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:
Jan. 08, 2013
Filed:
Jun. 26, 2009
Danielle DE Oliveira Rosas, Rio de Janeiro, BR;
Bauer Costa Ferrera, Proto Alegre, BR;
Denise Diniz Leite, Rio de Janeiro, BR;
Danielle de Oliveira Rosas, Rio de Janeiro, BR;
Bauer Costa Ferrera, Proto Alegre, BR;
Denise Diniz Leite, Rio de Janeiro, BR;
Petroleo Brasileiro S.A.-Petrobras, Rio de Janeiro, BR;
Abstract
A process is described for the purification of estolides for subsequent use as lubricants. This purification process comprises the removal of free fatty acids present in the estolide by liquid-liquid extraction using an alcohol, preferably ethanol or methanol, as solvent, where the total acid number of the estolide after purification is less than 1 mg KOH/g of sample, which endows it with characteristics of oxidation stability suitable for its use as a lubricant.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile