PROCESS FOR THE MANUFACTURE OF GLYCOL ETHER FORMALS

摘要

PROCESS FOR THE MANUFACTURE OF GLYCOL ETHER FORMALS Ethylene glycol monomethyl ether formals of the formula ¢CH3O(CH2CH2O)n!2CH2 in which n is in the range of from 1 to 8, are obtained by reacting at least one ethylene glycol monoethyl ether with a 20 to 60 % by weight aqueous formaldehyde solution in the presence of an aliphatic chloro- or chloro-fluoro-hydrocarbon having a boiling point of from 35 to 125.degree. C at atmospheric pressure and in the presence of a strong acid having a pK value of less than 4 as catalyst, and distilling off the water in the form of an azeotropic mixture.