Color number improvement in polyhydric alcohols by hydrogenation

US6586642B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Matthias Dernbach · Eppelheim, DE
• Detlef Kratz · Heidelberg, DE
• Achim Stammer · Freinsheim, DE
• Mathias Haake · Mannheim, DE
• Michael Koch · Speyer, DE
• Gerhard Schulz · Ludwigshafen, DE

Key dates

• Filing date: Jun 26, 2002
• Grant date: Jul 1, 2003
• Expiry date: Jun 26, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for greatly improving the color index of polyhydric alcohols, especially trimethylolpropane, by hydrogenation comprises using, in the hydrogenation, an alcohol which has already been purified by distillation. The catalysts used are those conventionally employed in hydrogenations, preferably copper, nickel, palladium or ruthenium catalysts.