POLYACETAL RESIN COMPOSITION STRUCTURE AND PROCESS FOR PRODUCING THE SAME

摘要

The object of the present invention is to provide a polyacetal resin composition structure having a good surface appearance, a low molding shrinkage and excellent properties through the formation of an interpenetrating network dispersion structure in a composition comprising a polyacetal resin and a polystyrene resin incorporated therein. The constitution of the present invention is that a polyacetal resin (A), a polystyrene resin (B) and a filler (C) having a larger surface tension at the melt kneading temperature than that of at least the component B and a mean particle diameter of 0.05 to 50 .mu.m are melt-kneaded with each other in a weight ratio satisfying the relationship represented by the following formulae (1) and (2): B/(A + B) = 0.05 to 0.5 (by weight) (1) C/(B + C) = 0.1 to 0.7 (by weight) (2).