Patent ID: 8378031

Claim:
A coating composition which is free of gloss flattening agents yet still produces a cured film having a low gloss of less than 70 gloss units at an angle of incidence of 60°, as measured according to ASTM D 2457, said coating composition comprising: (A) a first copolymer having at least one linear polymer strand having a weight average molecular weight of at least 1,500 Daltons and epoxy functionality with an equivalent weight of no more than 500; (B) a second copolymer having at least one linear polymer strand having a weight average molecular weight of at least 1,500 Daltons and carboxylic acid functionality with an equivalent weight of no more than 1,500; wherein said first copolymer is the reaction product of at least one first ethylenically unsaturated monomer and at least one epoxy monomer; wherein said second copolymer is the reaction product of at least one second ethylenically unsaturated monomer and at least one carboxylic acid monomer; wherein said at least one carboxylic acid monomer is reacted in an amount of at least 6.5% by weight based on the combined weight of said at least one second ethylenically unsaturated monomer and said at least one carboxylic acid monomer to produce said second copolymer; wherein said epoxy functionality of said first copolymer and said carboxylic acid functionality of said second copolymer are reactive with one another to form the cured film; wherein said second copolymer has functionality X″ which is selected from the group consisting of phenolic functionality, carbamate functionality, alkoxy silane functionality, and isocyanate functionality; and a cross-linking agent reactive with said functionality X″ of said second copolymer.