Recovering granular poly(arylene sulfide) particles from a poly(

Details Recovering granular poly(arylene sulfide) particles from a poly( Recovering granular poly(arylene sulfide) particles from a poly(

1982-06-04

1983-11-15

Marquis, Melvyn I.

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

Synthetic resins

From sulfur-containing reactant

264176R, C08G 7514

Patent

active

044157290

ABSTRACT:
A method for recovering granular poly(arylene sulfide) from a polymerization reaction mixture at a temperature above that at which poly(arylene sulfide) is in molten phase comprising polar organic solvent and poly(arylene sulfide) in which, in the presence of a sufficient amount of separation agent to cause a phase separation of molten poly(arylene sulfide) and polar organic solvent, the temperature of the polymerization reaction mixture is reduced sufficiently to solidify the poly(arylene sulfide) to produce a slurry comprising particulate poly(arylene sulfide) in polar organic solvent. In a preferred embodiment a slurry comprising particulate poly(phenylene sulfide) in N-methyl-2-pyrrolidone is produced using water, and optionally an alkali metal carboxylate, as separation agent.

REFERENCES:
patent: 3687907 (1972-08-01), Crouch et al.
patent: 3697487 (1972-10-01), Cines
patent: 3839302 (1974-10-01), Miles
patent: 3919177 (1975-11-01), Campbell

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