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| Number | Title | Issue Date |
| 7563316 | Method for producing a colored sand composition, and composition thereof The invention relates to a method for producing a coloured sand composition containing a large number of silica sand grains with outer coatings of colour pigments, wherein the method comprises the following steps: mixing caustic so... | 07/21/2009 |
| 6913634 | Abrasives for copper CMP and methods for making An aqueous chemical mechanical polishing slurry is provided that comprises precipitated amorphous silica abrasive particles treated with acidic aluminum. Also provided is a method of polishing an electronic component substrate comprising the steps of: a) obtaining a... | 07/05/2005 |
| 6793720 | Solid marking composition as writing means, a writing instrument, an optically variable marking layer and use of a plurality of optically variable pigments A solid marking composition comprises a solid matrix containing at least one type of optically variable interference pigment flakes. The solid marking composition provides a document or article with a copy and counterfeit protection feature, and is preferably used i... | 09/21/2004 |
| 6706785 | Methods and compositions related to laser sensitive pigments for laser marking of plastics Platelet-shaped substrates that are coated with metal oxides and that are useful in the laser marking of plastics are disclosed. The platelet-shaped substrates may be employed as an additive to plastic for laser marking of a wide variety of plastics and for use with... | 03/16/2004 |
| 6610136 | Pigments for ink jet paper Aggregated mineral pigments (such as kaolin clay pigments) having a high surface area and useful in coating and filling compositions for ink jet printing media are manufactured by dry grinding an unground mineral composition starting material and then opt... | 08/26/2003 |
| 6602341 | Treating kaolinitic clays A method of treating a kaolinitic clay which is intended for use as an ingredient in a ceramic composition which method comprises the steps of: (a) mixing with the kaolinitic clay from 0.1% to 15.0% by weight, based on the dry weight of the kaolinitic clay, of... | 08/05/2003 |
| 6444025 | Red-tinged bismuth vanadate pigments Zirconium-containing, red-tinged bismuth vanadate pigments of general formula I, BiVb Ox.Ca.sub.c (MoO4)d.Zr.sub.e Sif Oy.F.sub.z I wherein the variables have the following meanings: b 0.8 to 1... | 09/03/2002 |
| 6440209 | Composite pigments comprising in-situ precipitated metal carbonate crystals Composite pigments comprising particles of silicate or oxide minerals having deposited thereon a multiplicity of particles of a metal carbonate as a result of in-situ precipitation.... | 08/27/2002 |
| 6267811 | Talc slurry dispersion An aqueous talc slurry that exhibits minimal foaming comprises talc pigment, a carboxymethyl cellulose (CMC) wetting agent having a molecular weight of between 50,000 and 150,000, an ionic polyacrylate dispersing agent, and has a solids content of between... | 07/31/2001 |
| 6242098 | Method of making mineral filler and pozzolan product from fly ash A method for producing a mineral filler and pozzolan product from fly ash is provided in which fly ash is dry processed in an air classifier to obtain a fine fraction having an average particle size of from about 0.1 to 5 microns and a coarse fraction hav... | 06/05/2001 |
| 6139960 | Method of making a mineral filler from fly ash A method for producing a mineral filler from fly ash is provided in which fly ash is dry processed in an air classifier to obtain a fine fraction having an average particle size of from about 0.1 to 5 microns. The fine fraction is then preferably passed t... | 10/31/2000 |
| 6139616 | Rust-preventive pigment composition and rust-preventive paints containing the same The present invention relates to an anti-corrosive pigment composition, characterized by comprising, as main components, white anti-corrosive pigment and an inorganic anion exchanger represented by the following formula (1): (3-4)[M1 ]O.Al... | 10/31/2000 |
| 6139610 | Hybrid pigment grade corrosion inhibitor compositions and procedures A corrosion-inhibiting composition for application to a metal substrate, such as steel, silver, copper or aluminum, includes a film-forming organic polymer component and a dispersed pigment phase of a stable unitary hybrid which contains organic and inorg... | 10/31/2000 |
| 6083317 | Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum and uses therefor An improved form of calcium carbonate which is acid resistant to enable its use as a filler material in the making of neutral to weakly acidic paper, and a process for producing this acid-resistant calcium carbonate is provided. This acid-resistant calciu... | 07/04/2000 |
| 6074474 | Multi-component pigment slurry and method of making the same A multi-component pigment slurry which comprises at least 50% solids. The slurry is formulated to be admixed into paint and coating compositions to promote TiO2 extension. The slurry includes a structured pigment, a coarse particle size pigment... | 06/13/2000 |
| 6007616 | Process for preparing colored mineral powders by irradiation Disclosed is a system of natural colours consisting of thousands of coloured powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natura... | 12/28/1999 |
| 5997626 | Low abrasion calcined kaolin pigments and enhanced filtration method A method for reducing the abrasion of a silica-containing calcined kaolin pigment by the controlled leaching of silica from the pigment, preferably by the use of a caustic solution to dissolve the silica out of the calcined kaolin. In another aspect of th... | 12/07/1999 |
| 5958125 | Goniochromatic luster pigments based on transparent, nonmetallic, platelet-shaped substrates Goniochromatic luster pigments based on multiply coated, high refractive, nonmetallic, platelet-shaped substrates which are at least partially transparent to visible light, comprising at least one layer packet of A) a colorless coating having a refractive inde... | 09/28/1999 |
| 5931998 | Process for preparing colored mineral powders by chemical treatment Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural ... | 08/03/1999 |
| 5908499 | Colored powders prepared by a combination of two thermal, chemical or irradiation processes Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural ... | 06/01/1999 |
| 5897698 | Non-settling , universal machine dispensable pearlescent pigment dispersions An aqueous, non-settling, universal nacreous pigment dispersion that can be used in dispensing machines for the custom mixing of retail and trade sales of alkyd or solvent-thinned and water-based surface coatings employs a synthetic silicate, sodium lithi... | 04/27/1999 |
| 5888291 | Alkaline-earth metal-, copper- and optionally titanium-based silicates, blue or violet pigments based on these silicates, process for their preparation and their use Alkaline-earth metal- and copper- and optionally titanium-based silicates in the form of agglomerates consisting either of monocrystalline grains or of aggregates themselves consisting of monocrystalline particles. These silicates are prepared by a process inc... | 03/30/1999 |
| 5766336 | Colored pigments based on oxide-nitrides, the preparation and use thereof Colored pigments are provided from the green-yellow to red spectrum based on oxide-nitrides with two or three different cations Q, R and S in the crystal lattice, wherein the nitrogen to oxygen atomic ratio is determinative for the color. These pigments c... | 06/16/1998 |
| 5735939 | Pigment preparation for anti-corrosion coating material A pigment preparation for anti-corrosion coating materials, comprising (i) 3-40% by weight of a monomeric or polymeric, metal-free or metal-containing chelate-forming compound, preferably a phthalocyanine, (ii) 3-40% by weight of a material in flake form, preferabl... | 04/07/1998 |
| 5688316 | Pigmented substrates comprising terbium compound colorants Colored/pigmented substrates, for example plastics, paints, varnishes, ceramics, glazes, papers, inks, cosmetics, dyes, binders, coatings, rubbers, etc., include an effective coloration-imparting amount of at least one colorant terbium compound having the... | 11/18/1997 |
| 5547502 | Dispersible silica particulates and reinforcement of elastomer/rubber matrices therewith Uniquely dispersible precipitated silica particulates, e.g., beads, powders and granulates/extrudates, very well suited for the reinforcement of elastomer/rubber matrices, e.g., tires for the automotive industry, have characteristic particle sizes, BET an... | 08/20/1996 |
| 5453212 | Powdery hydrophobic filler for bituminized traffic surfaces The invention concerns a powdery, hydrophobic filler for bituminized traffic surfaces, including at least one substance that lowers the freezing point of water.... | 09/26/1995 |
| 5352287 | Precipitated encapsulated paper pigments and methods A composite pigment product useful as a paper filler pigment comprises a mineral nucleus coated with a substantially continuous substantially uniform coating of an active paper pigment. The active paper pigment coating is preferably formed in situ under a... | 10/04/1994 |
| 5300147 | Low brightness magnesium silicate SLR filler, low-brightness paper containing the filler and methods to produce the filler and use it in low brightness papers A method for producing a low-structure magnesium silicate SLR product useful to lower the strike through of low brightness paper products comprises adding a raw mineral source of soluble magnesium ions and sulfuric acid in a proportion and under condition... | 04/05/1994 |
| 5284512 | Polyaspartic acid and its salts for dispersing suspended solids Water soluble salts of a ଲ-polyaspartic acid, i.e., a polyaspartic acid having predominantly beta linkages in the amino acid residue chain thereof, are eminently well suited as dispersants for particulate matter in an aqueous medium.... | 02/08/1994 |
| 5219660 | Precipitated encapsulated paper pigments and methods A composite pigment product useful as a paper filler pigment comprises a substantially inert mineral nucleus coated with a substantially continuous uniform coating of an active paper pigment. The active paper pigment coating is preferably formed in situ u... | 06/15/1993 |
| 5201950 | Low brightness magnesium silicate SLR filler low brightness paper containing the filler and methods to produce the filler and use it in low brightness papers A method for producing a low-structure magnesium silicate SLR product useful to lower the strike through of low brightness paper products comprises adding a raw mineral source of soluble magnesium ions and sulfuric acid in a proportion and under condition... | 04/13/1993 |
| 5053282 | Non-inflammable insulating composite material Disclosed is a non-inflammable insulating, composite material capable of being shooted onto a surface to be coated, such as the wall of a building to be insulated. This material comprises a fibrous-like, synthetic forsterite obtained by calcination of chr... | 10/01/1991 |
| 4842935 | Filler for separating optical isomer A filler for separating an optical isomer comprising a surface-hydrophobic filler component and an optically active lipophilic crown compound carried on the filler component by adsorption. The filler may be charged in a column to carry out separation of a... | 06/27/1989 |
| 4737525 | Process for the production of thixothropic silicates and stable organic-silicate emulsions Thixotropic silicates and stable emulsions are produced by reacting a salt-forming compound such as mineral acids and a powdered natural silicate in a liquid organic compound. The thixotropic silicate such as minerals containing silicates may be utilized ... | 04/12/1988 |
| 4687595 | Process for producing corrosion inhibiting particles A process for producing corrosion inhibiting particles comprising binding corrosion inhibiting cations by ion-exchange to particles of silica or alumina, which preferably have a BET surface area of at least 500 m2 /g, to form cation exchanged p... | 08/18/1987 |
| 4640943 | Surface modifier for inorganic substances An inorganic composition of improved characteristics comprising at least one particulate inorganic substance whose surface is modified by an N-acylated basic amino acid.... | 02/03/1987 |
| 4551497 | Method of producing surface-treated barium sulfate A method of producing surface-treated barium sulfate is disclosed which has an improved dispersibility in resins and coating compositions. The method comprises adding an aqueous solution of an alkali silicate to an aqueous slurry of barium sulfate which c... | 11/05/1985 |
| 4505755 | Method of producing surface-treated barium sulfate A method of producing surface-treated barium sulfate is disclosed which has an improved dispersibility in resins and coating compositions. The method comprises adding an aqueous solution of an alkali silicate to an aqueous slurry of barium sulfate which c... | 03/19/1985 |
| 4479828 | Light colored and low density mineral filler from magnesium silicate A light colored and asbestos free granular material of the invention is suitable for use as lightweight fillers in plastics and is derived from asbestos tailings wherein the MgO:SiO2 ratio is at least 1.0, said granular material comprising part... | 10/30/1984 |
