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| Number | Title | Issue Date |
| 7347893 | Iron oxide pigments from mill scale The current invention relates to a method of manufacturing iron oxide pigments from mill scale. The mill scale is mixed with alien iron oxide and the resultant mixture is heated to a temperature of 200° C. to 900° C. in an oxidizing atmosphere to produce iron oxid... | 03/25/2008 |
| 7341626 | Pigment compositions consisting of organic and inorganic pigments A pigment composition containing one or more, organic yellow pigments selected from the group C.I. Pigment Yellow (213), Pigment Yellow (214) and disazo pigment of the formula (I) and containing one or more inorganic pigmen... | 03/11/2008 |
| 7318861 | Effect pigment An effect pigment is constituted by coated laminar platelets in which the platelets are a mixture of different platelet materials, one of which is platy glass or platy aluminum oxide, and in which the pigment exhibits visual homogeneity. ... | 01/15/2008 |
| 7316741 | Ceramic colorants in the form of nanometric suspensions Described herein are ceramic colorants consisting of suspensions of particles of nanometric dimensions, their production and use. ... | 01/08/2008 |
| 7220305 | Particulate metal oxide A particulate metal oxide having the mean length of the primary particles in the range from 50 to 90 nm, the mean width of the primary particles in the range from 5 to 20 nm, and the median volume particle diameter of the secondary particles is less than 45 nm. The ... | 05/22/2007 |
| 7156914 | Pigment paste for concrete and method for making the same A pigment paste and a method for making the same that alters the appearance of concrete such that, after the concrete sets, it resembles natural stone concrete sets, it resembles natural stone (e.g., marble, granite, sandstone, bluestone, etc.) without separately ap... | 01/02/2007 |
| 7135067 | Water-based pigment dispersions, the production thereof and the use of the same The invention relates to a pigment dispersion consisting essentially of a) at least one organic or inorganic pigment or a combination of the same, b) an alpha-methyl--omega-hydroxy-polyethylene glycol ether having an average molar mass of between 250 and 1000 g/mol,... | 11/14/2006 |
| 7077898 | Black pigment compositions The present invention relates to black pigment compositions comprising (a) carbon black, and (b) a compound of the formula (MO3S)m-Q(CH2)k—X]n, (I) ... | 07/18/2006 |
| 7060126 | Multilayered luster pigments The invention relates to multilayered luster pigments based on metallic substrates, which are completely surrounded by a plurality of layers, where these layers comprise at least one layer pack (A) having a colorless dielectric layer of a material with a refractive ... | 06/13/2006 |
| 7018465 | Aerosolized ceramic porcelains and glaze composition A spray glaze or opaque composition for coating dental restorations and other surfaces and objects such as hobby ceramics that comprises about 4 to about 50 weight % glaze material, about 5 to about 60 weight % restoration wetting agent, and about 10 to about 90% no... | 03/28/2006 |
| 7011703 | Surface-treated pigments Inorganic pigments, having deposited on the pigment surface at least one alkenyl- or alkyl-substituted succinic anhydride and at least one organic polyol, possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties t... | 03/14/2006 |
| 6966998 | Security printing A method of providing covert security features for documents such as vouchers, packaged goods and banknotes in which the document is provided with a dopant. The dopant consisting of a material which can be identified by examination of its response to visible wavelen... | 11/22/2005 |
| 6958091 | Surface-treated pigments Inorganic pigments treated with at least one amide of a fatty acid and an aliphatic amine possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigm... | 10/25/2005 |
| 6946028 | Surface-treated pigments Inorganic pigments treated with one or more of the α,α-dialkyl substituted linear or branched carboxylic acids and the salts thereof possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic comp... | 09/20/2005 |
| 6932862 | High temperature coating composition and method of applying A high temperature resistive coating composition includes a pigmenting component, a binder component, and a hardening agent. The pigmenting component includes a spinel of the formula AB2O4, in which A is selected from the group consisting of Mg... | 08/23/2005 |
| 6929690 | Pigment with a metallic luster A pigment with a metallic luster, comprising a wafer-like substrate made of aluminium dioxide having a thickness of more than 250 nm and less than 1 μm, which is fully enveloped by a metal layer. ... | 08/16/2005 |
| 6911075 | Pigments having improved coloristic properties and process for their preparation The invention relates to a process for preparing pigments, which comprises subjecting a crude pigment or mixture of crude pigments and a crystalline inorganic salt or mixture of crystalline inorganic salts together, essentially in ... | 06/28/2005 |
| 6908600 | Method for obtaining pigments for ceramic and glass, and pigments obtained thereby A method for obtaining pigments for ceramic and glass, particularly for substrates and coatings, including a step of adding a solution of an iron salt to at least one silicon addition agent including silica in gel form. ... | 06/21/2005 |
| 6881255 | Pigment preparations Pigment preparations comprising a) at least one pigment, b) at least one polyethyleneimine which is alkoxylated, especially ethoxylated and propoxylated and/or butoxylated, and c) at least one condensation product based on ... | 04/19/2005 |
| 6875264 | Multi-layer effect pigment 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 n... | 04/05/2005 |
| 6866710 | Inorganic spherical absorption pigments The present invention relates to inorganic spherical absorption pigments which have a bimodal particle-size distribution, at least one color-providing layer and a final SiO2 layer, and to the use thereof in paints, coatings, printing inks, security printi... | 03/15/2005 |
| 6818050 | Lacquers and paints and coating material systems Paint and coating material system comprising a) at least one solids component comprising at least one organic or inorganic white, black or chromatic pigment, organic or inorganic fillers, or mixtures thereof, and b... | 11/16/2004 |
| 6811601 | Pigment preparations comprising alkoxylated polyethylenimine Pigment preparations comprising A) at least one organic or inorganic pigment and B) at least one ethoxylated and propoxylated and/or butoxylated polyethyleneimine. ... | 11/02/2004 |
| 6767633 | Transparent medium having angle-selective transmission or reflection properties and/or absorption properties The invention relates to a transparent medium comprising multilayer pigments having angle-selective reflection or transmission properties and/or absorption properties, and to their use, in particular in transparent thermal insulation systems (TTIs). ... | 07/27/2004 |
| 6767396 | Process for the preparation of aqueous magnetic ink character recognition ink-jet ink compositions A process for preparing an aqueous ink-jet ink composition for MICR applications is provided comprising preparing a metal oxide pre-dispersion combined with an aqueous ink-jet ink composition, wherein the metal oxide pre-dispersion contains metal oxide pigment or pa... | 07/27/2004 |
| 6758893 | Granular pigments useful to color concrete A method for the preparation of pigment granules includes mixing at least one pigment selected from the group consisting of iron oxide and chromium oxides with 1-25 wt. % water to form a damp powder. The damp powder is then pressure extruded through at least one die... | 07/06/2004 |
| 6746527 | Aqueous magnetic ink character recognition ink-jet ink composition containing a combination of special surfactants An aqueous ink-jet ink composition for MICR applications is provided comprising a metal oxide pre-dispersion combined with an aqueous ink-jet ink composition, wherein the metal oxide pre-dispersion contains metal oxide pigment or particles of a very small particle s... | 06/08/2004 |
| 6736892 | Pigment dispersions containing styrenated and sulfated phenol alkoxylates The present invention provides sulfated and carboxymethylated surfactants and dispersants produced by reacting a styrenated phenol alkoxylate with sulfamic acid and then neutralizing with a base such as ammonium hydroxide. The instant invention also provides pigment... | 05/18/2004 |
| 6726759 | Aqueous magnetic ink character recognition ink-jet ink composition An aqueous ink-jet ink composition for MICR applications is provided comprising a metal oxide pre-dispersion combined with an aqueous ink-jet ink composition, wherein the metal oxide pre-dispersion contains metal oxide pigment or particles of a very small particle s... | 04/27/2004 |
| 6680121 | Bismuth-containing laser markable compositions and methods of making and using same The present invention relates to additive, pigment or colorant materials which may be used for laser marking. The materials comprise oxides of bismuth and at least one additional metal. Preferred laser-markable bismuth-containing oxide compounds are of th... | 01/20/2004 |
| 6652829 | Continuous calcination of mixed metal oxides A method for continuously calcinating product to form mixed metal oxide powders comprising providing a continuously operated indirectly heated rotary furnace having a heating cavity, introducing raw feedstock including product to be calcined into the heat... | 11/25/2003 |
| 6648957 | Multilayer nacreous pigment Multilayer pearl lustre pigment on the basis of a platelet-shaped substrate comprising a material of low refractive index in the range from 1.35 to 1.8, which comprises at least (i) one first layer comprising a material having a refractive index of more ... | 11/18/2003 |
| 6630018 | Colored and coated plateletlike pigments The invention relates to a platelet-shaped pigment having high luster and high covering power or high transparency, consisting of a transparent, inorganic, platelet-shaped matrix which can contain an additional constituent, characterized in that the addit... | 10/07/2003 |
| 6616745 | Black pearlescent pigments A metal oxide-coated mica pearlescent pigment having a coating of copper chromite thereon is provided.... | 09/09/2003 |
| 6596073 | Solid pigment preparations The invention relates to a solid pigment composition comprising a) at least one pigment, b) at least one compound selected from the group consisting of b0) a phenol-styrene-polyglycol ether or an ionically modified phenol-styrene-polyglycol ether, b1) a condensatio... | 07/22/2003 |
| 6582814 | Rare earth-transition metal oxide pigments Rare earth-transition metal oxides are used as pigments. The rare earth-transition metal oxide pigments are preferably of the formula (Rex Tm)Oy, where Re is at least one rare earth element, Tm is at least one transition metal, x ran... | 06/24/2003 |
| 6582506 | Pigment flakes Pigment flakes having cores preferably composed of resins, polymers, thermoplastics, and/or thermosets with colorant (pigment and/or dyes) deposited thereon, coating applications thereof, and a method for making pigment flakes which includes providing a c... | 06/24/2003 |
| 6579356 | High strength Fe-Cr brown with excellent weathering One aspect of the invention relates to a brown pigment composition with excellent weathering resistance containing iron oxide, chromium oxide, and one or more alumina and/or silica components. Another aspect of the invention relates to a method of making ... | 06/17/2003 |
| 6562120 | Granular pigments The present invention provides a method for the preparation of pigment granules that are readily dispersible, robust, and have a reduced liability to dusting, preferably without the use of substantial quantities of binder, if any at all. The method compri... | 05/13/2003 |
| 6533857 | Gloss pigments comprising an absorbent low-refractive coating Luster pigments based on multiply coated reflecting platelet-shaped substrates and comprising at least one layer packet comprising A) a low refractive coating which selectively absorbs visible light and B) a reflective coating which is at least partially transparen... | 03/18/2003 |
