Production and application of ethylhexylglycerin

The intermediate is formed by the carbonyl addition of 2-ethylhexyl glycidyl ether and acetone under the action of a catalyst, and subjected to acid hydrolysis, neutralization, washing and molecular distillation to obtain ethylhexylglycerol. We investigated the effect of various reaction conditions on the mass and yield of ethylhexylglycerol. The results show that the optimal preparation conditions of ethylhexyl glycerol are as follows: molar ratio of 2-ethylhexyl glycidyl ether to acetone is 1:6, molar ratio of boron trifluoride diethyl etherate to 2-ethylhexyl glycidyl ether It is 1:40, the reaction temperature is 20 °C, the reaction time is 3 h, the hydrolysis temperature is 50 °C, and the hydrolysis time is 3 h. Under these conditions, the yield of ethylhexyl glycerol is greater than 80% and the purity is greater than 99%. Ethylhexyl glycerol can increase the traditional preservative, and after compounding with phenylethyl alcohol, the amount is increased by 0. 8% can be tested by microbial preservative challenge in shampoos.