Japan Polychem Corporation

Toyota Jidosha Kabushiki Kaisha

Akira Kobayashi

Takao Nomura

Yuji Fujita

Takayuki Nagai

Hisayuki Iwai

Yoshihiro Sobajima

Masatoshi Matsuda

Mitsuhiro Murayama

Yoshihiro Banno

Osamu Kito

Kunio Iwanami

Masaaki Isoi

This invention provides a propylene-based composition for the molded polypropylene resin articles excellent in resistance to scratching and moldability, and well-balanced properties between high rigidity and high impact strength, and also provides a method for molding the above propylene-based composition, thereby providing high-performance industrial parts and automobile parts, in particular automobile interior parts.

Propylene resin composition and method for molding the same

This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.

Polypropylene resin composition

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Mie, Japan

Akira Kobayashi