Process for separating off methanol from a mixture of dimethyl c

Details Process for separating off methanol from a mixture of dimethyl c Process for separating off methanol from a mixture of dimethyl c

1994-12-08

1995-10-03

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbonate esters

568917, C07C 2726, C07C 2976, C07C 3104, C07C 6996

Patent

active

054553687

ABSTRACT:
Methanol can be substantially removed from dimethyl carbonate (DMC)/methanol mixtures by absorption on ion exchange resins. The enriched DMC is obtained as filtrate. The absorption is carried out at from -50.degree. C. to +100.degree. C. and 0.1-10 bar.

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Derwent Abstracts, Week 9040, 1 page; DAIL E17 90-301274/40 JO 2212-456-A; "Di:methyl carbonate sepn. by distn. of . . . " Daicel Chem. Ind, Feb. 13, 1989.
Chemical Abstracts, vol. 113, 1990, 1 page; CA#214642m: "Membrane process for separation of organic liquids", M. Pasternak et al.
Bayer's Patent Application (Le A 18 296); DE 2,737,265; "Process for separating off dimethyl carbonate", 3 pages. (1979).

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