Antimony, Chromium, Arsenic, Or Tin Compound Containing (sb, Cr, As, Sn) Patents (Class 106/441)
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Patent number: 5702518Abstract: Gold pigments of high opacity and processes for their preparation and use.Type: GrantFiled: June 21, 1996Date of Patent: December 30, 1997Assignee: Merck Patent Gesellschaft mit ceschrankter HaftungInventors: Reiner Vogt, Klaus Bernhard, Gerhard Pfaff
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Patent number: 5693134Abstract: An interference pigment comprising a platelet-shaped substrate coated with titanium dioxide and additionally oxidic compounds of copper and manganese, whereby the pigment powder color is dark gray.Type: GrantFiled: December 29, 1994Date of Patent: December 2, 1997Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventor: Alfred Stephens
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Patent number: 5656074Abstract: Anticorrosive compositions for use in paints comprise (i) zinc oxide with (ii) the reaction product of an acidic trivalent metal compound and a silicate or (iii) an aluminium/silicate material eg a clay.Type: GrantFiled: April 17, 1995Date of Patent: August 12, 1997Assignee: Albright & Wilson LimitedInventors: John Richard Collier, Kenneth Urmston Holker
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Patent number: 5650002Abstract: A TiO.sub.2 pigment particle having a surface coating of inorganic particles or mineral particles exhibiting improved light scattering efficiency of TiO.sub.2 at a moderate to high pigment volume concentration (PVC) and a low oil absorption when incorporated in coatings applications is disclosed, and methods of accomplishing the same.Type: GrantFiled: November 13, 1995Date of Patent: July 22, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: John Davis Bolt
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Patent number: 5618342Abstract: The invention relates to a non-dusting, homogeneous pigment preparation containingat least 70% by weight of one or more flaky pigments,1-30% by weight of water,0.1-20% by weight of a humectant, andless than 1.00% by weight of one or more preservatives.Type: GrantFiled: June 2, 1994Date of Patent: April 8, 1997Assignee: Merck Patent Gesellschaft MIT Beschrankter HaftungInventors: Gerhard Herget, Otto Stahlecker, Manfred Kieser
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Patent number: 5569413Abstract: A process for producing crystallites comprising silica and antimony containing tin oxide. The quantity of antimony within the tin oxide can be reduced, thereby permitting production a powder which is absent a blue coloration.Type: GrantFiled: February 3, 1995Date of Patent: October 29, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Howard W. Jacobson
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Patent number: 5540770Abstract: Luster pigments based on coated plateletlike substrates comprising nitrogen-containing metal layers and if desired additionally one or more layers consisting essentially of colorless or selectively absorbing metal oxide, are prepared and used for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.Type: GrantFiled: June 16, 1995Date of Patent: July 30, 1996Assignee: BASF AktiengesellschaftInventors: Raimund Schmid, Norbert Mronga, Harald Ochmann, J org Adel
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Patent number: 5536448Abstract: Dendrite or asteroidal titanium dioxide micro-particles having a length of 0.2 to 0.5 .mu.m, a thickness of 0.05 to 0.1 .mu.m, and a specific surface area of 20 to 130 m.sup.2 /gram, are produced by treating hydrated titanium oxide particles with an alkali, mixing instantaneously the resulting reaction product with an amount of hydrochloric acid in a ratio of 1 to 4 mols of hydrochloric acid to one mol of the titanium oxide in the reaction product to effect a reaction, then aging under heat at 85.degree. C. or higher, and then drying or, if necessary, firing after the drying, and subsequently may be coated with at least one from oxides and hydrated oxides of elements selected from aluminum, silicon, titanium, zirconium, tin and antimony to improve the dispersibility and resistance to light of the particles, or may be coated with tin oxide containing antimony or indium oxide containing tin to make the particles electroconductive.Type: GrantFiled: October 20, 1994Date of Patent: July 16, 1996Assignee: Ishihara Sangyo Kaisha, Ltd.Inventors: Hideo Takahashi, Akihito Sakai, Masakazu Hattori
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Patent number: 5476613Abstract: A process for producing crystallites comprising silica and antimony containing tin oxide. The quantity of antimony within the tin oxide can be reduced, thereby permitting production a powder which is absent a blue coloration.Type: GrantFiled: March 25, 1994Date of Patent: December 19, 1995Assignee: E. I. du Pont de Nemours and CompanyInventor: Howard W. Jacobson
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Patent number: 5472797Abstract: An optional element having a cured coating film on optical base material wherein the cured coating film is prepared with a coating composition comprising an organosilicon compound and modified stannic oxide-zirconium oxide composite colloidal particles which are obtained by partially or fully coating the surface of stannic oxide-zirconium oxide composite colloidal particles with tungstic oxide-stannic oxide composite colloidal particles. The formed cured coating film is excellent in hot water resistance, and light-resistance and weathering resistance are not impaired even when the antireflection film made by vepor deposition of inorganic oxides is applied on the cured coating film.Type: GrantFiled: July 7, 1993Date of Patent: December 5, 1995Assignee: Hoya CorporationInventors: Eiichi Yajima, Yoshitane Watanabe, Keitaro Suzuki, Tetsunori Matsukura
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Patent number: 5401306Abstract: Luster pigments based on coated, plateletlike, silicatic or metallic substrates wherein the coating comprises a metal sulfide are useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.Type: GrantFiled: August 5, 1994Date of Patent: March 28, 1995Assignee: BASF AktiengesellschaftInventors: Raimund Schmid, Norbert Mronga
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Patent number: 5366545Abstract: A coating composition comprising an organosilicon compound and modified stannic oxide - zirconium oxide composite colloidal particles which are obtained by partially or fully coating the surface of stannic oxide - zirconium oxide composite colloidal particles with tungstic oxide - stannic oxide composite colloidal particles. The formed cured coating film is excellent in hot water resistance, and light-resistance and weathering resistance are not impaired even when the antireflection film made by vepor deposition of inorganic oxides is applied on the cured coating film.Type: GrantFiled: July 7, 1993Date of Patent: November 22, 1994Assignees: Hoya Corporation, Nissan Chemical Industries, Ltd.Inventors: Eiichi Yajima, Yoshitane Watanabe, Keitaro Suzuki, Tetsunori Matsukura
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Patent number: 5364467Abstract: Luster pigments useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations are based on multiply coated plateletlike metallic substrates comprisingA) a first, colorless or selectively absorbing layer of metal oxide,B) a second, nonselectively absorbing layer of carbon, metal and/or metal oxide, andC) if desired a third, colorless or selectively absorbing layer of metal oxide.Type: GrantFiled: April 30, 1993Date of Patent: November 15, 1994Assignee: BASF AktiengesellschaftInventors: Raimund Schmid, Norbert Mronga
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Patent number: 5364566Abstract: A method for preparing a substantially white electroconductive powders by applying a surface coating comprising a two-dimensional network of antimony-containing tin oxide to amorphous silica or silica coated particles.Type: GrantFiled: February 12, 1993Date of Patent: November 15, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Howard W. Jacobson
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Patent number: 5350448Abstract: A process for the preparation of light-colored, electrically conductive pigments based on substrates having an expansion of not more than 500 .mu.m, which pigments consist of one or more metals, metal oxides or materials containing metal oxide, silicon oxide or silicate materials and contain, if desired above one or more other metal oxide and/or silicon oxide layers, an outer layer based on halogen-doped tin oxide and/or titanium oxide.Type: GrantFiled: April 22, 1993Date of Patent: September 27, 1994Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Johann Dietz, Klaus Franz, Gerhard Pfaff, Reiner Vogt, Katsuhisa Nitta
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Patent number: 5336312Abstract: This invention relates to colorants represented by the formulaBi.sub.2 A.sub.x-1 D.sub.x O.sub.ywherein: A is selected from the group consisting of Bi, Ba, Sr, Ca, Y, La, or a mixture of two or more thereof; D is selected from the group consisting of V, Mo, Mn, Ti, Ta, Nb, W, Sb, Fe, Cr, Sn, Ce, or a mixture of two or more thereof; x is a number that is at least 1; and y is the number of oxygens needed to fulfill the valence requirements of Bi, A and D; with the proviso that when A is Bi, D is other than a mixture consisting of V and Mo. These colorants are useful in providing colored compositions including: organic compositions such as plastics, rubbers, and the like; inorganic compositions such as ceramics, porcelain enamels, and the like; and coating compositions such as paints, printing inks, and the like; etc. The invention also provides for processes for making such colorants and for making such colored compositions. The invention also provides for such colorants in the form of particulate solids (e.g.Type: GrantFiled: May 10, 1993Date of Patent: August 9, 1994Assignee: Ferro CorporationInventors: Christine J. Byrne, Robert P. Blonski, John J. Welch
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Patent number: 5320781Abstract: There is disclosed an electrically conductive pigment containing 20 to 95% by weight of a component A comprising one or more conductive platelet-like pigments and 5 to 80% by weight of a component B comprising one or more conductive needle-shaped or fibrous pigments.Type: GrantFiled: April 16, 1993Date of Patent: June 14, 1994Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Otto Stahlecker, Manfred Thon, Ralf Glausch, Gerhard Pfaff, Manfred Kieser, Wilhelm Gobel
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Patent number: 5296168Abstract: An electroconductive powder composition of antimony-containing tin oxide with an outer layer of hydrous metal oxide having an isoelectric point in the range from about 5 to 9.Type: GrantFiled: December 19, 1990Date of Patent: March 22, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Howard W. Jacobson
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Patent number: 5238492Abstract: Disclosed are a pigment, a production process therefor, a production process therefor and for improving its weather resistance, and a metallic paint made therefrom. The pigment includes a transparent or semi-transparent scaly substrate, a TiO.sub.2 layer coated on an entire surface of the substrate, light absorbing portions formed on a surface of the TiO.sub.2 layer in a scattering manner and including low order oxides of titanium, and glossy portions formed on a surface of the TiO.sub.2 layer in a scattering manner and having a metallic glossy effect. The pigment produces a metallic glossy effect resulting from the glossy portions, strong interference colors resulting from the TiO.sub.2 layer and substance colors resulting from the light absorbing portions, and it exhibits a great covering power.Type: GrantFiled: November 1, 1991Date of Patent: August 24, 1993Assignees: Toyota Jidosha Kabushiki Kaisha, Nisshin Steel Co., Ltd.Inventors: Hiroshi Itoh, Yuji Tanaka, Koji Kuroyanagi, Eiki Takeshima, Kaoru Gonoi, Takashi Shirokura, Noriyuki Suzuki
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Patent number: 5215580Abstract: A process produces fine particle titanium dioxide essentially transparent to visible light and essentially UV radiation absorbing. During preparation of the titanium dioxide product, tin dioxide with a particle size of 1 to 10 nm, and preferably 1 to 4 nm, is added, in an amount of 0.5 to 10 weight percent with respect to TiO.sub.2. The particle size of the titanium dioxide is specifically adjusted by the tin dioxide addition. Acicular particles are rounded by heat-treatment between 300.degree. and 800.degree. C., and preferably between 400.degree. and 600.degree. C. The particles can be post-treated to produce a coating of inorganic and/or organic substances. The fine particle titanium dioxide can be prepared by the decomposition of sodium titanate with hydrochloric acid or by suitable hydrolysis of a tetravalent titanium compound which leads to rutile formation.Type: GrantFiled: February 6, 1992Date of Patent: June 1, 1993Assignee: Kronos USA, Inc.Inventors: Lothar Elfenthal, Edgar Klein, Franz Rosendahl
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Patent number: 5188667Abstract: An aqueous sol of colloidal particles of tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.2) composite having a particle size of from 2 to 7 millimicrons is prepared by blending an aqueous solution of tungstic acid and an aqueous solution of an stannate in a weight ratio of from 0.5 to 100 as WO.sub.3 /SnO.sub.2. Where the WO.sub.3 -SnO.sub.2 composite sol in an amount of from 2 to 100 parts by weight as the total of WO.sub.3 and SnO.sub.2 is blended with a sol of a 3- to 5 valent metal oxide having a particle size of from 4 to 50 millimicrons in an amount of 100 parts by weight as the metal oxide, a modified metal oxide sol of colloidal particles having a size of 4.5 to 60 millimicrons as surface-coated with the tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.5) composite colloidal particles is prepared.Type: GrantFiled: November 21, 1991Date of Patent: February 23, 1993Assignee: Nissan Chemical Industries, Ltd.Inventors: Yoshitane Watanabe, Keitaro Suzuki
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Patent number: 5177395Abstract: A cadmium free bug lamp which emits a yellow color when energized and which has very low emission in the range of from 310-380 nm employs a coating wherein the yellow emitting pigment is a rutile TiO.sub.2 containing minor amounts of antimony and chromium in the rutile crystal lattice.Type: GrantFiled: March 15, 1991Date of Patent: January 5, 1993Assignee: General Electric CompanyInventor: Juliana P. Reisman
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Patent number: 5167708Abstract: A process for the preparation of chromate-free, Cr.sub.2 O.sub.3 -containing pigments having a spinel, haematite or corundum structure comprises blending pigment-forming raw materials corresponding to the Cr.sub.2 O.sub.3 -containing pigments with from 0.5 to 10% by weight of boric acid or phosphoric acid, calculated as B.sub.2 O.sub.3 or P.sub.2 O.sub.5, respectively, and then annealing the blend whereby the chromate-free, Cr.sub.2 O.sub.3 -containing pigment is obtained.Type: GrantFiled: March 23, 1992Date of Patent: December 1, 1992Assignee: Bayer AktiengesellschaftInventors: Volker Wilhelm, Dieter Messer
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Patent number: 5137575Abstract: TiO.sub.2 -based chromatic pigments are provided by coating core particles of TiO.sub.2 having a mean particle size from 0.01 to 0.1 .mu.m with a layer of metal oxide of Ni, Co, Ce, Cu, Cr, Mn, V, W or a mixutre thereof.Type: GrantFiled: May 30, 1990Date of Patent: August 11, 1992Assignee: Tayca CorporationInventors: Takashi Yasuki, Shunji Idei
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Patent number: 5108508Abstract: Novel rutile mixed phase pigment microgranulates are disclosed which comprise hemispherical particles indented to form toroid-shaped beads. The microgranulates are free-flowing, non-dust forming, and are stable in handling.Type: GrantFiled: September 10, 1990Date of Patent: April 28, 1992Assignee: Bayer AktiengesellschaftInventors: Jakob Rademachers, Hans-Ulrich Hofs, Dieter Rade
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Patent number: 5094691Abstract: An aqueous sol of colloidal particles of tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.2) composite having a particle size of from 2 to 7 millimicrons is prepared by blending an aqueous solution of tungstic acid and an aqueous solution of a stannate in a weight ratio of from 0.5 to 100 as WO.sub.3 /SnO.sub.2. Where the WO.sub.3 --SnO.sub.2 composite sol in an amount of from 2 to 100 parts by weight as the total of WO.sub.3 and SnO.sub.2 is blended with a sol of a 3- to 5 valent metal oxide having a particle size of from 4 to 50 millimicrons in an amount of 100 parts by weight as the metal oxide, a modified metal oxide sol collidal particles having a size of 4.5 to 60 millimicrons as surface-coated with the tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.5) composite colloidal particles is prepared.Type: GrantFiled: October 30, 1990Date of Patent: March 10, 1992Assignee: Nissan Chemical Industries, Ltd.Inventors: Yoshitane Watanabe, Keitaro Suzuki
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Patent number: 5022923Abstract: Pearl luster pigments based on mica flakes coated with metal oxides are provided with a top coating of tin dioxide and/or cerium dioxide to improve their stability in glazes and enamels.Type: GrantFiled: October 8, 1986Date of Patent: June 11, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Axel Rau, Klaus Ambrosius, Klaus D. Franz
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Patent number: 5002608Abstract: The weatherability and lightfastness of TiO.sub.2 coated micaceous iron oxide (MIO) pigment may be improved by transforming the TiO.sub.2 present in the coating layer to rutile TiO.sub.2. Further improvement in the weatherability and lightfastness may be achieved by coating the pigment with an oxide of Cr, V, Mo, Al or a mixture thereof and/or a hydrous oxide of Cr or V, or a combination of two or more hydrous oxides of Cr, V, Al and Si.Type: GrantFiled: February 26, 1990Date of Patent: March 26, 1991Assignee: Tayca CorporationInventors: Sanji Fujiwara, Nobumoto Hiraoka, Mitsuo Harada, Hiroshi Shitamichi
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Patent number: 4979991Abstract: A production process of pigment according to this invention comprises the steps of: a first step of forming an inorganic compound coating layer on the entire surfaces of scaly substrates made of ceramic; a second step of forming metallic glossy dots on the surfaces of the inorganic compound coating layer in a scattered manner by an electroless plating, and the metallic glossy dots occupying from 0.05 to 95% of the surfaces of the inorganic compound coating layer with respect to the total surface area of the inorganic compound coating layer; and a third step of irradiating ultraviolet ray on particles formed by the second step. The impurities and the like, which adversely affect the color hue of the pigment, have been discolored or faded away by the ultraviolet ray irradiation in the third step. Accordingly, the pigment having good weather resistance can be produced readily and stably by the present invention.Type: GrantFiled: September 18, 1989Date of Patent: December 25, 1990Assignee: Toyota Jidosha Kabushiki KaishaInventors: Junichi Handa, Hiroshi Itou, Taketoshi Minohara, Yoshio Takagi
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Patent number: 4976787Abstract: A pigment comprises a substrate, a metallic layer formed on at least one surface of the substrate and imparting metallic luster, and a transparent inorganic compound layer formed on surfaces of the substrate and the metallic layer. Thereby, the pigment produces color by light interference of a ray reflected on a surface of the transparent inorganic compound layer and a ray passed through the transparent inorganic compound layer and reflected on a surface of the metallic layer. Thus, the pigment is excellent in coloring power and hiding power, and particularly useful for an automotive finishing paint.Type: GrantFiled: March 14, 1990Date of Patent: December 11, 1990Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroshi Ito, Junichi Handa, Yoshio Takagi, Taketoshi Minohara
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Patent number: 4919723Abstract: Chromium-antimony-rutile mixed phase pigments containing from 0.01 to 0.25% by weight of lithium are surprisingly insensitive to rapid cooling and chilling and are used for coloring plastic compositions such as polyamide or ABS plastics.Type: GrantFiled: November 21, 1988Date of Patent: April 24, 1990Assignee: Bayer AktiengesellschaftInventors: Volker Wilhelm, Manfred Mansmann
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Patent number: 4840668Abstract: The invention relates to corrosion-inhibiting pigments containing metallic oxides, phosphates and/or molybdates, wherein the metals are zinc, aluminum, iron, barium, strontium, calcium, magnesium and titanium, singly or in combination, wherein the pigments also contain 0.03-2% by weight of soluble sodium dichromate or equivalent amounts of potassium dichromate, ammonium dichromate or equivalent amounts of respective chromates or chromic acid, singly or in their mixture. The invention also relates to a process for the manufacture of the pigments by thorough homogenization of the chromate components with the pigments, and to the use of the pigments in primers for ferrous and non-ferrous metallic substrates.Type: GrantFiled: September 30, 1987Date of Patent: June 20, 1989Assignee: Dr. Hans Heubach GmbH & Co. KGInventors: Manfred Gawol, Gerhard Adrian