Method for purification of lactide
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 26, 1996
Grant Date -
N/A
app pub date -
Dec 2, 1994
filing date -
Dec 8, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for the purification of lactide is provided which permits lactide of high optical purity or DL-lactide of high purity to be produced from crude lactide by the removal of meso-lactide from the crude lactide. This method for the purification of lactide is characterized by causing a mixture containing L-lactide and/or D-lactide together with meso-lactide to contact with water thereby effecting hydrolysis of meso-lactide. This method can remove meso-lactide from crude lactide and produce DL-lactide and/or optically active lactide of high optical purity in high yield and, in the production of optically active lactide, can eliminate the restrictions otherwise imposed on the formation of meso-lactide. Thus, it lends itself to the simplification of the procedure for the synthesis of lactide.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully