Method for removing micro polynary arene in natural vitamine E
The invention relates to a process for removing trace quantity of multicomponent aromatic hydrocarbons from natural vitamin E by using natural vitamin E as the solute, inert organic solvent as the solvent, charging 5-6% of removing agent at the presence of nitrogen protection, controlling the temper...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention relates to a process for removing trace quantity of multicomponent aromatic hydrocarbons from natural vitamin E by using natural vitamin E as the solute, inert organic solvent as the solvent, charging 5-6% of removing agent at the presence of nitrogen protection, controlling the temperature to be 60 deg. C, mixing through external circulation, filtering, condensing, then refining through molecular distillation. |
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