Stabilized polycarbonate compositions containing cyclic carbonat

Details Stabilized polycarbonate compositions containing cyclic carbonat Stabilized polycarbonate compositions containing cyclic carbonat

1982-07-28

1983-10-04

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524126, 524133, 524135, 524147, 524151, C08K 515, C08K 552, C08K 553

Patent

active

044079958

ABSTRACT:
Polycarbonates are heat stabilized by the incorporation of a carbonate compound having a boiling point greater than about 250.degree. C. and an organophosphorous compound such as a phosphonite or a phosphite. The amount of the additive compound used in each instance is from 100 to 10,000 parts per million.

REFERENCES:
patent: 3287316 (1966-11-01), Falkai et al.
patent: 3305520 (1967-02-01), Fritz et al.
patent: 3558554 (1971-01-01), Kuriyama et al.
patent: 3578623 (1971-05-01), Weissermel et al.
patent: 3794629 (1974-02-01), Elmers et al.
patent: 4075163 (1978-02-01), Hofer et al.
patent: 4077940 (1978-03-01), Wedel
patent: 4088709 (1978-05-01), Seymour et al.
patent: 4098751 (1978-07-01), Mark et al.
patent: 4221728 (1980-09-01), Jaquiss et al.

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