Process for the preparation of tert.-olefins

US5012031A · kind A · utility

Assignees

• EC Erdolchemie GmbH · DE
• BAYER HEALTHCARE LLC · DE

Inventors

• Bernhard Schleppinghoff · Dormagen, DE
• Hans-Ludwig Niederberger · Rommerskirchen, DE
• Christian Gabel · Dormagen, DE
• Peter M. Lange · Leverkusen, DE
• Alfred Mitschker · Odenthal, DE

Key dates

• Filing date: Mar 7, 1989
• Grant date: Apr 30, 1991
• Expiry date: Mar 7, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2531/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Tert.-olefins are obtained in high purity by cleavage of their alkyl ethers, when the catalysts used for this purpose are styrene/divinylbenzene resins which contain sulphonic acid groups and have a macroporous structure and the polymer matrix of which has an internal surface area of at least 400 m.sup.2 /g, a pore volume (porosity) of 0.6-2.5 ml/g and a mean pore diameter of 40-1000 .ANG.. These catalysts show long service lives.