Molybdenum, Uranium, Or Tungsten (wolfram) Patents (Class 8/621)
  • Catalysed dye systems
    Patent number: 8535391
    Abstract: The present invention is concerned with a dye system for application to a substrate, the dye system comprising: (a) at least one dye precursor; (b) an oxidizing agent; and (c) a catalyst, wherein the catalyst is a homogeneous catalyst or a heterogeneous catalyst. Preferably, the catalyst comprises at least one metal-containing compound. The invention also envisages a method for the coloration of a substrate, the method comprising treating the substrate with the dye system of the invention. In preferred embodiments of the invention, the substrate comprises human hair, natural or synthetic polymers, or textile fibers. In further preferred embodiments, the at least one dye precursor is an organic precursor, the at least one metal derivative for use as a catalyst comprises at least one inorganic metal compound or at least one metal complex comprising at least one organic ligand, and the oxidizing agent is hydrogen peroxide.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: September 17, 2013
    Assignee: University of Leeds
    Inventors: Richard Simon Blackburn, Patrick Columba McGowan, Christopher Martin Pask, Christopher Mark Rayner
  • Coloring agent comprising transition metals
    Patent number: 6648925
    Abstract: The present invention relates to a composition for coloring keratin fibers and a method of using the same. The composition of the present invention contains at least one dye precursor, and one or more clathrate compounds that contain transition metal complexes.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: November 18, 2003
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
    Inventors: Bernd Mayer, Peter Kuhm, Horst Hoeffkes, Gertrud Ewald, Hans-Oscar Stephan, Melita Heller
  • Hair coloring dyes incorporating aryl amines and aryl aldehydes
    Patent number: 5199954
    Abstract: An easily employed, effective and predictable hair dye composition is obtained by combining aryl amines with aryl aldehydes along with an inorganic metal salt having a valence between +1 and +3. By employing this formulation, a permanent, long-lasting, non-fading hair coloring is achieved. In the preferred embodiment, the inorganic metal salt is selected from the group consisting of aluminum chloride, ferric chloride, lithium bromide, manganese chloride, copper chloride, and manganese nitrate. In carrying out the teaching of the present invention, the aryl amine and aryl aldehyde may be applied to the hair separately or in combination, along with the inorganic metal salt. In addition, this inorganic metal salt can be applied after the application and removal of the aryl amine and aryl aldehyde.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: April 6, 1993
    Assignee: Shiseido Co., Ltd.
    Inventors: Thomas M. Schultz, Catherine Grillo, Sanae Kubo
  • Opaque tinting process for contact lens
    Patent number: 4634449
    Abstract: A method is provided for tinting a hydrogel contact lens whereby the tinting effect is not appreciably affected by the underlying color of the iris of the wearer's eyes.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: January 6, 1987
    Assignee: International Hydron Corporation
    Inventor: Evan J. Jenkins
  • Oxidizing medium for dyes
    Patent number: 4321054
    Abstract: An acidic, aqueous oxidant including ionized bromate, iodate and a soluble molybdenum-containing material.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: March 23, 1982
    Assignee: The Dow Chemical Company
    Inventors: Ralph A. Davis, Randy C. Stauffer