Patents Assigned to Eckart GmbH
  • Patent number: 10391043
    Abstract: The invention relates to an absorbent effect pigment including a nonmetallic substrate in platelet form and a coating applied thereto, wherein the coating includes at least one spacer layer. The invention further relates to a process for production of and to the use of the absorbent effect pigment.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: August 27, 2019
    Assignee: ECKART GMBH
    Inventors: Michael Grüner, Günter Kaupp, Ralph Schneider
  • Patent number: 10208201
    Abstract: The present invention relates to a plastics composition which comprises at least one platelet-shaped metal pigment from a range of from 0.01 to 25 wt.-%, at least one light stabilizer from a range of from 0.01 to 10 wt.-% and at least one antioxidant from a range of from 0.01 to 2 wt.-%, in each case relative to the proportion by weight of the plastics composition.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: February 19, 2019
    Assignee: ECKART GMBH
    Inventors: Dietmar Mäder, Martin Schaal, Wolfgang Trenz
  • Patent number: 10125261
    Abstract: The invention relates to pearlescent pigments comprising a largely transparent platelet-shaped synthetic substrate having a density ?S and at least one optically active coating having a density ?M, the substrate having an average size d50 from a range from 2.0 ?m to 8.0 ?m and an average height hS from a range from 40 nm to 110 nm and the total lead content of the pearlescent pigments is ?10 ppm. The invention further relates to a method for producing the pearlescent pigments, and also to the use thereof.
    Type: Grant
    Filed: October 10, 2010
    Date of Patent: November 13, 2018
    Assignee: ECKART GMBH
    Inventors: Ulrich Schmidt, Michael Gruner, Dirk Schumacher, Gunter Kaupp, Barbara Mendler
  • Patent number: 10023746
    Abstract: The invention relates to a pigment which reflects IR radiation, comprising an IR-reflecting core, the IR-reflecting core being provided with a substantially enveloping coating which is transparent to IR radiation, and in that the IR-reflecting pigment is substantially white. The invention further relates to a process for producing these pigments and also to their use.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: July 17, 2018
    Assignee: ECKART GMBH
    Inventors: Frank Henglein, Christian Schramm, Ulrich Schmidt, Harald Weiss, Jasmin Bleisteiner, Michael Grüner
  • Patent number: 9957370
    Abstract: The invention relates to metallic effect pigments with coating, comprising a platelet-shaped substrate, where the coating comprises at least one hybrid inorganic/organic layer, the hybrid layer having at least partly an inorganic network that has one or more inorganic oxide components, and having at least one organic component, the organic component being at least partly an organic oligomer and/or polymer which is covalently bonded at least partly to the inorganic network via one or more organic network formers. The invention further relates to a method of producing these metallic effect pigments, and to their use.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: May 1, 2018
    Assignee: ECKART GMBH
    Inventors: Stefan Trummer, Frank Henglein, Mariel Brauer
  • Patent number: 9931524
    Abstract: A metallic effect pigment with an additive, the additive being applied on at least a portion of the metallic effect pigment. The additive comprises, as structural units, at least one carboxylic acid having at least 4 carbon atoms and also at least one polyglycol ether. The carboxylic acid and the polyglycol ether are bonded covalently to one another. The disclosure is also directed to a method for producing these metallic effect pigments, and to the use thereof, as well as to a printing ink comprising the pigments.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: April 3, 2018
    Assignee: ECKART GMBH
    Inventors: Dieter Proelss, Stefan Trummer, Stephan Roth, Bärbel Gertzen, Wolfgang Pritschins, Jürgen Omeis
  • Publication number: 20170349756
    Abstract: The invention relates to a transparent effect pigment which includes a non-metallic platelet-shaped substrate and a coating applied thereto, wherein the coating has a spacer layer. The invention further relates to a method for the production, as well as the use, of the transparent effect pigment.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 7, 2017
    Applicant: Eckart GMBH
    Inventors: Michael Grüner, Günter Kaupp, Ralph Schneider
  • Patent number: 9790368
    Abstract: The invention relates to platelet-shaped pearlescent pigments that are coated with at least one mixed inorganic/organic layer for improving their application properties, and of these, particularly their mechanical properties, and to methods for the production thereof and to the use thereof. The said mixed inorganic/organic layer comprises at least one at least partially crosslinked inorganic metal-oxide component and an organic component. The organic component is at least one organic oligomer and/or polymer, which is covalently bonded, at least in part, to the inorganic network via network formers, wherein the coating comprises at least one mixed inorganic/organic layer, which mixed mixed layer comprises, at least in part, an inorganic network having one or more inorganic oxide component(s) and at least one organic component, the organic component being, at least in part, an organic oligomer and/or polymer covalently bonded, at least in part, to the inorganic network via one or more organic network formers.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: October 17, 2017
    Assignee: ECKART GMBH
    Inventors: Frank Henglein, Stefan Trummer, Ulrich Schmidt, Günter Kaupp, Peter Krüger
  • Patent number: 9777160
    Abstract: The invention relates to copper-containing metal pigments, wherein the copper-containing metal pigments have an elemental copper content of at least 50 wt.-%, relative to the total weight of the uncoated copper-containing metal pigment, wherein the copper-containing metal pigments have at least one enveloping metal oxide layer and at least one enveloping chemically non-reactive plastic layer, wherein the sum of the amounts of the at least one chemically non-reactive plastic layer and of the at least one metal oxide layer lies in a range of from 10 to 50 wt.-%, relative to the weight of the uncoated metal pigment, and the weight ratio of the at least one metal oxide layer to the at least one chemically non-reactive plastic layer lies in a range of from 1:2 to 1:20. The invention furthermore relates to a method for producing these pigments and the use thereof.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: October 3, 2017
    Assignee: ECKART GMBH
    Inventors: Oliver Struck, Phu Qui Nguyen, Dirk Schumacher, Sebastian Hoefener
  • Patent number: 9718965
    Abstract: The present invention relates to platelet-shaped zinc-magnesium pigments, wherein the platelet-shaped zinc-magnesium pigments comprise the 40.8 to 67.8 mol % of zinc, 32.2 to 59.2 mol % of magnesium and 0 to 7 mol % of Mn, Li, Be, Y, Sn, Al, Ti, Fe, Cu and mixtures thereof, based in each case on the total molar amount of the elements Zn, Mg, Mn, Be, Y, Li, Sn, Al, Ti, Fe and Cu, where the molar percentages add up to 100 mol %, and the median thickness h50 of the pigments is less than 1 ?m. The invention further relates to the use and production of these pigments.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: August 1, 2017
    Assignee: ECKART GMBH
    Inventors: Markus Rupprecht, Christian Wolfrum, Dominik Pfammatter, Sandra Hubner, Laurent Constantin, Guy Decelles, Thomas Voit, Horst Hafner
  • Patent number: 9701845
    Abstract: The invention relates to pigments with a non-metallic substrate, wherein the pigments have at least one barrier layer that selectively absorbs light and/or electrons and at least one photocatalytically active layer, wherein the at least one barrier layer is arranged between the non-metallic substrate and the at least one photocatalytically active layer. The invention furthermore relates to a method for producing the pigments and to a coating agent.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: July 11, 2017
    Assignee: ECKART GMBH
    Inventors: Michael Grüner, Günter Kaupp
  • Patent number: 9663661
    Abstract: The present invention relates to an effect pigment comprising as a substrate a glass flake with a coating, said coating comprising at least one layer of at least one high refractive material, said material having a refractive index of at least 1.8, and/or at least one layer of at least one semitransparent metallic material, wherein said glass flakes comprising the following composition: 65-75 wt.-% silicon oxide, preferably SiO2 2-9 wt.-% aluminum oxide, preferably AI2O3 0.0-5 wt.-% calcium oxide, preferably CaO 5-12 wt.-% sodium oxide, preferably Na2O 8-15 wt.-% boron oxide, preferably B2O3 0.1-5 wt.-% titanium oxide, preferably TiO2 0.0-5 wt.-% zirconium oxide, preferably ZrO2 based on the weight of said glass flakes. The invention relates also to a method for producing the effect pigments as well as to the use of said effect pigments. The invention further relates to coating formulations based on the effect pigments.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: May 30, 2017
    Assignees: ECKART GMBH, GLASSFLAKE LIMITED
    Inventors: Günter Kaupp, Ulrich Schmidt, Dirk Schumacher, Katrin Steinbach
  • Patent number: 9631097
    Abstract: The present invention relates to weather-resistant pearlescent pigment, comprising a coated or uncoated platelet-shaped substrate which is selected from the group consisting of synthetic mica platelets, glass platelets, SiO2 platelets, Al2O3 platelets, synthetic boehmite platelets, BiOCl platelets and mixtures thereof, a chromophoric coating with at least one highly refractive metal oxide, and a top layer, wherein the top layer comprises the following layer sequence: a) a first layer made of tin oxide and/or tin hydroxide and/or hydrated tin oxide, b) a second cerium-containing layer which comprises cerium oxide and/or cerium hydroxide and/or hydrated cerium oxide, c) an organic-chemical coating applied to the cerium-containing layer which contains oligomeric silanes or consists of them, wherein the oligomeric silanes have one or more amino groups and the oligomeric silanes are chemically bonded with the cerium-containing layer.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: April 25, 2017
    Assignee: ECKART GMBH
    Inventors: Michael Grüner, Günter Kaupp, Thomas Schneider
  • Patent number: 9624378
    Abstract: The present invention concerns coated metal pigments, the production thereof, and the use thereof. The present invention also concerns coating agents containing the aforementioned metal pigments, as well as objects coated with such coating agents.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 18, 2017
    Assignee: ECKART GMBH
    Inventors: Frank Hippmann, Sebastian Hoefener, Oliver Struck, Oliver Bedford, Dirk Schumacher
  • Patent number: 9580787
    Abstract: The invention relates to the use of a particle-containing powdered coating material in a coating method selected from the group consisting of cold gas spraying, flame spraying, high-speed flame spraying, thermal plasma spraying and non-thermal plasma spraying, wherein the particles have a relative deformability factor Vm of at most 0.1 and the relative deformability factor is defined according to Formula (I): V m = d D 50 , ( I ) wherein d is the average smallest thickness of the particles, measured vertical to and in the middle half of the longitudinal axis of the particles, and D50 is the average diameter of the volume-averaged particle-size distribution. The invention furthermore relates to a method for coating.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: February 28, 2017
    Assignee: ECKART GMBH
    Inventors: Sebastian Höfener, Markus Rupprecht, Christian Wolfrum, Andreas Reis
  • Publication number: 20160304721
    Abstract: The present invention concerns coated metal pigments, the production thereof, and the use thereof. The present invention also concerns coating agents containing the aforementioned metal pigments, as well as objects coated with such coating agents.
    Type: Application
    Filed: December 11, 2014
    Publication date: October 20, 2016
    Applicant: Eckart GmbH
    Inventors: Frank Hippmann, Sebastian Hoefener, Oliver Struck, Oliver Bedford, Dirk Schumacher
  • Patent number: 9453131
    Abstract: The invention relates to metallic effect pigment, the metallic effect pigment having at least one diffractive structure and at least one layer which comprises metal nanoparticles and metal oxide phase, the metal of the metal oxide phase and the metal of the metal nanoparticles in this at least one layer being identical. The invention further relates to a process for preparing these metallic effect pigments, to a coating composition, and to a coated article.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 27, 2016
    Assignee: ECKART GMBH
    Inventors: Bernhard Geissler, Martin Fischer, Frank Henglein, Ralph Schneider, Wolfgang Herzing, Klaus Greiwe
  • Patent number: 9265701
    Abstract: A silver-colored pigment is provided having a nonmetallic platelet-shaped substrate and at least one ilmenite-containing coating, wherein the nonmetallic platelet-shaped substrate is a nonmetallic platelet-shaped synthetic substrate and the amount of iron compounds, calculated as elemental iron, in the pigment is less than 5.0 % by weight, based on the total weight of the pigment. Processes for preparing the pigment also are provided.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: February 23, 2016
    Assignee: ECKART GMBH
    Inventors: Michael Grüner, Thomas Schneider, Günter Kaupp, Christian Rummer, Dirk Schumacher
  • Patent number: 9267049
    Abstract: The invention relates to a pigment preparation with metal effect pigments, wherein the pigment preparation contains metal effect pigments the average size d50 of which lies in a range of from 1.7 to 2.8 ?m and the average thickness h50 of which lies in a range of from 15 to 50 nm, as well as at least one polycarboxylic acid. In addition, the invention relates to a method for producing this pigment preparation as well as the use of same.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 23, 2016
    Assignee: ECKART GMBH
    Inventors: Andreas Kroell, Frank Schaefer, Dieter Prölβ, Friedrich Dietz, Monika Herold
  • Patent number: 9260584
    Abstract: A coated wet-chemically oxidized aluminum effect pigment is provided having at least one metal oxide layer having at least one metal oxide which differs from aluminum oxide and an enveloping organic polymer layer, wherein the weight ratio of the metal oxide of the metal oxide layer to aluminum oxide in the wet-chemically produced aluminum oxide layer of uncoated wet-chemically oxidized aluminum effect pigment is in a range of from 1:1 to 1:40. Also, a method for the production of the pigment is provided.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: February 16, 2016
    Assignee: Eckart GmBH
    Inventors: Dirk Schumacher, Michael Gruener, Sebastian Hoefener, Oliver Struck