Process for the preparation of high molecular weight optionally

Details Process for the preparation of high molecular weight optionally Process for the preparation of high molecular weight optionally

1988-01-06

1989-06-06

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

C08G 7514

Patent

active

048373010

ABSTRACT:
This invention relates to a process for the preparation of high molecular weight, optionally branched polyarylenesulphides from alkali metal sulphides, optionally in admixture with alkali metal hydrogen sulphides and aromatic dihalogen compounds, in a polar solvent in the presence of from 0.1 to 6.0 mol-%, preferably from 0.25 to 4.0 mol-%, of an aromatic monoalkoxy or monoalkylthio compound. The polyarylenesulphides obtained have reproducibly adjustable melt viscosities and molecular weights and are distinguished by their reduced tendency to corrosion.

REFERENCES:
patent: 4490522 (1984-12-01), Kawabata et al.
patent: 4535149 (1985-08-01), Ebert et al.

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