Method for processing compositions containing...

Details Method for processing compositions containing... Method for processing compositions containing...

2007-05-01

2007-05-01

Keys, Rosalynd (Department: 1621)

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

Organic compounds

Oxygen containing

C568S603000

Reexamination Certificate

active

10570804

ABSTRACT:
A process is proposed for distillatively working up an aqueous composition which comprises 1,1,2.2-tetramethoxyethane, glyoxal dimethyl acetal and methanol, wherein the workup of this composition is carried out in a dividing wall column to form low boiler, medium boiler and/or high boiler fractions, and a dividing wall is disposed in the longitudinal direction in the dividing wall column to form an upper common column region, a lower common column region, a feed section having rectifying section and stripping section and a withdrawal section having stripping section and rectifying section, and the aqueous composition is fed into the middle region of the feed section.

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“Gloyoxal Derivatives. V. Reaction of Alcohols with Glyoxal” J.M. Kliegman et al.J. Org. Chem., vol. 38, No. 3 (1973) pp. 556-560, no month provided.
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