Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1981-07-02
1984-06-12
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D31172
Patent
active
044543298
ABSTRACT:
A tocopherol concentrate having a high tocopherol concentration can be obtained in a high yield by subjecting a deodorized distillate formed as a by-product at the step of deodorizing oils and fats to esterification of free fatty acids by addition of an alcohol or removal of free fatty acids by distillation and then to hydrogenation. A tocopherol concentrate can also be obtained by subjecting a deodorized distillate to esterification by addition of a polyhydric alcohol and then to distillation. Concentrates having a high concentration and a high quality can be obtained in a high yield with a good operation efficiency.
REFERENCES:
patent: 2317353 (1943-04-01), Baxter
patent: 2349271 (1944-05-01), Baxter
patent: 2349789 (1944-05-01), Hickman
Kai Yoshinori
Takagi Yoshiaki
Chan Nicky
The Nisshin Oil Mills Ltd.
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