Catalyst composition and process for oligomerization of ethylene

US8778827B2 · kind B2 · utility

Assignees

• SAUDI BASIC INDUSTRIES CORPORATION · SA
• Linde GmbH · DE

Inventors

• Vugar O. Aliyev · Riyadh, SA
• Mohammed H. Al-Hazmi · Riyadh, SA
• Fuad Mosa · Riyadh, SA
• Peter M. Fritz · Unterhaching, DE
• Heinz Bölt · Wolfratshausen, DE
• Anina Wöhl · Munich, DE
• Wolfgang Muller · Königsfeld, DE
• Florian Winkler · Munich, DE
• Anton Wellenhofer · Hersbruck, DE
• Uwe Rosenthal · Munich, DE
• Bernd H. Müller · Rostock, DE
• Marko Hapke · Rostock, DE
• Normen Peulecke · Rostock, DE

Key dates

• Filing date: Nov 5, 2008
• Grant date: Jul 15, 2014
• Expiry date: Apr 26, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2531/24
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a catalyst composition comprising: (a) a binuclear chromium(II) complex; (b) a ligand of the general structure (A) R1R2P—N(R3)—P(R4)—N(R5)—H or (B) R1R2P—N(R3)—P(R4)—N(R5)—PR6R7, wherein R1, R2, R3, R4, R5, R6 and R7 are independently selected from halogen, amino, trimethylsilyl, C1-C10-alkyl, aryl and substituted aryl, wherein the PNPN- or PNPNP-unit is optionally part of a ring system; and (c) an activator or co-catalyst, as well as to a process for oligomerization of ethylene.