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. 25, 2014
Filed:
May. 14, 2009
Venkata Padmaja Korlipara, Hyderabad, IN;
Venkata Surya Koppeswara Rao Bhamidipati, Hyderabad, IN;
Satya Bhaskar Potula, Hyderabad, IN;
Badari Narayana Prasad Rachapudi, Hyderabad, IN;
Arun Kumar Singh, Dehradun, IN;
Venkata Padmaja Korlipara, Hyderabad, IN;
Venkata Surya Koppeswara Rao Bhamidipati, Hyderabad, IN;
Satya Bhaskar Potula, Hyderabad, IN;
Badari Narayana Prasad Rachapudi, Hyderabad, IN;
Arun Kumar Singh, Dehradun, IN;
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
A new class of oleochemical based polyol esters of general formula 1 are prepared by esterification of different polyols having 5-6 carbon atoms and 2-4 hydroxyl groups with 10-undecenoic acid or/and undecanoic acid with a hydroxyl value of ≦1.0 mg KOH/g. Wherein R, R, Ris selected from a group consisting of CH—, CHCH—, —CHOCORwherein Ris selected from CH═CH—(CH)— or CH—(CH)—, individually or in combination thereof. The resulting esters were characterized for lubricant properties like viscosity, viscosity index, pour point, flash point and copper corrosion tests. The properties indicate their potential as promising lubricant base stocks for automotive lubricants, metal working oil, hydraulic oil and other industrial applications. Vegetable oils provide most of the desirable lubricant properties such as good boundary lubrication, high viscosity index, high flash point and low volatility. Synthetic esters prepared from renewable resources like vegetable oils exhibit better performance at a lower cost compared to mineral oil based synthetic esters.