Mitsubishi Gas Chemical Company, Inc.

Hiroki Furuhashi

Noriyuki Kato

Shu Yoshida

Kazuaki Kaneko

Keiichi Kameyama

Yoshinori Isahaya

Toshiaki Yamada

Hidefumi Harada

Takehiko Isobe

Maki Ito

Yousuke Shinkai

Atsushi Hirashima

Jun Hagiwara

Jun-ya Hayakawa

Hongyu Liu

Jun-Ya Hayakawa

The present invention is to provide a process for producing a high molecular-weight aromatic polycarbonate resin, the process includes mixing a dialcohol compound represented by the following Formula (1) with a first catalyst to obtain a catalyst composition; mixing the obtained catalyst composition with an aromatic polycarbonate prepolymer to obtain a prepolymer mixture; and obtaining a high molecular-weight aromatic polycarbonate by subjecting the obtained prepolymer mixture to heating treatment under reduced pressure condition. In the Formula (1), Rto Reach independently represent a hydrogen atom, an alkyl group and the like. Q represents a divalent group or a single bond. 

Process for producing a high molecular-weight aromatic polycarbonate resin

To provide a polycarbonate resin composition having a high Abbe's number, high strength and excellent stainability. Disclosed is a polycarbonate resin composition prepared by blending

Polycarbonate resin composition

To provide a polycarbonate resin composition excellent in low-birefringence and strength. Disclosed is a polycarbonate resin composition prepared by blending  

A method for highly polymerizing an aromatic polycarbonate resin, which enables the increase in molecular weight of the aromatic polycarbonate resin satisfactorily while keeping good quality of the resin. An aromatic polycarbonate is linked to an aliphatic diol compound having a boiling point of 240&#xb0; C. or higher (preferably in an amount of 0.01 to 1.0 mole per mole of the total amount of the terminal of the aromatic polycarbonate) through a transesterification reaction in the presence of a transesterification catalyst under reduced pressure conditions (preferably at a reduced pressure ranging from 13 kPaA (100 torr) to 0.01 kPaA (0.01 torr)), thereby increasing the molecular weight of the resulting molecule. The weight average molecular weight (Mw) of the aromatic polycarbonate after the transesterification reaction can be increased preferably by 5,000 or more compared to that of the aromatic polycarbonate before the transesterification reaction.

Process for production of highly polymerized aromatic polycarbonate resin

The invention relates to a method for producing a thermoplastic resin, comprising using a composition at least comprising a fluorene-containing dihydroxy compound represented by the following formula (1) and a fluorene-containing hydroxy compound represented by the following formula (2) in an amount of from 0.5 parts by weight to 1.5 parts by weight relative to 100 parts by weight of the fluorene-containing dihydroxy compound of formula (1). 

Method for producing thermoplastic resin, polyester resin and polycarbonate resin, and their applications

Growing community of inventors

Tokyo, Japan

Hiroki Furuhashi