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US 6,441,254 B1Granted
Process for preparing trimethylol compounds and formic acid
AssigneeBayer Aktiengesellschaft
InventorsFrank Döbert, Paul Wagner, Alexander Klausener, Wolfgang Eymann, Rolf Feller
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Abstract
The present invention relates to a process for preparing trimethylol compounds and formic acid by reaction of formaldehyde and aldehydes in the presence of a nitrogen base and distillation of the resulting reaction mixture in the presence of an auxiliary.
Claims12
A process for preparing trimethylol compounds and formic acid comprising
- (a) reacting formaldehyde and an aldehyde in the presence of a nitrogen base to form a product mixture containing the trimethylol compound and a formate salt of the nitrogen base,
- (b) removing the trimethylol compound from the product mixture after the reaction, and
- (c) cleaving the formate salts into the free nitrogen base and formic acid by distillation in the presence of an auxiliary.
Dependencies are inferred from the claim text.