Mica Containing Patents (Class 106/417)
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Publication number: 20140335348Abstract: A bright pigment of the present invention is a bright pigment including flaky particles and a metal oxide layer covering each surface of the flaky particles. The bright pigment has a particle diameter corresponding to a 90% volume-cumulative particle diameter from a small particle diameter side, in a particle size distribution, of 55 ?m or less. The flaky particles are formed of a material having a refractive index of 1.4 to 1.8. The flaky particles have an average thickness of 0.35 to 0.55 ?m and substantially do not contain flaky particles having a thickness of 0.15 ?m or less.Type: ApplicationFiled: December 7, 2012Publication date: November 13, 2014Inventor: Takeaki Kitamura
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Patent number: 8876965Abstract: A composite comprising a silicate material, such as, a sodium aluminosilicate, and titanium dioxide disposed on the surface thereof is disclosed, together with formulations comprising the composite and methods for preparing the same.Type: GrantFiled: March 11, 2013Date of Patent: November 4, 2014Assignee: J.M. Huber CorporationInventors: Hilary Ellen Matthews, Ronald Louis Romer
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Publication number: 20140290536Abstract: The process relates to mineral material slurries used in concrete, sealants, paper, paint or plastic applications, wherein the surface of the wet mineral matter slurry displays an increased whitening.Type: ApplicationFiled: December 22, 2011Publication date: October 2, 2014Inventors: Matthias Buri, Samuel Rentsch, Claudia Pudack
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Publication number: 20140261084Abstract: A pigment is disclosed wherein the pigment includes a platy substrate or uniform platy substrate coated with an odd number of layers of alternating layers of high or low refractive index material, wherein each layer has a refractive index that differs from adjacent layers by at least 0.2; and the pigment has from about 40 to about 100% reflectance of light having a wavelength of 280 nm to 400 nm. Processes for making and using the pigments are also disclosed. These pigments can find application in paints, plastics, cosmetics, glass, printing inks, and glazes.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Inventors: Steven Jones, Markus Rueckel, Thomas Servay, Stefan Dahmen, Geoffrey Johnson
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Publication number: 20140251184Abstract: This invention relates to synthetically derived zinc phlogopite platelets, of superior aspect ratio, effect pigments comprising such synthetically derived platelets and methods of forming said platelets. More specifically the disclosure describes an improved hydrothermal synthesis of zinc phlogopite suitable as a platelets for interference pigments, barrier and flame retardant applications.Type: ApplicationFiled: March 11, 2014Publication date: September 11, 2014Inventors: Meaghan Clark McGuire, Ivor Bull, Geoffrey Mark Johnson, Enzo Cordola
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Publication number: 20140255459Abstract: The subject matter of the invention is a method of surface modification of a pigment or of a composite pigment comprising at least a metal oxide, a metal complex or a derivative thereof, and the use of these pigments or composite pigments thus obtained for cosmetics, paint or inks.Type: ApplicationFiled: October 5, 2012Publication date: September 11, 2014Inventors: Franck Martin, Johanne Moineau, Aude Mezy, Guillaume Gracy
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Publication number: 20140255328Abstract: This invention relates to a synthetically derived zinc phlogopite platelets, of superior platelet diameter, effect pigments comprising such synthetically derived platelets and methods of forming said substrates. More specifically the disclosure describes an improved hydrothermal synthesis of zinc phlogopite suitable as a platelets for interference pigments, barrier and flame retardant applications.Type: ApplicationFiled: March 11, 2014Publication date: September 11, 2014Inventors: Meaghan Clark McGuire, Ivor Bull, Geoffrey Mark Johnson
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Patent number: 8808447Abstract: The present invention relates to a pigment paint for an exterior material and to a method for manufacturing the same. The pigment paint comprises: a flake matrix, a first metal oxide layer coated on the upper portion of the transparent matrix, an oxide layer containing MgO—SiO2 coated on the upper portion of the first metal oxide layer, and a second metal oxide layer coated on the upper portion of the oxide layer. In order to ensure humidity resistance and weather resistance required for a lustrous pigment paint for exterior materials, a cerium layer and an aluminum oxide layer are further coated. Properties such as high luminance, high chromaticity, and high gloss, which could not be achieved using conventional techniques, can be achieved and a pigment paint having a multi-colored pearl luster can be provided.Type: GrantFiled: March 8, 2012Date of Patent: August 19, 2014Assignee: CQV Co., Ltd.Inventors: Jae-Il Jeong, Nam-Il Lee, Sang-Keun Park, Jin-Hyung Lee, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
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Patent number: 8728226Abstract: Multilayer pearlescent pigments comprising platelet-shaped transparent substrates provided with an optically active coating, where the optically active coating includes at least a) an absorbing high-index layer A having a refractive index n?1.8 b) a low-index layer B having a refractive index n<1.8 c) a high-index layer C having a refractive index n?1.8 and also d) optionally at least one outer protective layer D and where the multilayer pearlescent pigments have a cumulative frequency distribution of a volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D in a range from 0.7-1.4, the span ?D being calculated in accordance with formula (I) ?D=(D90?D10)/D50??(I). The disclosure further relates to a method for producing these multilayer pearlescent pigments, and also to their use.Type: GrantFiled: August 9, 2010Date of Patent: May 20, 2014Assignee: Eckart GmbHInventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Patent number: 8728227Abstract: Multilayer pearlescent pigments with a silver interference color, based on platelet-shaped transparent substrates with an optically active coating, where the optically active coating includes at least a) a high-index layer A having a refractive index n ?1.8 b) a low-index layer B having a refractive index n <1.8 c) a high-index layer C having a refractive index n ?1.8 and also d) optionally an outer protective layer D. The multilayer pearlescent pigments have the indices D10, D50, D90 from the cumulative frequency distribution of the volume-averaged size distribution function, with a span ?D of 0.7 -1.4, the span ?D being calculated in accordance with the formula ?D =(D90 - D10)/D50. The invention further relates to a method for producing these multilayer pearlescent pigments, and also to their use.Type: GrantFiled: August 9, 2010Date of Patent: May 20, 2014Assignee: Eckart GmbHInventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Patent number: 8728228Abstract: Multilayer pearlescent pigments based on platelet-shaped transparent substrates with an optically active coating, where the optically active coating includes at least a) a nonabsorbing high-index layer A having a refractive index n?1.8, b) a low-index layer B having a refractive index n<1.8 having an optical layer thickness >150 nm, c) an absorbing high-index layer C having a refractive index n?1.8 and also, d) optionally an outer protective layer D, wherein the multilayer pearlescent pigments have a cumulative frequency distribution of the volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D of 0.7-1.4, the span ?D being calculated in accordance with the formula ?D=(D90?D10)/D50. The disclosure further relates to a method for producing these multilayer pigments, and to their use.Type: GrantFiled: August 9, 2010Date of Patent: May 20, 2014Assignee: Eckart GmbHInventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Patent number: 8715407Abstract: Multilayer pearlescent pigments comprising platelet-shaped transparent substrates provided with an optically active coating, where the coating includes at least (a) a nonabsorbing high-index layer A having a refractive index n?1.8, (b) a low-index layer B having a refractive index n<1.8, (c) a nonabsorbing high-index layer C having a refractive index n?1.8 and also (d) optionally at least one outer protective layer D where the pigments have a cumulative frequency distribution of a volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D in a range from 0.7-1.4, the span ?D being calculated in accordance with formula (I) ?D=(D90?D10)/D50??(I). The disclosure further relates to a method for producing these multilayer pearlescent pigments, and also to their use.Type: GrantFiled: August 9, 2010Date of Patent: May 6, 2014Assignee: Eckart GmbHInventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Publication number: 20140102332Abstract: Disclosed are a functional reinforcing filler including inorganic particles surface-modified with an alkenylsilanol obtained by hydrolyzing an alkenylalkoxysilane compound, and a method for preparing the same. Since the disclosed functional reinforcing filler has a functional group having a double bond, it has good reactivity for styrene-butadiene rubber and sulfur. Thus, when used as a functional reinforcing filler in the manufacture of rubber, it allows improvement of physical properties through adjustment of the addition amount of sulfur without additional use of the coupling agent. In addition, because of superior hydrolysis reactivity, the problem of alcohol can be solved and a rubber mixture with long scorch time can be prepared. In particular, when the functional reinforcing filler of the present invention is used in the manufacture of tires, improvement in modulus, tensile strength, rotational resistance and wet traction performance can be expected.Type: ApplicationFiled: September 18, 2013Publication date: April 17, 2014Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Bok Ryul YOO, Joon Soo HAN, Dong Euy JUNG
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Patent number: 8647429Abstract: The present invention relates to effect pigments based on uncoated or coated flake-form substrates having an outer coating comprising a) TiO2 and b) Al2O3, MgO and/or CaO and c) SiO2 and d) ZnO and/or e) at least one mixed oxide of the elements mentioned under a) to d), and to the use thereof, inter alia in paints, coatings, printing inks, plastics and cosmetic formulations.Type: GrantFiled: February 2, 2011Date of Patent: February 11, 2014Assignee: Merck Patent GmbHInventors: Sabine Melson, Volker Wilhelm, Ulrich Schoenefeld
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Publication number: 20140018439Abstract: The present invention relates to a weather-resistant pearlescent pigment which consists of a platelet-shaped substrate coated with one or more highly refractive metal oxides, the platelet-shaped substrate being selected from the group consisting of synthetic mica flakes, glass flakes, SiO2 flakes, Al2O3 flakes, synthetic boehmite flakes, BiOCl flakes and mixtures thereof, and a top layer, wherein the top layer consists of the following layers: a) a cerium-containing layer, selected from the group consisting of cerium oxide, cerium hydroxide, hydrated cerium oxide, and mixtures thereof, the cerium-containing layer being applied directly to the highly refractive metal oxide layer, and b) an organic-chemical compatibilizing layer, which comprises the reaction products of oligomeric silanes, wherein the oligomeric silanes have one or more amino groups, the organic-chemical compatibilizing layer being applied directly to the cerium-containing layer a).Type: ApplicationFiled: March 28, 2012Publication date: January 16, 2014Applicant: ECKART GMBHInventors: Michael Gruner, Thomas Schneider, Gunter Kaupp
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Patent number: 8613800Abstract: The present invention relates to pigment preparations comprising one or more effect pigments in platelet form, at least one antioxidant and a wax or wax mixture, and to the use thereof for pigmentation of application media, especially paints, coating materials, powder coating materials, polymers, and for production of masterbatches.Type: GrantFiled: April 9, 2009Date of Patent: December 24, 2013Assignee: Merck Patent GmbHInventors: Volker Wilhelm, Hans Jurgen Brehm
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Publication number: 20130164356Abstract: The present invention relates to effect pigments which are based on flake-form substrates having a circular form factor of 1.2-2 and are coated with at least one high-refractive-index layer, and to the use thereof, inter alia in paints, coatings, printing inks, plastics and in cosmetic formulations.Type: ApplicationFiled: December 20, 2012Publication date: June 27, 2013Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventor: Merck Patent Gesellschaft Mit Beschrankter Haftung
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Publication number: 20130149363Abstract: The present invention relates to five-layered pigments based on multicoated platelet-shaped substrates which comprise a layer sequence comprising (A) a layer of SnO2 having a layer thickness of 0.1-50 nm, (B) a high-refractive-index coating consisting of TiO2 in the rutile modification having a layer thickness of 10-800 nm, (C) a colorless coating having a refractive index n?1.8 having a layer thickness of 20-800 nm, (D) a high-refractive-index coating consisting of SnO2 having a layer thickness of 0.1-50 nm, (E) a layer of TiO2 in the rutile modification having a layer thickness of 10-800 nm, and optionally (F) an outer protective layer, and to the use thereof in paints, coatings, powder coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, as dopants for the laser marking of papers and plastics, in cosmetic formulations and for the preparation of pigment preparations and dry preparations.Type: ApplicationFiled: February 8, 2013Publication date: June 13, 2013Applicant: MERCK PATENT GMBHInventor: MERCK PATENT GMBH
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Publication number: 20130118380Abstract: A system of N?3 interference pigments, which is distinguished in that it exhibits a maximum color gamut through specification of the optimum pigment hue angle hu?v?i (i=1 to N) in the CIELUV system.Type: ApplicationFiled: August 9, 2012Publication date: May 16, 2013Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Michael ROESLER, Adalbert HUBER
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Patent number: 8337611Abstract: Disclosed are yellowing-stable, silver-white effect pigments having high whiteness based on synthetic mica flakes and to the use thereof in paints, lacquers, printing inks, plastics, button pastes, ceramic materials, glasses, for coloring seed, as dopant in laser markings of plastics and papers, as additive for laser welding of plastics, as additive for coloring in the foods and pharmaceuticals sectors and in cosmetic formulations, and for the preparation of pigment compositions and dry preparations.Type: GrantFiled: February 17, 2010Date of Patent: December 25, 2012Assignee: Merck Patent GmbHInventors: Gerhard Pfaff, Johann Dietz, Sabine Schoen, Doreen Warthe
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Publication number: 20120282311Abstract: The present invention relates to pigments with improved and adjustable sparkling effect comprising A) a plate-like substrate of perlite coated with (a) dielectric material, and/or metal; and B) a plate-like substrate of mica, coated with (a) dielectric material, and/or a metal; and a process for their production and their use in paints, ink jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass. The pigments show an improved sparkle effect; in particular an attractive high sparkle intensity.Type: ApplicationFiled: October 18, 2010Publication date: November 8, 2012Applicant: BASF SEInventors: Raimund Schmid, Norbert Mronga, Patrice Bujard, Steven Jones, Paul Cao
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Patent number: 8303864Abstract: Flame-retardant plastics mouldings composed of polyphenyl sulphones (PPSUs) or of polycarbonates (PCs) are coloured with Iridoin® pigments in such a way as to have a metallic effect. The effect is resistant to the usual stresses present in an aircraft cabin and complies with the respective fire-protection requirements.Type: GrantFiled: June 16, 2005Date of Patent: November 6, 2012Assignee: Evonik Rohm GmbHInventor: Detlef Bumann
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Patent number: 8273171Abstract: A pearlescent pigment (100) includes: a flaky substrate (10); a titanium dioxide layer (20) that is formed on the flaky substrate (10); and an oxazoline compound layer (40) that is formed on the titanium dioxide layer (20) with the titanium dioxide layer (20) being interposed between the flaky substrate (10) and the oxazoline compound layer (40), and serves as a top surface of the pearlescent pigment (100).Type: GrantFiled: August 29, 2007Date of Patent: September 25, 2012Assignee: Nippon Sheet Glass Company, LimitedInventors: Takeaki Kitamura, Juichi Ino
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Publication number: 20120227627Abstract: The present invention relates to a nacreous pigment and a method of preparing the same. The nacreous pigment includes a flake substrate, a first metal oxide layer coated on the substrate, and an oxide layer coated on the first metal oxide layer and containing MgO.SiO2, and a second metal oxide layer coated on the oxide layer. The pigment exhibits high brightness, high chroma, high gloss, and multi-color effects.Type: ApplicationFiled: June 22, 2011Publication date: September 13, 2012Applicant: CQV CO., LTD.Inventors: Jae-Il JEONG, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil -Wan CHANG
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Publication number: 20120219607Abstract: 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: ApplicationFiled: October 12, 2010Publication date: August 30, 2012Applicant: Eckart GmbHInventors: Ulrich Schmidt, Michael Gruner, Dirk Schumacher, Gunter Kaupp, Barbara Mendler
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Patent number: 8197591Abstract: 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.Type: GrantFiled: February 23, 2007Date of Patent: June 12, 2012Assignee: Eckart GmbHInventors: Günter Kaupp, Ulrich Schmidt
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Publication number: 20120136093Abstract: A two step method for preparing a filler composition, the filler composition useful to prepare a nanocomposite polymer and an epoxy nanocomposite coating. First, disperse a water dispersible filler material in a liquid comprising water, but without any added intercalation agent, to form a dispersion. Second, replace at least a portion of the water of the liquid with an organic solvent so that the water concentration of the liquid is less than six percent by weight to form the filler composition, the average size of at least one dimension of the filler material being less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step. A nanocomposite polymer can be prepared by mixing the filler composition with one or more polymer, polymer component, monomer or prepolymer to produce a polymer containing the filler composition.Type: ApplicationFiled: January 16, 2012Publication date: May 31, 2012Applicants: THE TEXAS A & M UNIVERSITY, DOW GLOBAL TECHNOLOGIES LLCInventors: Luyi Sun, Woong Jae Boo, Hung-Jue Sue, Maurice J. Marks, Richard F. Fibiger, Michael S. Paquette
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Patent number: 8187589Abstract: The present invention relates to a process for stabilizing aqueous preparations of minerals by adding reuterin to the aqueous preparations, to the use of reuterin for the stabilization of such aqueous mineral preparations, and the aqueous mineral preparations containing reuterin.Type: GrantFiled: August 19, 2009Date of Patent: May 29, 2012Assignee: Omya Development AGInventors: Patrick Schwarzentruber, Nicola Di Maiuta
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Patent number: 8153163Abstract: The present invention relates to a pearl pigment obtained by coating the surface of a flaky powder with a colored metal or a colored metal oxide and further coating the surface of the above colored metal- or colored metal oxide-coated flaky powder with a colorless metal or a colorless metal oxide, wherein when the pearl pigment is applied onto the surface of black artificial leather in an average amount of 0.05 mg/cm2 and the intensity of light reflected from the pearl pigment is measured using illuminant C at a 2° viewing angle with a spectrophotometric colorimeter which is provided with a sheet polarizer S on the light incident side and a sheet polarizer P on the light receiving side, the powder reflection light which is incident to the pearl pigment as a measurement sample at an angle of 45° to the direction normal to the surface of the sample and is received in the direction normal to the surface of the sample has absolute values a* and b* of 10 or less, and make-up cosmetics containing the pearl pigment.Type: GrantFiled: June 28, 2011Date of Patent: April 10, 2012Assignees: Kao Corporation, Nihon Koken Kogyo KKInventors: Eiichiro Misaki, Hiroyuki Shiomi, Maoya Adachi, Takahiro Kaida
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Publication number: 20120073473Abstract: The invention concerns a new synthetic mineral matter containing carbonate, the decomposition of which reduces the rate of fossil fuel carbon dioxide emission. It also concerns its manufacture in batches, or in a batch-continuous manner, or in a continuous manner, together with its uses in the pharmaceutical field, the field of human or animal foodstuffs, or again the papermaking field with, notably, manufacture of paper, filler or coating, or again every other paper surface treatment, together with the fields of water-based or non-water-based paints, together with the field of plastics, such as that of breathable polyethylene films, or again the field of printing inks.Type: ApplicationFiled: September 28, 2011Publication date: March 29, 2012Inventors: Matthias Buri, Thoralf Gliese
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Patent number: 8114252Abstract: A composition for treating paper products comprising protein particulate, colloidal pigment, synthetic latex polymer, and preservative is described, as well as methods and an apparatus using the composition for such treatments, and products obtained thereby. The treated paper products preferably have improved strength, water holdout, and/or ink holdout, amongst other advantages and benefits.Type: GrantFiled: July 10, 2008Date of Patent: February 14, 2012Assignee: Buckman Laboratories International, Inc.Inventor: Gerald M. Dykstra
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Publication number: 20120034178Abstract: The present invention relates to novel pigment mixtures comprising at least two different particulate components A and B. The first component A comprises titanium suboxide(s), a titanium oxynitride or a titanium nitride species. Component B particle comprises inorganic, or organic pigments. The titanium suboxide particles display a bluish metallic luster, are new and form a further aspect of the present invention. When combined with particles from component B such as variously coated micas, for example, the bluish or bluish/black metallic color effect from component A leads to special color effects in the various mixtures.Type: ApplicationFiled: October 21, 2011Publication date: February 9, 2012Inventors: Patrice Bujard, Philippe Bugnon, Marc Mamak, Urs Leo Stadler
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Publication number: 20110318570Abstract: A paint composition producing paint films which change from an achromatic color to a chromatic color when the angle of incidence of the light with respect to the normal to the paint film plane is changed. The paint composition comprises (A) glitter material which has an angle-dependent interference effect and (B)metal oxide coated mica and/or metal oxide coated alumina flakes in proportions where the content ratio ((A)/(B)) of the (A) component with respect to the (B) component, as the solid fraction mass ratio, is from 2.5/1 to 1/6 and in which the interference color of the (A) component and the interference color of the (B) component at a face angle of the paint film have a complementary color relationship.Type: ApplicationFiled: January 28, 2010Publication date: December 29, 2011Applicant: BASF COATINGS JAPAN LTD.Inventors: Haruko Ryuzaki, Kaori Notoya, Shigeo Misawa
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Patent number: 8083846Abstract: A color effect material is described as composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a highly reflective layer which acts as a reflector to light directed thereon and a spacer pigment layer which is selectively transparent to light directed thereon.Type: GrantFiled: August 18, 2004Date of Patent: December 27, 2011Assignee: BASF CorporationInventors: Curtis J. Zimmermann, James D. Christie, Vivian K. Doxey, Daniel Stevenson Fuller
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Publication number: 20110301273Abstract: Pigment granules including a support material which is coated with one or more flake-form effect pigments by means of an adhesion promoter. The effect pigments may be, for example, pearlescent pigments, interference pigments, metal-effect pigments, multilayered pigments having one or more transparent, semi-transparent or opaque layers, goniochromatic pigments, holographic pigments, coated BiOCL flakes, uncoated BiOCl flakes, and LCP pigments, and mixtures thereof. A process for the production of pigment granules includes mixing one or more flake-form effect pigments, a support material, at least one adhesion promoter, and optionally one or more additives simultaneously or successively with one another. The pigment granules may be used for the pigmenting of application media, in particular paints, plasters, coatings, powder coatings, plastics, and in particular as scatter and effect granules, for example for the decoration of wallcoverings.Type: ApplicationFiled: December 18, 2009Publication date: December 8, 2011Applicant: Merck Patent GmbHInventors: Thomas Rathschlag, Carsten Griessmann
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Patent number: 8066811Abstract: The invention disclosed a pigment having angle dependence of the interference colors and its production process, in which mica is used as the substrate and the first metal oxide coating with high refractive index has the optical thickness of silver to golden interference color. And the second metal oxide coating with low refractive index has the optical thickness of the second circle green to the fourth circle interference color. The third coating is a highly refractive metal oxide. The lowly refractive metal oxide is SiO2 and the highly refractive metal oxide is TiO2, SnO2, Fe2O3, Fe3O4, CoO, Co2O3, ZrO2, Cr2O3 or their mixtures as well as complexes. The mica substrate is wet-milled mica powders with a thickness of 0.1-0.9 micrometers and a diameter of 5-250 micrometers.Type: GrantFiled: April 18, 2005Date of Patent: November 29, 2011Inventors: Jiansheng Fu, Yiting Peng, Xiaohui Tian
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Publication number: 20110265689Abstract: Multilayer pearlescent pigments comprising platelet-shaped transparent substrates provided with an optically active coating, where the optically active coating includes at least a) an absorbing high-index layer A having a refractive index n?1.8 b) a low-index layer B having a refractive index n<1.8 c) a high-index layer C having a refractive index n?1.8 and also d) optionally at least one outer protective layer D and where the multilayer pearlescent pigments have a cumulative frequency distribution of a volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D in a range from 0.7-1.4, the span ?D being calculated in accordance with formula (I) ?D=(D90?D10)/D50??(I). The disclosure further relates to a method for producing these multilayer pearlescent pigments, and also to their use.Type: ApplicationFiled: August 9, 2010Publication date: November 3, 2011Inventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Publication number: 20110265690Abstract: Multilayer pearlescent pigments based on platelet-shaped transparent substrates with an optically active coating, where the optically active coating includes at least a) a nonabsorbing high-index layer A having a refractive index n?1.8, b) a low-index layer B having a refractive index n<1.8 having an optical layer thickness >150 nm, c) an absorbing high-index layer C having a refractive index n?1.8 and also, d) optionally an outer protective layer D, wherein the multilayer pearlescent pigments have a cumulative frequency distribution of the volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D of 0.7-1.4, the span ?D being calculated in accordance with the formula ?D=(D90?D10)/D50. The disclosure further relates to a method for producing these multilayer pigments, and to their use.Type: ApplicationFiled: August 9, 2010Publication date: November 3, 2011Inventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Publication number: 20110259243Abstract: Multilayer pearlescent pigments comprising platelet-shaped transparent substrates provided with an optically active coating, where the coating includes at least (a) a nonabsorbing high-index layer A having a refractive index n?1.8, (b) a low-index layer B having a refractive index n<1.8, (c) a nonabsorbing high-index layer C having a refractive index n?1.8 and also (d) optionally at least one outer protective layer D where the pigments have a cumulative frequency distribution of a volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D in a range from 0.7-1.4, the span ?D being calculated in accordance with formula (I) ?D=(D90?D10)/D50??(I). The disclosure further relates to a method for producing these multilayer pearlescent pigments, and also to their use.Type: ApplicationFiled: August 9, 2010Publication date: October 27, 2011Inventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Publication number: 20110237683Abstract: The present invention relates to pigment compositions with improved and adjustable sparkling effect comprising A) a platelet-like perlite; and B) an effect pigment; and a process for their production and their use in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass. The pigment compositions show an improved sparkle effect; in particular an attractive high sparkle intensity.Type: ApplicationFiled: February 1, 2011Publication date: September 29, 2011Applicant: BASF SEInventors: Raimund Schmid, Carolyn Lavallee, Steven A. Jones, James Carroll
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Publication number: 20110226161Abstract: Multilayer pearlescent pigments with a silver interference color, based on platelet-shaped transparent substrates with an optically active coating, where the optically active coating includes at least a) a high-index layer A having a refractive index n?1.8 b) a low-index layer B having a refractive index n<1.8 c) a high-index layer C having a refractive index n?1.8 and also d) optionally an outer protective layer D. The multilayer pearlescent pigments have the indices D10, D50, D90 from the cumulative frequency distribution of the volume-averaged size distribution function, with a span ?D of 0.7-1.4, the span ?D being calculated in accordance with the formula ?D=(D90?D10)/D50. The invention further relates to a method for producing these multilayer pearlescent pigments, and also to their use.Type: ApplicationFiled: August 9, 2010Publication date: September 22, 2011Inventors: Dirk Schumacher, Michael Grüner, Günter Kaupp
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Publication number: 20110223218Abstract: A combination pigment having a mica and/or metal oxide-coated mica substrate, an absorption colorant coating, and a waxy film bonding the absorption colorant coating to the substrate.Type: ApplicationFiled: March 9, 2010Publication date: September 15, 2011Inventors: Steven Alan Jones, Gabriel E. Uzunian, Betty F. Aucar
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Patent number: 8016934Abstract: The present invention relates to a pearl pigment obtained by coating the surface of a flaky powder with a colored metal or a colored metal oxide and further coating the surface of the above colored metal- or colored metal oxide-coated flaky powder with a colorless metal or a colorless metal oxide, wherein when the pearl pigment is applied onto the surface of black artificial leather in an average amount of 0.05 mg/cm2 and the intensity of light reflected from the pearl pigment is measured using illuminant C at a 2° viewing angle with a spectrophotometric colorimeter which is provided with a sheet polarizer S on the light incident side and a sheet polarizer P on the light receiving side, the powder reflection light which is incident to the pearl pigment as a measurement sample at an angle of 45° to the direction normal to the surface of the sample and is received in the direction normal to the surface of the sample has absolute values a* and b* of 10 or less, and make-up cosmetics containing the pearl pigment.Type: GrantFiled: December 15, 2005Date of Patent: September 13, 2011Assignees: Kao Corporation, Nihon Koken Kogyo KKInventors: Eiichiro Misaki, Hiroyuki Shiomi, Maoya Adachi, Takahiro Kaida
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Publication number: 20110203485Abstract: Methods for treating lignocellulosic material or pigment with a reductive bleaching solution generally include washing the lignocellulosic material or pigment with a reducing agent of magnesium dithionite. The method includes at least one reductive stage and at least one peroxide stage. Also disclosed are methods for preparing dithionite solution wherein magnesium bisulfite is reduced with borohydride solution to obtain dithionite. Bleached lignocellulosic material or pigment obtained with the treatment methods are also disclosed.Type: ApplicationFiled: October 30, 2009Publication date: August 25, 2011Applicant: KEMIRA OYJInventors: Risto Rahkola, Birgitta Peltopakka, Hannu Hämäläinen, Jonas Konn, Sari Vahlroos-Pirneskoski
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Publication number: 20110197782Abstract: A gold color metallic pigment with coating of manganese oxide nanoparticles and a method to produce the gold color pigment are described. The disclosed coated pigment includes a platelet shaped substrate, a passivation layer applied to the substrate with surface anchoring groups and a manganese oxide nanoparticles layer. The coated pigment further includes an encapsulation layer or a surface property modification layer. The disclosed method provides pigments that exhibit brilliant gold color and a highly desirable appearance of real gold without the environmental issues causing by heavy metals.Type: ApplicationFiled: February 18, 2010Publication date: August 18, 2011Applicant: SILBERLINE MANUFACTURING COMPANY, INC.Inventors: Wei WANG, Hai Hui LIN, Parfait Jean Marie LIKIBI
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Patent number: 7993444Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack. The present effect pigments may be used in cosmetic and industrial applications.Type: GrantFiled: October 19, 2006Date of Patent: August 9, 2011Assignee: BASF Catalysts LLCInventors: Daniel S. Fuller, Curtis J. Zimmermann
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Patent number: 7993443Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack. The present multilayer effect pigment may be used in cosmetics or personal care products.Type: GrantFiled: February 10, 2006Date of Patent: August 9, 2011Assignee: BASF Catalysts LLCInventors: Daniel S. Fuller, Curtis J. Zimmermann
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Publication number: 20110144251Abstract: A coated particulate solid composition includes a particulate inorganic solid having deposited on its surface a treatment oil comprising lipids. The particulate inorganic solid can include a base particle of titanium dioxide, zinc sulfide, zinc oxide, iron oxide, lead oxide, aluminum oxide, silicon dioxide, zirconium oxide and/or chromium oxide. The treatment oil is optionally a vegetable oil. The treatment oil containing lipids optionally contains glycerides such as triglycerides, and diglycerides, and can contain phospholipids. In one embodiment, the coated particulate solid composition includes particulate titanium dioxide, wherein the treatment oil provides increased bulk density, and enhanced dispersibility in plastic as well as improved lacing resistance.Type: ApplicationFiled: December 16, 2009Publication date: June 16, 2011Inventor: Modasser El-Shoubary
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Patent number: 7951420Abstract: A method of preparing a pigment exhibiting a color-shifting effect, including at least heating mica powder suspension in water, adjusting the pH value of the mixture to between 2 and 9, adding a first inorganic salt solution, maintaining the pH value of the mixture constant, stirring the mixture at constant temperature, adjusting the pH value of the mixture to between 6 and 14, adding a second inorganic salt solution, maintaining the pH value of the mixture constant, stirring the mixture at constant temperature, adjusting the pH value of the mixture to between 2 and 9, adding a third inorganic salt solution, maintaining the pH value of the mixture constant, and stirring the mixture at constant temperature.Type: GrantFiled: September 26, 2009Date of Patent: May 31, 2011Inventors: Jiansheng Fu, Yiting Peng, Xiaohui Tian
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Publication number: 20110064779Abstract: Pearlescent pigments including a largely transparent platelet-shaped substrate having a density ?S and at least one optically active coating having a density ?M, the substrate having an average size d50 of 3 to 8 ?m and an average height hS of 40 to 110 nm. The disclosure further relates to a method for producing the pearlescent pigments, and also to the use thereof.Type: ApplicationFiled: April 15, 2009Publication date: March 17, 2011Inventors: Michael Gruener, Ulrich Schmidt, Günter Kaupp, Peter Krueger, Jens Depner, Katrin Steinbach, Ralph Schneider, Frank Henglein