Chisso Corporation

Tooru Fukazawa

Yozo Shimomura

Jun Saito

Akira Yamauchi

Hiroshi Suzuki

Masahiko Taniguchi

Kazuhiro Kimura

Shunji Kawazoe

Yoshitaka Morimoto

Shinichi Akitaya

Tadashi Tanaka

Yasuhiro Shiraishi

Shingo Kikukawa

Hiroyuki Maehara

Hirohisa Ishii

Toshiki Yamamoto

Junichiro Yokota

Hideo Nobuhara

Hitoshi Sato

Akihiko Sanpei

Nobuchika Tabata

Masataka Sugimoto

Yasuhiko Nakagawa

Shouji Kawano

Yoichi Kugimiya

Yuichi Yamanaka

Hiroaki Ito

A plastic molded product of olefin (co)polymer composition comprises 0.01-5.0 weight parts high molecular weight polyethylene with an intrinsic viscosity &eegr; in the range of 15-100 dl/g measured in 135&deg; C. tetralin and preferably 100 weight parts polypropylene. The high molecular weight polyethylene has an average particle size in the range of 1-5000 nm and is finely dispersed as fine granules in the polypropylene, so that high melt strength and high crystallization temperature are attained, enabling various molding methods to be performed with high speed productivity. Using the polymer composition, plastics such as a resin foam, a film, a sheet, a layered plastic article with a coated substrate surface, a hollow plastic article, an injection molded plastic article, a fiber, a nonwoven web or a continuous tube-shaped plastic are provided. The olefin (co)polymer composition is obtained by preparing high molecular weight polyethylene granules using e.g. a titanium transition metal compound catalyst, and adding these, e.g. as a polymerization catalyst of propylene, singly or together with a polyolefin preparing catalyst.

Molded resin articles

Polypropylene/propylene-ethylene copolymer composition and process for the preparation thereof

Polyolefin resin compositions

The present flame retardant compositions of polypropylene resin contains polypropylene as a principal constituent and the following constituents making a total of 100 wt %: (A) silane coupling agent and/or (D) olefinic synthetic rubber, (B) ammonium polyphosphate or melamine-modified ammonium polyphosphate, and (C) one or more nitrogen organic compounds which are producible nonflammable gas products and carbonaceous residues by the pyrolysis of the mixture. Further, the other compositions of polypropylene resin contains (E) polyethylene resin along with the above constituents making a total of 100 wt %. Moreover, the other compositions contains (E) polyethylene resin, and (F) crosslinking agent and (G) thiophosphite along with above constituents making a total of 100 wt. %.

Flame retardant polypropylene resin composition

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Chiba, Japan

Tooru Fukazawa