Preparation of poly(arylene sulfide/sulfone) polymer with additi

Details Preparation of poly(arylene sulfide/sulfone) polymer with additi Preparation of poly(arylene sulfide/sulfone) polymer with additi

1989-08-03

1991-04-16

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

528391, C08G 7514

Patent

active

050083686

ABSTRACT:
A method for producing a poly(arylene sulfide/sulfone) polymer is provided which comprises: contacting reactants comprising a dihalogenated aromatic sulfone, an alkali metal sulfide, a polar organic compound, at least one base, an alkali metal carboxylate, and, optionally water, under suitable conditions to initiate a polymerization reaction; thereafter adding an amount of water while maintaining polymerization conditions; then terminating the reaction; and recovering the polymer.
The invention method provides for a polymer product wherein the production of low molecular weight product is minimized and high molecular weight yield is maximized.

REFERENCES:
patent: 4016145 (1977-04-01), Campbell
patent: 4102875 (1978-07-01), Campbell
patent: 4127713 (1978-11-01), Campbell
patent: 4301274 (1981-11-01), Campbell
patent: 4645826 (1987-02-01), Iizuka et al.
patent: 4808698 (1989-02-01), Bobsein et al.
patent: 4812539 (1989-03-01), Iizuka et al.
patent: 4812552 (1989-03-01), Cliffton et al.

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