Process for the preparation of polyarylene sulfide having a low

Details Process for the preparation of polyarylene sulfide having a low Process for the preparation of polyarylene sulfide having a low

1991-07-02

1992-11-24

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

C07C31922

Patent

active

051664461

ABSTRACT:
Polyarylene sulfide having a much reduced content of impurities is prepared by reacting an aromatic polyhalide with an alkali metal sulfide in the presence of a polar organic solvent and subjecting the resulting polyarylene sulfide subsequently to an acid treatment, filtration through a screen having a mesh size of 50-100 .mu., and washing with, successively, the same solvent as used in the preparation of the polymer, water, an organic or inorganic acid, and water. The resulting polyarylene sulfide has a sodium content of less than 20 ppm.

REFERENCES:
patent: 4029706 (1977-06-01), Crosby
patent: 4734484 (1988-03-01), Alfes et al.
Derwent Abstract; 90-027311/04; Toray Ind. Inc.; Dec. 11, 1989.

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