Process for preparing D,L-Lactide

US5011946A · kind A · utility

Assignee

• Boehringer Ingelheim GmbH · DE

Inventors

• Joachim Hess · Ingolstadt, DE
• Klaus Muller · Meckenbeuren, DE
• Manfred Muller · Berlin, DE

Key dates

• Filing date: May 25, 1990
• Grant date: Apr 30, 1991
• Expiry date: May 25, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D319/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An improved process for the preparation of D,L-Lactide which can be used directly in polymerization reactions.