CN102633925B - 低残单低分子量均聚n-乙烯基丁内酰胺的合成方法 - Google Patents
低残单低分子量均聚n-乙烯基丁内酰胺的合成方法 Download PDFInfo
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- CN102633925B CN102633925B CN2012101549106A CN201210154910A CN102633925B CN 102633925 B CN102633925 B CN 102633925B CN 2012101549106 A CN2012101549106 A CN 2012101549106A CN 201210154910 A CN201210154910 A CN 201210154910A CN 102633925 B CN102633925 B CN 102633925B
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- Prior art keywords
- vinyl butyrate
- molecular weight
- butyrate lactam
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- low
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- 239000000178 monomer Substances 0.000 title claims abstract description 30
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 title abstract description 15
- 238000001308 synthesis method Methods 0.000 title abstract 2
- 239000003999 initiator Substances 0.000 claims abstract description 77
- 239000002131 composite material Substances 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 29
- 239000002253 acid Substances 0.000 claims abstract description 24
- 239000012986 chain transfer agent Substances 0.000 claims abstract description 19
- 239000007864 aqueous solution Substances 0.000 claims abstract description 16
- 239000012190 activator Substances 0.000 claims abstract description 15
- 150000002978 peroxides Chemical class 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 63
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 35
- 239000000243 solution Substances 0.000 claims description 23
- 239000011259 mixed solution Substances 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 15
- 238000010189 synthetic method Methods 0.000 claims description 15
- WYGWHHGCAGTUCH-UHFFFAOYSA-N 2-[(2-cyano-4-methylpentan-2-yl)diazenyl]-2,4-dimethylpentanenitrile Chemical compound CC(C)CC(C)(C#N)N=NC(C)(C#N)CC(C)C WYGWHHGCAGTUCH-UHFFFAOYSA-N 0.000 claims description 13
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 230000001143 conditioned effect Effects 0.000 claims description 9
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 5
- -1 t-amyl peroxy hydrogen Chemical class 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 claims description 4
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical class ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 239000011790 ferrous sulphate Substances 0.000 claims description 3
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-N peroxydisulfuric acid Chemical compound OS(=O)(=O)OOS(O)(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-N 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 3
- 229960004418 trolamine Drugs 0.000 claims description 3
- 229960002089 ferrous chloride Drugs 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 29
- 239000000463 material Substances 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000011261 inert gas Substances 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 239000011630 iodine Substances 0.000 description 6
- 229910052740 iodine Inorganic materials 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical group O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- 244000248349 Citrus limon Species 0.000 description 2
- 235000005979 Citrus limon Nutrition 0.000 description 2
- 239000004159 Potassium persulphate Substances 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 150000003951 lactams Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 101000748141 Homo sapiens Ubiquitin carboxyl-terminal hydrolase 32 Proteins 0.000 description 1
- 206010023126 Jaundice Diseases 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 102100040050 Ubiquitin carboxyl-terminal hydrolase 32 Human genes 0.000 description 1
- 206010049040 Weight fluctuation Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003822 preparative gas chromatography Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 229960004249 sodium acetate Drugs 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/28—Oxygen or compounds releasing free oxygen
- C08F4/30—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F126/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F126/06—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
- C08F126/10—N-Vinyl-pyrrolidone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/28—Oxygen or compounds releasing free oxygen
- C08F4/32—Organic compounds
- C08F4/34—Per-compounds with one peroxy-radical
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
- C08F2/10—Aqueous solvent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Polymerization Catalysts (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101549106A CN102633925B (zh) | 2012-05-16 | 2012-05-16 | 低残单低分子量均聚n-乙烯基丁内酰胺的合成方法 |
PCT/CN2012/079062 WO2013170535A1 (zh) | 2012-05-16 | 2012-07-23 | 低残单低分子量均聚n—乙烯基丁内酰胺的合成方法 |
Applications Claiming Priority (1)
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CN2012101549106A CN102633925B (zh) | 2012-05-16 | 2012-05-16 | 低残单低分子量均聚n-乙烯基丁内酰胺的合成方法 |
Publications (2)
Publication Number | Publication Date |
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CN102633925A CN102633925A (zh) | 2012-08-15 |
CN102633925B true CN102633925B (zh) | 2013-11-27 |
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CN2012101549106A Active CN102633925B (zh) | 2012-05-16 | 2012-05-16 | 低残单低分子量均聚n-乙烯基丁内酰胺的合成方法 |
Country Status (2)
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CN (1) | CN102633925B (zh) |
WO (1) | WO2013170535A1 (zh) |
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CN103739759A (zh) * | 2013-12-31 | 2014-04-23 | 山东九恒集团有限公司 | 一种聚乙烯基吡咯烷酮k15的聚合方法 |
CN112661890B (zh) * | 2020-12-23 | 2023-05-05 | 安徽山河药用辅料股份有限公司 | 一种医药用低杂质聚维酮k30的制备方法 |
CN115651108B (zh) * | 2022-11-03 | 2024-02-23 | 宇昂科技有限公司 | 一种超低分子量的聚乙烯吡咯烷酮的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1073949A (zh) * | 1991-12-05 | 1993-07-07 | Basf公司 | 超高纯n-乙烯基吡咯烷酮聚合物的制备 |
US6187884B1 (en) * | 1997-06-27 | 2001-02-13 | Basf Aktiengesellschaft | Preparation of low molecular mass homopolymers of N-vinylpyrrolidone |
CN101585893A (zh) * | 2009-06-26 | 2009-11-25 | 博爱新开源制药股份有限公司 | 超低分子量聚乙烯基吡咯烷酮的制备方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3999022B2 (ja) * | 2002-04-04 | 2007-10-31 | 株式会社日本触媒 | ビニルピロリドン系重合体 |
DE102008043523A1 (de) * | 2007-11-16 | 2009-05-20 | Basf Se | Verfahren zur Herstellung von Polyvinylpyrrolidonen durch Sprühpolymerisation |
-
2012
- 2012-05-16 CN CN2012101549106A patent/CN102633925B/zh active Active
- 2012-07-23 WO PCT/CN2012/079062 patent/WO2013170535A1/zh active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1073949A (zh) * | 1991-12-05 | 1993-07-07 | Basf公司 | 超高纯n-乙烯基吡咯烷酮聚合物的制备 |
US6187884B1 (en) * | 1997-06-27 | 2001-02-13 | Basf Aktiengesellschaft | Preparation of low molecular mass homopolymers of N-vinylpyrrolidone |
CN101585893A (zh) * | 2009-06-26 | 2009-11-25 | 博爱新开源制药股份有限公司 | 超低分子量聚乙烯基吡咯烷酮的制备方法 |
Also Published As
Publication number | Publication date |
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WO2013170535A1 (zh) | 2013-11-21 |
CN102633925A (zh) | 2012-08-15 |
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