초록 ▼

Coating compositions comprised of (a) a carboxyl functional adduct which is the reaction product of (i) a compound, polymer or oligomer containing pendant and/or terminal hydroxyl or epoxy functional groups and (ii) tartaric acid, malic acid, adipic acid, succinic acid, or anhydrides of said acids;

Coating compositions comprised of (a) a carboxyl functional adduct which is the reaction product of (i) a compound, polymer or oligomer containing pendant and/or terminal hydroxyl or epoxy functional groups and (ii) tartaric acid, malic acid, adipic acid, succinic acid, or anhydrides of said acids; and an anhydride curing agent are disclosed. The coating compositions have accelerated tack-free times and enhanced adhesion to zinc-coated steel and cold rolled steel without the use of a chrome containing wash primer.

대표청구항 ▼

[ What is claimed is:] [1.] A curable coating composition comprising:(a) an adduct having carboxyl and hydroxyl groups comprising the reaction product of:(i) a compound or polymer containing pendant and/or terminal hydroxyl or epoxy groups; and(ii) a material selected from the group consisting of ta

[ What is claimed is:] [1.] A curable coating composition comprising:(a) an adduct having carboxyl and hydroxyl groups comprising the reaction product of:(i) a compound or polymer containing pendant and/or terminal hydroxyl or epoxy groups; and(ii) a material selected from the group consisting of tartaric acid, malic acid, adipic acid, and combinations thereof;wherein the carboxyl functionality of the adduct is in a terminal and/or pendant position and is derived from the reaction of the hydroxyl groups and/or the epoxy groups with the acids of (ii); and(b) an anhydride curing agent.