AMPHIPHILIC BLOCK COPOLYMER-TOUGHENED EPOXY RESINS AND ELECTRICAL LAMINATES MADE THEREFROM

摘要

A curable laminate epoxy 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 provided
that the polyether structure of said immiscible block segment contains at
least one or more alkylene oxide monomer units having at least four carbon
atoms; such that when the epoxy resin composition is cured, the toughness of
the resulting cured epoxy resin composition is increased; (c) a curing agent;
and (d) a curing catalyst. The amphiphilic block copolymer is preferably an
all polyether block copolymer such as a PEO-PBO diblock copolymer or a PEO-PBO-
PEO triblock copolymer.