Preparation of polyarylene sulphides with ketone or pinacone

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant

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C08G 7514

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active

049219359

ABSTRACT:
This invention relates to a process for the preparation of polyarylene sulphides, preferably polyphenylene sulphide (PPS), whose fusion viscosities can be adjusted to specified values, from alkali metal sulphides and polyhalogenated aromatic compounds in a polar solvent in the presence of a ketone or pinacone. The resulting polyarylene sulphides which have specified fusion viscosities are distinguished by high stability of the melt and low chlorine content. They cause little corrosion in the reaction vessels used for their preparation.

REFERENCES:
patent: 4490522 (1984-12-01), Kawabata et al.
patent: 4698415 (1987-10-01), Sinclair et al.
patent: 4787712 (1988-11-01), Ostlinning et al.

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