METHOD FOR INDUSTRIAL PREPARING TOCOPHEROL POLY- ETHYLENE GLYCOL ESTER Russian patent published in 2003 - IPC

FIELD: organic chemistry, chemical technology, vitamins. SUBSTANCE: invention relates to method for industrial preparing tocopherol polyethylene glycol ester. Method is carried out by interaction of tocopherol acetate and ethylene oxide in working capacity in the presence of alkali and the following purification of prepared product. Process is carried out by simultaneous deacylation of tocopherol acetate and oxyethylation of forming tocopherol using alkali for deacylation in the amount 11.7-13.2% of tocopherol acetate mass and for oxyethylation in the amount 0.3-0.5% of tocopherol acetate mass in the mole ratio of tocopherol acetate to ethylene oxide = 1:(25-150). Invention allows using materials storing under normal conditions in opened air, to exclude consumptions for interoperation stages, to reduce labor intensity in production of the end product and to enhance the yield of the end product. EFFECT: improved preparing method. 11 cl, 1 ex