Process for producing a polyarylene sulfide

Details Process for producing a polyarylene sulfide Process for producing a polyarylene sulfide

1988-03-07

1989-06-20

Bleutge, John C.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524779, 525537, 528388, C08G 7514

Patent

active

048409863

ABSTRACT:
A polyarylene sulfide having a high molecular weight is produced at low cost and without causing any pollution problems through a polymerization reaction between a dihalogenated aromatic compound and an alkali metal sulfide in an aprotic polar solvent by adding from about 0.05 to about 5 moles of calcium chloride per mole of the dihalogenated aromatic compound after the conversion of the dihalogenated aromatic compound has reached about 60 to about 98 mol % and allowing the reaction to proceed. Such a polyarylene sulfide is very useful for utilization in extrusion of films, fibers, etc.

REFERENCES:
patent: 4038263 (1977-07-01), Edmonds et al.
patent: 4495332 (1985-01-01), Shiiki et al.
patent: 4588789 (1986-05-01), Scoggins et al.
patent: 4645828 (1987-02-01), Iizuka et al.

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