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:
Mar. 03, 2015
Filed:
Feb. 28, 2011
Applicants:
Parasu Veera Uppara, Maharashtra, IN;
Pavankumar Aduri, Maharashtra, IN;
Mangesh Sakhalkar, Maharashtra, IN;
Uday Ratnaparkhi, Maharashtra, IN;
Inventors:
Parasu Veera Uppara, Maharashtra, IN;
Pavankumar Aduri, Maharashtra, IN;
Mangesh Sakhalkar, Maharashtra, IN;
Uday Ratnaparkhi, Maharashtra, IN;
Assignee:
Reliance Industries Limited, Mumbai, Maharashtra, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 493/00 (2006.01); C07D 493/04 (2006.01);
U.S. Cl.
CPC ...
C07D 493/04 (2013.01);
Abstract
This invention is directed to a process for preparation of acetal derivatives, 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) and 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) by carrying out a dehydrocondensation reaction between an aldehyde and an alditol using an aqueous ionic fluid as the acid catalyst.