Patent ID: 6720079
Filing Date: 2004-04-13
Classification: C08G,C08L,C09D,Y10S,Y10T

Abstract:
A thermosetting powder composition, comprising an epoxy compound crosslinking agent and a polyester having terminal tertiary carboxyl groups, said polyester being prepared by reacting(a) 8.1 to 35 mol of an aliphatic or cycloaliphatic polyol with (b) 9.1 to 36 mol of an aliphatic, cycloaliphatic or aromatic polycarboxylic acid to form a prepolyester, and then by reacting said prepolyester with (c) 1.6 to 2.8 mol of an aliphatic, cycloaliphatic or aromatic compound having a tertiary carboxyl group, and either a primary or secondary carboxyl group or a primary or secondary hydroxyl group, the number of moles of (a), (b) and (c) being relative for 1 mole of said polyester, and said polyester having an acid number of from 15 to 50 mg KOH/g.