US4029624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization of acrylate or other vinyl monomers using selected mixtures of soluble salts of certain sulfosuccinic acid half esters
Assignee: Wyeth Holdings LLC
•
Filing: 1975-12-08
•
Granted: 1977-06-14
•
Expires: 1995-12-08
Abstract
Abstract For use as an emusifier for emulsion polymerization of acrylate monomer mixtures, there is provided a novel mixture of soluble salts of sulfosuccinate half esters of two or three alcohols, each selected from a different class defined and each respective half ester being present in a defined range of proportions in the mixture. The defined emulsifiers, even when used at concentrations less than usual for emulsion polymerization, produce acrylate latex products having a favorable combination of several advantageous properties, particularly good mechanical stability and low viscosity, even when a cross-linking monomer is included in the monomer mixture to be polymerized.
Inventors
- 👤 Herbert Burkhard
- 👤 Nelson Nae-Ching Hsu
- 👤 Edward Joseph Fetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
136 words
A surfactant mixture of 100 parts by weight consisting of: from 57 to 87 parts by wt. of a soluble salt of the sulfosuccinate half ester of an alcohol selected from branched-chain alkanols having 8 to 12 carbon atoms, from 0 to 30 parts by wt. of a soluble salt of the sulfosuccinate half ester of an alkyl-polyoxyethylene alcohol having the formula, R(och 2 ch 2 ) n OH wherein R is alkyl having 6 to 20 carbon atoms and n is a value in the range from 2 to 50; and from 0 to 33 parts by weight of a soluble salt of the sulfosuccinate half ester of a polyethoxyalkylphenol having the formula, ##STR3## R is alkyl having 6 to 12 carbon atoms and n is a value in the range from 2 to 50.
Claim 2
Dependent Claim
136 words
A surfactant mixture of 100 parts by weight consisting of: from 57 to 87 parts by wt. of a soluble salt of the sulfosuccinate half ester of an alcohol selected from branched-chain alkanols having 8 to 12 carbon atoms, from 0 to 30 parts by wt. of a soluble salt of the sulfosuccinate half ester of an alkyl-polyoxyethylene alcohol having the formula, R(och 2 ch 2 ) n OH wherein R is alkyl having 6 to 20 carbon atoms and n is a value in the range from 2 to 50; and from 0 to 33 parts by weight of a soluble salt of the sulfosuccinate half ester of a polyethoxyalkylphenol having the formula, ##STR3## R is alkyl having 6 to 12 carbon atoms and n is a value in the range from 2 to 50.
Claim 3
Dependent Claim
56 words
A surfactant mixture defined by claim 1, of 100 parts by wt. consisting of: 57 to 87 parts by wt. of diammonium isodecyl sulfosuccinate, 0 to 30 parts by wt. of diammonium sulfosuccinate of C 10-12 H 21-25 (OCH 2 --CH 2 ) 5 OH 0 to 33 parts by wt. of diammonium sulfosuccinate of ##STR4##
Claim 4
Dependent Claim
51 words
A surfactant mixture defined by claim 1 of 100 parts by wt. consisting of: about 75 parts by wt. diammonium isodecyl sulfosuccinate; about 15 parts by wt. diammonium sulfosuccinate of C 10-12 H 21-25 (OCH 2 CH 2 ) 5 OH, and about 10 parts by wt. diammonium sulfosuccinate of ##STR5##
Claim 5
Dependent Claim
42 words
An aqueous latex of acrylate copolymer in which acrylate monomer units predominate, said latex containing about 1 to about 4 percent by wt. based on the polymer weight of a surfactant mixture defined by claim 1 as the emulsifier for said latex.
Claim 6
Dependent Claim
52 words
An aqueous latex of acrylate copolymer in which acrylate monomer units predominate and having a minor proportion in said polymer of cross-linking units, said latex containing about 1 to 4 percent by wt. based on the polymer weight of a surfactant mixture defined by claim 1 as the emulsifier for said latex.
Claim 7
Dependent Claim
60 words
An aqueous latex of acrylate copolymer in which acrylate monomer units selected from ethyl acrylate and methyl methacrylate predominate and having a minor proportion in said polymer of N-methylolacrylamide cross-linking units, said latex containing about 1 to 4 percent by wt. based on the polymer weight of a surfactant mixture defined by claim 1 as the emulsifier for said latex.
Claim 8
Dependent Claim
42 words
An aqueous latex of acrylate copolymer in which acrylate monomer units predominate, said latex containing about 1 to about 4 parts by wt. based on the polymer weight of a surfactant mixture defined by claim 2 as the emulsifier for said latex.
Claim 9
Dependent Claim
52 words
An aqueous latex of acrylate copolymer in which acrylate monomer units predominate and having a minor proportion in said polymer of cross-linking units, said latex containing about 1 to 4 parts by wt. based on the polymer weight of a surfactant mixture defined by claim 2 as the emulsifier for said latex.
Claim 10
Dependent Claim
60 words
An aqueous latex of acrylate copolymer in which acrylate monomer units selected from ethyl acrylate and methyl methacrylate predominate and having a minor proportion in said polymer of N-methylolacrylamide cross-linking units, said latex containing about 1 to 4 parts by wt. based on the polymer weight of a surfactant mixture defined by claim 2 as the emulsifier for said latex.
Claim 11
Dependent Claim
42 words
An aqueous latex of acrylate copolymer in which acrylate monomer units predominate, said latex containing about 1 to about 4 parts by wt. based on the polymer weight of a surfactant mixture defined by claim 3 as the emulsifier for said latex.
Claim 12
Dependent Claim
52 words
An aqueous latex of acrylate copolymer in which acrylate monomer units predominate and having a minor proportion in said polymer of cross-linking units, said latex containing about 1 to 4 parts by wt. based on the polymer weight of a surfactant mixture defined by claim 3 as the emulsifier for said latex.
Claim 13
Dependent Claim
60 words
An aqueous latex of acrylate copolymer in which acrylate monomer units selected from ethyl acrylate and methyl methacrylate predominate and having a minor proportion in said polymer of N-methylolarcylamide cross-linking units, said latex containing about 1 to 4 parts by wt. based on the polymer weight of a surfactant mixture defined by claim 3 as the emulsifier for said latex.
Claim 14
Dependent Claim
43 words
A process for polymerizing a mixture of vinyl monomers in which acrylate monomers predominate in aqueous emulsion containing 1 to 4 parts by wt. based on wt. of the monomer of an emulsifier consisting essentially of the surfactant composition defined by claim 1.
Claim 15
Dependent Claim
23 words
A process defined by claim 13 wherein the mixture of vinyl monomers comprises 1 to 10 parts by wt. of a cross-linking monomer.
Claim 16
Dependent Claim
23 words
A process defined by claim 14 wherein the mixture of vinyl monomers consists essentially of acrylate monomers and the cross-linking monomer is N-methylolacrylamide.
Claim 17
Dependent Claim
19 words
A process defined by claim 15 wherein the acrylate monomers are a mixture of ethyl acrylate and methyl methacrylate.
Claim 18
Dependent Claim
43 words
A process of polymerizing a mixture of vinyl monomers in which acrylate monomers predominate in aqueous emulsion containing 1 to 4 parts by wt. based on wt. of the monomers of an emulsifier consisting essentially of the surfactant composition defined by claim 2.
Claim 19
Dependent Claim
23 words
A process defined by claim 17 wherein the mixture of vinyl monomers comprises 1 to 10 parts by wt. of a cross-linking monomer.
Claim 20
Dependent Claim
23 words
A process defined by claim 18 wherein the mixture of vinyl monomers consists essentially of acrylate monomers and the cross-linking monomer is N-methylolacrylamide.
Claim 21
Dependent Claim
19 words
A process defined by claim 19 wherein the acrylate monomers are a mixture of ethyl acrylate and methyl methacrylate.
Claim 22
Dependent Claim
42 words
A process of polymerizing a mixture of vinyl monomers in which acrylate monomers predominate in aqueous emulsion containing 1 to 4 parts by wt. based on wt. of the monomers of an emulsifier consisting essentially of the surfactant composition of claim 3.
Claim 23
Dependent Claim
23 words
A process defined by claim 21 wherein the mixture of vinyl monomers comprises 1 to 10 parts by wt. of a cross-linking monomer.
Claim 24
Dependent Claim
23 words
A process defined by claim 22 wherein the mixture of vinyl monomers consists essentially of acrylate monomers and the cross-linking monomer is N-methylolacrylamide.
Claim 25
Dependent Claim
19 words
A process defined by claim 23 wherein the acrylate monomers are a mixture of ethyl acrylate and methyl methacrylate.
References Cited (Backward Citations)
US3242121A
Cited
US3329640A
Cited
US3423351A
Cited
US3642676A
Cited
US3836497A
Cited
US3714096A
Cited
US3736282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |