Flame retardant polycarbonate compositions
AssigneeMobay Chemical Corporation
InventorGerard E. Reinert
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Abstract
A flame retardant polycarbonate composition is comprised of a polycarbonate resin, perfluoroalkane sulfonate salt and a halogenated aromatic anhydride.
Claims11
In a flame retardant polycarbonate comprised of a polycarbonate resin and a perfluoroalkane sulfonate salt, the improvement comprising an effective amount of a halogenated aromatic carboxylic anhydride to impart improved flame retardancy to said polycarbonate.
The polycarbonate of claim 1 or claim 10, wherein said halogenated aromatic anhydride is tetrachlorophthalic anhydride.
The polycarbonate of claim 1 or claim 10, wherein said halogenated aromatic anhydride is present at a level of about 0.05 to about 1.0 percent by weight based on the weight of polycarbonate resin.
A polycarbonate comprised of:
- (a) 100 parts by weight of a polycarbonate resin;
- (b) 0.01 to 1 part by weight of a perfluoroalkane sulfonate salt;
- and
- (c) 0.05 to 1 part by weight of a halogenated aromatic carboxylic anhydride.
In a flame retardant polycarbonate comprised of a branched polycarbonate resin and a perfluoroalkane sulfonate salt, the improvement comprising an effective amount of a halogenated aromatic carboxylic anhydride to impart improved flame retardancy to said branched polycarbonate.
Dependencies are inferred from the claim text.