Sagami Chemical Research Center

Harima Chemicals, Incorporated

Hiroharu Nishigaki

Kiyosi Kondo

Hisao Kondo

Masahiro Hayashi

Kazunaga Yazawa

Yorishige Matsuba

Yoshihisa Misawa

Tetsuya Tsutsumi

Masashi Isozaki

Daisuke Sugimori

[Object] A fatty acid-related polyunsaturated compound can be selectively purified using an industrially operable successive method under moderate conditions. [Content] A highly purified fatty acid-related polyunsaturated compound is obtained by a process comprising steps of forming a complex with silver on account of the high degree of unsaturation of the fatty acid-related polyunsaturated compound, isolating the complex from other fats on account of the hydrophilicity of the complex and then applying dissociating procedures to the complex to obtain the fatty acid-related polyunsaturated compound as a target substance on account of the hydrophobicity of the fatty acid-related polyunsaturated compound. As to the procedures for dissociation, addition of a dissociating agent and reduction of silver are disclosed. As to the dissociating agent, various compounds which produce insoluble composition with silver other then water are disclosed. Furthermore, an apparatus appropriately used to carry out this method is also disclosed.

Method of purifying polyunsaturated aliphatic compounds

Growing community of inventors

Kakogawa, Japan

Hiroharu Nishigaki