (c) a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate, and (d) succinimide containing boron, the amount of molybdenum derived from the sulfoxyrnolybdenum dithiocarbamate being from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorus derived from the zinc dialkyldithio-phosphate being from 0.04 to 0.15% by weight of the total weight of the composition, the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate being from 1 to 10% by weight of the total weight of the composition, and the amount of boron derived from the succinimide containing boron being from 0.005 to 0.06% by weight of the total weight of the composition.
DETAILED DESCRIPTION OF THE INVENTION
There is no particular limitation on the lubricating base stock oil which is used in the lubricating oil composition of the present invention, and any base oil, such as mineral oil or synthetic oil, which is commonly used for the conventional lubricating basic oils can be used.
Examples of the mineral oil include raffinates which can be obtained by subjecting raw materials for lubricating oils to solvent refining, using an aromatic extraction solvent such as phenol or furfural, hydrogenated oils which can be obtained by subjecting raw materials for lubricating oils to hydrogenation treatment, using a hydrogenation catalyst such as cobalt or molybdenum with a silica-alumina Garner, and lubricating oil fractions which can be obtained by the isomerization of waxes. Suitable base stocks include 60 neutral oil, 100 neutral oil, 150 neutral oil, 300 neutral oil, 500 neutral oil and bright stocks.
Examples of the synthetic oil include poly alpha-olefin oligomers, polybutenes, alkylbenzenes, polyol esters, polyglycol esters, dibasic esters, phosphoric esters and silicone oils. These base oils belonging to mineral oil or synthetic oil can be used either singly or in combination of two or more.
Further, a mixture of mineral oil and synthetic oil can also be used.
Those oils which have a viscosity at 100°C of 3 to 20 cSt are preferable as the base oils for use in the lubricating oil composition of the present invention. Of these, hydrocracked oils and wax-isomerized oils which contain 3% by weight or less of aromatics, 50 ppm or less of sulfur and 50 ppm or less of nitrogen are particularly preferred.
As the sulfoxymolybdenum dithiocarbamate to be incorporated into the lubricant oil composition in accordance with the present invention, use may be made of a compound having the following formula [ 1 ]:
Rlv R2~1-C-S- -Mo2SmOn [1]
wherein R1 and R2, are independently a hydrocarbon group with 8 to 18 carbon atoms and may or may not be the same, m and n are a positive integer provided thatm+n=4.
Examples of the hydrocarbon group having 8 to 18 carbon atoms, represented by R1 and R2 in the general formula [I] include hydrocarbon groups such as an alkyl group having 8 to 18 carbon atoms, an alkenyl group having 8 to 18 carbon atoms, a cycloalkyl group having 8 to 18 carbon atoms, an aryl group having 8 to 18 carbon atoms, an alkylaryl group and an arylalkyl group. The above alkyl and alkenyl groups may be linear or branched. In the lubricating oil composition of the present invention, it is particularly preferable that the hydro-carbon group represented by Rl and R2 have 8 carbon atoms.
Specific examples of the hydrocarbon group represented by R1 and R2 include octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, octenyl, noneyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, hexadecenyl, octadecenyl, dimethylcyclohexyl, ethylcyclohexyl, methylcyclohexylinethyl, cyclohexylethyl, propylcyclohexyl, butylcyclohexyl, heptylcyclohexyl, di-methylphenyl, methylbenzyl, phenethyl, naphthyl and dimethylnaphthyl groups.
In the lubricating oil composition of the present invention, either one or two or more sulfoxymolybdenum dithiocarbamates can be used. Further, the sulfoxymolybdenum dithiocarbamate is incorporated into the composition so that the amount of molybdenum derived from the sulfoxymolybdenum dithio-carbamate can be from 200 to 1000 ppm (weight basis), preferably from 300 to 800 ppm (weight basis) of the total weight of the composition. When the sulfoxymolybdenum dithiocarbamate is incorporated in such an amount that the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is less than 200 ppm (weight basis) of the total weight of the composition, the effect of improving friction-reducing properties cannot be sufficiently obtained.
On the other hand, when the sulfoxymolybdenum dithiocarbamate is in-corporated in such an amount that the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is in excess of 1000 ppm (weight basis) of the total weight of the composition, the effect which is expected from such an amount of the sulfoxymolybdenum dithiocarbamate cannot be obtained, and sludge or the like tends to be brought about.
As the zinc dialkyldithiophosphate to be incorporated into the lubricant oil composition in accordance with the present invention, use may be made of a compound having the following formula [2]:
R3-O\~ -R4-O S -Zn [2]
wherein R3 and R4 are independently a primary and secondary allcyl group with 1 to 18, preferably 3 to 18 carbon atoms and may or may not be the same.
In the lubricating oil composition of the present invention, any of the following ones can be used as the zinc dialkyldithiophosphate: zinc dialkyl-dithiophosphate represented by the general formula [2] in which all of the alkyl _ 'J _ groups are primary; a mixture of zinc dialkyldithiophosphate in which all of the alkyl groups are primary and zinc dialkyldithiophosphate in which all of the alkyl groups is primary and the other alkyl group is secondary; zinc dialkyl-dithiophosphate in which one of the alkyl groups are secondary; and a mixture thereof.
The primary and secondary alkyl groups represented by R3 and R4 in the general formula [2] are propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl and dodecyl groups. However, zinc dialkyldithiophosphate containing a primary or secondary alkyl group having 3 to 12 carbon atoms is preferably used in the lubricating oil composition of the present invention.
In the lubricating oiI composition of the present invention, the zinc dialkylditl>iophosphate is incorporated so that the amount of phosphorus derived from the zinc dialkyldithiophosphate can be from 0.04 to 0.15% by weight, preferably from 0.06 to 0.12% by weight of the total weight of the composition.
When the zinc dialkyldithiophosphate is incorporated into the composition in such an amount that the amount of phosphorus derived from the zinc dialkyl-dithiophosphate is less than 0.04% by weight of the total weight of the composition, the resulting composition is poor in antiwear properties, in addi-tion, cannot have a satisfactorily low coefficient of friction under the operating conditions of high oil temperatures and low rotational speeds. On the other hand, when the zinc dialkyldithiophosphate is incorporated in such an amount that the amount of phosphorus derived from the zinc dialkyldithiophosphate is in excess of 0.15% by weight of the total weight of the composition, the effect which is expected from such an amount of the zinc dialkyldithiophosphate cannot be obtained.
As the calcium or magnesium alkylsalicylate to be used in the lubricant oil composition in accordance with the present invention, use may be made of a compound having the following formula [3]:
\ /C-O-M-O-C~
RS~~ I ~R6 / \OH HO
_g_ wherein M is calcium or magnesium, and RS and R6 are independently alkyl group with 8 to 30 carbon atoms and may or may not be the same.
T'he alkyl group having 8 to 30 carbon atoms represented by RS
and R6 in the general formula [3J may be linear, branched or cyclic one.
Examples of such an allcyl group include octyl, nonyl, decyl, dodecyl, pentadecyl, octadecyl, eicosyl, docosyl, tricosyl, hexacosyl, triacontyl, dimethylcyclohexyl, ethylcyclohexyl, methylcyclohexylinethyl and cyclo-hexylethyl groups.
In the lubricating oil composition of the present invention, the alkylsalicylate is incorporated as a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate. The mixture is incorporated in such an amount that the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate is from 0.5 to 10% by weight, preferably from 1 to 6% by weight of the total weight of the composition. When the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate is less than 0.5% by weight of the total weight of the composition, cleaning effect cannot be su~ciently obtained. On the other hand, when the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate is in excess of 10% by weight of the total weight of the composition, the effect which is expected from such an amount of the mixture cannot be obtained, and ash content is rather increased. Such an amount is therefore unfavorable.
In the lubricating oil composition of the present invention, it is preferable to adjust the total base number of the composition to 3 to 10, preferably 4 to 7. The base number of the composition can be determined in accordance with JIS K2501. The total base number of the composition can be adjusted by selecting calcium alkylsalicylate and magnesium alkylsalicylate, each having a proper base number.
Succinimide containing boron can be incorporated into the lubricating oil composition of the present invention, if desired.
The boron/nitrogen ratio regarding the number of the atoms contained in the succinimide containing boron which is used in the lubricating _g_ oil composition of the present invention is from 0.05 to 1.5, preferably from 0.1 to 0.8. VVhen the boron/nitrogen ratio is less than 0.05, the resulting composition cannot have sufficiently-improved friction-reducing properties. On the other hand, when the boron/nitrogen ratio exceeds 1.5, the friction-reducing properties of the resulting composition are impaired.
In the lubricating oil composition of the present invention, the succinimide containing boron is incorporated so that the amount of boron derived from the succinimide containing boron can be from 0.005 to 0.06% by weight, preferably from 0.01 to 0.04% by weight of the total weight of the composition. When the succinimide containing boron is used in such an amount that the amount of boron derived from the succinimide containing boron is less than 0.005% by weight of the total weight of the composition, the resulting composition cannot have sufficiently-improved friction-reducing properties. On the other hand, when the succinimide containing boron is used in such an amount that the amount of boron derived from the succinimide containing boron is in excess of 0.06% by weight of the total weight of the composition, the effect which is expected from such an amount of the succinimide containing boron cannot be obtained.
Various additives which have been usually incorporated into the conventional lubricating oils, such as a metallic detergent, another friction modifier., an antioxidant, a viscosity index improver, a pour point depressant, an anti-foaming agent, other antiwear agent(s), a rust preventive, an ashless dispersant and a corrosion inhibitor, can be added, if necessary, to the lubricating oil composition of the present invention within such a limit that the object of the present invention can be fully attained.
Examples of the metallic detergent include calcium sulfonate, magnesium sulfonate, barium sulfonate, calcium phenate, barium phenate, calcium salicylate and magnesium salicylate. In general, the metallic detergent is used in the composition in an amount of 0.1 to 5% by weight.
Examples of the friction modifier include partial esters of poly-valent alcohols, amines, amides and ester sulfides.
Examples of the antioxidant include amine antioxidants such as alkylated diphenylamines, phenyl-alpha-naphthylamines and alkylated alpha-naphthylamines, and phenolic antioxidants such as 2,6-di-t-butyl-4-methylphenol and 4,4'-methylene-bis(2,6-di-t-butylphenol). In general, such an antioxidant is used in the composition in an amount of 0.05 to 2% by weight.
Examples of the viscosity index improver include those of poly-methacrylate type, polyisobutylene type, ethylene-propylene copolymer type and stryene-butadiene hydrogenated copolymer type. In general, such an improver is used in the composition in an amount of 0.5 to 35% by weight.
Examples of the pour point depressant include polyalkyl-methacrylate, a condensation product of chlorinated paraffin and naphthalene and alkylated polystyrene.
Examples of the anti-foaming agent include dimethyl polysiloxane and polyacrylic acid.
Examples of the antiwear agent include metallic salts of thiophosphoric acid, metallic salts of thiocarbamic acid, sulfur compounds, phosphoric esters and phosphorous esters. In general, this agent is used in the composition in an amount of 0.05 to 5.0% by weight.
Examples of the rust preventive additive include fatty acids, partial esters of allcenyl succinates, fatty acid soaps, alkylsulfonates, fatty polyvalent alcohol esters, fatty amines, paraffin oxides and alkyl polyoxyethylene ethers.
Examples of the ashless dispersant include those of succinimide type, succinamide type, benzylamine type and ester type. In general, such a dispersant is used in the composition in an amount of 0.5 to 7% by weight.
Examples of the corrosion inhibitor include benzotriazole and benzoimidazole.
Examples a The present invention will now be explained more specifically by referring to the following Examples. However, the present invention is not limited by these examples in any way.
The coefficients of friction of the lubricating oil compositions were determined by a reciprocating sliding friction tester [SRV Friction Tester]
under the conditions of a frequency of 50 Hz, an amplitude of 3 mm, a load of 25 N, a temperature of 80°C and a test time of 25 minutes.
Examples 1 to 9 and Comparative Examples 1 and 2 The lubricating oil compositions of these examples are those which contain sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate and alkylsalicylate. Each lubricating oil composition was prepared by blending the components whose type and amount are shown in Table 1 with a base oil ( 100 neutral ail having a viscosity at 100°C of 4.4 mm/s2). The coefficient of friction of each composition thus obtained was determined right after the composition was prepared, and after the composition was oxidized by being held at 150°C for 72 hours. The results are shown in Table 1.
A
c, o o ~o .n p _> N ~ i ~ ~ ~ ~ ~ r o O N p O
X
p 7 O p '~
Li et Ov U - o ~ ~ - . ~ ~
~
_ o M
c o O O ~ ~ O N
O~O ~ , , , _ O
O C
O O O O N
00O ~ ~ , , _ N
O O
O O O ' f~O ~ ~ , , , O O
p v1 W N M v1 ~DO ~ O O , , , _ O O M .., O O
U
f~ M ~ M
h O ~ O O ~ , ~
M
a o 0 p Wit'O ~ O ~
~ M
O
O O O ~ ~
G.
V O
..C
~- O U
O O N U ~ S 'Q
M ~ O ~ ~ ~ , ~ O
00O M .~. .~...C ' ,C
O O ""' ~ O
~ ~ a 0 ;., p p x o ~ ' s s_ N O ~ a-. , ~ , ~ ~ ~ _ O " S) '~
0o p M Z7 c o z y ::, zz~ o O p N cV = ~ r, 2 .-.O s ~ ~ , ~ ~ ~ ~ O
'cf O M O O ~ ~ ~ .tn C v N U
U ~ C
~ 'N
o .
~, ~ U
n ~ -.o a ~ _ _ o 'r~'~ C' . a G c c C V U '~, v ea ~, y' ~~ _ s U N U ie_ ~ p .
E...Q U U ~ N ~ io ~
' ~
_ _ _ a O O O _ . N ' ~ C ea~ a c,. c~ C W..
O in ~ a CO ' N
-- L ~ ~ Gr r. j ,-on~ ~ V U ...
~ V E
pp w "
= U ~ [-, ~ C, U U o o V c~ a ~
~ : ~. ,n _ C c 'a.~n.- ~ ~ = o~~N
~ .*
o o 0 o U 'oo L , N vp 0 c ~ a, a V ~ c''~
~ e o '00 0 o U ~ ~ ~ U
'~ ~ ~ U U
' E U
a. H
_ C C - C C C O C U p ~ E" U c ' ~
C O ~
Q \
' .
C ~ _ U U
.
a a a~ aN ~ ~c ~
z When the lubricating oil compositions of Examples 1 to 9 accord-ing to the present invention were used for the determination of the coefficient of friction thereof, it was found that all of the compositions had a low coefficient of friction and excellent friction-reducing properties. Moreover, almost no change was found in the coefficient of friction even after the compositions were heated at 150°C for 72 hours and oxidized. Therefore, it can be understood that the lubricatW g oil compositions of the invention are excellent in heat resistance. In contrast, in the case of the lubricating oil composition of Comparative Example 1, which was prepared by using only zinc dialkyldithiophosphate having a secondary alkyl group as the zinc dialkyldithiophosphate, the coefficient of friction determined right after the composition was prepared was already high.
Moreover, the coe~cient of fi-iction became higher after the composition was heated at 150°C for 72 hours and oxidized. It can thus be seen that this comparative composition is poor in both friction-reducing properties and heat resistance. In the case of the lubricating oil composition of Comparative Example 2, which was prepared by using calcium sulfonate instead of alkyl-salicylate, the coefficient of friction became higher after the composition was heated at 150°C for 72 hours and oxidized. It can thus be known that this comparative composition is poor in heat resistance.
Examples 10 to 18 and Comparative Examples 3 and 4 The lubricating oil compositions of these examples are those which contain sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate, alkyl-salicylate and succinimide containing boron. Each lubricating oil composition was prepared by blending the components whose type and amount are shown in Table 2 with a base oil (100 neutral oil having a viscosity at 100°C
of 4.4 mm/s2). The coefficient of friction of each composition thus obtained was determined right after the composition was prepared, and after the composition was oxidized by being held at 150°C for 72 hours. The results are shown in Table 2.
: ~ o ~ .no o -r "
... et Q N ~
~
O O O
R
C.
X
O C O h ~D= N
W
U M o ~~ "~o M
O O O
00~ ~ ~
~ h ~ O~Ov ~ . O O O
.t p O O O
I~~ ~ O h ~ C1O~
~ ~ ~~ ~j~ ~O O O
O O O
~p~ ~ O O
~ ,nO O O
~ .* ~ N ...
O O O
O nO
.r M
O O O O
v c_.
~ ~' ' - '~0 0 0 T p M
O
W O O
N
o '~
o ' 'nc o 0 i ..r o e o c o d OO v_OvDvD ca Q
N ' O '~O C O 4% C p M O O O ~ .D a ' C
f0 e O
_ .r v0v1v7 V y R
~ t 'D
' h '~~ OvOv O
0 0 0 ~o a x ''' ~
' o c o ~ o =
a o - :, ~ ~
o ,~, '~o a c M '~O O O :p 'C ~
~
c c c z z v zz o , G o U v eV
. ~ =
Y V
Tf A a : co~ 'b ,.
o T~ 'N
tC
\
N : iv .. ~ o _ r ~ ea ' ~ ~
UN U :a~ ~ _ ..
E" _ . ~
00 M p N ~ C
O c.0~
(p O oU V - o ' N ' ' ae u O 'D c ~ =
a ~ ' '~
~' '~ C
tn O O ..
V ..
2 2 '=t..~ 'w~a ~
U Uo L V U ai.~v 0 D ~ 4 ' ~ ~ N
5- te s . . a U a c'O ~'N
O O..-.~ U V
O r C
U
~c.~ ~" o c o ' ' 00 o ~ W ' ~ M
'r C U
0 a ~ ~o ~ U U U U
' C GC C C ~ E C V
~ 'd C
O OO O j O ' CO _ C O ' ~
' ' E : _~ ~ ~7U V
C' Cs cJ~ cO~C O. O
a a. a~ U ~ U a c a ~
~. ~ .~ z WO 96!37582 PCT/US95/06620 The lubricating oil compositions of Examples 10 to 18 according to the present invention, into which succinimide containing boron was incorporated, had a coeffident of fi-iction lower than that of any of the lubricat-ing oil compositions of Examples 1 to 9 which contain no succinimide contain-ing boron, and showed excellent friction-reducing properties. Moreover, almost no change was found in the coefficient of friction even after the compositions were heated at 150°C for 72 hours and oxidized. Therefore, it can be seen that the lubricating oil compositions of the present invention are excellent in heat resistance. In contrast, in the case of the lubricating oil composition of Comparative Example 3, which was prepared by using only zinc dialkyldithio-phosphate having a secondary alkyl group as the zinc dialkyldithiophosphate, the coefficient of friction determined right after the composition was prepared was already high, even though succinimide containing boron was incorporated into the composition. Moreover, the coefficient of fiiction became higher after the composition was heated at 150°C for 72 hours and oxidized. It can thus be seen that this comparative composition is poor in both friction-reducing properties and heat resistance. In the case of the lubricating oil composition of Compara-tive Example 4, which was prepared by using calcium sulfonate instead of alkylsalieylate, the coefficient of fi-iction became higher after the composition was heated at 150°C for 72 hours and oxidized, even though succinimide containing boron was incorporated into the composition. It can thus be known that this comparative composition is poor in heat resistance.
The lubricating oil compositions of the present invention prepared by blending sulfoxymolybdenum dithiocarbamate having a specific structure, zinc dialkyldithiophosphate, alkylsalicylate, and, if desired, succinimide contain-ing boron with a base oil, therefore, have excellent antiwear properties, can maintain fi-iction-reducing properties for a prolonged period of time, and are excellent in both fi-iction-reducing properties and heat resistance. The lubricat-ing oil compositions of the present invention are thus useful as lubricating oils for internal-combustion engines, automatic transmission gearboxes, dampers, power steering units and the like, particularly useful as lubricating oils for internal-combustion engines.
Further, a mixture of mineral oil and synthetic oil can also be used.
Those oils which have a viscosity at 100°C of 3 to 20 cSt are preferable as the base oils for use in the lubricating oil composition of the present invention. Of these, hydrocracked oils and wax-isomerized oils which contain 3% by weight or less of aromatics, 50 ppm or less of sulfur and 50 ppm or less of nitrogen are particularly preferred.
As the sulfoxymolybdenum dithiocarbamate to be incorporated into the lubricant oil composition in accordance with the present invention, use may be made of a compound having the following formula [ 1 ]:
Rlv R2~1-C-S- -Mo2SmOn [1]
wherein R1 and R2, are independently a hydrocarbon group with 8 to 18 carbon atoms and may or may not be the same, m and n are a positive integer provided thatm+n=4.
Examples of the hydrocarbon group having 8 to 18 carbon atoms, represented by R1 and R2 in the general formula [I] include hydrocarbon groups such as an alkyl group having 8 to 18 carbon atoms, an alkenyl group having 8 to 18 carbon atoms, a cycloalkyl group having 8 to 18 carbon atoms, an aryl group having 8 to 18 carbon atoms, an alkylaryl group and an arylalkyl group. The above alkyl and alkenyl groups may be linear or branched. In the lubricating oil composition of the present invention, it is particularly preferable that the hydro-carbon group represented by Rl and R2 have 8 carbon atoms.
Specific examples of the hydrocarbon group represented by R1 and R2 include octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, octenyl, noneyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, hexadecenyl, octadecenyl, dimethylcyclohexyl, ethylcyclohexyl, methylcyclohexylinethyl, cyclohexylethyl, propylcyclohexyl, butylcyclohexyl, heptylcyclohexyl, di-methylphenyl, methylbenzyl, phenethyl, naphthyl and dimethylnaphthyl groups.
In the lubricating oil composition of the present invention, either one or two or more sulfoxymolybdenum dithiocarbamates can be used. Further, the sulfoxymolybdenum dithiocarbamate is incorporated into the composition so that the amount of molybdenum derived from the sulfoxymolybdenum dithio-carbamate can be from 200 to 1000 ppm (weight basis), preferably from 300 to 800 ppm (weight basis) of the total weight of the composition. When the sulfoxymolybdenum dithiocarbamate is incorporated in such an amount that the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is less than 200 ppm (weight basis) of the total weight of the composition, the effect of improving friction-reducing properties cannot be sufficiently obtained.
On the other hand, when the sulfoxymolybdenum dithiocarbamate is in-corporated in such an amount that the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is in excess of 1000 ppm (weight basis) of the total weight of the composition, the effect which is expected from such an amount of the sulfoxymolybdenum dithiocarbamate cannot be obtained, and sludge or the like tends to be brought about.
As the zinc dialkyldithiophosphate to be incorporated into the lubricant oil composition in accordance with the present invention, use may be made of a compound having the following formula [2]:
R3-O\~ -R4-O S -Zn [2]
wherein R3 and R4 are independently a primary and secondary allcyl group with 1 to 18, preferably 3 to 18 carbon atoms and may or may not be the same.
In the lubricating oil composition of the present invention, any of the following ones can be used as the zinc dialkyldithiophosphate: zinc dialkyl-dithiophosphate represented by the general formula [2] in which all of the alkyl _ 'J _ groups are primary; a mixture of zinc dialkyldithiophosphate in which all of the alkyl groups are primary and zinc dialkyldithiophosphate in which all of the alkyl groups is primary and the other alkyl group is secondary; zinc dialkyl-dithiophosphate in which one of the alkyl groups are secondary; and a mixture thereof.
The primary and secondary alkyl groups represented by R3 and R4 in the general formula [2] are propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl and dodecyl groups. However, zinc dialkyldithiophosphate containing a primary or secondary alkyl group having 3 to 12 carbon atoms is preferably used in the lubricating oil composition of the present invention.
In the lubricating oiI composition of the present invention, the zinc dialkylditl>iophosphate is incorporated so that the amount of phosphorus derived from the zinc dialkyldithiophosphate can be from 0.04 to 0.15% by weight, preferably from 0.06 to 0.12% by weight of the total weight of the composition.
When the zinc dialkyldithiophosphate is incorporated into the composition in such an amount that the amount of phosphorus derived from the zinc dialkyl-dithiophosphate is less than 0.04% by weight of the total weight of the composition, the resulting composition is poor in antiwear properties, in addi-tion, cannot have a satisfactorily low coefficient of friction under the operating conditions of high oil temperatures and low rotational speeds. On the other hand, when the zinc dialkyldithiophosphate is incorporated in such an amount that the amount of phosphorus derived from the zinc dialkyldithiophosphate is in excess of 0.15% by weight of the total weight of the composition, the effect which is expected from such an amount of the zinc dialkyldithiophosphate cannot be obtained.
As the calcium or magnesium alkylsalicylate to be used in the lubricant oil composition in accordance with the present invention, use may be made of a compound having the following formula [3]:
\ /C-O-M-O-C~
RS~~ I ~R6 / \OH HO
_g_ wherein M is calcium or magnesium, and RS and R6 are independently alkyl group with 8 to 30 carbon atoms and may or may not be the same.
T'he alkyl group having 8 to 30 carbon atoms represented by RS
and R6 in the general formula [3J may be linear, branched or cyclic one.
Examples of such an allcyl group include octyl, nonyl, decyl, dodecyl, pentadecyl, octadecyl, eicosyl, docosyl, tricosyl, hexacosyl, triacontyl, dimethylcyclohexyl, ethylcyclohexyl, methylcyclohexylinethyl and cyclo-hexylethyl groups.
In the lubricating oil composition of the present invention, the alkylsalicylate is incorporated as a mixture of 100 to 50% by weight of calcium alkylsalicylate and 0 to 50% by weight of magnesium alkylsalicylate. The mixture is incorporated in such an amount that the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate is from 0.5 to 10% by weight, preferably from 1 to 6% by weight of the total weight of the composition. When the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate is less than 0.5% by weight of the total weight of the composition, cleaning effect cannot be su~ciently obtained. On the other hand, when the total amount of the calcium alkylsalicylate and the magnesium alkylsalicylate is in excess of 10% by weight of the total weight of the composition, the effect which is expected from such an amount of the mixture cannot be obtained, and ash content is rather increased. Such an amount is therefore unfavorable.
In the lubricating oil composition of the present invention, it is preferable to adjust the total base number of the composition to 3 to 10, preferably 4 to 7. The base number of the composition can be determined in accordance with JIS K2501. The total base number of the composition can be adjusted by selecting calcium alkylsalicylate and magnesium alkylsalicylate, each having a proper base number.
Succinimide containing boron can be incorporated into the lubricating oil composition of the present invention, if desired.
The boron/nitrogen ratio regarding the number of the atoms contained in the succinimide containing boron which is used in the lubricating _g_ oil composition of the present invention is from 0.05 to 1.5, preferably from 0.1 to 0.8. VVhen the boron/nitrogen ratio is less than 0.05, the resulting composition cannot have sufficiently-improved friction-reducing properties. On the other hand, when the boron/nitrogen ratio exceeds 1.5, the friction-reducing properties of the resulting composition are impaired.
In the lubricating oil composition of the present invention, the succinimide containing boron is incorporated so that the amount of boron derived from the succinimide containing boron can be from 0.005 to 0.06% by weight, preferably from 0.01 to 0.04% by weight of the total weight of the composition. When the succinimide containing boron is used in such an amount that the amount of boron derived from the succinimide containing boron is less than 0.005% by weight of the total weight of the composition, the resulting composition cannot have sufficiently-improved friction-reducing properties. On the other hand, when the succinimide containing boron is used in such an amount that the amount of boron derived from the succinimide containing boron is in excess of 0.06% by weight of the total weight of the composition, the effect which is expected from such an amount of the succinimide containing boron cannot be obtained.
Various additives which have been usually incorporated into the conventional lubricating oils, such as a metallic detergent, another friction modifier., an antioxidant, a viscosity index improver, a pour point depressant, an anti-foaming agent, other antiwear agent(s), a rust preventive, an ashless dispersant and a corrosion inhibitor, can be added, if necessary, to the lubricating oil composition of the present invention within such a limit that the object of the present invention can be fully attained.
Examples of the metallic detergent include calcium sulfonate, magnesium sulfonate, barium sulfonate, calcium phenate, barium phenate, calcium salicylate and magnesium salicylate. In general, the metallic detergent is used in the composition in an amount of 0.1 to 5% by weight.
Examples of the friction modifier include partial esters of poly-valent alcohols, amines, amides and ester sulfides.
Examples of the antioxidant include amine antioxidants such as alkylated diphenylamines, phenyl-alpha-naphthylamines and alkylated alpha-naphthylamines, and phenolic antioxidants such as 2,6-di-t-butyl-4-methylphenol and 4,4'-methylene-bis(2,6-di-t-butylphenol). In general, such an antioxidant is used in the composition in an amount of 0.05 to 2% by weight.
Examples of the viscosity index improver include those of poly-methacrylate type, polyisobutylene type, ethylene-propylene copolymer type and stryene-butadiene hydrogenated copolymer type. In general, such an improver is used in the composition in an amount of 0.5 to 35% by weight.
Examples of the pour point depressant include polyalkyl-methacrylate, a condensation product of chlorinated paraffin and naphthalene and alkylated polystyrene.
Examples of the anti-foaming agent include dimethyl polysiloxane and polyacrylic acid.
Examples of the antiwear agent include metallic salts of thiophosphoric acid, metallic salts of thiocarbamic acid, sulfur compounds, phosphoric esters and phosphorous esters. In general, this agent is used in the composition in an amount of 0.05 to 5.0% by weight.
Examples of the rust preventive additive include fatty acids, partial esters of allcenyl succinates, fatty acid soaps, alkylsulfonates, fatty polyvalent alcohol esters, fatty amines, paraffin oxides and alkyl polyoxyethylene ethers.
Examples of the ashless dispersant include those of succinimide type, succinamide type, benzylamine type and ester type. In general, such a dispersant is used in the composition in an amount of 0.5 to 7% by weight.
Examples of the corrosion inhibitor include benzotriazole and benzoimidazole.
Examples a The present invention will now be explained more specifically by referring to the following Examples. However, the present invention is not limited by these examples in any way.
The coefficients of friction of the lubricating oil compositions were determined by a reciprocating sliding friction tester [SRV Friction Tester]
under the conditions of a frequency of 50 Hz, an amplitude of 3 mm, a load of 25 N, a temperature of 80°C and a test time of 25 minutes.
Examples 1 to 9 and Comparative Examples 1 and 2 The lubricating oil compositions of these examples are those which contain sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate and alkylsalicylate. Each lubricating oil composition was prepared by blending the components whose type and amount are shown in Table 1 with a base oil ( 100 neutral ail having a viscosity at 100°C of 4.4 mm/s2). The coefficient of friction of each composition thus obtained was determined right after the composition was prepared, and after the composition was oxidized by being held at 150°C for 72 hours. The results are shown in Table 1.
A
c, o o ~o .n p _> N ~ i ~ ~ ~ ~ ~ r o O N p O
X
p 7 O p '~
Li et Ov U - o ~ ~ - . ~ ~
~
_ o M
c o O O ~ ~ O N
O~O ~ , , , _ O
O C
O O O O N
00O ~ ~ , , _ N
O O
O O O ' f~O ~ ~ , , , O O
p v1 W N M v1 ~DO ~ O O , , , _ O O M .., O O
U
f~ M ~ M
h O ~ O O ~ , ~
M
a o 0 p Wit'O ~ O ~
~ M
O
O O O ~ ~
G.
V O
..C
~- O U
O O N U ~ S 'Q
M ~ O ~ ~ ~ , ~ O
00O M .~. .~...C ' ,C
O O ""' ~ O
~ ~ a 0 ;., p p x o ~ ' s s_ N O ~ a-. , ~ , ~ ~ ~ _ O " S) '~
0o p M Z7 c o z y ::, zz~ o O p N cV = ~ r, 2 .-.O s ~ ~ , ~ ~ ~ ~ O
'cf O M O O ~ ~ ~ .tn C v N U
U ~ C
~ 'N
o .
~, ~ U
n ~ -.o a ~ _ _ o 'r~'~ C' . a G c c C V U '~, v ea ~, y' ~~ _ s U N U ie_ ~ p .
E...Q U U ~ N ~ io ~
' ~
_ _ _ a O O O _ . N ' ~ C ea~ a c,. c~ C W..
O in ~ a CO ' N
-- L ~ ~ Gr r. j ,-on~ ~ V U ...
~ V E
pp w "
= U ~ [-, ~ C, U U o o V c~ a ~
~ : ~. ,n _ C c 'a.~n.- ~ ~ = o~~N
~ .*
o o 0 o U 'oo L , N vp 0 c ~ a, a V ~ c''~
~ e o '00 0 o U ~ ~ ~ U
'~ ~ ~ U U
' E U
a. H
_ C C - C C C O C U p ~ E" U c ' ~
C O ~
Q \
' .
C ~ _ U U
.
a a a~ aN ~ ~c ~
z When the lubricating oil compositions of Examples 1 to 9 accord-ing to the present invention were used for the determination of the coefficient of friction thereof, it was found that all of the compositions had a low coefficient of friction and excellent friction-reducing properties. Moreover, almost no change was found in the coefficient of friction even after the compositions were heated at 150°C for 72 hours and oxidized. Therefore, it can be understood that the lubricatW g oil compositions of the invention are excellent in heat resistance. In contrast, in the case of the lubricating oil composition of Comparative Example 1, which was prepared by using only zinc dialkyldithiophosphate having a secondary alkyl group as the zinc dialkyldithiophosphate, the coefficient of friction determined right after the composition was prepared was already high.
Moreover, the coe~cient of fi-iction became higher after the composition was heated at 150°C for 72 hours and oxidized. It can thus be seen that this comparative composition is poor in both friction-reducing properties and heat resistance. In the case of the lubricating oil composition of Comparative Example 2, which was prepared by using calcium sulfonate instead of alkyl-salicylate, the coefficient of friction became higher after the composition was heated at 150°C for 72 hours and oxidized. It can thus be known that this comparative composition is poor in heat resistance.
Examples 10 to 18 and Comparative Examples 3 and 4 The lubricating oil compositions of these examples are those which contain sulfoxymolybdenum dithiocarbamate, zinc dialkyldithiophosphate, alkyl-salicylate and succinimide containing boron. Each lubricating oil composition was prepared by blending the components whose type and amount are shown in Table 2 with a base oil (100 neutral oil having a viscosity at 100°C
of 4.4 mm/s2). The coefficient of friction of each composition thus obtained was determined right after the composition was prepared, and after the composition was oxidized by being held at 150°C for 72 hours. The results are shown in Table 2.
: ~ o ~ .no o -r "
... et Q N ~
~
O O O
R
C.
X
O C O h ~D= N
W
U M o ~~ "~o M
O O O
00~ ~ ~
~ h ~ O~Ov ~ . O O O
.t p O O O
I~~ ~ O h ~ C1O~
~ ~ ~~ ~j~ ~O O O
O O O
~p~ ~ O O
~ ,nO O O
~ .* ~ N ...
O O O
O nO
.r M
O O O O
v c_.
~ ~' ' - '~0 0 0 T p M
O
W O O
N
o '~
o ' 'nc o 0 i ..r o e o c o d OO v_OvDvD ca Q
N ' O '~O C O 4% C p M O O O ~ .D a ' C
f0 e O
_ .r v0v1v7 V y R
~ t 'D
' h '~~ OvOv O
0 0 0 ~o a x ''' ~
' o c o ~ o =
a o - :, ~ ~
o ,~, '~o a c M '~O O O :p 'C ~
~
c c c z z v zz o , G o U v eV
. ~ =
Y V
Tf A a : co~ 'b ,.
o T~ 'N
tC
\
N : iv .. ~ o _ r ~ ea ' ~ ~
UN U :a~ ~ _ ..
E" _ . ~
00 M p N ~ C
O c.0~
(p O oU V - o ' N ' ' ae u O 'D c ~ =
a ~ ' '~
~' '~ C
tn O O ..
V ..
2 2 '=t..~ 'w~a ~
U Uo L V U ai.~v 0 D ~ 4 ' ~ ~ N
5- te s . . a U a c'O ~'N
O O..-.~ U V
O r C
U
~c.~ ~" o c o ' ' 00 o ~ W ' ~ M
'r C U
0 a ~ ~o ~ U U U U
' C GC C C ~ E C V
~ 'd C
O OO O j O ' CO _ C O ' ~
' ' E : _~ ~ ~7U V
C' Cs cJ~ cO~C O. O
a a. a~ U ~ U a c a ~
~. ~ .~ z WO 96!37582 PCT/US95/06620 The lubricating oil compositions of Examples 10 to 18 according to the present invention, into which succinimide containing boron was incorporated, had a coeffident of fi-iction lower than that of any of the lubricat-ing oil compositions of Examples 1 to 9 which contain no succinimide contain-ing boron, and showed excellent friction-reducing properties. Moreover, almost no change was found in the coefficient of friction even after the compositions were heated at 150°C for 72 hours and oxidized. Therefore, it can be seen that the lubricating oil compositions of the present invention are excellent in heat resistance. In contrast, in the case of the lubricating oil composition of Comparative Example 3, which was prepared by using only zinc dialkyldithio-phosphate having a secondary alkyl group as the zinc dialkyldithiophosphate, the coefficient of friction determined right after the composition was prepared was already high, even though succinimide containing boron was incorporated into the composition. Moreover, the coefficient of fiiction became higher after the composition was heated at 150°C for 72 hours and oxidized. It can thus be seen that this comparative composition is poor in both friction-reducing properties and heat resistance. In the case of the lubricating oil composition of Compara-tive Example 4, which was prepared by using calcium sulfonate instead of alkylsalieylate, the coefficient of fi-iction became higher after the composition was heated at 150°C for 72 hours and oxidized, even though succinimide containing boron was incorporated into the composition. It can thus be known that this comparative composition is poor in heat resistance.
The lubricating oil compositions of the present invention prepared by blending sulfoxymolybdenum dithiocarbamate having a specific structure, zinc dialkyldithiophosphate, alkylsalicylate, and, if desired, succinimide contain-ing boron with a base oil, therefore, have excellent antiwear properties, can maintain fi-iction-reducing properties for a prolonged period of time, and are excellent in both fi-iction-reducing properties and heat resistance. The lubricat-ing oil compositions of the present invention are thus useful as lubricating oils for internal-combustion engines, automatic transmission gearboxes, dampers, power steering units and the like, particularly useful as lubricating oils for internal-combustion engines.
Claims (5)
1. A method for lubricating an engine so as to maintain the reduction of friction for a prolonged time under the conditions of use in the engine comprising lubricating said engine with a lubricating oil composition comprising a lubricating base oil and (a) sulfoxymolybdenum dithiocarbamate containing a hydrocarbon group having 8 to 18 carbon atoms, (b) a zinc dialkyldithiophosphate component selected from the group consisting of:
(i) zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms, (ii) a mixture of zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms and zinc dialkyldithiophosphate containing secondary alkyl groups having 3 to 18 carbon atoms, (iii) zinc dialkyldithiophosphate containing primary alkyl groups containing 1 to 18 carbon atoms, and one secondary alkyl group containing 3 to 18 carbons, (iv) mixtures thereof, (c) an alkylsalicylate component comprising a mixture of magnesium alkylsalicylate and calcium alkylsalicylate, wherein the magnesium alkylsalicylate does not exceed 50% by weight of said alkylsalicylate component, wherein the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorous derived from the zinc dialkyldithiophosphate component is from 0.04 to 0.15% by weight of the total weight of the composition, and the total amount of the alkylsalicylate component is from 0.5 to 10% by weight of the total weight of the composition.
(i) zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms, (ii) a mixture of zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms and zinc dialkyldithiophosphate containing secondary alkyl groups having 3 to 18 carbon atoms, (iii) zinc dialkyldithiophosphate containing primary alkyl groups containing 1 to 18 carbon atoms, and one secondary alkyl group containing 3 to 18 carbons, (iv) mixtures thereof, (c) an alkylsalicylate component comprising a mixture of magnesium alkylsalicylate and calcium alkylsalicylate, wherein the magnesium alkylsalicylate does not exceed 50% by weight of said alkylsalicylate component, wherein the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorous derived from the zinc dialkyldithiophosphate component is from 0.04 to 0.15% by weight of the total weight of the composition, and the total amount of the alkylsalicylate component is from 0.5 to 10% by weight of the total weight of the composition.
2. A method for lubricating an engine so as to maintain the reduction of friction for a prolonged time under conditions of use in the engine comprising lubricating said engine with a lubricating oil composition comprising a lubricating base oil and:
(a) sulfoxymolybdenum dithiocarbamate containing a hydrocarbon group having 8 to 18 atoms, (b) a zinc dialkyldithiophosphate component selected from the group consisting of:
(i) zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms, (ii) a mixture of zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms and zinc dialkyldithiophosphate containing secondary alkyl groups having 3 to 18 carbon atoms, (iii) zinc dialkyldithiophosphate containing primary alkyl groups containing 1 to 18 carbon atoms, and one secondary alkyl group containing 3 to 18 carbons, (iv) mixtures thereof, (c) an alkylsalicylate component comprising a mixture of magnesium alkylsalicylate and calcium alkylsalicylate, wherein the magnesium alkylsalicylate does not exceed 50% by weight of said alkylsalicylate component, (d) succinimide containing boron, wherein the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorous derived from the zinc dialkyldithiophosphate component is from 0.04 to 0.15% by weight of the total weight of the composition, and the total amount of the alkylsalicylate component is from 0.5 to 10% by weight of the total weight of the composition, the amount of boron derived from the succinimide containing boron is from 0.005 to 0.06% by weight of the total weight of the composition, and the boron/nitrogen ratio regarding the number of atoms contained in the succinimide contained boron is from 0.05 to 1.5.
(a) sulfoxymolybdenum dithiocarbamate containing a hydrocarbon group having 8 to 18 atoms, (b) a zinc dialkyldithiophosphate component selected from the group consisting of:
(i) zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms, (ii) a mixture of zinc dialkyldithiophosphate containing primary alkyl groups having 1 to 18 carbon atoms and zinc dialkyldithiophosphate containing secondary alkyl groups having 3 to 18 carbon atoms, (iii) zinc dialkyldithiophosphate containing primary alkyl groups containing 1 to 18 carbon atoms, and one secondary alkyl group containing 3 to 18 carbons, (iv) mixtures thereof, (c) an alkylsalicylate component comprising a mixture of magnesium alkylsalicylate and calcium alkylsalicylate, wherein the magnesium alkylsalicylate does not exceed 50% by weight of said alkylsalicylate component, (d) succinimide containing boron, wherein the amount of molybdenum derived from the sulfoxymolybdenum dithiocarbamate is from 200 to 1000 ppm (weight basis) of the total weight of the composition, the amount of phosphorous derived from the zinc dialkyldithiophosphate component is from 0.04 to 0.15% by weight of the total weight of the composition, and the total amount of the alkylsalicylate component is from 0.5 to 10% by weight of the total weight of the composition, the amount of boron derived from the succinimide containing boron is from 0.005 to 0.06% by weight of the total weight of the composition, and the boron/nitrogen ratio regarding the number of atoms contained in the succinimide contained boron is from 0.05 to 1.5.
3. The method of claim 1 or 2 wherein the lubricating base oil is a hydrocracked oil and/or a wax isomerized oil containing 3% by weight or less aromatics, a sulfur content of 50 ppm or less and a nitrogen content of 50 ppm or less.
4. The method of claim 1 or 2 wherein the primary or secondary alkyl group of the zinc dialkyldithiophosphate contains 3 to 12 carbon atoms.
5. The method of claim 1 or 2 wherein the lubricating oil composition has a total base number of 3 to 10.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6131165A JPH07316577A (en) | 1994-05-20 | 1994-05-20 | Lubricant oil composition |
| CA002218811A CA2218811C (en) | 1994-05-20 | 1995-05-24 | Lubricating oil composition |
| EP95920657A EP0847435A4 (en) | 1995-05-24 | 1995-05-24 | Lubricating oil composition |
| PCT/US1995/006620 WO1996037582A1 (en) | 1994-05-20 | 1995-05-24 | Lubricating oil composition |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6131165A JPH07316577A (en) | 1994-05-20 | 1994-05-20 | Lubricant oil composition |
| CA002218811A CA2218811C (en) | 1994-05-20 | 1995-05-24 | Lubricating oil composition |
| PCT/US1995/006620 WO1996037582A1 (en) | 1994-05-20 | 1995-05-24 | Lubricating oil composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2218811A1 CA2218811A1 (en) | 1996-11-28 |
| CA2218811C true CA2218811C (en) | 2006-02-07 |
Family
ID=27170497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002218811A Expired - Fee Related CA2218811C (en) | 1994-05-20 | 1995-05-24 | Lubricating oil composition |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07316577A (en) |
| CA (1) | CA2218811C (en) |
| WO (1) | WO1996037582A1 (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2330325C (en) * | 1998-04-27 | 2003-11-25 | Infineum Holdings B.V. | Lubricating oil compositions |
| JP2011063818A (en) * | 1998-04-27 | 2011-03-31 | Infineum Holdings Bv | Lubricating oil composition |
| JP5057603B2 (en) * | 1998-05-01 | 2012-10-24 | 昭和シェル石油株式会社 | Lubricating oil composition for internal combustion engines |
| JP2000186293A (en) * | 1998-12-21 | 2000-07-04 | Tonen Corp | Diesel engine lubricating oil composition |
| KR100697579B1 (en) * | 1999-04-14 | 2007-03-22 | 쉘 인터내셔날 리서치 마챠피즈 비.브이. | Hydraulic fluid |
| US6140282A (en) * | 1999-12-15 | 2000-10-31 | Exxonmobil Research And Engineering Company | Long life lubricating oil composition using particular detergent mixture |
| US6191081B1 (en) | 1999-12-15 | 2001-02-20 | Exxonmobil Research And Engineering Company | Long life medium and high ash oils with enhanced nitration resistance |
| GB0011115D0 (en) * | 2000-05-09 | 2000-06-28 | Infineum Int Ltd | Lubricating oil compositions |
| US6569818B2 (en) * | 2000-06-02 | 2003-05-27 | Chevron Oronite Company, Llc | Lubricating oil composition |
| EP1256619A1 (en) * | 2001-05-11 | 2002-11-13 | Infineum International Limited | Lubricating oil composition |
| US6784143B2 (en) | 2001-05-11 | 2004-08-31 | Infineum International Ltd. | Lubricating oil composition |
| EP1518920A1 (en) * | 2001-05-11 | 2005-03-30 | Infineum International Limited | Lubricating oil composition |
| US7026273B2 (en) | 2001-11-09 | 2006-04-11 | Infineum International Limited | Lubricating oil compositions |
| EP1329496A1 (en) * | 2002-01-14 | 2003-07-23 | Infineum International Limited | Lubricating oil compositions with low sulfur and phosphorous content |
| EP1310549B1 (en) * | 2001-11-09 | 2006-05-31 | Infineum International Limited | Boron containing lubricating oil compositions with low sulfur and phosphorus content |
| US6500786B1 (en) | 2001-11-26 | 2002-12-31 | Infineum International Ltd. | Lubricating oil composition |
| JP4373650B2 (en) * | 2002-08-05 | 2009-11-25 | 新日本石油株式会社 | Lubricating oil composition |
| WO2004013263A1 (en) | 2002-08-05 | 2004-02-12 | Nippon Oil Corporation | Lubricating oil composition |
| US7563752B2 (en) | 2002-08-05 | 2009-07-21 | Nippon Oil Corporation | Lubricating oil compositions |
| JP4578115B2 (en) | 2004-02-04 | 2010-11-10 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition |
| EP1724329B1 (en) | 2005-05-20 | 2012-10-10 | Infineum International Limited | Metal detergent combination in lubricating oil compositions |
| US8361940B2 (en) | 2006-09-26 | 2013-01-29 | Chevron Japan Ltd. | Low sulfated ash, low sulfur, low phosphorus, low zinc lubricating oil composition |
| JP5214173B2 (en) * | 2007-06-05 | 2013-06-19 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition for internal combustion engines |
| JP6325894B2 (en) * | 2014-05-21 | 2018-05-16 | シェルルブリカンツジャパン株式会社 | Lubricating oil composition for internal combustion engines |
| JP6325893B2 (en) * | 2014-05-21 | 2018-05-16 | シェルルブリカンツジャパン株式会社 | Lubricating oil composition for internal combustion engines |
| US10793803B2 (en) | 2015-03-31 | 2020-10-06 | Idemitsu Kosan Co., Ltd. | Gasoline engine lubricant oil composition and manufacturing method therefor |
| JP6653162B2 (en) * | 2015-11-11 | 2020-02-26 | 株式会社Adeka | Organic molybdenum compound, lubricating oil composition and grease composition |
| CN108473905B (en) | 2015-12-07 | 2021-03-09 | Jxtg能源株式会社 | Lubricating oil composition for internal combustion engine |
| EP3263676B1 (en) | 2016-06-30 | 2023-07-19 | Infineum International Limited | Lubricating oil compositions |
| JP6741550B2 (en) | 2016-10-18 | 2020-08-19 | Ｅｎｅｏｓ株式会社 | Lubrication method for internal combustion engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3087936A (en) * | 1961-08-18 | 1963-04-30 | Lubrizol Corp | Reaction product of an aliphatic olefinpolymer-succinic acid producing compound with an amine and reacting the resulting product with a boron compound |
| US3509051A (en) * | 1964-08-07 | 1970-04-28 | T R Vanderbilt Co Inc | Lubricating compositions containing sulfurized oxymolybdenum dithiocarbamates |
| US4178258A (en) * | 1978-05-18 | 1979-12-11 | Edwin Cooper, Inc. | Lubricating oil composition |
| US4360438A (en) * | 1980-06-06 | 1982-11-23 | R. T. Vanderbilt Company, Inc. | Organomolybdenum based additives and lubricating compositions containing same |
| US4692256A (en) * | 1985-06-12 | 1987-09-08 | Asahi Denka Kogyo K.K. | Molybdenum-containing lubricant composition |
| US4846983A (en) * | 1986-02-21 | 1989-07-11 | The Lubrizol Corp. | Novel carbamate additives for functional fluids |
| US5281347A (en) * | 1989-09-20 | 1994-01-25 | Nippon Oil Co., Ltd. | Lubricating composition for internal combustion engine |
-
1994
- 1994-05-20 JP JP6131165A patent/JPH07316577A/en active Pending
-
1995
- 1995-05-24 WO PCT/US1995/006620 patent/WO1996037582A1/en active Application Filing
- 1995-05-24 CA CA002218811A patent/CA2218811C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07316577A (en) | 1995-12-05 |
| CA2218811A1 (en) | 1996-11-28 |
| WO1996037582A1 (en) | 1996-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2218811C (en) | Lubricating oil composition | |
| EP0700425B1 (en) | Lubricating oil composition | |
| US5672572A (en) | Lubricating oil composition | |
| EP1013750B1 (en) | Use of a lubricant oil composition in diesel engines | |
| JP3556355B2 (en) | Lubricating oil composition | |
| US6855675B1 (en) | Lubricating oil composition | |
| JPH08209178A (en) | Lubricant composition | |
| EP0707623B1 (en) | Lubricating oil composition | |
| EP0855437A1 (en) | Lubricating oil composition | |
| CA2210974C (en) | Lubricating oil composition | |
| US5665684A (en) | Lubricating oil composition | |
| JP3609526B2 (en) | Lubricating oil composition | |
| WO1996037581A1 (en) | Lubricating oil composition | |
| JPH07331269A (en) | Lubricating oil composition | |
| EP0847435A1 (en) | Lubricating oil composition | |
| CA2218809C (en) | Lubricating oil composition | |
| WO1996037584A1 (en) | Lubricating oil composition | |
| JPH06207191A (en) | Lubricating oil composition | |
| JPH08209173A (en) | Lubricant composition | |
| JPH1143684A (en) | Lubricating oil composition | |
| JPH07150172A (en) | Lubricating oil composition | |
| EP0830444A1 (en) | Lubricating oil composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |