Patent ID: 7504460
Filing Date: 2009-03-17
Classification: C08G,H01L

Abstract:
1. A curable composition, comprising (i) a binder comprising at least one epoxy compound of the structure:  wherein X is an aromatic ring or a six membered cycloaliphatic ring, m is from about 0 to about 2, n is from about 1 to about 3, Z is an epoxy group of empirical formula C2H3O, p is a number from about 2 to about 3, and (ii) a cross-linking agent comprising at least one of 1,3-bis(3-aminophenoxy)benzene, 1,3-bis(4-aminophenoxy)benzene, or 1,4-bis(4-aminophenoxy)benzene, wherein the curable composition has a coefficient of thermal expansion (CTE) of no more than 60 ppm/° C. when cured for a time of from about 20 to about 60 minutes at temperature of from about 100 to 240° C.