Process for the purification of pentaerythritol

US4329519A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Peter Werle · Gelnhausen, DE
• Gerhard Pohl · St. Georgen, DE

Key dates

• Filing date: Jul 25, 1980
• Grant date: May 11, 1982
• Expiry date: Jul 25, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C29/76
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Crude pentaerythritol is freed from bis-pentaerythritol monoformal impurity by heating it as a dry material to a temperature of 160.degree. to 200.degree. C.