US4085167A
Expired / Lapsed
US
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Carboxylic polymeric thickeners
Assignee: Rohm and Haas Co
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Filing: 1972-12-06
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Granted: 1978-04-18
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Expires: 1992-12-06
Abstract
Abstract Polymers of a polymerizable mixture comprising an ethylenically unsaturated acid and an oligomer of an allyl-containing ester of acrylic acid or methacrylic acid are useful as thickening and bodying agents when partially or completely neutralized.
Inventors
- 👤 Sheldon N. Lewis
- 👤 John J. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:18
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A61Q; A61Q11/00; A61Q5/00; A61Q5/02; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/40; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C09; C09D; C09D7/00; C09D7/40; C09D7/43; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/035; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C09K8/24; Y; Y10; Y10S; Y10S526/00; Y10S526/932
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A solid polymer of a polymerizable mixture consisting essentially of: A. at least about 30% by weight, of the polymer, of a monoethylenically α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, citraconic acid, mesaconic acid and mixtures of same, and B. an oligomer having a number average molecular weight of from about 400 to about 10,000 wherein the oligomer is an unhydrolyzed or partially-hydrolyzed oligomer of allyl methacrylate or a (C 3 -C 7 )allyloxyalkyl methacrylate; wherein the average chain length of the oligomer is about 6 to about 50 mers, and wherein at least about 85% of the molecules of the oligomer have chain lengths of about √2n to about 2n mers, wherein n represents the average chain length of the oligomer; and wherein the oligomer comprises about 0.1% to about 10% by weight of the mixture.
Claim 2
Dependent Claim
151 words
A solid polymer of a polymerizable mixture consisting essentially of: A. at least about 30% by weight, of the polymer, of a monoethylenically α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, citraconic acid, mesaconic acid and mixtures of same, and B. an oligomer having a number average molecular weight of from about 400 to about 10,000 wherein the oligomer is an unhydrolyzed or partially-hydrolyzed oligomer of allyl methacrylate or a (C 3 -C 7 )allyloxyalkyl methacrylate; wherein the average chain length of the oligomer is about 6 to about 50 mers, and wherein at least about 85% of the molecules of the oligomer have chain lengths of about √2n to about 2n mers, wherein n represents the average chain length of the oligomer; and wherein the oligomer comprises about 0.1% to about 10% by weight of the mixture.
Claim 3
Dependent Claim
18 words
A polymer according to claim 1 wherein the cligomer is an unhydrolyzed or partially-hydrolyzed oligomer of allyl methacrylate.
Claim 4
Dependent Claim
19 words
A polymer according to claim 2 which has been neutralized to a pH of about 4 to about 10.
Claim 5
Dependent Claim
21 words
A polymer according to claim 1 wherein the oligomer has a number average molecular weight of about 700 to about 3,000.
Claim 6
Dependent Claim
12 words
A polymer according to claim 1 wherein the acid is acrylic acid.
Claim 7
Dependent Claim
155 words
A solid polymer of a polymerizable mixture consisting essentially of: A. at least about 30% by weight, of the polymer, of a monoethylenically α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, citraconic acid, mesaconic acid and mixtures of same, and B. an oligomer having a number average molecular weight of from about 400 to about 10,000 wherein the oligomer is an unhydrolyzed or partially-hydrolyzed oligomer of allyl acrylate or a (C 3 -C 7 ) allyloxyalkyl acrylate; wherein the average chain length of the oligomer is about 6 to about 30 mers, and wherein at least about 80% by weight of the oligomer consists of molecules having chain lengths of about n/3 to about 3.3 n mers, wherein n represents the average chain length of the oligomer; and wherein the oligomer comprises about 0.1% to about 10% by weight of the mixture.
Claim 8
Dependent Claim
155 words
A solid polymer of a polymerizable mixture consisting essentially of: A. at least about 30% by weight, of the polymer, of a monoethylenically α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, citraconic acid, mesaconic acid and mixtures of same, and B. an oligomer having a number average molecular weight of from about 400 to about 10,000 wherein the oligomer is an unhydrolyzed or partially-hydrolyzed oligomer of allyl acrylate or a (C 3 -C 7 ) allyloxyalkyl acrylate; wherein the average chain length of the oligomer is about 6 to about 30 mers, and wherein at least about 80% by weight of the oligomer consists of molecules having chain lengths of about n/3 to about 3.3 n mers, wherein n represents the average chain length of the oligomer; and wherein the oligomer comprises about 0.1% to about 10% by weight of the mixture.
Claim 9
Dependent Claim
18 words
A polymer according to claim 6 wherein the oligomer is an unhydrolyzed or partially-hydrolyzed oligomer of allyl acrylate.
Claim 10
Dependent Claim
18 words
A polymer according to claim 7 which has been neutralized to pH of about 4 to about 10.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |