Flame-retardant polycarbonate resin composition

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United States of America Patent

PATENT NO 6433050
SERIAL NO

09555285

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Abstract

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A flame-retardant polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (A), about 0.01 to about 8 parts by weight of a silicone compound (B) and 0.03 to 5 parts by weight of a metal salt of an aromatic sulfur compound (C) or about 0.01 to about 5 parts by weight of a metal salt of a perfluoroalkanesulfonic acid (D), or further containing about 0.05 to about 5 parts by weight of a fiber-forming fluoropolymer (E), wherein the backbone structure of said silicone compound (B) is branched and said silicone compound (B) comprises organic groups that contain aromatic groups. The flame-retardant polycarbonate resin compositions according to the present invention attain great flame retardance while retaining good impact resistance and moldability unimpaired. They also give outstanding performance from the standpoint of environmental protection because, free from a flame retardant of chlorine, bromine compound or the like, they have no danger of evolving gases that contain any retardant-derived halogen during combustion.

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Patent Owner(s)

Patent OwnerAddress
SUMIKA POLYCARBONATE LIMITEDCHUO-KU TOKYO 103-0016

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iji, Masatoshi Tokyo, JP 70 519
Sato, Ichiro Osaka, JP 62 566
Serizawa, Shin Tokyo, JP 28 155
Shinomiya, Tadashi Osaka, JP 3 28

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