Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Patent
1988-11-03
1990-05-01
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
C08G 7514
Patent
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.
Alfes Franz
Dorf Ernst-Ulrich
Traenckner Hans-Joachim
Anderson Harold D.
Bayer Aktiengesellschaft
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