PHOSPHORUS-CONTAINING MODIFIED EPOXY RESIN, FLAME RETARDANT MATRIX RESIN COMPOSITION, PREPREG AND COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a phosphorus-containing modified epoxy resin using comparatively low cost phosphorous raw material and capable of being impregnated into fibrous base materials without using a solvent, and to provide a flame retardant matrix resin composition, prepreg and composite materials, using the resin.;SOLUTION: The phosphorus-containing modified epoxy resin having ≥1 wt.% phosphorous content and obtained by addition reaction of 1.1-5.0 equivalent epoxy groups of polyvalent epoxy compounds to 1 equivalent P-OH group of acidic phosphate esters represented by general formula (1) is used. (Wherein, R is a ≤18C alkyl; n is 1 or 2; and m is 3-n).;COPYRIGHT: (C)2008,JPO&INPIT