| 摘要 |
PROBLEM TO BE SOLVED: To obtain a prepreg which can give an electrical laminate excellent in dielectric characteristics and heat resistance by impregnating a substrate with a resin compsn. contg. a specific epoxy resin, a specific epoxy resin hardener, a specific styrene compd., and a specific solvent. SOLUTION: This prepreg is obtd. by impregnating a substrate with a resin compsn. contg. as the essential components at least one epoxy resin contg. at least one brominated epoxy resin, a copolymer essentially formed from styrene and maleic anhydride as an epoxy resin hardener, a styrene compd. comprising a low (substd.) styrene polymer and/or a styrene-added phenol [e.g. a compd. of formula I (wherein R1 is H or a 1-5C satd. aliph. hydrocarbon group; R2 is a halogen or a 1-8C aliph. or arom. hydrocarbon group; m is 0-3; and n is 3-10) or formula II (wherein n is 1-3)], and a solvent for all the above-described ingredienets and having a b.p. of 100 deg.C or higher. |
