Patents Assigned to Eckart-Werke Standard
-
Patent number: 7172812Abstract: 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: GrantFiled: June 9, 2004Date of Patent: February 6, 2007Assignee: Eckart-Werke Standard Bronzepūlver-Werke Carl-Eckart GmbH & Co.Inventors: Klaus Greiwe, Alfried Kiehl
-
Publication number: 20040226480Abstract: 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: ApplicationFiled: June 9, 2004Publication date: November 18, 2004Applicant: Eckart-Werke Standard Bronzepulver-Werke Carl-Eckart GMBH & Co.Inventors: Klaus Greiwe, Alfried Kiehl
-
Patent number: 6761762Abstract: 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: GrantFiled: January 2, 2001Date of Patent: July 13, 2004Assignee: Eckart-Werke Standard Bronzepulver-Werker Carl-Eckart GmbH & Co.Inventors: Klaus Greiwe, Alfried Kiehl
-
Patent number: 6503304Abstract: 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: GrantFiled: January 16, 2001Date of Patent: January 7, 2003Assignee: ECKART-Werke Standard-Bronzepulver-Werke Carl Eckart GmbH & Co.Inventors: Andreas Korn, Robert Maul
-
Publication number: 20020168484Abstract: 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 passivting protective layer to afford corrosion stability of those metal pigments.Type: ApplicationFiled: June 27, 2002Publication date: November 14, 2002Applicant: Eckart-Werke Standard Bronzepulver-WerkeInventors: Gunter Kaupp, Werner Osteriag, Gunter Sommer
-
Patent number: 6428846Abstract: 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: GrantFiled: June 1, 1999Date of Patent: August 6, 2002Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart & Co.Inventors: Günter Kaupp, Werner Ostertag, Günter Sommer
-
Patent number: 6287695Abstract: 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: GrantFiled: August 7, 1997Date of Patent: September 11, 2001Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.Inventors: Günter Kaupp, Werner Ostertag, Günter Sommer
-
Patent number: 5993526Abstract: 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: GrantFiled: April 22, 1997Date of Patent: November 30, 1999Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.Inventors: Gunter Sommer, Gunter Kaupp
-
Patent number: 5964936Abstract: 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: GrantFiled: February 2, 1998Date of Patent: October 12, 1999Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl Eckart GmbH & Co.Inventor: Wolfgang Reisser
-
Patent number: 5931996Abstract: The invention concerns colored aluminum pigments comprising flake-form aluminum substrates which are coated with a metal oxide layer. The pigments are produced by a process which involves the steps of mixing a ground color pigment with a flake-form aluminum in the presence of a solvent. A metal acid ester is then added to the mixture and is then hydrolyzed to form a metal oxide layer on the aluminum substrate, followed by removal of the solvent and drying of the pigment. The pigments are useful as special-effect pigments in paints, lacquers, coatings, plastic materials, printing inks and cosmetic preparation.Type: GrantFiled: September 2, 1997Date of Patent: August 3, 1999Assignee: Eckart-Werke StandardInventors: Wolfgang Reisser, Denise Mebarek
-
Patent number: 5849072Abstract: Metal pigment dispersions are proposed, which comprise flake-form metal pigments produced by crushing and binding agent or binding agent solution which contain no or less than 0.01% by weight of reaction or decomposition products of fatty acids which result from the reaction with the metal pigment in the presence of oxygen in the air. Also described is a process for the production of those metal pigment dispersions, wherein the metal pigment is crushed with the binding agent in a ball crusher, and the use of those metal pigment dispersions for the production of paints or lacquers and inks, in particular printing inks.Type: GrantFiled: February 15, 1996Date of Patent: December 15, 1998Assignee: Eckart-Werke Standard-Bronzepulver-WerkeInventors: Gunter Sommer, Colin Appleyard
-
Patent number: 5332767Abstract: A synthetic resin-coated metal pigment such as aluminum pigment has a silne coating covalently bonded to the surface of the pigment particles, and a three-dimensionally cross-linked synthetic resin coating covalently bonded to the siloxane coating. Production of the coated pigment comprises production of a silicon-organic coating on the pigment surface and then conversion of that coating into a siloxane coating by hydrolysis and condensation, followed by reaction with a low-molecular compound for forming the cross-linked synthetic resin coating. A range of uses of the coated pigment is also set forth.Type: GrantFiled: January 25, 1991Date of Patent: July 26, 1994Assignee: Eckart-Werke Standard Bronzpulver-Werke Carl Eckart GmbH & Co.Inventors: Wolfgang Reisser, Guenter Sommer
-
Patent number: 4729909Abstract: A process for production of a metal-coated paper, such as for use in cigarette packs having a metal coating containing a binding agent which is applied to a paper backing material by a printing process. The coating includes particles which have a flake structure and which can be fully wetted by the binding agent, as a result of which the particles of metal are so firmly embedded into the coating as to provide sufficient abrasion resistance to permit the resulting composite paper to be used in a high-speed automatic packaging machine. In this process for producing such a paper, a tool is pressed against and passed over the metal coating while still moist to smooth out the metal coating, whereupon the metal coating is dried.Type: GrantFiled: November 18, 1986Date of Patent: March 8, 1988Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl EckartInventor: Wolfgang Noack
-
Patent number: 4404023Abstract: A process for the production of a metal or metal alloy powder with flake-shaped particles comprises mechanically crushing a ductile starting material. A foreign substance which forms a separate phase between the crystallites of the starting material is added thereto to facilitate crushing the starting material, while retaining the original workability thereof.Type: GrantFiled: March 30, 1982Date of Patent: September 13, 1983Assignee: Eckart-Werke Standard Bronzepulver-Werke Carl EckartInventor: Wolfgang Gluck
-
Patent number: 3970577Abstract: Aluminium powder is ground in an organic liquid in the presence of a hydrophillic polymer; in particular, a high molecular weight wax, to produce a paste of aluminium powder coated with the hydrophillic polymer, whereby the aluminium powder is readily dispersible in water.Type: GrantFiled: January 13, 1975Date of Patent: July 20, 1976Assignee: Messrs. Eckart-Werke Standard-Bronzepulver-Werke Carl EckartInventors: Wolfgang Gluck, Lothar Benek