Process for the purification of polyarylene sulphides

Details Process for the purification of polyarylene sulphides Process for the purification of polyarylene sulphides

1992-06-12

1993-09-21

Bleutge, John C.

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

Synthetic resins

From sulfur-containing reactant

528502, 525537, C08G 7514

Patent

active

052470636

ABSTRACT:
This invention relates to a process for the purification of optionally branched polyarylene sulphides (PPS). Polyarylene sulphides which have been purified according to the invention are distinguished by the reduced amount of ash-forming impurities contained in them.

REFERENCES:
patent: 4071509 (1978-07-01), Edmonds
patent: 4373091 (1983-03-01), Edmonds
patent: 4522875 (1985-06-01), Still, Jr. et al.
patent: 4576852 (1986-03-01), Burgess et al.
patent: 4617231 (1986-10-01), Hamada et al.
patent: 4639507 (1987-01-01), Alewelt et al.
patent: 4734484 (1988-03-01), Alfes et al.
patent: 4771120 (1988-09-01), Alewelt et al.

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