Patent ID: 7731786

Claim:
A method of depositing metal on the surface of an insulating substrate, comprising the steps of: (1) applying a dispersion comprising a titanium dioxide conferring properties of oxidation-reduction under light irradiation, a metallic salt supplying metal cation, a sequestering agent for the metallic salt, a liquid film-forming polymeric formulation, a basic compound, an organic solvent and water onto a substrate in the form of a film, (2) drying the polymeric film applied to the substrate by evaporating said organic solvent, (3) irradiating the polymeric film and the substrate by means of ultraviolet radiation and/or laser with a range of wavelengths between 190 and 450 nm and an energy between 25 mJ/cm 2 and 100 mJ/cm 2 and forming a semi conductor titanium dioxide, (4) oxidizing the film and the substrate by the semiconductor titanium dioxide thereby formed together with reducing a metallic cation of the said metallic salt, and (5) forming a layer of metal on the substrate.