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Patent Searching and Data


Title:
PRODUCTION OF HIGHLY UNSATURATED ALIPHATIC ACID OR ITS ALKYL ESTER
Document Type and Number:
Japanese Patent JPH1095744
Kind Code:
A
Abstract:

To provide a method for easily producing a highly purified highly unsaturated aliphatic acid or its alkyl ester from a mixture containing a highly unsaturated aliphatic acid or its alkyl ester without generating a thermally denaturated material in a high yield.

A highly unsaturated aliphatic acid or its alkyl ester is fractionated and concentrated by treating a mixture containing the highly unsaturated aliphatic acid or its alkyl ester by a thin film distillation method, a supercritical gas extraction method and a urea addition method, and performing the supercritical gas extraction method in a process after the thin film distilling method.


Inventors:
AKAMA KAZUHIRO
MORI MASATO
NAKANO YOSHIRO
MATSUYOSHI SHIGERU
Application Number:
JP27190896A
Publication Date:
April 14, 1998
Filing Date:
September 20, 1996
Export Citation:
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Assignee:
NOF CORP
International Classes:
C07C51/44; C07C51/487; C07C57/08; C07C67/54; C07C67/58; C07C67/60; C07C69/587; C11C1/08; C11C1/10; (IPC1-7): C07C57/08; C07C51/44; C07C51/487; C07C67/54; C07C67/58; C07C67/60; C07C69/587; C11C1/08; C11C1/10
Attorney, Agent or Firm:
Uchiyama Mitsuru