US4529762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed emulsifier for emulsion polymerization
Assignee: Henkel AG and Co KGaA
•
Filing: 1984-10-18
•
Granted: 1985-07-16
•
Expires: 2004-10-18
Abstract
Abstract Compositions and processes for the aqueous emulsion polymerization of ethylenically unsaturated monomers using mixed emulsifiers containing (a) about 99.5 to about 10 parts by weight of an α-sulfocarboxylic acid alkyl ester containing from 8 to 24 carbon atoms in the carboxylic acid portion and from 1 to 4 carbon atoms in the alcohol portion, and (b) from about 0.5 to about 90 parts by weight of an α-sulfocarboxylic acid containing from 8 to 24 carbon atoms, and if desired, other anionic and/or non-anionic emulsifiers and/or protective colloids; the mixed emulsifier optionally being completely or partly present in salt form.
Inventors
- 👤 Rainer Hoefer
- 👤 Karl Schmid
- 👤 Bernd Wegemund
- 👤 Bernhard Bartnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:16
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
An aqueous polymer dispersion comprising I. a polymer of at least one ethylenically unsaturated monomer, and II. an emulsifier mixture containing A. from about 99.5 to about 10 parts by weight of at least one α-sulfocarboxylic acid alkyl ester containing from 8 to 24 carbon atoms in the carboxylic acid portion and from 1 to 4 carbon atoms in the alcohol portion, and B. from about 0.5 to about 90 parts by weight of at least one α-sulfocarboxylic acid containing from 8 to 24 carbon atoms.
Claim 2
Dependent Claim
86 words
An aqueous polymer dispersion comprising I. a polymer of at least one ethylenically unsaturated monomer, and II. an emulsifier mixture containing A. from about 99.5 to about 10 parts by weight of at least one α-sulfocarboxylic acid alkyl ester containing from 8 to 24 carbon atoms in the carboxylic acid portion and from 1 to 4 carbon atoms in the alcohol portion, and B. from about 0.5 to about 90 parts by weight of at least one α-sulfocarboxylic acid containing from 8 to 24 carbon atoms.
Claim 3
Dependent Claim
32 words
An aqueous polymer dispersion in accordance with claim 1 wherein component II is present in from about 0.5 to about 10% by weight, based on the weight of the aqueous polymer dispersion.
Claim 4
Dependent Claim
32 words
An aqueous polymer dispersion in accordance with claim 1 wherein component II is present in from about 1 to about 5% by weight, based on the weight of the aqueous polymer dispersion.
Claim 5
Dependent Claim
32 words
An aqueous polymer dispersion in accordance with claim 1 wherein component II is present in from about 1.5 to about 3% by weight, based on the weight of the aqueous polymer dispersion.
Claim 6
Dependent Claim
41 words
An aqueous polymer dispersion in accordance with claim 1 wherein in component II from about 95 to about 50 parts by weight of ingredient A and from about 5 to about 50 parts by weight of ingredient B are present therein.
Claim 7
Dependent Claim
41 words
An aqueous polymer dispersion in accordance with claim 1 wherein in component II from about 90 to about 70 parts by weight of ingredient A and from about 10 to about 30 parts by weight of ingredient B are present therein.
Claim 8
Dependent Claim
38 words
An aqueous polymer dispersion in accordance with claim 1 wherein in component II said emulsifier mixture is at least partly in the form of an alkali metal salt, magnesium salt, calcium salt, or an amine or ammonium salt.
Claim 9
Dependent Claim
44 words
An aqueous polymer dispersion in accordance with claim 1 wherein component I is a polymer of at least one of an aromatic vinyl compound, a monoolefin, a diolefin, an acrylic or methacrylic acid derivative, a vinyl ester, a vinyl ether, or a vinyl halide.
Claim 10
Dependent Claim
26 words
An aqueous polymer dispersion in accordance with claim 1 which also contains at least one of: an anionic coemulsifier, a nonionic coemulsifier, or a protective colloid.
References Cited (Backward Citations)
US3732178A
Cited
US4143020A
Cited
US4021460A
Cited
US4286078A
Cited
DE3123681A1
Cited
GB2089793A
Cited
DE3047897A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |