Purification of tocopherols

Details Purification of tocopherols Purification of tocopherols

C - Chemistry, Metallurgy

07

D

260/373.4

C07D 311/72 (2006.01)

Patent

CA 1276645

ABSTRACT OF THE INVENTION Tocopherol homologues found in a tocopherol-con- taining feed material can be purified by forming a borate tocopherol ester and then distilling the mater- ial containing the esterified tocopherol to remove the materials boiling at temperatures lower than the ester- fied tocopherol. The borate tocopherol esters remain- ing after distillation are then reacted with a member selected from the group consisting of: Water, methanol, and ethanol to form tocopherol homologues from the borate tocopherol ester, and the boron by product from this reaction is removed. The tocopherol is then recovered by collecting it, distilling it or by any other convenient collection method.

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