Arylene sulfide polymer purification

Details Arylene sulfide polymer purification Arylene sulfide polymer purification

1980-11-07

1983-02-08

Hayes, Lorenzo B.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528483, 528488, C08F 624

Patent

active

043730914

ABSTRACT:
Arylene sulfide polymers containing ash-forming impurities or materials are purified by contacting an aqueous mixture of such polymer with molecular oxygen and a chemical treating agent under conditions sufficient to reduce the ash-forming impurities and concurrently at least partially cure the polymer. In another embodiment, at least partially cured arylene sulfide polymers are treated with a chemical treating agent in the absence of molecular oxygen to stabilize the melt flow of the resin.

REFERENCES:
patent: 3707528 (1972-12-01), Miles
patent: 3717620 (1973-02-01), Rohlfing
patent: 3839302 (1974-10-01), Miles
patent: 3948865 (1976-04-01), Brady et al.
patent: 4025496 (1977-05-01), Anderson et al.
patent: 4071509 (1978-01-01), Edmonds, Jr.

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