公开(公告)号：EP2330177B1

公开(公告)日：2017-03-01

申请号：EP09812855.6

申请日：2009-09-02

申请人： Q.P. Corporation ,  Bizen Chemical Co., Ltd.

发明人： SAKAGUCHI, Hiroyuki ,  KOBAYASHI, Hideaki ,  MISAWA, Yoshihisa ,  URYU, Keisuke ,  SHIMIZU, Yoshio

IPC分类号： C11B7/00 ,  C07C67/60 ,  C07C69/587 ,  C11C1/08 ,  C11C1/00 ,  C07C67/58

CPC分类号： C11C1/005 ,  C07C67/58 ,  C11C1/08 ,  C07C69/587

公开(公告)号：EP2330177A1

公开(公告)日：2011-06-08

申请号：EP09812855.6

申请日：2009-09-02

申请人： Q.P. Corporation ,  Bizen Chemical Co., Ltd.

发明人： SAKAGUCHI, Hiroyuki ,  KOBAYASHI, Hideaki ,  MISAWA, Yoshihisa ,  URYU, Keisuke ,  SHIMIZU, Yoshio

IPC分类号： C11B7/00 ,  C07C67/60 ,  C07C69/587 ,  C11C1/08

CPC分类号： C11C1/005 ,  C07C67/58 ,  C11C1/08 ,  C07C69/587

摘要： A method of obtaining a polyunsaturated fatty acid derivative comprises contacting a mixture of fatty acid derivatives with a silver salt aqueous solution, and adjusting the free fatty acid content in the silver salt aqueous solution 0.2 meq or less per gram of silver when repeatedly using the silver salt aqueous solution. A polyunsaturated fatty acid derivative having high purity and excellent quality can thus be economically obtained.