Method of producing neopentyl glycol

US8394998B2 · kind B2 · utility

Assignee

• OXEA GMBH · DE

Inventors

• Kurt Schalapski · Oberhausen, DE
• Tonia Kretz · Darmstadt, DE
• Thorsten Kreickmann · Oberhausen, DE
• Peter Heymanns · Essen, DE
• Rainer Lukas · Essen, DE
• Rolf Peter Schulz · Dinslaken, DE

Key dates

• Filing date: Jun 12, 2009
• Grant date: Mar 12, 2013
• Expiry date: Nov 20, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C29/141
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a method of producing neopentyl glycol by addition of isobutyraldehyde and formaldehyde in the presence of a tertiary alkylamine as catalyst to give the hydroxypivalinaldehyde with subsequent liquid phase hydrogenation in the presence of a nickel catalyst at a temperature of 80 to 180° C. and at a pressure of 6 to 18 MPa in the presence of an aliphatic alcohol and in the presence of water.