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

1976-11-12

1978-06-06

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4100

Patent

active

040936660

ABSTRACT:
Ethylene glycol monomethyl ether formals of the formula [CH.sub.3 O(CH.sub.2 CH.sub.2 O).sub.n /.sub.2 CH.sub.2 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.degree. to 125.degree. C at atmospheric pressure and in the presence of, as a catalyst, a strong acid having a pK value of less than 4, and distilling off the water in the form of an azeotropic mixture.

REFERENCES:
patent: 2331367 (1943-10-01), Baggett
patent: 2785949 (1957-03-01), Kress
patent: 2796401 (1957-06-01), Matuszak et al.
patent: 2796423 (1957-06-01), Cottle et al.
patent: 2800513 (1957-07-01), Hall et al.
patent: 3329614 (1967-07-01), Milnes et al.
patent: 3435077 (1969-03-01), Henckel et al.

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