| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for refining a fatty acid methyl ester (FAME) which contains its polymer formed by its oxidation. <P>SOLUTION: The method comprises a step of forming a thermally oxidized fatty acid methyl ester by thermally oxidizing the fatty acid methyl ester, a step of obtaining a mixed liquid by mixing the thermally oxidized fatty acid methyl ester with a nonpolar solvent, and a step of leaving the mixed liquid to stand to effect phase separation into a lower phase precipitate and an upper phase liquid followed by separating the upper phase liquid and evaporating the nonpolar solvent from the upper phase liquid. In this method, the mixed ratio of the polymerized fatty acid methyl ester in the solution formed by the oxidative deterioration of the fatty acid methyl ester may be 5-15 vol.%. <P>COPYRIGHT: (C)2009,JPO&INPIT |
