FR2248863A1 - Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oil - Google Patents
Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oilInfo
- Publication number
- FR2248863A1 FR2248863A1 FR7434609A FR7434609A FR2248863A1 FR 2248863 A1 FR2248863 A1 FR 2248863A1 FR 7434609 A FR7434609 A FR 7434609A FR 7434609 A FR7434609 A FR 7434609A FR 2248863 A1 FR2248863 A1 FR 2248863A1
- Authority
- FR
- France
- Prior art keywords
- oil
- addn
- diamide
- contg
- units
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/28—Prevention of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lubricants (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paper (AREA)
Abstract
The anti-foaming agents comprise (A) 2-20% wt. of a diamide R-NH-CO-R'-CO-NH-R, in which R = 8-22 C alkyl gp. and R1 = 1-8 C (un)satd. alkylene gp., (B) 0.5-5 wt. % silicone oil and 75-97.5 wt. % of a mineral oil. The anti-foams are esp. useful for addn. to paper pulp during milling. Suitable diamides (A) are N,N'-dioctadecyl adipamide, N,N'-dioctadecyl azelamide, and N,N'-dioctadecyl maleamide. Silicone oil (B) is pref. chosen from OH-terminated dimethylpolysiloxanes with a viscosity of is less than or =35 centistokes at 25 degrees C and organopolysiloxanes soluble in benzene, contg. (i) SiO2 units and (ii) units R3SIO1/2 where R = monovalent hydrocarbon radical with 1-6 C, with a ratio units (i): units (ii) = 1.id1 to 0.6:1. Mineral oil (C) is pref. a largely paraffinic oil with a viscosity of 100-110 S.S.U. at 37.8 degrees C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41074273A | 1973-10-29 | 1973-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2248863A1 true FR2248863A1 (en) | 1975-05-23 |
Family
ID=23626030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7434609A Withdrawn FR2248863A1 (en) | 1973-10-29 | 1974-10-15 | Antifoaming agents esp. for addn. to paper pulp - contg. org. diamide, silicone oil and mineral oil |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5074583A (en) |
| AR (1) | AR201863A1 (en) |
| AU (1) | AU6940074A (en) |
| BE (1) | BE821554A (en) |
| BR (1) | BR7409059A (en) |
| DE (1) | DE2420955A1 (en) |
| ES (1) | ES429965A1 (en) |
| FI (1) | FI137174A (en) |
| FR (1) | FR2248863A1 (en) |
| IT (1) | IT1018722B (en) |
| NL (1) | NL7407636A (en) |
| NO (1) | NO741884L (en) |
| SE (1) | SE7407620L (en) |
| ZA (1) | ZA742936B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3008952A1 (en) * | 1980-03-08 | 1981-09-24 | Bayer Ag, 5090 Leverkusen | FOAM ABSORBERS, THEIR PRODUCTION AND USE IN AQUEOUS SYSTEMS |
| DE3146168C2 (en) * | 1981-11-21 | 1986-07-24 | Neosid Pemetzrieder Gmbh & Co Kg, 5884 Halver | Inductive component, in particular a coil for high and very high frequencies and a method for producing such a component |
| US5180802A (en) * | 1990-07-18 | 1993-01-19 | Rheox, Inc. | Monoamine capped non-reactive polyamide composition |
| JP2002143606A (en) * | 2000-11-07 | 2002-05-21 | Nikko Kagaku Kenkyusho:Kk | Defoaming agent composition and method for producing the same |
-
1974
- 1974-04-30 DE DE2420955A patent/DE2420955A1/en active Pending
- 1974-05-02 AR AR253563A patent/AR201863A1/en active
- 1974-05-06 FI FI1371/74A patent/FI137174A/fi unknown
- 1974-05-08 ZA ZA00742936A patent/ZA742936B/en unknown
- 1974-05-22 NO NO741884A patent/NO741884L/no unknown
- 1974-05-27 AU AU69400/74A patent/AU6940074A/en not_active Expired
- 1974-06-07 NL NL7407636A patent/NL7407636A/en unknown
- 1974-06-10 SE SE7407620A patent/SE7407620L/xx not_active Application Discontinuation
- 1974-06-25 JP JP49072740A patent/JPS5074583A/ja active Pending
- 1974-07-22 IT IT52206/74A patent/IT1018722B/en active
- 1974-09-11 ES ES429965A patent/ES429965A1/en not_active Expired
- 1974-10-15 FR FR7434609A patent/FR2248863A1/en not_active Withdrawn
- 1974-10-28 BE BE149943A patent/BE821554A/en unknown
- 1974-10-29 BR BR9059/74A patent/BR7409059A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE821554A (en) | 1975-02-17 |
| IT1018722B (en) | 1977-10-20 |
| SE7407620L (en) | 1975-04-30 |
| DE2420955A1 (en) | 1975-05-07 |
| JPS5074583A (en) | 1975-06-19 |
| NO741884L (en) | 1975-05-26 |
| ES429965A1 (en) | 1976-09-16 |
| AR201863A1 (en) | 1975-04-24 |
| BR7409059A (en) | 1976-05-11 |
| AU6940074A (en) | 1975-11-27 |
| NL7407636A (en) | 1975-05-02 |
| ZA742936B (en) | 1975-05-28 |
| FI137174A (en) | 1975-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |