Idemitsu Petrochemical Co., Ltd.

Takuma Aoyama

Akihiko Okada

Komei Yamasaki

Akitoshi Masuyama

Takaaki Uchida

Styrene resin composition and method of manufacturing the same, and method of manufacturing styrene resin molded products

There are disclosed a molding material which is used for molding a styrenic polymer and which is capable of affording moldings that are excellent in solvent resistance and mechanical strength even when produced at a molding temperature almost same as that of ordinary atactic polystyrene, namely at a resin temperature of 260&deg; C. or lower, dispensing with a melt kneading step; a process for producing a molding by molding the above molding material, which process enables to shorten molding cycle time and curtail the producton cost; and the moldings produced thereby. The molding material comprises a dry blend of 10 to 95% by weight of a (A) styrenic polymer having atactic configuration and 2 to 90% by weight of a (B) styrenic polymer having a melting point of 250&deg; C. or lower, a weight average molecular weight of at most 200,000 and mainly syndiotactic configuration.

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Ichihara, Japan

Takuma Aoyama