Mitsubishi Gas Chemical Company, Inc.

Kou Tanabe

Kenji Maeda

Toshikazu Umemura

Yutaka Kojima

Hiroyuki Nakano

Toshiaki Izumida

Katsuhiro Yamaguchi

Tadami Kinugawa

Toshiaki Takada

A glass-reinforced polycarbonate resin composition comprising an aromatic polycarbonate resin (a) and, blended therewith, 5 to 60% by weight based on the weight of the composition of a glass reinforcement (b) which has been treated with an acid. The composition has excellent dimensional stability, mechanical strength, heat resistance and electrical characteristics, and is therefore used in industrial fields of cameras, VTR's, facsimiles and the like.

Polycarbonate resin composition

A process for producing a low-particle polycarbonate resin molding material suitable for use as molding material for optical materials is disclosed, which comprises directly supplying a polycarbonate resin wet powder having a water content of from 0.5 to 10.0% by weight and an organic solvent content of from 0.01 to 5.0% by weight, said wet powder, when dried, having a weight average particle diameter of from 5 to 60 mesh, to a vented extruder and extruding the wet powder while venting to obtain pellets containing not more than 20 ppm of a residual halogenated hydrocarbon. The molding material has a greatly decreased solvent content while being freed from a particle content increase.

Process for producing polycarbonate resin molding material having low

Growing community of inventors

Osaka, Japan

Kou Tanabe