US4954559A
Expired / Lapsed
US
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Waterbased methylol (meth) acrylamide acrylic polymer and polyurethane containing coating composition
Assignee: EIDP Inc
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Filing: 1989-09-05
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Granted: 1990-09-04
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Expires: 2009-09-05
Abstract
Abstract A waterbased coating composition containing about 10-30% by weight of film forming binder dispersed in an aqueous carrier; wherein the binder contains about a. 60-90% by weight, based on the weight of the binder, of a methylol (meth)acrylamide acrylic polymer of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof, 1-10% by weight, based on the weight of the acrylic polymer, of methylol methacrylamide, methylol acrylamide or mixtures thereof, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated carboxylic acid, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated hydroxyl containing monomer and the acrylic polymer has a glass transition temperature of -40° to +40° C. and a weight average molecular weight of 500,000 to 3,000,000; and the carboxyl groups of the carboxylic acid are reacted with ammonia to provide a pH to the composition of about 7.0-10.0; b. 10-40% by weight, based on the weight of the binder, of a polyurethane which is either a polyester urethane, polyether urethane or polyacrylourethane; the composition forms an automotive quality clear coat and/or pigmented color coat for automobiles and trucks; and the acrylic polymer can be used to form an automotive quality primer composition.
Inventors
- 👤 Herman C. Den Hartog
- 👤 Eileen E. Konsza
- 👤 James F. Matthews
- 👤 Ervin R. Werner, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:38
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/24
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
177 words
A waterbased coating composition comprising about 10-30% by weight of film forming binder dispersed in an aqueous carrier; wherein the binder consist essentially of about a. 60-90% by weight, based on the weight of the binder, of an methylol (meth)acrylamide acrylic polymer consisting essentially of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof, 1-10% by weight, based on the weight of the acrylic polymer, of methylol methacrylamide, methylol acrylamide or mixtures thereof, 0.5-10% by weight, based on the weight of the acrylic polymer of an ethylenically unsaturated carboxylic acid, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated hydroxyl containing monomer, said acrylic polymer having a glass transition temperature of -40° to +40° C. and a weight average molecular weight of 500,000 to 3,000,000; and the carboxyl groups of the carboxylic acid are reacted with ammonia to provide a pH of about 7.0-10; b. 10-40% by weight, based on the weight of the binder, of a polyurethane selected from the group consisting of polyester urethane, polyether urethane or polyacrylourethane.
Claim 2
Dependent Claim
177 words
A waterbased coating composition comprising about 10-30% by weight of film forming binder dispersed in an aqueous carrier; wherein the binder consist essentially of about a. 60-90% by weight, based on the weight of the binder, of an methylol (meth)acrylamide acrylic polymer consisting essentially of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof, 1-10% by weight, based on the weight of the acrylic polymer, of methylol methacrylamide, methylol acrylamide or mixtures thereof, 0.5-10% by weight, based on the weight of the acrylic polymer of an ethylenically unsaturated carboxylic acid, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated hydroxyl containing monomer, said acrylic polymer having a glass transition temperature of -40° to +40° C. and a weight average molecular weight of 500,000 to 3,000,000; and the carboxyl groups of the carboxylic acid are reacted with ammonia to provide a pH of about 7.0-10; b. 10-40% by weight, based on the weight of the binder, of a polyurethane selected from the group consisting of polyester urethane, polyether urethane or polyacrylourethane.
Claim 3
Dependent Claim
18 words
The coating composition of claim 1 containing pigment in a pigment to binder weight ratio of about 1:100-200:100.
Claim 4
Dependent Claim
74 words
The coating composition of claim 1 in which the acrylic polymer consists essentially of polymerized monomers of an alkyl methacrylate, an alkyl acrylate or mixtures thereof each having 1-12 carbon atoms in the alkyl group, 2-10% by weight of a hydroxy alkyl methacrylate or acrylate having 2-4 carbon atoms in the alkyl group, 0.1-10% by weight of a monoethylenically unsaturated carboxylic acid and 1-10% by weight of methylol acrylamide, methylol methacrylamide or mixtures thereof.
Claim 5
Dependent Claim
20 words
The coating composition of claim 1 in which the acrylic polymer contains up to 20% by weight of polymerized styrene.
Claim 6
Dependent Claim
48 words
The coating composition of claim 4 in which the acrylic polymer consists essentially of about 30-40% by weight methyl methacrylate, 10-20% by weight of styrene, 35-45% by weight of 2-ethylhexyl acrylate, 1-6% by weight methylol methacrylamide, 1-5% by weight of hydroxyethyl acrylate and 1-5% by weight methacrylic acid.
Claim 7
Dependent Claim
67 words
The coating composition of claim 1 in which the acrylic polymer is a graft copolymer consisting essentially of stage I of 10-30% by weight of methyl methacrylate, 1-5% by weight of methlylol methacrylamide and 70-89% by weight butyl acrylate grafted to stage II of 70-80% by weight of butyl acrylate, 5-15% by weight methylol methacrylamide, 5-15% by weight of hydroxyethyl acrylate and 5-9% by weight methacrylic acid.
Claim 8
Dependent Claim
44 words
The coating composition of claim 1 in which the acrylic polymer is a graft copolymer consisting essentially of stages I, II and III, wherein stages I and II comprise methyl methacrylate, butyl acrylate and stage III comprises methyl methacrylate, butyl acrylate and methylol methacrylamide.
Claim 9
Dependent Claim
30 words
The coating composition of claim 1 containing about 0.1-5% by weight. based on the weight of the acrylic polymer, of a crosslinking agent of a carbodiimide or a polyfunctional aziridine.
Claim 10
Dependent Claim
14 words
The coating composition of claim 1 in which the polyurethane is a polyester urethane.
Claim 11
Dependent Claim
64 words
The coating composition of claim 9 in which the polyester urethane consists essentially of polyester polyol of a polyol and a dicarboxylic acid or an anhydride thereof, said polyester polyol is reacted with an organic diisocyanate which in turn is reacted with a hydroxy containing carboxylic acid, said acid being neutralized with a tertiary amine and the resulting product chain extended with a diamine.
Claim 12
Dependent Claim
61 words
The coating composition of claim 10 in which the polyester urethane consists essentially of a polyester polyol of a lactone reacted with a polyol, said polyester polyol is reacted with an organic diisocyanate which in turn is reacted with a hydroxy containing carboxylic acid, said acid being neutralized with a tertiary amine and the resulting product chain extended with a diamine.
Claim 13
Dependent Claim
32 words
The coating composition of claim 9 in which the polyurethane is the reaction product of isophorone diisocyanate, polycaprolactone polyol, trimethylolpropane, polyester of pentanediol and adipic acid, dimethylolpropionic acid and neutralized with triethylamine.
Claim 14
Dependent Claim
14 words
The coating composition of claim 1 in which the polyurethane is a polyether urethane.
Claim 15
Dependent Claim
62 words
The coating composition of claim 13 in which the polyether urethane consists of a polyalkylene glycol having a weight average molecular weight of about 400-4500, said polyalkylene glycol is reacted with an organic diisocyanate which in turn is reacted with a hydroxy containing carboxylic acid, said acid being neutralized with a tertiary amine and the resulting product chain extended with a diamine.
Claim 16
Dependent Claim
16 words
The coating composition of claim 14 in which the polyalkylene glycol consists essentially of polypropylene glycol.
Claim 17
Dependent Claim
13 words
The coating composition of claim 1 in which the polyurethane is a polyacrylourethane.
Claim 18
Dependent Claim
78 words
The coating composition of claim 16 in which the polyacrylourethane consists essentially of a functional acrylic polymer of polymerized ethylenically unsaturated acrylic esters and ethylenically unsaturated monomers containing functional groups selected from the group consisting of carboxyl, hydroxyl, cyano, or glycidyl groups, said functional acrylic polymer is reacted with diisocyanate which in turn is reacted with a hydroxy containing carboxylic acid, said acid being neutralized with a tertiary amine and the resulting product chain extended with a diamine.
Claim 19
Dependent Claim
137 words
The coating composition of claim 1 in which the acrylic polymer consists essentially of polymerized monomers of an alkyl methacrylate, an alkyl acrylate or mixtures thereof each having 1-12 carbon atoms in the alkyl group, 2-10% by weight of a hydroxy alkyl methacrylate or acrylate having 2-4 carbon atoms in the alkyl group, 0.1-10% by weight of a monoethylenically unsaturated carboxylic acid and 1-10% by weight of methylol acrylamide, methylol methacrylamide or mixtures thereof; and in which the polyurethane is a polyester urethane consisting essentially of a polyester polyol of a polyol and a dicarboxylic acid or an anhydride thereof said polyester polyol is reacted with an organic diisocyanate which in turn is reacted with a hydroxy containing carboxylic acid said acid being neutralized with a tertiary amine and the resulting product chain extended with a diamine.
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) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |