发明授权
- 专利标题: Recovery of tocopherols
- 专利标题(中): 恢复生育酚
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申请号: US654483申请日: 1996-05-28
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公开(公告)号: US5646311A公开(公告)日: 1997-07-08
- 发明人: Tracy K. Hunt , Lutz Jeromin , Wilhelm Johannisbauer , Bernhard Gutsche , Volkmar Jordon , Herbert Wogatzki
- 申请人: Tracy K. Hunt , Lutz Jeromin , Wilhelm Johannisbauer , Bernhard Gutsche , Volkmar Jordon , Herbert Wogatzki
- 申请人地址: PA Plymouth Meeting
- 专利权人: Henkel Corporation
- 当前专利权人: Henkel Corporation
- 当前专利权人地址: PA Plymouth Meeting
- 主分类号: B01J31/02
- IPC分类号: B01J31/02 ; B01J31/08 ; C07C67/03 ; C07C67/54 ; C07D311/72 ; C07C69/24
摘要:
Starting from a mixture containing tocopherol, fats and/or fat derivatives, more particularly fatty acids, and optionally sterol and/or sterol derivatives, the free fatty acids present in the mixture are esterified with an alcohol. The mixture is then transesterified with an alcohol in the presence of a basic catalyst. After the transesterification, the excess lower alcohol is distilled off from the reaction mixture. The transesterification catalyst and the glycerol present, if any, are removed and the fatty acid alkyl ester is distilled off from the mixture. Distillation of fatty acid alkyl esters can be accomplished with a packed column in sequence with a wiped film evaporator. The simultaneous recovery of tocopherol and sterol is possible. Tocopherols and sterols can be separated by the crystallization of sterols from a blend of organic solvents.
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