US5011978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers as thickeners and modifiers for latex systems
Assignee: Akzo Nobel NV
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Filing: 1989-12-29
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Granted: 1991-04-30
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Expires: 2009-12-29
Abstract
Abstract A thickened aqueous copolymer solution useful for thickening and improving the properties of latex systems comprising a copolymer having as monomeric units: about 79-99 percent of a (meth)acrylic acid salt of sodium, potassium, or ammonium; about 0-20 percent of (meth)acrylic acid; about 0-20 percent of a lower alkyl ester of (meth)acrylic acid; about 1-21 percent of surfactant units selected from the urea reaction product of a monoethylenically unsaturated monoisocyanate with a nonionic surfactant having amine functionality; and about 0-1 percent of a copolymerizable polyethylenically unsatured monomer, said percentages being by weight based on the total weight of monomeric units in said copolymer.
Inventors
- 👤 Milagros C. Barron
- 👤 Ronald L. Swope
- 👤 John M. Wilkerson, III
- 👤 Charles G. Ruffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:24
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C09; C09D; C09D7/00; C09D7/40; C09D7/43; C09K; C09K23/00; C09K23/16; C08L; C08L33/00; C08L33/02; C08L33/04; C08L33/06; C08L33/08; C08L33/10; C08L75/00; C08L75/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A co-polymerizable monomer comprising the reaction product of a nonionic surfactant of the formula ##STR4## where R 1 is C 8 to C 20 alkyl, a C 8 to C 20 alkylphenyl or a di(C 8 to C 20 alkyl)phenyl, n and m are independently selected from 2 to 4, a and c are independently selected from the range of 0 to 100, provided that a+c is within the range of 2 to 100; R 2 and R 3 are independently selected from CH 3 or CH 2 CH 3 , b and d are independently selected from the range of 0 to 50, provided that b+d is within the range of 0 to 50; and e is from 1 to 50; wherein the sum of a+c is always greater than the sum of b+d; with isocyanatoethylmethacrylate or alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate.
Claim 2
Dependent Claim
143 words
A co-polymerizable monomer comprising the reaction product of a nonionic surfactant of the formula ##STR4## where R 1 is C 8 to C 20 alkyl, a C 8 to C 20 alkylphenyl or a di(C 8 to C 20 alkyl)phenyl, n and m are independently selected from 2 to 4, a and c are independently selected from the range of 0 to 100, provided that a+c is within the range of 2 to 100; R 2 and R 3 are independently selected from CH 3 or CH 2 CH 3 , b and d are independently selected from the range of 0 to 50, provided that b+d is within the range of 0 to 50; and e is from 1 to 50; wherein the sum of a+c is always greater than the sum of b+d; with isocyanatoethylmethacrylate or alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate.
Claim 3
Dependent Claim
57 words
A co-polymerizable monomer comprising the reaction product of a nonionic surfactant of the formula ##STR5## dioctylphenyl, nonylphenyl or dinonylphenyl, n is an integer from 2 to 4, a is from 3 to 20, R 2 is --CH 3 or CH 2 CH 3 , and b is from 0-10 with isocyanatoethylmethacrylate or alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate.
Claim 4
Dependent Claim
57 words
A co-polymerizable monomer comprising the reaction product of a nonionic surfactant of the formula ##STR5## dioctylphenyl, nonylphenyl or dinonylphenyl, n is an integer from 2 to 4, a is from 3 to 20, R 2 is --CH 3 or CH 2 CH 3 , and b is from 0-10 with isocyanatoethylmethacrylate or alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate.
Claim 5
Dependent Claim
19 words
A copolymerizable surfactant comprising a urea reaction product of isocyanatoethylmethacrylate and nonylphenoxy poly[(oxyethylene) 9 .5 (oxypropylene) 2 ] amine.
Claim 6
Dependent Claim
19 words
A copolymerizable surfactant comprising a urea reaction product of isocyanatoethylmethacrylate and nonylphenoxy poly[(oxyethylene) 9 .5 (oxypropylene) 2 ] amine.
Claim 7
Dependent Claim
23 words
A copolymerizable surfactant comprising a urea reaction product of alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate and nonylphenoxy poly[(oxyethylene) 9 .5 (oxypropylene) 2 ] amine.
Claim 8
Dependent Claim
23 words
A copolymerizable surfactant comprising a urea reaction product of alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate and nonylphenoxy poly[(oxyethylene) 9 .5 (oxypropylene) 2 ] amine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |