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:
Jun. 04, 2019
Filed:
May. 17, 2016
Council of Scientific & Industrial Research, New Delhi, IN;
Indrajit Kumar Ghosh, Dehradun, IN;
Suman Lata Jain, Dehrandun, IN;
Praveen Kumar Khatri, Dehradun, IN;
Siddharth Sankar Ray, Dehradun, IN;
Madhukar Onkarnath Garg, Dehradun, IN;
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
This invention relates to an improved process for the selective production of N-methyl pyrrolidone (NMP) from gamma-butyrolactone and monomethyl amine preferably in aqueous form in the presence of a catalyst under comparatively milder conditions than the processes well known in the prior art of literature. The process is economically viable as it provides higher yield and selectivity for NMP which reduces the cost of separation of NMP from GBL. The catalyst shows good recyclability without significant loss in catalytic activity and no frequent regeneration is required.