Chisso Corporation

Maruzen Petrochemical Company, Limited

Chisso Corporation & Maruzen Petrochemical Co., Ltd.

Masaru Sameshima

Kazuhiro Yamada

Tadao Ishibashi

Takashi Kuroda

Suetou Hayashida

Kyoichiro Kimura

The present invention relates a process to a process of producing an opacified molded product composed mainly of a polypropylene resin. More particularly, according to the present invention, there is provided a process of producing an opacified stretched molded product having a total light transmittance of 50% of less and a density of 0.89 or less including a composition including 100 parts by weight of polypropylene and 3 to 40 parts by weight of a cyclopentadiene petroleum resin and/or a hydrogeneated cyclopentadiene petroleum resin, the molded product being a product stretched in at least one direction. Also provided are methods of producing a resin composition comprising 100 parts by weight of a crystalline polypropylene and 30 to 40 parts by weight of a copolymer resin comprising a copolymer of a cyclopentadiene compound and an aromatic hydrocarbon or its hydrogenated product, and a stretched molded product thereof.

Process for producing an opacified molded product

The present invention relates to an opacified molded product composed mainly of a polypropylene resin. More particularly, according to the present invention, there are provided an opacified stretched molded product having a total light transmittance of 50% or less and a density of 0.89 or less comprising a composition comprising 100 parts by weight of polypropylene and 3 to 40 parts by weight of a cyclopentadiene petroleum resin and/or a hydrogenated cyclopentadiene petroleum resin, the molded product being a product stretched in at least one direction. Also provided are a resin composition comprising 100 parts by weight of a crystalline polypropylene and 30 to 40 parts by weight of a copolymer resin comprising a copolymer of a cyclopentadiene compound and an aromatic hydrocarbon or its hydrogenated product, a stretched molded product thereof.

Opacified molded product

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Chiba, Japan

Masaru Sameshima