| 摘要 |
PURPOSE:To obtain a resin compsn. having improved flowability and improved adhesion between a resin and a filler, by compounding a filler comprising silica particles having cleaned surfaces with a resin. CONSTITUTION:A molding resin compsn. comprised mainly of a resin and an inorg. filler, wherein silica particles having cleaned surface are used as the filler. The silica to be applied may be molten silica, crystalline silica or molten silica partially contg. crystalline components. The silica particles having cleaned surfaces can be readily obtd. by treating silica particles with, for example, an aq. alkali soln. and subsequently removing fine particles by sedimentation etc. The alkali component of the employed aq. alkali soln. is pref. a nitrogen compd. Examples of the nitrogen compds. are ammonia, urea, a prim. sec. or tert. alkylamine of the formula NR<1>R<2>R<3> (wherein R<1>, R<2> and R<3> are each alkyl) and a quat. alkylammonium compd.
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