Process for production of polyarylenesulfides

Details Process for production of polyarylenesulfides Process for production of polyarylenesulfides

1991-01-14

1993-01-12

Kight, III, John

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

Synthetic resins

From sulfur-containing reactant

528370, 528371, 528373, 528374, 528381, 528384, C08G 7514

Patent

active

051791943

ABSTRACT:
Disclosed herein is a process for the production of a polyarylenesulfide, wherein an alkali metal sulfide is reacted with a dihalo-aromatic compound in an organic amide solvent. The process comprises causing at least one compound selected from the oxides and hydroxides of alkaline earth metals to exist in a proportion not less than 0.01 mole but less than 0.1 mole per mole of the alkali metal sulfide charged in the reaction system, and performing the reaction of the alkali metal sulfide and dihalo-aromatic compound while raising the temperature by at least two stages in the presence of water in an amount defined in a specific range. A high-molecular weight linear polyarylenesulfide can be provided without use of a crosslinking agent or a polymerization aid.

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