Chisso Corporation

Nissan Motor Company Limited

Kinya Mori

Hiroyoshi Asakuno

Kenji Iwai

Osamu Kojima

Yozo Shimomura

Yoshiaki Yasukawa

Teruo Kawasaki

Hiromasa Chiba

Masahiro Tamamushi

Tohru Hanari

Mamoru Nishida

Kiyoshi Matsuda

Ichiro Namiki

Kiyoaki Suzuki

A polypropylene resin composition superior in rigidity, resistances to heat distortion, to secondary deformation, to sink mark forming and to warpage deformation is provided which comprises a specified propylene-ethylene block copolymer and an organic fiber and an optionally added inorganic filler, or a specified modified propylene-ethylene block copolymer and an organic fiber and an optionary added inorganic filler.

Polypropylene resin composition

A polypropylene resin composition superior in rigidity, resistance to heat distortion, to secondary deformation, to sink mark forming and warpage deformation is provided which comprises a specified polypropylene-ethylene block copolymer and an organic fiber and an optionally added inorganic fiber, or a specified modified polypropylene-ethylene block copolymer and an organic fiber and an optionally added inorganic filler.

A highly crystalline polypropylene is provided having:

Highly crystalline polypropylene

A thermoplastic resin composition comprising:

Thermoplastic resin composition

A polypropylene composition capable of producing molded products having superior stiffness, impact resistance, transparency, resistance to whitening on impact on bending and luster is provided, which composition has (i) a styrene-ethylene.multidot.butylene-styrene block copolymer or a styrene-ethylene.multidot.propylene block copolymer each in 5 to 30% by weight based on the weight of the composition, blended with a highly crystalline propylene homopolymer (A) having a relationship between its isotactic pentad ratio (P) and melt flow rate (MFR) represented by an expression of

Polypropylene composition

Polypropylene interior parts for autocars having overcome the drawback of their permanent bulge or secondary deformation due to high temperature exposure is provided, which parts are obtained by molding a material comprising a propylene-ethylene block copolymer prepared by polymerizing propylene at a first stage so that the resulting propylene homopolymer can have a relation between its isotactic pentad ratio (P) and MFR of

Growing community of inventors

Chibashi, Japan

Kinya Mori