Patent ID: 6235846
Filing Date: 2001-05-22
Classification: C08G,C09D,Y10T

Abstract:
A curable composition which comprises:(i) an anhydride-functional polymer having a number average molecular weight of at least about 500 and having an average of at least two cyclic carboxylic acid anhydride groups per molecule and wherein the anhydride-functional polymer is the addition polymerization reaction product of (a) 5 to about 40 weight percent of an ethylenically unsaturated monoanhydride monomer; and (b) 1 to about 15 weight percent of an ethylenically unsaturated carboxylic acid monomer copolmyerizable with the ethylenically unsaturated monoanhydride; and (c) 45 to about 94 weight percent of at least one ethylenically unsaturated monomer which is copolymerizable with the ethylenically unsaturated monoanhydride and ethylenically unsaturated acid; and(ii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and(iii) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule; wherein at least one of the compounds (i) or (iii) comprises a film forming polymer.