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:
Feb. 22, 2005
Filed:
Mar. 14, 2002
Raghunath Vitthal Chaudhari, Maharashtra, IN;
Sunil Shankar Joshi, Maharashtra, IN;
Ashutosh Anant Kelkar, Maharashtra, IN;
Sunil Sadashiv Divekar, Maharashtra, IN;
Raghunath Vitthal Chaudhari, Maharashtra, IN;
Sunil Shankar Joshi, Maharashtra, IN;
Ashutosh Anant Kelkar, Maharashtra, IN;
Sunil Sadashiv Divekar, Maharashtra, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
The present invention provides an improved process for the production of carboxylic acids by the carbonylation of alcohol. The process involves contacting an alcohol with carbon monoxide in the presence of a nickel compound, a heterocyclic organic compound and an iodide promoter to produce the corresponding carboxylic acid. The improvement relates to the use of heterocyclic organic compound as a promoter containing at least two heteroatoms of which at least one is selected independently from S or N, which provides an inexpensive and stable catalyst system.