Arakawa Kagaku Kogyo Kabushiki Kaisha

Mitsui Petrochemical Industries, Ltd.

Arakawa Chemical Industries, Ltd.

Arakawa Kagaku Kogyp Kabushiki Kaisha

Yukiharu Yamada

Masao Maeda

Yutaka Koba

Hideki Sakai

Mikio Nakagawa

Tetsuji Kasai

Kan Matsumoto

Hiroyuki Hori

Kimio Ueda

Junji Tan

Xiaofeng Song

A crystalline thermoplastic resin composition comprises a rosin acid metallic salt and a crystalline thermoplastic resin. Optionally, a compatibilizing agent may also be included. The rosin acid metallic salt, which acts as a crystal nucleating agent, increases the crystallization rate of the crystalline thermoplastic resin and enables the formation of fine crystals of the resin. Thus, the crystalline thermoplastic resin composition can crystallize at a high rate, and provide molded articles having excellent mechanical properties and/or optical properties.

Process for crystal nucleation of crystalline thermoplastic resin

Process for preparing colorless rosins

The present invention relates to a process for preparing a rosin ester, which comprises esterifying a purified product of a disproportionated rosin with an alcohol, and then subjecting the esterified rosin to dehydrogenation in the presence of a dehydrogenating catalyst, a process for preparing a rosin ester, which comprises heating a purified rosin and an alcohol in the presence of a disproportionating catalyst, simultaneously subjecting the resulting rosin to disproportionation and esterification, dehydrogenating the reactant in the presence of a dehydrogenating catalyst, and thereafter adding an organic phosphorus compound to the reaction system, a process for preparing a colorless rosin, which comprises simultaneously subjecting a purified rosin to disproportionation and dehydrogenation in the presence of a catalyst, and then adding an organic phosphorus compound to the reaction system and a process for preparing a colorless rosin, which comprises dehydrogenating a purified disproportionated rosin in the presence of a dehydrogenating catalyst. According to the present invention, rosin esters and colorless rosins which have remarkably improved various properties from the viewpoints of color tone, odor, stability and the like can be cheaply provided.

Process for preparing rosin and colorless rosin comprising

Process for preparing rosin ester and colorless rosin

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Osaka, Japan

Yukiharu Yamada