Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Reexamination Certificate
2005-05-26
2009-08-18
Manoharan, Virginia (Department: 1797)
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
C203S025000, C203S078000, C203S080000, C203S099000, C203SDIG019, C564S437000
Reexamination Certificate
active
07575660
ABSTRACT:
The invention relates to an energy efficient process for the distillative working-up of aqueous amine solutions that occur in the catalytic hydrogenation of nitroaromatic compounds. In this process, the amine is freed from water and also the water is obtained free from amine and low-boiling compounds and the concentrated low-boiling compounds are obtained.
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Brady Bill
Buse Rainer
Steffens Friedhelm
Bayer MaterialScience AG
Cheung Noland J.
Manoharan Virginia
Mrozinski, Jr. John E.
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