Catalyst composition and process for oligomerization of ethylene

US10265690B2 · kind B2 · utility

Assignees

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

Inventors

• Anina Woehl · Munich, DE
• Andreas Meiswinkel · Munich, DE
• Heinz Boelt · Wolfratshausen, DE
• Bernd Mueller · Konstanz, DE
• Wolfgang Mueller
• Normen Peulecke · Rostock, DE
• Uwe Rosenthal · Munich, DE
• Marco Harff · Munich, DE
• Mohammed H. Al-Hazmi · Riyadh, SA
• Abdullah Alqahtani · Riyadh, SA

Key dates

• Filing date: Dec 15, 2016
• Grant date: Apr 23, 2019
• Expiry date: Dec 15, 2036

Classification

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

Abstract

A catalyst composition including: (a) a chromium compound; (b) a ligand of the general structure R1R2P—N(R3)—P(R4)—NR5R6 or  (A)R1R2P—N(R3)—P(XR7)R8 or R1R2P—N(R3)—P(XR7)2, with X═O or S,  (B) wherein R1, R2, R3, R4, R5, R6, R7 and R8 are independently C1-C10-alkyl, C6-C20-aryl, C3-C10-cycloalkyl, aralkyl, alkylaryl, or trialkylsilyl, or any cyclic derivatives of (A) and (B), wherein at least one of the P or N atoms of the PNPN-unit or PNP-unit is a member of the ring system, the ring system being formed from one or more constituent compounds of structures (A) or (B) by substitution; and (c) an activator or co-catalyst; and a process for tri- and/or tetramerization.