Patent ID: 7923073
Filing Date: 2011-04-12
Classification: C08J,C08L,H05K

Abstract:
1. A curable laminate epoxy resin varnish composition comprising (a) an epoxy resin; (b) an amphiphilic block copolymer containing at least one epoxy resin miscible block segment and at least one epoxy resin immiscible block segment; wherein the immiscible block segment comprises at least one polyether structure; wherein the miscible block segment comprises at least one polyether structure; and wherein the composition of the amphiphilic block copolymer ranges from 90 percent epoxy resin miscible segments of the amphiphilic block copolymer and 10 percent epoxy resin immiscible segments of the amphiphilic block copolymer to 10 percent epoxy resin miscible segments of the amphiphilic block copolymer and 90 percent epoxy resin immiscible segments of the amphiphilic block copolymer; such that when the epoxy resin composition is cured, the toughness, G (c) a curing agent; (d) a curing catalyst; and (e) a solvent.