Mitsubishi Gas Chemical Company, Inc.

Hitachi Shipbuilding & Eng. Co., Ltd.

Hiroyuki Koda

Hiroyuki Yoshizaki

Yoshio Inoue

Yutaka Kojima

Shiro Gomyo

Takeaki Megumi

Shiro Tsuchiya

Takashi Ikeno

Toshiaki Izumita

Shinichi Fukuda

Kunio Hamaya

A process is disclosed for producing powdery polycarbonate from a polycarbonate solution which comprises:

Process for producing powdery polycarbonate from a polycarbonate solution

A process for producing polycarbonate oligomers by the reaction of dihydroxy compounds with phosgene, which comprises contacting a mixture of a dihydroxy compound and an aqueous alkali solution with phosgene in the presence of an organic solvent in a tubular reactor to perform a first-stage reaction, introducing the first-stage reaction mixture into a tank-type reactor equipped with a stirrer and containing the aqueous alkali solution and a solution in the organic solvent of a polycarbonate oligomer formed by the reaction of the first-stage reaction product in a second stage, and performing the second-stage reaction while stirring the reaction mixture in the tank-type reactor and maintaining it at a predetermined temperature by sufficient removal of the heat of reaction.

Process for producing polycarbonate oligomers

A transparent and scratch resistant coating composition is disclosed, together with a process for producing the composition and applying it to molded articles, wherein the composition comprises a partially hydrolyzed carbon-functional silane derived from an aminoalkylalkoxysilane and an epoxyalkylalkoxysilane, and is applied as a coating to the surface of a plastic article which is thereafter heated and dried.

Coating composition and process for producing coated articles

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Toyonaka, Japan

Hiroyuki Koda