Th. Goldschmidt Ag

Hans-Gunter Krohm

Erich Ruf

Joachim Giersberg

Sven-Uwe Vallerien

Hartmut Gomm

Gerd Dembinski

Electrically conductive and infrared-reflecting tin oxide layers with a reduced optical irisation intensity on glass, glass ceramic and enamel are produced in that initially a solution of boron, silicon, tin and optionally phosphorus compounds in water and/or organic solvents is applied and converted pyrolytically into a layer of oxides of these elements, the refractive index of which lies between that of the substrate to be coated and that of the tin oxide layer and on this layer, a tin oxide layer is applied pyrolytically in a known manner.

Method for pyrolytically coating glass, glass ceramic and enamel products

Electrically conductive halide doped tin-IV-oxide is disclosed which contains divalent tin in an amount not exceeding 2% by weight and also contains 0.1 to 2.5% by weight, particularly 0.1 to 1.0% by weight, of halide. Methods for producing the tin-IV-oxide are also disclosed. The product is suitable for imparting electric conductivity in the form of a filler or pigment to a variety of products such as plastics, lacquer, varnish, paint, paper, textiles and toners, without discoloration of the products.

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Raesfeld-Erle, Germany

Hans-Gunter Krohm