US4916183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers as thickeners and modifiers for latex systems
Assignee: ACC DEVELOPMENT Corp A CORP OF
•
Filing: 1989-03-02
•
Granted: 1990-04-10
•
Expires: 2009-03-02
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
2026-11-01 20:29
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; Y; Y10; Y10S; Y10S526/00; Y10S526/932
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
232 words
An aqueous copolymer solution useful for thickening and improving the rheology and dry tensile strength of latex systems comprising a copolymer having as monomeric units: (A) about 79-99 percent of a (meth)acrylic acid salt of sodium, potassium or ammonium; (B) about 0-20 percent of (meth)acrylic acid; (C) about 0-20 percent of a lower alkyl ester of (meth)acrylic acid; (D) about 1-21 percent of surfactant monomer which is the urea reaction product of a monoethylenically unsaturated monoisocyanate with a nonionic surfactant having the formula ##STR4## where R 1 is a C 8 to C 20 alkyl or 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; (E) about 0-1 percent of a copolymerizable polyethylenically unsaturated monomer, said percentages being by weight based on the total weight of monomeric units in said copolymer.
Claim 2
Dependent Claim
232 words
An aqueous copolymer solution useful for thickening and improving the rheology and dry tensile strength of latex systems comprising a copolymer having as monomeric units: (A) about 79-99 percent of a (meth)acrylic acid salt of sodium, potassium or ammonium; (B) about 0-20 percent of (meth)acrylic acid; (C) about 0-20 percent of a lower alkyl ester of (meth)acrylic acid; (D) about 1-21 percent of surfactant monomer which is the urea reaction product of a monoethylenically unsaturated monoisocyanate with a nonionic surfactant having the formula ##STR4## where R 1 is a C 8 to C 20 alkyl or 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; (E) about 0-1 percent of a copolymerizable polyethylenically unsaturated monomer, said percentages being by weight based on the total weight of monomeric units in said copolymer.
Claim 3
Dependent Claim
65 words
A copolymer solution according to claim 1 wherein the nonionic surfactant of (D) has the formula ##STR5## where R 1 is octylphenyl, di-octylphenyl, nonylphenyl or di-nonylphenyl, n or m is an integer from 2 to 4, a and c are from 3 to 30, R 2 and R 3 are CH 3 or CH 2 CH 3 , and b is from 0 to 10.
Claim 4
Dependent Claim
52 words
A copolymer solution according to claim 1 in which said copolymer is composed of (A) about 92-99 percent (meth)acrylate salt units, (B) about 0-8 percent (meth)acrylic acid units, (C) about 0-8 percent (meth)acrylic lower alkyl ester units, (D) about 1-8 percent surfactant monomer units, and (E) about 0.1-0.5 percent crosslinking monomer units.
Claim 5
Dependent Claim
19 words
A copolymer solution according to claim 1 in which said (meth)acrylic acid salt units (A) comprise sodium acrylate units.
Claim 6
Dependent Claim
42 words
A copolymer solution according to claim 1 in which said alkyl (meth)acrylate units (C) have the general formula CH.sub.2 ═CYZ where Y is hydrogen or CH 3 and Z is ##STR6## where R is alkyl containing from 1 to 4 carbon atoms.
Claim 7
Dependent Claim
38 words
A copolymer solution according to claim 5 in which said alkyl (meth)acrylate units (C) are selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methylacrylate, propyl methacrylate and butyl methacrylate.
Claim 8
Dependent Claim
65 words
A copolymer solution according to claim 1 wherein said surfactant monomer units are the urea reaction product of an isocyanate of the formula ##STR7## where A is an alkylene group of the formula (CH 2 ) n where n is an integer of from 1 to 20, Z is CH 2 ═CH--, CH 2 ═C(CH 3 )--, CH 2 ═CH--CH 2 --, with said surfactant.
Claim 9
Dependent Claim
27 words
A copolymer solution according to claim 1 wherein said surfactant monomer units are the urea reaction product of alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate with said nonionic surfactant.
Claim 10
Dependent Claim
20 words
A copolymer solution according to claim 1 wherein said nonionic surfactant is nonylphenoxy poly[(oxyethylene) 9 .5 (oxypropylene) 2 ] amine.
Claim 11
Dependent Claim
30 words
A copolymer solution according to claim 1 in which said polyethylenically unsaturated crosslinking monomer is selected from the group consisting of diallyl phthalate, vinyl crotonate, allyl methacrylate, and divinyl benzene.
Claim 12
Dependent Claim
29 words
A copolymer solution according to claim 1 in which the major portion of said (meth)acrylate salt monomeric units (A) are obtained by hydrolysis of lower alkyl (meth)acrylate monomeric units.
Claim 13
Dependent Claim
18 words
A copolymer solution according to claim 11 in which said solution has a pH greater than about 7.
Claim 14
Dependent Claim
30 words
A copolymer solution according to claim 1 in which the major portion of said (meth)acrylate salt units (A) are obtained by neutralization of the carboxyl groups of (meth)acrylic acid monomers.
Claim 15
Dependent Claim
19 words
A copolymer solution according to claim 13 in which said solution has a pH of at least about 6.
Claim 16
Dependent Claim
27 words
A copolymer solution according to claim 1 wherein said surfactant units comprise the urea reaction product of isocyantoethylmethacrylate and nonylphenoxy poly[oxyethylene) 9 .5 (oxypropylene 2 ] amine.
Claim 17
Dependent Claim
31 words
A copolymer solution according to claim 1 wherein said surfactant units comprise the urea reaction product of alpha-, alpha-, dimethyl-m-isopropenyl benzyl isocyanate and nonylphenoxy poly[(oxyethylene) 9 .5 (oxypropylene) 2 ] amine.
References Cited (Backward Citations)
US4514552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |