Process and plant for the conversion of olefinic C.sub.4 cuts to

Details Process and plant for the conversion of olefinic C.sub.4 cuts to Process and plant for the conversion of olefinic C.sub.4 cuts to

1996-05-10

1999-03-02

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

585324, 585326, 585327, 585329, 585518, 585643, 585644, 585646, 585642, C07C 202, C07C 602

Patent

active

058773657

ABSTRACT:
The present invention concerns a process for the conversion of an olefinic C.sub.4 cut to polyisobutene and to propylene by metathesis. The process comprises three successive steps: (1) selective hydrogenation of diolefins with simultaneous isomerisation of 1-butene to 2-butenes, (2) polymerisation of the isobutene, including optional prior extraction of the isobutene, (3) metathesis of 2-butene with ethylene. Part or all of the C.sub.4 cut may originate from the metathesis of an olefinic C.sub.5 cut with ethylene after hydroisomerisation of the C.sub.5 cut. Application to C.sub.4 and C.sub.5 steam cracking cuts.

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patent: 5449852 (1995-09-01), Chauvin et al.
Abstract, Database WPI, Section Ch, Wk. 7217, (JP-B-47 013 251), Derwent Publications Ltd., London, GB.

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