Process for preparing ethyl tert-butyl ether from technical mixtures of C4 hydrocarbons

US8269050B2 · kind B2 · utility

Assignee

• Evonik Oxeno GmbH · DE

Inventors

• Jochen Praefke · Johannesweg, DE
• Armin Matthias Rix · Marl, DE
• Silvia Santiago Fernandez · Oviedo, ES
• Matthias Groemping · Darmstadt, DE
• Frank Hoeper · Haltern am See, DE
• Udo Peters · Marl, DE
• Joerg Leistner · Haltern am See, DE
• Franz Nierlich · Marl, DE
• Dirk Roettger · Recklinghausen, DE

Key dates

• Filing date: Dec 21, 2006
• Grant date: Sep 18, 2012
• Expiry date: Jun 2, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing ETBE from technical mixtures which comprise at least 1-butene, isobutene, n-butane and 2-butenes, by reacting the isobutene present, distillatively removing a fraction comprising 1-butene and isobutene and again reacting the isobutene present therein to give ETBE.