Isolation of a conjugated diolefin from a C.sub.4 - or C.sub.5 -

Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials

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203 56, 203 58, 203 60, 203 63, 585810, 585862, 585865, 585866, B01D 340, C07C 708

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042785049

ABSTRACT:
A process for isolating a conjugated diolefin from a C.sub.4 - or C.sub.5 -hydrocarbon mixture containing the diolefin, by single-stage or multi-stage extractive distillation using a selective solvent, wherein the selective solvent is a solvent mixture which comprises

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patent: 4081332 (1978-03-01), Hein
The Soviet Chemical Industry, No. 11, Nov. 1971, pp. 719-723.

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