Appeal No. 95-4300
Application No. 08/165,565
APPENDIX
1. An aromatic brominated polycarbonate/polyester carbonate/silicone polyimide
composition having improved flame resistance and reduced drippage and heat release rate,
comprising by weight:
(A) from about 20 to about 77 parts of an aromatic brominated polycarbonate
resin;
(B) from about 20 to about 77 parts of a polyester carbonate resin;
(C) from about 0.5 to about 10 parts of a silicone-polyimide resin;
(D) from about 0 to about 25 parts of an aromatic polycarbonate having a
molecular weight of from about 40,000 to about 90,000; the sum of (A)-(D) being 100 parts by
weight;
(E) from about 0.05 to about 2.0 parts by weight per 100 parts by weight (A)-(D) of
a metal salt of a monomeric or polymeric halogenated aromatic sulfonic acid or mixtures
thereof, wherein the metal salt is selected from the group consisting of alkali metal salts,
alkaline earth metal salts, and mixtures of the metal salts; and
(F) from about 0.1 to about 5 parts by weight of filler or a pigment effective to lower
the heat release of the composition selected from the group consisting of treated clays, talc,
titanium dioxide, glass particulates, glass fibers, treated silica and carbon black, the parts by
weight of (F) being per 100 parts by weight of the combined parts by weight of (A)-(D).
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