Before can production method of the resin constituent and the resin constituent, the resin varnish, the prepreg, due to the fact that the epoxy basis

摘要

PROBLEM TO BE SOLVED: To provide a resin composition which exhibits low viscosity when converted into varnish while maintaining excellent dielectric characteristics of PPE, and of which the cured product has excellent heat resistance.;SOLUTION: The resin composition containing: a reaction mixture (A) obtained by making at least a part of epoxy groups of an epoxy resin containing a triazine skeleton, having the triazine skeleton in the molecule, preliminarily react with a hydroxyl group of a low molecular weight polyphenylene ether with a number average molecular weight of 500-3,000; an epoxy resin (B) with an average molecular weight of 600 or less, having two or more epoxy groups in average in a molecule, and having a halogen concentration of less than 0.5 mass% in a molecule; a cyanate resin (C) having two or more cyanate groups in average in a molecule; and a curing accelerator (D), is used.;COPYRIGHT: (C)2011,JPO&INPIT