Invention Grant
US08350068B2 Liquid-liquid extraction process for the purification of estolides for use as lubricants
失效
用于纯化用于润滑剂的耳塞体的液 - 液萃取方法
- Patent Title: Liquid-liquid extraction process for the purification of estolides for use as lubricants
- Patent Title (中): 用于纯化用于润滑剂的耳塞体的液 - 液萃取方法
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Application No.: US12667177Application Date: 2009-06-26
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Publication No.: US08350068B2Publication Date: 2013-01-08
- Inventor: Danielle de Oliveira Rosas , Bauer Costa Ferrera , Denise Diniz Leite
- Applicant: Danielle de Oliveira Rosas , Bauer Costa Ferrera , Denise Diniz Leite
- Applicant Address: BR Rio de Janeiro
- Assignee: Petroleo Brasileiro S.A.-Petrobras
- Current Assignee: Petroleo Brasileiro S.A.-Petrobras
- Current Assignee Address: BR Rio de Janeiro
- Agency: Sughrue Mion, PLLC
- Priority: BR0803361 20080630
- International Application: PCT/GB2009/001607 WO 20090626
- International Announcement: WO2010/001098 WO 20100107
- Main IPC: C07C69/74
- IPC: C07C69/74
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.
Public/Granted literature
- US20110092723A1 LIQUID-LIQUID EXTRACTION PROCESS FOR THE PURIFICATION OF ESTOLIDES FOR USE AS LUBRICANTS Public/Granted day:2011-04-21
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