Liquid tetrabutyl ammonium phenolate formulation

US7056855B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Carsten Hesse · Krefeld, DE
• Ursula Jansen · Krefeld, DE
• Johann Rechner · Krefeld, DE

Key dates

• Filing date: Dec 9, 1999
• Grant date: Jun 6, 2006
• Expiry date: Dec 9, 2019

Classification

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

Abstract

A process for preparing a formulation containing tetrabutylammonium phenolate and phenol is disclosed. The process entails combining a solution of tetrabutylammonium bromide in phenol with a solution of sodium phenolate to form a mixture, excess phenol is removed by distillation, and sodium bromide is filtered off. The formulation, that contains tetrabutylammonium phenolate and phenol in a weight ratio of 40:60 to 70:30, has a solidification point of less than 25° C. and finds use as a catalyst constituent.