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1. (WO2016194359) PROCESS FOR PRODUCING HIGHLY UNSATURATED FATTY ACID OF HIGH PURITY IN HIGH YIELD

Pub. No.:    WO/2016/194359    International Application No.:    PCT/JP2016/002612
Publication Date: Fri Dec 09 00:59:59 CET 2016 International Filing Date: Tue May 31 01:59:59 CEST 2016
IPC: C07C 67/58
C07C 67/62
C07C 69/587
C11B 3/02
Applicants: BIZEN CHEMICAL CO., LTD.
備前化成株式会社
Inventors: TABATA, Hiroshi
田畑 宏
TAIRA, Tetsuro
平 哲郎
FUJII, Jun
藤井 淳
MISAWA, Yoshihisa
三澤 嘉久
SHIMIZU, Yoshio
清水 芳雄
Title: PROCESS FOR PRODUCING HIGHLY UNSATURATED FATTY ACID OF HIGH PURITY IN HIGH YIELD
Abstract:
A process for producing a highly unsaturated fatty acid with a high purity in high yield is provided, the process mitigating drawbacks of conventional techniques. Provided is a method for purifying a highly unsaturated fatty acid and/or a derivative thereof, the method including a step (a) in which a first raw material including the substance(s) and a first aqueous silver salt solution are contacted with each other and stirred and a first oily layer and a first aqueous layer are recovered, a step (b) in which the first aqueous layer is separated into a second aqueous silver salt solution and the substance(s), and a step (c) in which the first oily layer and the second aqueous silver salt solution are contacted with each other and stirred and this mixture is separated into an oily layer and an aqueous layer, thereby obtaining a second aqueous layer containing the substance(s).