PROPYLENE RESIN COMPOSITION AND METHOD FOR PRODUCING THE SAME

摘要

A propylene resin composition comprising 100 parts by weight of two propylen e polymers having specific properties, 0 to 50 parts by weight of a specific elastomer, and 0 to 50 parts by weight of an inorganic filler; and a production process in which two polymers comprising one or more kinds of propylene polymers are melt-kneaded in the following manner. When the difference in viscosity between a propylene homopolymer part forming a base polymer and an amorphous propylene part forming a dispersed phase is small, one of the polymers is melt-kneaded, before the other is directly added thereto and the mixture is melt-kneaded. When the viscosity difference betwe en those is large, the polymers are separately melt-kneaded and then the melts are mixed and further melt-kneaded. The propylene resin composition has high rigidity, high impact resistance, high flowability, and a satisfactory appearance.