Process for preparing aromatic polysulphones

Details Process for preparing aromatic polysulphones Process for preparing aromatic polysulphones

1974-06-11

1976-04-06

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 793M, C08G 7524

Patent

active

039488578

ABSTRACT:
A process for the preparation of aromatic sulphone copolymers in which a polyaryl sulphone containing repeat units --Ar--SO.sub.2 -- (where Ar is a bivalent aromatic residue which may vary from unit to unit in the polymer chain and at least some of the Ar units have an aromatic ether or thioether group in the polymer chain ortho or para to at least one --SO.sub.2 -- group) is caused to react with an alkali metal salt of at least one halophenol or halothiophenol or with essentially equimolar quantities of an alkali metal salt of at least one dihydric phenol or thiophenol and at least one dihalobenzenoid compound, in which the halogen atoms are activated by an electron-attracting group.

REFERENCES:
patent: 3763103 (1973-10-01), Newton et al.
patent: 3764583 (1973-10-01), Newton et al.

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