Production of poly(arylene sulfide sulfone) with excess water to

Details Production of poly(arylene sulfide sulfone) with excess water to Production of poly(arylene sulfide sulfone) with excess water to

1989-06-22

1992-03-03

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

528171, 528226, C08G 7516

Patent

active

050934678

ABSTRACT:
An improved process for producing poly(arylene sulfide sulfone) of increased molecular weight is provided. The process employs an Li salt of C.sub.1 -C.sub.20 carboxylic acid as a polymerization auxiliary and is carried out in an organic amide solvent by reacting a dihalogenated aromatic sulfone with an alkali metal sulfide in the presence of 10-15 moles of water per mole of the alkali metal sulfide at temperatures within the range of from 160.degree. C. to 230.degree. C.

REFERENCES:
patent: 3354129 (1967-11-01), Emonds, Jr. et al.
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: 4808698 (1989-02-01), Bobsein et al.
Patent Abstracts of Japan, vol. 12, No. 40(C-474(2887) (1987).

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