PROCESS FOR PRODUCING LOWER ALKYL ESTER OF FATTY ACID

WIPO Patent Application WO/2007/074592

A1

A process for producing lower-alkyl esters of fatty acids which comprises: an esterification step (A) in which fatty acids contained in a raw material comprising an animal/vegetable fat are esterified with a lower alkyl alcohol using a cation-exchange resin to obtain a reaction mixture containing an ester mixture oil having an acid value of 2 or lower; a transesterification step (B) comprising at least a first-stage step in which the fat contained in the ester mixture oil is transesterified with a lower alkyl alcohol while regulating the amount of an alkali catalyst so as to be in the range of 0.1-1 part by mass per 100 parts by mass of the ester mixture oil according to the acid value; a distillation step (C) in which a liquid distillate containing fatty acid lower-alkyl esters having carbon atoms in smaller numbers is distilled off from the oil phase obtained in the transesterification step (B) to obtain a residue comprising fatty acid lower-alkyl esters having carbon atoms in larger numbers; and a fractionation step (D) comprising at least a step in which the fatty acid lower-alkyl esters having carbon atoms in larger numbers and contained in the residue are separated by distillation into fractions differing in the number of carbon atoms.

TANAKA YOSHIRO (JP)
MATSUO TAKAYUKI (JP)
IZUMI JIRO (JP)

PCT/JP2006/322830

July 05, 2007

November 16, 2006

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LION CORP (JP)
TANAKA YOSHIRO (JP)
MATSUO TAKAYUKI (JP)
IZUMI JIRO (JP)

C11C3/10; C11B3/04; C11B3/10; C11C3/04

JPS51147532A	1976-12-17
JPH04128250A	1992-04-28
JP2001262179A	2001-09-26
JPH0234692A	1990-02-05

SHIGA, Masatake et al. (Yaesu Chuo-k, Tokyo 53, JP)

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