Removal of aldehydes from .alpha., .beta.-olefinically unsaturat

Details Removal of aldehydes from .alpha., .beta.-olefinically unsaturat Removal of aldehydes from .alpha., .beta.-olefinically unsaturat

1987-12-01

1989-05-09

Bascomb, Wilbur

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 59, 203 91, 203DIG21, 562600, B01D 334, C07C 57075

Patent

active

048286524

ABSTRACT:
Aldehydes are removed from .alpha.,.beta.-olefinically unsaturated monocarboxylic acids of 3 or 4 carbon atoms by adding hydrazine derivatives and distilling the unsaturated monocarboxylic acids if the hydrazine derivatives used are aminoguanidine and/or aminoguanidine salts in amounts of from 1 to 3 moles per mole of aldehyde.

REFERENCES:
patent: 3725208 (1973-04-01), Maezawa et al.
patent: 3893895 (1975-07-01), Dehnert et al.
patent: 3926744 (1975-12-01), Noll et al.
patent: 4146735 (1979-03-01), Carpenter et al.
patent: 4358347 (1982-11-01), Mettetal et al.

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