Patent ID: 6696583
Filing Date: 2004-02-24
Classification: C07C,C11C

Abstract:
A method for the preparation of fatty acid alkyl esters by transesterification, comprising the steps of:(i) performing a transesterification reaction wherein an ester phase, comprising fatty acid alkyl esters, and a glycerol phase, comprising fatty acids, are formed; (ii) collecting the glycerol phase formed in step (i); (iii) treating the glycerol phase collected in step (ii) to form a fatty acid phase comprising fatty acids; (iv) combining the fatty acid phase of step (iii) with triglycerides and fatty acids to form a mixture; (v) esterifying fatty acids in the mixture formed in (iv) with an alcohol to form an esterification mixture comprising triglycerides and fatty acid alkyl esters; and (iv) transesterifying the esterification mixture formed in (v) with an alcohol to form further fatty acid alkyl esters.