Isolation of isobutene from c4-hydrocarbon mixtures...

Details Isolation of isobutene from c4-hydrocarbon mixtures... Isolation of isobutene from c4-hydrocarbon mixtures...

C - Chemistry, Metallurgy

07

C

260/719.3

C07C 11/09 (2006.01) C07C 7/148 (2006.01) C07C 41/06 (2006.01) C07C 41/44 (2006.01)

Patent

CA 1133951

O.Z, 0050/033686 Abstract of the disclosure: A process for isolating isobutene from C4-hydrocarbon mixtures containing iso- butene by reacting the mixture with a primary alcohol in the presence of an acid condensing agent, to form the tertiary ether, separating off the unconverted hydro- carbons and decomposing the tertiary ether in the presence of an acid catalyst at an elevated temperature, wherein a primary C3- or C4-alcohol is used and the temperature at which?the reaction.mixture leaves the etherification stage, in which the tertiary ether is formed, is lower than the mean temperature in the etherification stage.

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