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:
Jan. 29, 2002
Filed:
Jan. 31, 2001
Applicant:
Inventors:
Thengumpillil Narayana Balagopala Kaimal, Pradesh, IN;
Penumarthy Vijayalakshmi, Pradesh, IN;
Bandi Ramalinga, Pradesh, IN;
Ayyagari Ananta Laxmi, Pradesh, IN;
Assignee:
Council of Scientific & Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 6/966 ;
U.S. Cl.
CPC ...
C07C 6/966 ;
Abstract
The present invention relates to a catalyst-free process for the conversion of commercial lactic acid to alkyl ester of carbon C to C which comprises simultaneous hydrolysis of dimers or highpolymers of lactic acid present in commercial lactic acid to free lactic acid and esterification of free lactic acid with an alcohol in the presence of water at a temperature in the range of 130-250° C. for 4-11 hrs at a pressure of 5-25 kg/cm , to obtain desired esters.