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US 5,478,601 AGranted
Waterborne coating composition
AssigneeRohm and Haas Company
InventorsGary R. Larson, Caren A. Puschak, Linda S. Smith, Kurt A. Wood
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Abstract
A waterborne coating composition containing an aqueous dispersion of a polymer, the polymer being substantially free from hydroxyl, primary amino, and secondary amino groups and the polymer bearing at least two active methylene groups, and an aqueous dispersion of a polyisocyanate bearing at least two isocyanate groups is provided. Also provided is a method of improving the chemical resistance of a coating and a substrate coated with the waterborne coating composition.
Claims6
A method of improving the chemical resistance of a coating comprising:
- (a) forming a waterborne coating composition by admixing an aqueous dispersion of a polymer, said polymer being substantially free from hydroxyl, primary amino, and secondary amino groups and said polymer bearing at least two active methylene groups;
- and an aqueous dispersion of a polyisocyanate bearing at least two isocyanate groups;
- (b) applying said coating composition to a substrate;
- and
- (c) curing said coating composition.
2 more elements
Dependencies are inferred from the claim text.