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. 26, 2013
Filed:
Oct. 31, 2008
Kasturi Venkata Sesha Adinarayana Rao, Andhra Pradesh, IN;
Penumarthy Vijayalakshmi, Andhra Pradesh, IN;
Badari Narayana Prasad Rachapudi, Andhra Pradesh, IN;
Kasturi Venkata Sesha Adinarayana Rao, Andhra Pradesh, IN;
Penumarthy Vijayalakshmi, Andhra Pradesh, IN;
Badari Narayana Prasad Rachapudi, Andhra Pradesh, IN;
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
The present invention provides a process for the enrichment of methyl ricinoleate from castor oil methyl esters by liquid-liquid extraction (LLE) in presence of refined vegetable oils using an aqueous polar solvent. The invention provides an extraction of methyl ricinoleate by a non-destructive extraction method with good yields (75 to 90%) and purity (95 to 99%). The method consists of mixing castor oil methyl esters in a refined normal vegetable oil (feed) in a suitable proportion and selective extraction of methyl ricinoleate in a non-destructive manner by liquid-liquid extraction using a polar aqueous solvent, followed by de-solventization and drying of the solute to get enriched methyl ricinoleate fraction with good yields. The non-hydroxy fatty acid methyl esters of castor oil methyl esters are retained in the vegetable oil and can be used for the preparation of biodiesel or oelochemicals or reused in the process for the enrichment of methyl ricinoleate after removal of non-hydroxy fatty acid either by distillation under reduced pressure or further by liquid-liquid extraction using pure solvent.