Patent ID: 9132611
Filing Date: 2015-09-15
Classification: B32B,C08G,C08L,C09J,H05K,Y10T

Abstract:
1. A resin composition comprising a polyamideimide and an epoxy resin with 2 or more glycidyl groups, the polyamideimide having on at least one end of the molecular chain two or more carboxyl groups, wherein the two or more carboxyl groups nearest to each other on the at least one end of the molecular chain comprise respective carbon atoms to which the two or more carboxyl groups are bonded, wherein the respective carbon atoms are separated by at least one carbon atom, and wherein the polyamideimide is obtained by reacting a dicarboxylic acid and a diisocyanate in a proportion of 1.05-1.45 mol of the diisocyanate to 1 mol of the dicarboxylic acid to form a product, wherein the dicarboxylic acid is a diimidedicarboxylic acid, and then further reacting the product with an aromatic tricarboxylic acid which does not undergo dehydrating cyclization.