Patents Assigned to Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.
  • Effect pigments coated with reactive orientation aids
    Publication number: 20040226480
    Abstract: The subject of the invention is an effect pigment which is coated with surface-modifying agents, wherein the initial pigment has a layer with at least one reactive surface-modifying agent, wherein the surface-modifying agent is a compound which has at least two functional groups which are different from each other and which are spaced by a spacer, chemically bound to the initial pigment. Also described is a process for the production of an effect pigment of that kind.
    Type: Application
    Filed: June 9, 2004
    Publication date: November 18, 2004
    Applicant: Eckart-Werke Standard Bronzepulver-Werke Carl-Eckart GMBH & Co.
    Inventors: Klaus Greiwe, Alfried Kiehl
  • Flowable and pumpable metallic-pigment semifinished product for the production of paints and lacquers
    Patent number: 6503304
    Abstract: A flowable and pumpable aqueous semifinished product of gassing stability for the production of paints and lacquers comprises water, a pre-stabilized metallic pigment and an anticorrosive pigment.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: January 7, 2003
    Assignee: ECKART-Werke Standard-Bronzepulver-Werke Carl Eckart GmbH & Co.
    Inventors: Andreas Korn, Robert Maul
  • Corrosion-stable aluminum pigments and process for the production thereof
    Patent number: 6287695
    Abstract: In aluminum-based metal pigments produced by physical vapor deposition of a metal film and subsequent crushing of the metal film metal surfaces which are exposed after the operation of crushing the metal film and in particular fracture surfaces thereof are covered with a passivating protective layer to afford corrosion stability of those metal pigments.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: September 11, 2001
    Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.
    Inventors: Günter Kaupp, Werner Ostertag, Günter Sommer
  • Process for the production of a pearl shine pigment preparation
    Patent number: 5993526
    Abstract: A pearl shine pigment preparation as a pre-product for a printing ink in ch pearl shine pigment is made into a paste with a binding agent and optionally with a solvent and/or additives and the paste is put into a compact particle form. For that purpose the paste is compressed to form compact particles by tabletting, briquetting, pelleting or extruding. In that compacted form the pearl shine pigment preparation can be used for the production of printing inks, in particular intaglio printing inks.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: November 30, 1999
    Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.
    Inventors: Gunter Sommer, Gunter Kaupp
  • Oxidized colored aluminium pigments, process for their production and their use
    Patent number: 5964936
    Abstract: The invention concerns oxidised aluminium or aluminium alloy pigments having a content of metallic aluminium of not more than 90% by weight with respect to the total weight, wherein the pigments are colored, flake-like, shiny and non-agglomerated, a process for the production thereof and use thereof as special-effect pigments and as base pigments for further colouring with organic or inorganic color pigments.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: October 12, 1999
    Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.
    Inventor: Wolfgang Reisser