STRUCTURE OF POLYOLEFIN-BASE RESIN COMPOSITION AND PRODUCTION THEREOF.

摘要

A molded article of a polyolefin-base resin composition comprising a polyolefin resin and a thermoplastic polyester resin added thereto to form a network structure wherein both resins are dispersed in each other, said molded article retaining excellent characteristics of the polyolefin resin and being improved in otherwise poor thermal resistance and mechanical properties thereof. In the step of melt mixing the polyolefin resin A as a matrix with the thermoplastic polyester resin B, a filler C having a surface tension greater than that of the component B at the melt mixing temperature and a mean particle diameter of 0.05 to 50 mu m is added in such an amount as to satisfy the relation represented by equations (1): B/(A+B)=0.05-0.5 (by weight) and (2): C/(B+C)=0.1-0.7 (by weight).