Catalytic hydrogenation of 3-hydroxypropanal to 1,3-propanediol

US6342646B1 · kind B1 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Thomas Haas · Munster, DE
• Bernd Jaeger · Emmelshausen, DE
• Willi Hofen · Rodenbach, DE
• Rudolf Vanheertum · Alzenau, DE

Key dates

• Filing date: Aug 25, 1999
• Grant date: Jan 29, 2002
• Expiry date: Aug 25, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/79
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention provides an improved process for the hydrogenation of 3-hydroxypropanal to 1,3-propanediol which comprises purifying an aqueous solution of 3-hydroxypropanal by contacting said aqueous solution with a purifying agent prior to hydrogenation.