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:
Apr. 15, 2003
Filed:
Apr. 02, 2002
Pankaj Kumar Mondal, Faridabad, IN;
Khem Chand Dohhen, Faridabad, IN;
Rakesh Sarin, Faridabad, IN;
Deepak Kumar Tuli, Faridabad, IN;
Niranjan Raghunath Raje, New Delhi, IN;
Akhilesh Kumar Bhatnagar, Faridabad, IN;
Indian Oil Corporation Limited, Maharashtra, IN;
Abstract
A process for the preparation of CNSL phenoxy carboxylic acid derivatives for use as an additive in a lubricant composition so as to impart improved rust inhibiting properties, including the steps of (a) partially hydrogenating distilled technical cashew nut shell liquid with palladium or nickel or platinum catalyst; to hydrogenate the olefinic chain; (b) reacting cashew nut shell liquid or partially hydrogenated technical cashew nut shell liquid with halogeno carboxylic acid derivatives to obtain unpolymerized cashew nut shell liquid phenoxy carboxylic acid derivatives, the reaction being carried out at a temperature ranging from 20 to 140° C. A lubricant containing a major proportion of a material selected from the group consisting of an oil of lubricating viscosity and a grease; and remainder an additive including CNSL phenoxy carboxylic acid derivative prepared by the foregoing process.