Benckiser-knapsack Gmbh

Stephan G Kleemann

Alexander Maurer

Wilhelm Spatz

Rudolf Schmidt

Fritz Wahl

Guenter Claus

Albert Erasmus

Werner Ehret

Copper-amine complexes comprised of a water-soluble copper salt and a polyamide-amine can be used as fungicides without the addition of ammonia, and they form firmly adhering coatings on leaf surfaces.

Copper-containing polymers, a process for their preparation and their

An improved process for the preparation of vinyldiphosphonic acid is disclosed. The process involves elimination of a volatile acid from a 1-(O-acyl)-ethane-1,1-diphosphonic acid. The starting materials may be prepared by reacting 1-hydroxyethane-1,1-diphosphonic acid with the corresponding acid or directly by reacting the acid with phosphorous acid and an acyl anhydride.

Process for the preparation of vinyldiphosphonic acid and salts thereof

The invention provides a process for the production of Maddrell's salt, wherein solid sodium dihydrogen phosphate and/or disodium dihydrogen pyrophosphate, containing catalytic amounts of an acid or of an acid-generating compound statistically distributed therein, is brought to condensation at an elevated temperature.

Process for the production of Maddrell's salt

The invention relates to water-soluble cationic polymers and to their use in leather dyeing. The polymers preferably have K values of from about 20-45 and are obtained by reacting polyacrylonitrile or acrylonitrile copolymers in the presence of alcohols or polyols, optionally in the presence of a sulfur-containing catalyst.

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Schriesheim, Germany

Stephan G Kleemann