Patent ID: 6809224
Filing Date: 2004-10-26
Classification: C07C

Abstract:
A process for the removal, by distillation of formaldehyde from reaction solutions containing a methylolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic hydrogen atom &agr; to the carbonyl function or from the reaction of a 2-alkylacrolein or acrolein with water and formaldehyde, this reaction having been carried out in the presence of catalytic amounts of an organic amine wherein the removal is effected in a distillation column and an effective amount of water in the form of steam is added before and/or during the distillation, wherein the added water is in addition to any water present or produced in the reaction of the formaldehyde with said alkanal or from the reaction of said alkylacrolein or acrolein with water and formaldehyde.