JPS644635A - Thermosetting resin composition - Google Patents

Abstract

PURPOSE:To obtain a thermosetting resin compsn. improved in heat resistance, mechanical properties, moisture resistance, solubility in low-boiling solvents and workability, by blending poly-p-vinylphenols, a reaction product of an N,N'- bisimide compd. of an unsatd. dicarboxylic acid with aminophenol and aniline, and epoxy compd. and a cure accelerator as essential components. CONSTITUTION:This thermosetting resin compsn. contains the four following components A-D as essential components: Poly-p-vinylphenols (A) of formula I (where n is an integer of 10-40), a reaction product (B) of an N,N'-bisimide compd. of an unsatd. dicarboxylic acid of formula II (where R<1> is a divalent group having at least two carbon atoms.; R<2> is a divalent group contg. a double bond between carbon atoms.) with aminophenol of formula III (where R<3> is H, a halogen atom. or an alkyl group) and aniline or a derivative thereof of formula IV (where R<4> and R<5> are H, an alkyl group, a halogen atom., -OCH3 and -OC2H5 which are groups not contg. active hydrogen), an epoxy compd. (C) having at least two epoxy groups in the molecule, and a cure accelerator (D).