Catalyst composition and process for di-, tri- and/or tetramerization of ethylene

US8637721B2 · kind B2 · utility

Assignees

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

Inventors

• 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
• Mohammed H. Al-Hazmi · Riyadh, SA
• Vugar O. Aliyev · Riyadh, SA
• Fuad Mosa · Riyadh, SA

Key dates

• Filing date: Jun 16, 2008
• Grant date: Jan 28, 2014
• Expiry date: Apr 20, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a catalyst composition and a process for di-, tri- and/or tetramerization of ethylene, wherein the catalyst composition comprises a chromium compound, 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, or any cyclic derivatives of (A) and (B), wherein at least one of the P or N atoms of the PNPN-unit or PNPNP-unit is member of a ring system, the ring system being formed from one or more constituent compounds of structures (A) or (B) by substitution and a co-catalyst or activator.