Flameproof thermoplastic resin compositions

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United States of America Patent

PATENT NO 5643981
SERIAL NO

08333073

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Abstract

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The flameproof thermoplastic resin compositions of this invention comprise from 2 to 20 parts by weight of aromatic diphosphates, from 2 to 7 parts by weight of phosphorous compounds and from 0.1 to 2.0 parts by weight of polyfluoroalkyl resins per 100 parts by weight of the resin mixture consisting of from 60 to 98% by weight of polycarbonate resins, from 2 to 40% by weight of styrene-containing graft copolymer resins, and from 0 to 20% by weight of styrene-containing copolymer resins. The structural formula of said aromatic diphosphates is as follows (I): ##STR1## in which, R.sup.1 and R.sup.2 are same or different lower alkyls, R.sup.3 and R.sup.4 are same or different hydrogen atom or alkyl groups, Y is a single bond or --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --S--, --SO.sub.2 --, --O--, --CO--, or --N.dbd.N--, k is 0 or 1, and m is an integer of 0 to 4.

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Patent Owner(s)

Patent OwnerAddress
CHEIL INDUSTRIES INCGYEONGBUK SOUTH KOREA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jang, Bok-Nam Seoul, KR 9 111
Yang, Sam-Joo Seoul, KR 8 121

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