Solvent for the separation of diolefins from mixtures...

Details Solvent for the separation of diolefins from mixtures... Solvent for the separation of diolefins from mixtures...

B - Operations, Transporting

01

D

23/363, 202/76

B01D 3/40 (2006.01) B01D 11/04 (2006.01) C07C 7/08 (2006.01) C07C 7/10 (2006.01)

Patent

CA 1042834

ABSTRACT OF THE DISCLOSURE: The present invention relates to a process for the se- paration of diolefins from mixtures containing the same and other hydrocarbons, which process comprises subjecting the mixture to liquid-liquid extraction or extractive distillation with, as a solvent, at least one heterocyclic compound having a :ing containing 5 atoms of which three are carbon atoms and two are nitrogen atoms not directly bound to each other, wherein the heterocyclic compound may be saturated or unsaturated, may or may not contain at least one oxygen atom bound to the correspond- ing number of carbon atoms of the ring, and is mono- or dialkylated with at least one nitrogen atom having an alkyl substituent, the or each alkyl group being methyl or ethyl. The heterocyclic compound is used advantageously in admixture with water.

204761

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