Process for the manufacture of glycol ether formals

Details Process for the manufacture of glycol ether formals Process for the manufacture of glycol ether formals

C - Chemistry, Metallurgy

07

C

260/647.9

C07C 41/01 (2006.01) C07C 41/00 (2006.01)

Patent

CA 1047539

PROCESS FOR THE MANUFACTURE OF GLYCOL ETHER FORMALS Abstract of the Disclosure: 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 mono- ethyl 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° 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.

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