Patent · US Expired

Process for preparing D,L-Lactide

US5149833A · kind A · utility

27Cited by

3References

7Claims

0Family size

Assignee

Boehringer Ingelheim GmbH · DE

Inventors

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

Key dates

Filing date	Feb 5, 1991
Grant date	Sep 22, 1992
Priority date	—
Expiry date	Feb 5, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D319/12
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

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

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.