Hydrogenation process of unsaturated, nitrile-group-containing p

Details Hydrogenation process of unsaturated, nitrile-group-containing p Hydrogenation process of unsaturated, nitrile-group-containing p

1990-11-13

1993-12-21

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524828, 524831, 525339, 5253291, 5253292, 5253293, C08F 804

Patent

active

052722023

ABSTRACT:
Disclosed herein is a process for the selective hydrogenation of the carbon-carbon double bonds of an unsaturated, nitrile-group-containing polymer with hydrogen in the presence of a hydrogenation catalyst. An aqueous emulsion of the unsaturated, nitrile-group-containing polymer is used. Optionally, an organic solvent capable of dissolving or swelling the polymer is caused to exist at a volume ratio of the aqueous emulsion to the organic solvent in a range of from 1:3 to 1:0. A palladium compound is used as the hydrogenation catalyst. The aqueous emulsion is brought into contact with gaseous or dissolved hydrogen while maintaining an emulsified state.

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patent: 4795788 (1989-01-01), Himmler et al.
patent: 4853441 (1989-08-01), Buding et al.

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