Idemitsu Petrochemical Co., Ltd.

Yutaka Azuma

Satoshi Tamura

Toshio Kano

Tsunenosuke Hiramatsu

Keigo Umemoto

Masamichi Kondo

Yoshikatsu Tanaka

Polypropylene resin composition, and film and sheet using the same

A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, [rrrr/(1-mmmm)].times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B.) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid. The employment of this polypropylene resin composition permits, under a good moldability by the calender molding machine, the manufacture of films and sheets having less thickness unevenness, excellent appearance and heat resistance and such flexibility as in molded articles of a plastic polyvinyl chloride.

Polypropylene resin composition

Flexible polypropylene resin compositions, films or sheets made

A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, �rrrr/(1-mmmm)!.times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid. The employment of this polypropylene resin composition permits, under a good moldability by the calender molding machine, the manufacture of films and sheets having less thickness unevenness, excellent appearance and heat resistance and such flexibility as in molded articles of a plastic polyvinyl chloride.

The object of the present invention is to provide a polyethylene resin composition which is improved in anti-blocking and slipping properties, and further in antistatic properties without deteriorating the excellent properties of polyethylene, such as transparency and heat sealability. The inventive polyethylene resin composition comprises

Polyethylene resin composition containing amorphous aluminosilicates for

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Ichihara, Japan

Yutaka Azuma