Th. Goldschmidt Ag

Other

Goldschmidt Ag

Dieter Guhl

Frank Honselmann

Peter Born

Stefan Bergfried

Sven-Uwe Vallerien

Sven Uwe Vallerien

Jan Eberhardt

Frank Houselmann

Uwe Weinbrecht

Volker Von Drach

The cross-linking of cross-linkable compositions containing hydroxyl-bearing and carboxylate-bearing addition polymers of 1,3-butadiene is achieved using catalysts containing alkali metal salts of carboxylic acids.

Catalysts for producing cold or hot cross-linkable masses

Process for preparing silver compounds

The invention relates to an aqueous preparation for the pickling and activation of aluminum-steel composites prior to electroless dip tinning. Specifically, the invention provides pickling/activation solutions for the pretreatment of aluminum-steel composites prior to dip tinning which comprise sulfuric acid, hexafluorosilicic acid, at least one wetting agent, at least one transition metal cation and nitrate and/or nitrite ions.

Pickling/activation solution for the pretreatment of aluminum-steel composites prior to dip tinning

The invention relates to a process for the preparation of SnS,and comprises reacting SnSO,, tin(II) formate or tin(II) oxalate with sulfur under a standard atmosphere or under protective gas without addition of halide-containing substances.

Process for the thermal preparation of tin (IV) sulfides

Acidic electrolyte for dip-tin-plating aluminum alloys, containing tin salts, surfactants and additives yielding halogen ions, fluorine complexes, having the optimum effective halogen content that corresponds to its maximum solubility, being added as additives yielding halogen ions.

Self-regulating, acidic electrolytes for dip-tin-plating aluminum alloys

The invention provides a process for preparing bismuth compounds, in particular a process for preparing highly concentrated solutions of bismuth methanesulfonate, that are stable to hydrolysis. The preparation takes place from aqueous solutions of bismuth compounds of the formula (I)

Process for preparing bismuth compounds

The application relates to a method for the synthesis of finely particulate organic tin (oxy) fluorides by reacting mono-organic or diorganic tin oxides or hydroxides with fluoric acid, the reaction being carried out in the presence of surface active compounds.

Method for synthesizing alkyl tin fluorides

A method is described for the preparation of electrically conductive, infrared-reflecting layers on glass, glass-ceramic or enamel surfaces by spraying and thermally decomposing liquid Sn(IV) compounds and fluorine compounds as preparations containing doping agents on to the surface heated to 400.degree. to 800.degree. C., yet below their softening point, wherein, as liquid preparations, ionically stabilized, organic tin(IV) acid sols are used, which contain aliphatic alcohols or ketones with, in each case, at most 6 carbon atoms in the molecule or esters with a boiling point below 180.degree. C. as liquid, organic medium, as well as fluoride ions in an adequate amount for doping. The preparations are homogenous, stable for a long time, and can readily be diluted with alcohols, ketones, and other polar solvents. The tin oxide layers, produce with the preparations on the substrates, have a high transparency in the wavelength of visible light, a low surface resistance and a high reflection in the infrared wavelength region.

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Speyer, Germany

Dieter Guhl