Process for preparing sorbic acid by thermal cleavage
AssigneeNutrinova Nutrition Specialties & Food Ingredients GmbH
InventorsDaniel Decker, Guenter Roscher, Christoph Mollenkopf, Erwin Weiss, Stefan Purps
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Abstract
The invention relates to a process for preparing sorbic acid by thermal cleavage in a solvent of the polyester prepared from crotonaldehyde and ketene, the cleavage of the polyester being carried out in the presence of 20 to 100% by weight of a secondary or tertiary aliphatic, alicyclic nitrogen- and/or oxygen-containing amine, or aliphatic-aromatic substituted amine, as catalyst.
Claims4
A process for preparing sorbic acid by thermal cleavage in a solvent, of the polyester prepared from crotonaldehyde and ketene, which comprises cleaving the polyester in the presence of about 20 to about 100% by weight based on the polyester used of a
- secondary or tertiary aliphatic or alicyclic nitrogen- or oxygen- or nitrogen- and oxygen-containing amine or
- an aliphatic-aromatic substituted amine, acting as catalyst, the amine boiling at atmospheric pressure above about 100° C.
Dependencies are inferred from the claim text.