Glycosiduronic acids
AssigneeAkzo N.V.
InventorsManfred Schattschneider, Burkhard Weuste, Hans J. Weissen
Life of this patent
Estimating the term…
Abstract
Glycosiduronic acids, such as alkyl glycosiduronic acids or alkenyl glycosiduronic acids, which may be used in the preparation of surfactant compositions, such as detergents and cleansers, are prepared by reacting an oxidized mono-, oligo-, or polysaccharide with up to 10 monomer units with one or more fatty alcohols having 8-22 carbon atoms in the presence of a catalyst, preferably in bulk, and after acetalization removing the excess alcohol. Preferably the oxidized mono-saccharide used is glucuronic acid and/or glucuronic acid-3,6-lactone.
Claims20
A process for the preparation of glycosiduronic acids having
- (a) at least one glycoside unit carrying a carboxyl function directly attached to the glycoside ring, and
- (b) at lest one glycoside unit carrying an acetalically bound hydrocarbon group with 8-22 carbon atoms, the unit defined under a) and b) optionally being the same unit,
- characterized in that an oxidized mono-, oligo-, or polysaccharide with up to 10 monomer units which has at least one glycoside unit carrying a carboxyl function is reacted with one or more fatty alcohols having 8-22 carbon atoms in the presence of a catalyst, and after acetalization the non-reacted alcohol is removed and the glycosiduronic acid product is recovered.
Dependencies are inferred from the claim text.