Process for preparing oligomers of butene

US8680353B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Sven Crone · Schifferstadt, DE
• Oliver Ryll · Edenkoben, DE
• Till Blum · Kuantan, MY
• Alexander Weck · Freinsheim, DE
• Rainer Papp · Speyer, DE
• Roland Krokoszinski · Bad Dürkheim, DE
• Heinrich-Josef Blankertz · Hamm (Sieg), DE

Key dates

• Filing date: Nov 19, 2012
• Grant date: Mar 25, 2014
• Expiry date: Nov 19, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/755
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing oligomers by continuous oligomerization of butenes is described, wherein a) a feed stream 1) comprising 1-butene and 2-butene in a total concentration of from 10 to 70% by weight and from 10 to 60% by weight of isobutane is reacted until more than 60% by weight of the 1-butene comprised in the feed stream 1 but less than 50% by weight of the 2-butene comprised in feed stream 1 have been converted into oligomers. b) The oligomers obtained in a) are separated off and optionally passed to a further work-up and the remaining residual stream is fed to work-up by distillation. c) Isobutane is separated off by distillation from the residual stream, and d) the isobutane-depleted stream obtained after the work-up by distillation c) is reacted to form oligomers.