PURPOSE: To obtain a composition excellent in heat resistance, impact resistance and water resistance, by mixing a resin comprising a cyanic ester component and a bismaleimide component with a liquid epoxy resin, a thermoplastic resin, a liquid polybutadiene resin, etc.
CONSTITUTION: A resin composition comprising 94W20wt.% resin composed of a cyanic ester component and a bismaleimide component with 2W50wt.% liquid epoxy resin, 2W50wt.% thermoplastic resin and 2W50wt.% liquid polybutadiene, liquid butadiene copolymer or liquid butadiene/acrylonitrile copolymer. The epoxy resin used can react with the resin composed of the cyanic ester component and the bismaleimide component, increase its tack and shorten its curing time. Said thermoplastic resin is used to improve impact resistance and is one compatible with the resin composed of the cyanic ester component and the bismaleimide component.
MATSUMOTO TAKESHI
SOMEYA YOSHIAKI
