Patent ID: 6713595
Filing Date: 2004-03-30
Classification: C08G

Abstract:
A copolyester resin composition having number average molecular weight of from 30,000 to 70,000, determined by GPC, comprising;(i) 0.1 to 30% by weight of aromatic-aliphatic prepolymers prepared by a reaction selected from the group consisting of the following reactions; condensation reaction, an esterification reaction, and an ester-exchange reaction with (a) one or a plurality of aromatic dicarboxylic acid (or an acid anhydride thereof); (b) one or a plurality of aliphatic dicarboxylic acid (or an acid anhydride thereof); and (c) one or a plurality of aliphatic glycol selected from the group consisting of 1,4-butanediol and ethylene glycol; (ii) 40 to 71% by weight of an aliphatic or cycloaliphatic dicarboxylic acid (or an acid anhydride thereof); and (iii) 29 to 60% by weight of an aliphatic or cycloaliphatic glycol or a and-the mixture thereof.