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US 4,303,565 AGranted
Composition comprising ester of epoxy, unsaturated fatty acid dimer or trimer and acid containing addition polymer, and aqueous coating compositions prepared therefrom
AssigneeMobil Oil Corporation
InventorMichael A. Tobias
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Abstract
Non-gelled compositions containing hydroxy ester copolymer having carboxyl groups and substantially free of oxirane groups are disclosed which are the esterification reaction product of (a) acidic addition copolymer; and (b) a polyepoxide which has been partially defunctionalized by reaction with a dimer or a trimer of a fatty acid. The resulting composition is neutralized with amine, is self-emulsifiable in water and is useful for coatings.
Claims8
A stable aqueous emulsion comprising an adduct containing carboxyl groups and substantially free of oxirane groups, which adduct is the esterification reaction product of
- (a) an acidic addition copolymer comprising a solution copolymer of alpha, beta monoethylenically unsaturated monomers containing at least 10 weight percent of alpha, beta monoethylenically unsaturated carboxylic acid monomer based on the total weight of the monomers;
- and
- (b) a partially defunctionalized epoxy resin containing free epoxide groups, which is the reaction product of polyepoxide and a dimer or trimer of an unsaturated fatty acid containing 12 to 24 carbon atoms;
- in which at least a portion of the carboxyl groups in said adduct are reacted with base to render the composition self-emulsifiable in water.
1 more element
Dependencies are inferred from the claim text.