Hoechst Aktiengesellschaft

Wolfram Fritsche-Lang

Merten Schlingmann

Hans-Matthias Deger

Joachim Thiem

Matthias Kreuzer

Ernst I Leupold

Franz-Josef Dany

Adolf Heinz Linkies

Rudiger Erckel

Helmold Von Plessen

Raimund Franz

Horst Lorke

Werner Gohla

Gert-Wolfhard Von Rymon Lipinski

Karl-Heinz Schonwalder

Process for conditioning waste sulfuric acid

Sucrosetricarboxylic acid can be prepared by oxidizing sucrose with oxygen, if desired in a mixture with inert gases, by means of a more effective catalyst than platinum/alumina. The product can be used in washing agents or as a food additive.

Sucrosetricarboxylic acid and compositions containing the same

A process for the preparation of a mixture of sucrose oxidation products which contains a salt of sucrosetricarboxylic acid and which is obtained by reaction of sucrose with oxygen in an aqueous medium in the presence of a platinum metal/active carbon catalyst at elevated temperatures and neutralization of the reaction product to convert into the salt form, which comprises the reaction being carried out discontinuously, the starting materials being heated stepwise over the course of several hours from room temperature up to 60.degree. to 95.degree. C. and then the reaction product being isolated where appropriate. The oxidation products obtained in this way have, in particular, improved washing properties.

Process for the preparation of a mixture of sucrose oxidation products

Alkylated glycosyl fluorides free from hydroxyl groups can be prepared by converting glycosyl fluorides which still contain hydroxyl groups into the alkylated compounds in the manner of Williamson's ether synthesis in the presence of basic systems by means of alkylating agents.

Process for the preparation of alkylated glycosyl fluorides free from

Polysaccharides built up from anhydroglucose are obtained when glucose or carbohydrates containing glucose as the monomer structural unit are condensed with polyhydric alcohols in hydrogen fluoride. The products may be used as water binding agents and water retaining agents, especially for dietetic foodstuffs.

Process for the preparation of water-soluble polysaccharides, the

Glycosyl halides which are O-acylated or O-alkylated at least in the 2-position are transhalogenated with alkali metal hydrogen difluorides in a polar-aprotic solvent and, if appropriate, the product is anomerized with the addition of less than the stoichiometric amounts of an inorganic fluoride with a Lewis acid character. Depending on the substrate, the glycosyl fluorides with the 1,2-trans or 1,2-cis configuration are obtained.

Process for the preparation of glycosyl fluorides protected on the oxygen

A process for the manufacture of glycosides which comprises reacting a protected hexopyranosyl fluoride with an aglycon or a silyl ether thereof in the presence of a metal fluoride of group IV or V of the periodic table, said metal having an atomic number of at least 22 and being present in the fluoride in a higher, stable and non-oxidizing or weekly oxidizing stage.

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Bensheim, Germany

Wolfram Fritsche-Lang