Abstract: The invention relates to the use of spherical metal particles, which are free of antimony and/or antimony-containing compounds, as a laser marking agent or laser weldability agent in a plastic, wherein the particle size distribution of the spherical metal particles, as determined by means of laser granulometry, in the form of the volume-averaged cumulative undersize particle size distribution, has a D99 value of <110 ?m, a D90 value of <75 ?m, and a D50<45 ?m. The invention further relates to a laser-markable and/or laser-weldable plastic which a laser marking agent consisting of spherical metal particles, which are free of antimony and/or antimony-containing compounds, wherein the particle size distribution of the spherical metal particles, as determined by means of laser granulometry, in the form of the volume-averaged cumulative undersize particle size distribution, has a D99 value of <110 ?m, a D90 value of <75 ?m, and a D50<45 ?m.
Type:
Grant
Filed:
August 18, 2007
Date of Patent:
November 27, 2012
Assignee:
Eckart GmbH
Inventors:
Marco Greb, Martin Schaal, Thomas Schuster, Walter Ziegler
Abstract: The present invention relates to a nail varnish including at least one effect pigment and at least one micronized wax, and to a process for producing it. Furthermore, the invention relates to the use of at least one micronized wax in a nail varnish and to an article provided with the nail varnish. Moreover, the invention relates to a mixture of at least one pigment and at least one micronized wax.
Type:
Application
Filed:
April 20, 2011
Publication date:
November 22, 2012
Applicant:
ECKART GMBH
Inventors:
Ulrich Schmidt, Peter Kruger, Michaela Gerstacker, Sonja Kurz, Barbara Mendler
Abstract: Aluminium effect pigments having the following properties: a) a d50-value of the volume averaged particle size distribution curve of 1 ?m to 15 ?m, b) an average thickness h50 of 15 to 150 nm determined by counting from SEM images, c) an x-ray diffractogram measured on said aluminium effect pigments in essentially plane-parallel alignment showing main peaks which are not [111]- or [222]-reflections. Furthermore, the disclosure relates to an ink jet printing ink and a method of producing an ink jet printing ink and the use of aluminium effect pigments as well as an ink jet printing ink.
Type:
Application
Filed:
July 17, 2008
Publication date:
November 1, 2012
Applicant:
ECKART GmbH
Inventors:
Dieter PRÖLSS, Stefan TRUMMER, Andreas KRÖLL
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:
Application
Filed:
October 12, 2010
Publication date:
August 30, 2012
Applicant:
Eckart GmbH
Inventors:
Ulrich Schmidt, Michael Gruner, Dirk Schumacher, Gunter Kaupp, Barbara Mendler
Abstract: The invention relates to a pearlescent pigment comprising a metal oxide-containing, platelet-shaped substrate and having a first and a second protective layer, wherein the metal oxide has a refractive index greater than 1.
Abstract: Platelet-shaped, copper-containing, metallic effect pigments which have a copper content of 60% to 100% by weight, based on the total metal content, the metal pigments having a thickness distribution as determined via thickness counting by scanning electron microscopy (SEM) and represented as cumulative undersize distribution, a) with an h50 of 10 to 50 nm, and b) with an h90 of 20 to 70 nm, the platelet-shaped, copper-containing, metallic effect pigments being produced by milling a copper-containing metal powder with lubricant. The disclosure further relates to a process for producing these pigments, and also to their use, to a printing ink comprising the pigments of the invention, and to a coated article comprising these pigments.
Type:
Grant
Filed:
May 28, 2009
Date of Patent:
April 24, 2012
Assignee:
Eckart GmbH
Inventors:
Dieter Proelss, Ralf Deinzer, Wolfgang Herzing, Andreas Kroell, Stefan Trummer, Michael Becker, Katrin Wczasek
Abstract: A mixture of platelet-shaped, copper-containing metallic effect pigments having a copper content of 60% to 100% by weight, based on the total metal content, with at least one further component, where the copper-containing metallic effect pigments have a thickness distribution, determined via thickness counting by scanning electron microscopy (SEM) and represented as cumulative undersize distribution, a) with an h50 of 10 to 100 nm, and b) with an h90 of 20 to 150 nm, and in that the at least one further component is a cellulose derivative selected from the group consisting of alkylcellulose, hydroxyalkylcellulose, alkyl(hydroxyalkyl)cellulose, and mixtures thereof, and/or is at least one additive having antioxidative and/or radical-inhibiting properties. The disclosure further relates to a method for producing this mixture, and to a coating composition.
Type:
Grant
Filed:
May 28, 2009
Date of Patent:
April 17, 2012
Assignee:
Eckart GmbH
Inventors:
Katrin Wczasek, Michael Becker, Svea Heitmar, Dieter Proelss
Abstract: Effect pigments with a platelet-shaped substrate provided on at least one side with at least one coating of semitransparent metal and/or at least one high-index coating having a refractive index ?2.0. The platelet-shaped substrate includes at least one mixed inorganic/organic phase. Also, a method of producing effect pigments including the following steps: a) combining at least one organic network former, at least one reactive organic component, at least one inorganic network former and/or nanoscale inorganic particles and a liquid phase to form a reaction composition, b) applying the reaction composition to a sheetlike base, c) forming a solidified mixed inorganic/organic phase, d) converting the mixed inorganic/organic phase into platelet-shaped substrates, and e) coating the platelet-shaped substrates with at least one coating of semitransparent metal and/or at least one high-index coating having a refractive index ?2.0.
Type:
Grant
Filed:
June 16, 2008
Date of Patent:
March 6, 2012
Assignee:
Eckart GmbH
Inventors:
Günter Kaupp, Ulrich Schmidt, Dirk Schumacher
Abstract: The invention relates to a platelike color effect pigment having the following structure: a) a metallic reflective core; b) a spacer layer made of a dielectric material, and; c) an, all in all, semitransparent absorber layer comprising, in essence, discrete metal particles that have an average diameter of 1 to 100 nm and optionally at least one other protective layer.
Type:
Grant
Filed:
October 18, 2006
Date of Patent:
November 29, 2011
Assignee:
Eckart GmbH
Inventors:
Ralph Domnick, Georg Bauer, Christian Wolfrum, Hans-Jorg Kremitzl, Thomas Klaumunzer, Thomas Schuster
Abstract: The invention relates to a dry toner, containing a platelet-type metal effect pigment or a plurality of platelet-type metal effect pigments and at least one resinous constituent, wherein the metal effect pigment or the metal effect pigments is/are additionally provided with a coating preferably suitable for improving the mechanical stability, and that this coating is additionally modified with at least one organic layer, which organic layer is selected from the group consisting of organofunctional silanes, organofunctional titanates, organofunctional zirconates, phosphonic acids, and phosphonates. The invention further relates to processes for the production of the dry toner and to the use thereof. Furthermore, the invention relates to a toner cartridge and to printed products.
Abstract: Effect pigments with a platelet-shaped substrate provided on at least one side with at least one coating of semitransparent metal and/or at least one high-index coating having a refractive index?2.0. The platelet-shaped substrate includes at least one mixed inorganic/organic phase. Also, a method of producing effect pigments including the following steps: a) combining at least one organic network former, at least one reactive organic component, at least one inorganic network former and/or nanoscale inorganic particles and a liquid phase to form a reaction composition, b) applying the reaction composition to a sheetlike base, c) forming a solidified mixed inorganic/organic phase, d) converting the mixed inorganic/organic phase into platelet-shaped substrates, and e) coating the platelet-shaped substrates with at least one coating of semitransparent metal and/or at least one high-index coating having a refractive index?2.0.
Type:
Application
Filed:
June 16, 2008
Publication date:
November 25, 2010
Applicant:
ECKART GMBH
Inventors:
Günter Kaupp, Ulrich Schmidt, Dirk Schumacher
Abstract: The invention relates to effect pigments having an aluminum core or aluminum alloy core and an aluminum oxide-containing or aluminum oxide/hydroxide-containing layer enveloping said aluminum core or aluminum alloy core, obtained by chemical wet-process oxidation of lamellar aluminum pigments or aluminum alloy pigments, the content of metallic aluminum in the aluminum core or aluminum alloy core being not more than 90% by weight, based on the total weight of the pigment, wherein the oxidized aluminum pigments or aluminum alloy pigments exhibit at least one highly refractive metal chalcogenide layer having a refractive index of >1.95, and a mixed layer is formed between the highly refractive metal chalcogenide layer and the enveloping aluminum oxide-containing or aluminum oxide/hydroxide-containing layer. The invention further relates to a process for the production of such effect pigments and to the use thereof.
Type:
Grant
Filed:
November 19, 2004
Date of Patent:
November 9, 2010
Assignee:
Eckart GmbH & Co. KG
Inventors:
Frank Henglein, Hermann Birner, Michael Grüner
Abstract: The invention relates to surface-modified pearlescent pigments, the pearlescent pigments being provided on the surface with at least one organic phosphorus compound of the general formula (I) R1R2P(O)(OR3)??(I) and/or of the general formula (II) R1P(O)(OR3)(OR4)??(II) where R1 and R2 independently of one another are hydrogen or an organic radical having 1 to 30 carbon atoms, with the proviso that R1 and R2 are not simultaneously hydrogen, R3 and R4 independently of one another are H or alkyl having 1-10 carbon atoms. The invention further relates to a process for preparing these pearlescent pigments and also to their use.
Abstract: The invention relates to electrocoat material pigments, said electrocoat material pigments comprising metal effect pigment platelets coated with at least one coating material, said coating material comprising one or more functional groups for adhesion or attachment to the pigment surface and at least one amino-functional group, said amino-functional group being protonatable or positively charged. The invention further relates to a process for producing these electrocoat material pigments and to the use thereof, and to a cathodic electrocoat material which comprises the inventive pigments.
Type:
Application
Filed:
October 27, 2007
Publication date:
July 1, 2010
Applicant:
Eckart GMBH
Inventors:
Harald Weiss, Christian Schramm, Carolin Heckel
Abstract: The invention relates to pearlescent pigments comprising platelet-shaped substrate, comprising metal oxide, and protective layer, said metal oxide having a refractive index of more than 1.8, where the protective layer is composed of an organic chemically surface modified SiO2 layer, the organic chemical surface modification being applied on the SiO2 layer. The invention further relates to a process for preparing these pearlescent pigments and to their use.
Abstract: In a metal pigment for a cosmetic preparation, such as lipstick, nail polish, eye shadow, hair colorant, liquid mascara, powder, eyeliner, rouge, skin/hair care products, perfume, eau de toilette, lotions or the like, provision is made for a metallic substrate to have a substrate-enclosing layer produced by the sol-gel process, which provides a barrier effect against sweat and saliva and prevents direct contact between skin and metallic substrate.
Type:
Grant
Filed:
August 7, 2003
Date of Patent:
January 26, 2010
Assignee:
Eckart GmbH & Co. KG
Inventors:
Gunter Kaupp, Thomas Schuster, Hans-Jorg Kremitzl, Gunter Sommer
Abstract: The invention relates to a cosmetic preparation containing a metallic effect pigment which consists of a metal substrate having a layer enclosing the substrate. Said layer is produced in a sol/gel method, has a barrier effect against sweat and saliva and prevents a direct contact between skin and metallic substrate, the metallic pigment being hydrophilic. The inventive preparation can be in the form of a cream, a lotion, an eye shadow, a nail varnish, a lipstick, a mascara, a gel, a make-up formulation or a self-tanning cream or lotion.
Abstract: The present invention relates to highly lustrous gold-colored metal effect pigments comprising a copper-based alloy and additional metallic alloy components, preferably zinc, and which are produced by means of stripping and comminuting metal films deposited in vacuo.
Type:
Grant
Filed:
August 7, 2003
Date of Patent:
February 3, 2009
Assignee:
Eckart GmbH
Inventors:
Thomas Schuster, Wolfgang Herzing, Rolf Treude, Stanley Cichanowski