Iron oxide pigmented, polycarbonate compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524502, 524611, C08K 322

Patent

active

046508236

ABSTRACT:
The present invention is directed to a thermoplastic molding composition comprising a polycarbonate resin and a pigmenting amount of black iron oxide. The invention is predicated on the surprising findings that this composition yields stable, streaking-free molded articles. A preferred embodiment of the invention comprises a flame retarding agent and iron oxide based pigment selected from the group consisting of black iron oxide and red iron oxide, said flame retarding agent comprising polytetrafluoroethylene; the composition is characterized in that it is streaking-free and in that its flammability rating is at least 5V-1/8" in accordance with UL-94.

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patent: 4049614 (1977-09-01), Baron
patent: 4223100 (1980-09-01), Reinert
patent: 4279244 (1981-07-01), McAlister
patent: 4289745 (1981-09-01), Patil
Transparent Iron Oxide Pigments for Automotive Applications, Wolfgang E. Adams, NATEC '83 Society of Plastics Engineers, Brookfield Center Conn., pp. 19-20.

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