Nonaqueous ionic ligand liquids, process for preparing them and their use as catalyst constituents

US6103908A · kind A · utility

Assignee

• Celanese GmbH · US

Inventors

• Helmut Bahrmann · Hamminkeln, DE
• Markus Schulte · Oberhausen, DE

Key dates

• Filing date: Dec 16, 1998
• Grant date: Aug 15, 2000
• Expiry date: Dec 16, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2540/32
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Nonaqueous ionic ligand liquids of the formula (Q.sup..sym.)a A.sup.a-, where Q.sup..sym. is a singly charged quaternary ammonium and/or phosphonium cation or the equivalent of a multiply charged ammonium and/or phosphonium cation and A.sup.a- is a sulfonated triarylphosphine, a process for preparing them and their use as catalyst constituents.