Method for the production of a mixture of lactide derivatives

US8957229B2 · kind B2 · utility

Assignees

• UHDE INVENTA-FISCHER GMBH · DE
• UHDE GMBH · DE

Inventors

• Rainer Hagen · Leverkusen, DE
• Adam B. Verweij · Aduard, NL
• Udo Muhlbauer · Berlin, DE
• Joachim Schulze · Soest, DE
• Wolfgang Tietz · Biendorf, DE
• Klaus Göhler · Grimma, DE

Key dates

• Filing date: Aug 28, 2009
• Grant date: Feb 17, 2015
• Expiry date: Sep 14, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07B55/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A mixture of cyclic diesters derived from lactic acid and in cases a mixture of a racemate of dilactide may be produced in several different processes. In some instances, the process can thereby start from the corresponding alpha-hydroxycarboxylic acids, the corresponding cyclic diesters or oligomers of the corresponding alpha-hydroxycarboxylic acids.