Branched aromatic polyaryl-ether sulphones

Details Branched aromatic polyaryl-ether sulphones Branched aromatic polyaryl-ether sulphones

1974-01-29

1976-06-01

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 336R, 260 338R, C08G 7523

Patent

active

039608158

ABSTRACT:
A branched, high molecular-weight polyaryl-ether sulphone which is the reaction product of approximately equimolar amounts of an aromatic dialkali metal bishydroxylate and a bis-(halogen-aryl) compound, whose aryl nuclei are linked by sulphonyl groups, and about 0.01 to about 2 mol %, based on the bishydroxylate or bis-(4-halogenaryl) compound, of an aromatic compound having at least three aromatically linked alkali metal hydroxylate substitutents and/or of a halogenaryl compound having at least three aryl-linked halogen substituents and which is capable of substitution under the reaction conditions of polyaryl-ether sulphone manufacture.

REFERENCES:
patent: 3554972 (1971-01-01), Cornell
patent: 3579475 (1971-05-01), Jones et al.
patent: 3634354 (1972-01-01), Darsow et al.
patent: 3647751 (1972-03-01), Darsow et al.
patent: 3772248 (1973-11-01), Brown et al.

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