Stabilized chlorine-containing polymers

Details Stabilized chlorine-containing polymers Stabilized chlorine-containing polymers

1993-02-16

1994-02-01

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524100, 524102, 524357, 524399, C08K 53435

Patent

active

052832732

ABSTRACT:
Chlorine-containing polymers can be stabilized against thermal and actinic degradation by addition of a) a sterically hindered amine, b) a zinc compound, c) a calcium, magnesium and/or barium compound, and d) a 1,3-dicarbonyl compound. Other additives such as phosphites or epoxides can further improve the stabilization.

REFERENCES:
patent: 4102839 (1978-07-01), Crochemore et al.
patent: 4267083 (1981-05-01), Torloting
patent: 4692486 (1987-09-01), Gugumus
patent: 4822833 (1989-04-01), Zappia et al.
patent: 4908398 (1990-03-01), Li Bassi et al.
patent: 4957954 (1990-09-01), Iizuka et al.
patent: 5070128 (1991-12-01), Gay
J. B. Adenyi et al: Polymer Degradation and Stability, 17 (1987) 117-129.

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