| 摘要 |
PURPOSE:To provide the titled filler which gives an epoxy resin compsn. having improved electrical and mechanical characteristics, by coating the surface of an inorg. filler with a co-hydrolyzate of specified silicon compds. or a hydrolyzate of a co-condensate of said silicon compds. CONSTITUTION:The titled filler is obtd. by coating the surface of an inorg. filler with a co-hydrolyzate of an organo silicon compd. of formula I (wherein R is a 1-18C alkyl, phenyl, vinyl, methacryloylpropyl; X is a hydrolyzable group; m is 1, 2; n is 2, 3; m+n=4), such as methyl-trimethoxysilane, and an organosilicon compd. of formula II [wherein R' is gamma-glycidoxypropyl, beta-(3,4-epoxycyclohexyl)ethyl; X is a hydrolyzable group], such as gamma-glycidoxypropyltrimethoxysilane, or a hydrolyzate of a co-condensate of said compds. Heretofore, blending of a large quantity of an inorg. filler with an epoxy resin has a disadvantage that both electrical and mechanical characteristics are deteriorated. However, this disadvantage can be eliminated by the above treatment. |
