The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2014
Filed:
Aug. 27, 2012
Applicants:
Bhaskar Bhairavnath Idage, Pune, IN;
Susheela Bhaskar Idage, Pune, IN;
Sivaram Swaminathan, Pune, IN;
Inventors:
Bhaskar Bhairavnath Idage, Pune, IN;
Susheela Bhaskar Idage, Pune, IN;
Sivaram Swaminathan, Pune, IN;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C07D 319/00 (2006.01); C07D 319/12 (2006.01);
U.S. Cl.
CPC ...
C07D 319/12 (2013.01);
Abstract
A process for the synthesis of 100% optically pure L(+)-lactide catalyzed by zinc and tin metal catalysts of less than 150 micron particle size is disclosed. The L-lactide obtained was further purified to obtain lactide of 100% optical purity and acid impurities less than 10 meq/kg.