Process for preparing polyarylene sulfides under reduced pressur

Details Process for preparing polyarylene sulfides under reduced pressur Process for preparing polyarylene sulfides under reduced pressur

1989-08-01

1993-03-16

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

C08G 7516

Patent

active

051945800

ABSTRACT:
A process for preparing a polyarylene sulfide involves dehydrating a mixture of a hydrous sulfur source and an organic polar solvent under a reduced pressure in a rectification tower and contacting a dihalogen aromatic compound with a dehydrated sulfur source in the organic polar solvent.
This process provides the polyarylene sulfide with a white color and a higher molecular weight.

REFERENCES:
patent: 3919177 (1975-11-01), Campbell
patent: 4038263 (1977-07-01), Edmonds, Jr. et al.
patent: 4371671 (1983-02-01), Anderson

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