Method for clean preparing natural VE succinic acid monoester
This invention relates to a method of clean preparing natural tocopherol succinic acid monoester. It takes natural tocopherol that content greater than 67 percent as raw material, takes petroleum ether, benzene and such saturation alkane or saturation arene as solvent, takes amines compound as catal...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | This invention relates to a method of clean preparing natural tocopherol succinic acid monoester. It takes natural tocopherol that content greater than 67 percent as raw material, takes petroleum ether, benzene and such saturation alkane or saturation arene as solvent, takes amines compound as catalyzer, reaction temperature 60 to 120 deg, response time 1 to 10 hours. While reaction finish, reclaim excessive raw materials and solvent. reaction product directly use solvent for recrystallization, obtain natural tocopherol succinic acid monoester that content not less than 96 percent. The synthesizing craft simplicity, without waste water effluent, is a clean and green preparation method. |
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