Deutsche Gelatine-fabriken Stoess & Co. Gmbh

Deutsche Gelatine-fabriken Stoess Ag

Agfa-gevaert Ag

Peter Koepff

Klaus Braumer

Helmuth Stahl

Klaus Wagner

Franz Moll

Bruno Mucke

Wilfried Babel

Alexander Muller

Wolfgang Graesser

Kurt Marggrander

Eberhard Dick

Angelika Turowski

Reinhard Schreiber

Herbert Gareis

A novel biodegradable, water-resistant polymer material which can be produced with defined material properties is suggested, in particular in the form of foils, films, strips, masses, molded articles or the like, this material consisting essentially of a product of the cross-linking reaction of polysaccharides and/or polypeptides, the hydroxyl, amino, imino, thiol and/or carboxyl groups of which are derivatized at least partially in a non-radical reaction with agents which include groups cross-linkable in a process step following the derivatization and separate therefrom.

Biodegradable, water-resistant polymer material

A process for making gelatine films, in particular sheet gelatine, from powdered gelatine includes the following steps: The powdered gelatine with the addition of water is plasticized by the application of shearing forces at an elevated pressure and an elevated temperature, the plasticized mass is pressed in the form of a film through a slotted die, the film is drawn off the slotted die under tension and the taut film is dried.

Process for making gelatine films

In a foodstuff, the salt content present as such therein and imparting the flavor thereto is reduced by up to 50% by weight, without noticeable detriment to the flavor, by adding collagen hydrolysate.

Method for reducing the salt content in a foodstuff

Gelatine granules obtained by plasticizing conventional gelatine consist of solid gelatine particles with a water content of from 1 to 12% by weight, with a particle size of from 0.1 to 10 mm, with an entrapped air content of less than 1% by volume and with a melt flow index greater than 1 g/10 min at 110 degrees C. The granules are thermoplastic and solid or hollow molded articles can be made from them like from conventional plastics by extrusion, injection molding, blow molding and the like.

Gelatine granules as well as methods and apparatus for their manufacture

The production of a photosensitive silver halide emulsion by precipitation of the silver halide in the presence of gelatine, flocculation and washing of the silver halide precipitated in the presence of the gelatine and redispersion with addition of more gelatine, precipitation being carried out in the presence of a gelatine having a gold number of at most 10 .mu.mol/g gelatine and a cysteine content of at most 6 ppm and redispersion being carried out with a gelatine having a gold number of at least 23 .mu.mol/g gelatine, leads to an emulsion of uniform grain distribution in which undesirably high fogging is avoided.

Production of a silver halide emulsion

Agents for the treatment of arthroses contain peptides soluble in cold water, more specifically those from the group of hydrolyzed collagens. The peptides soluble in cold water are used for the treatment of arthroses and for the preparation of agents for the treatment of arthroses, respectively.

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Heidelberg, Germany

Peter Koepff