Purification and hydrogenation of sulfolenes

Details Purification and hydrogenation of sulfolenes Purification and hydrogenation of sulfolenes

Filed on

1986-05-16

Date issued

1989-08-29

Examiner

Siegel, Alan

Patent Class

Organic compounds -- part of the class 532-570 series

SubClass

Organic compounds

SubSubClass

Heterocyclic carbon compounds containing a hetero ring...

Other Related Categories

C07D33348

Type

Patent

Status

active

Patent number

048619000

Description

ABSTRACT:
A process for purifying sulfolene-containing streams, which contain polysulfones as impurities, comprises contacting the sulfolene-containing streams with activated carbon. The thus purified sulfolene-containing streams can be hydrogenated to sulfolane, e.g., over a supported nickel catalyst.

REFERENCES:
patent: 3152144 (1964-10-01), Middlebrook
patent: 3252997 (1966-05-01), Riddevikhoff et al.
patent: 3345384 (1967-10-01), Oelderik et al.
patent: 3417103 (1968-12-01), Warner
patent: 3622598 (1971-11-01), Willis
patent: 3928385 (1975-12-01), Huxley
patent: 4188327 (1980-02-01), Kubicek
patent: 4286099 (1981-08-01), Nash et al.
Maeda Chem Abst 49433b, vol 76 (1972).
Hoppe Chem Abst 174532b, vol. 95 (1981).
Encylopedia of Chemical Technology, by Kirk-Othmer, Third Edition, 1978, vol. 4, John Wiley and Sons, pp. 561-569.

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