Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material
Patent
1994-05-31
1996-11-05
Manoharan, Virginia
Distillation: processes, separatory
With chemical reaction
Including step of adding catalyst or reacting material
203 71, 203DIG21, 562600, B01D 334
Patent
active
055713866
ABSTRACT:
The invention provides a continuous process for producing a pure grade of acrylic acid having residual aldehyde levels under 10 parts per million. The process applies two groups of amines sequentially and continuously in selectively reducing acrolein and furfural and may be advantageously conducted in the presence of maleic acid and maleic anhydride impurities.
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Research Disclosure 167066 dated Feb. 20, 1978.
Bauer, Jr. William
Hale Timothy A.
Mason Robert M.
Upmacis Rita K.
Haggard Richard A.
Leightner Joseph F.
Manoharan Virginia
Rohm and Haas Company
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