Flame retardant polycarbonate polyblends

Details Flame retardant polycarbonate polyblends Flame retardant polycarbonate polyblends

1978-03-29

1979-11-13

Ziegler, J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

260 457R, 260 457L, 260 4585R, 260 4585T, 260 4595G, 525150, 525132, 260873, 528198, 528204, 528426, 528491, 528492, 528493, C08L 6700

Patent

active

041743598

ABSTRACT:
The present invention pertains to a halogen-containing, copolycarbonate blend having improved critical thickness and flammability properties comprising an aromatic copolycarbonate comprising the reaction product of an aromatic diphenol, an aromatic thiodiphenol and a carbonic acid derivative, such as phosgene or carbonyl bromide, blended with an effective amount of a halogen-containing compound. In a preferred embodiment, the copolycarbonate blend also contains small amounts of a perfluoro sulfonic or carboxylic acid salt.

REFERENCES:
patent: 3250744 (1966-05-01), Schnell et al.
patent: 3398212 (1968-08-01), Jackson, Jr. et al.
patent: 3912687 (1975-10-01), Haupt et al.
patent: 3978024 (1976-08-01), Mark

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