METHOD FOR PRODUCTION OF AROMATIC POLYETHERSULFONS AND COPOLYETHERSULFON KETONES Russian patent published in 1995 - IPC

Abstract RU 2043370 C1

FIELD: automobile industry. SUBSTANCE: desired product is prepared by interaction of bis-phenol having humidity 0.5-10.0 with dihalidarylene sulfone and/or dihalidarylene ketone having humidity 0.5-10.0 The process is carried out in the presence of crystal hydrate of carbonate of alkali metal having humidity 0.5-20.0 in the medium of dimethyl sulfone having humidity 1-20 EFFECT: improves efficiency of the method. 1 tbl

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RU 2 043 370 C1

Authors

Tarasov Vladimir Viktorovich

Narkon Andrej L'Vovich

Sopova Nadezhda Fedorovna

Dates

1995-09-10—Published

1993-01-19—Filed