Process for the preparation of polyarylene sulfide and an appara

Details Process for the preparation of polyarylene sulfide and an appara Process for the preparation of polyarylene sulfide and an appara

1992-12-16

1994-08-30

Marquis, Melvyn I.

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

Synthetic resins

From sulfur-containing reactant

422138, C08G 7516

Patent

active

053429206

ABSTRACT:
High molecular weight polyarylene sulfide prepared by reacting an alkali metal sulfide with a dihaloaromatic compound in an organic amide solvent, wherein a gaseous phase part of a reactor is cooled to thereby condense a part of a gaseous phase in the reactor, and the condensed liquid is refluxed to a liquid phase in the reactor. Higher molecular weight is attained by copolymerization with 0.005 to 1.5 mole percent, based on the alkali metal sulfide, of a polyhaloaromatic compound.

REFERENCES:
patent: 4433138 (1984-02-01), Idel et al.
patent: 4645826 (1987-02-01), Iizuka et al.
patent: 5093469 (1992-03-01), Senga
patent: 5109110 (1992-04-01), Ogata
patent: 5194580 (1993-03-01), Koyama et al.
Database WPI; Derwent Publications Ltd., London, GB, AN 80-23476 & SU-A-676 597 (Elementorganic Fusi) Jul. 30 1979 *abstract*.
European Search Report Application No. EP 92 20 3964 dated Mar. 29, 1993 and Communication No. 92203964.9 dated Apr. 22, 1993.

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