Chisso Corporation

Akihiko Sanpei

Jun Saito

Yozo Shimomura

Hiroshi Suzuki

Tooru Fukazawa

Polyolefin resin composition

Polyolefin resin compositions

A catalyst component for producing highly crystalline olefin polymers without causing any operational problems and stably and affording therefrom a film having very few occurrence of voids and a superior transparency, and a process for producing the catalyst component, which catalyst component comprises a linear olefin-non-olefin block copolymer having at least one linear olefin block copolymer and at leaast one non-linear olefin polymer block and (a) a titanium trichloride composition or (b) titanium, magnesium, a halogen and an electron donor as components for a carrier, the content of the linear olefin polymer block being 0.1 to 49.5% by weight, the content of the non-linear olefin polymer block being 0.01 to 49.5% by weight, the ratio by weight of the linear olefin polymer block to the non-linear olefin polymer block being 2/98 to 98/2 and in the case of (a), the content of the titanium trichloride composition being 99.89 to 1.0% by weight.

Catalyst component for producing highly crystalline olefin polymers and

A process for producing a highly transparent and highly stiff polypropylene affording a superior molded product is provided,

Process for producing a high-stiffness polypropylene and a highly

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Chiba, Japan

Akihiko Sanpei