Patent ID: 6075099
Filing Date: 2000-06-13
Classification: C08G,C09D,Y10S

Abstract:
A curable coating powder composition comprising:(a) a solid epoxidized polyester prepared by epoxidizing a polyester having a melting point of at least about 90.degree. C. and a viscosity of at most 50 Poise at 200.degree. C., wherein said polyester is a polyester prepared by reacting, in a reaction mixture comprising(i) a tetrahydrophthalic acid or anhydride,(ii) at least one cycloaliphatic polyol,(iii) optionally at least one saturated polycarboxylic acid, and(iv) optionally at least one polyhydric alcohol having 5-50 carbon atoms,in a mole ratio of (i):(ii):(iii):(iv) such that acid to hydroxyl equivalent ratio is from about 0.8 to 1 to about 0.96 to 1, and an equivalent ratio of (i) to (iii) is from about 100:1 to about 1:4 and an equivalent ratio of (ii) to (iv) of about 100:0 to about 4:1 until the acid value of the reaction mixture is about 5 or less; and(b) a solid carboxylic acid component having an acid equivalent weight within the range of from about 100 to about 1500.