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| Number | Title | Issue Date |
| 7390358 | Modified kaolin compositions and methods for making same A method for preparing a modified kaolin clay, includes the steps of providing a kaolin clay material having a starting ratio of silica to alumina; mixing the kaolin clay material with acid so as to form a substantially homogenous paste; calcining the paste so as to... | 06/24/2008 |
| 7335342 | Process for the preparation of sodium silicate from Kimberlite tailing In the present invention a process for the preparation of sodium silicate from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting Kimberlite tailing with mineral acid to remove acid soluble impurities foll... | 02/26/2008 |
| 7285162 | Titanium dioxide pigment having improved light stability In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints. ... | 10/23/2007 |
| 7125432 | Method for making precipitated silica or silicate compositions and products thereof New methods of producing narrower particle size distribution precipitated silica and/or silicate materials are provided. Such a method permits a significant reduction in manufacturing costs through the utilization of more efficient drying/evaporation components, in ... | 10/24/2006 |
| 7074391 | Use of olive oil in the preparation of a product for oral hygiene for eliminating or reducing bacterial plaque and/or bacteria in the mouth The use of olive oil is described in the preparation of a product intended for oral hygiene, for example, a toothpaste, a mouthwash, a spray or oral inhaler or chewing gum, to eliminate or to reduce the bacterial plaque and/or bacteria present in the buccal cavity, ... | 07/11/2006 |
| 7037476 | Process for preparing amorphous silica from kimberlite tailing A new process is described for the preparation of free flowing hydrated amorphous silica from kimberlite tailing—a waste in diamond mining. The process comprises treating of kimberlite with acid, further reacting it with alkali solution to obtain soluble metal sil... | 05/02/2006 |
| 6719881 | Acid colloid in a microparticle system used in papermaking A microparticle system for use as a retention and drainage aid in the production of alkaline and acid paper products comprises a HMW flocculent polymer (6), an acid colloid (7), and a coagulant or a MMW flooculant (5). The acid colloid (7... | 04/13/2004 |
| 6702888 | Process for the preparation of precipitated silica, new precipitated silicas containing aluminum and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has an excellent dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substanti... | 03/09/2004 |
| 6673738 | Photocatalytic active carbon, colored photocatalytic active carbon, coloring active carbon, and deodorant and adsorption product using them A photocatalytic active carbon capable of demonstrating a stable deodorizing and adsorbing ability for a prolonged period of time is produced by depositing a coating of a photocatalyst on the surface of the active carbon by means of vapor deposition. Colo... | 01/06/2004 |
| 6638354 | Precipitated silicas, silica gels with and free of deposited carbon from caustic biomass ash solutions and processes Disclosed are amorphous precipitated silicas, silica gels, and amorphous carbons derived from biomass and methods of producing them with and without adhered or deposited amorphous carbons produced by acidifying a caustic silicate solution produced by caus... | 10/28/2003 |
| 6534176 | Scaly silica particles and hardenable composition containing them Scaly silica particles having a laminated structure, consisting essentially of secondary particles of foliar silica, each formed by a plurality of flaky primary particles of scaly silica which are overlaid one on another and aligned face-to-face in parall... | 03/18/2003 |
| 6375735 | Precipitated silicas, silica gels with and free of deposited carbon from caustic biomass ash solutions and processes Disclosed are amorphous precipitated silicas, silica gels, and amorphous carbons derived from biomass and methods of producing them with and without adhered or deposited amorphous carbons produced by acidifying a caustic silicate solution produced by caus... | 04/23/2002 |
| 6221149 | Process for the preparation of precipitated silica, new precipitated silicas containing aluminium and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has a very good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantia... | 04/24/2001 |
| 6171384 | High surface area silicate pigment and method An amorphous silicate pigment having a pore volume of at least about 4.0 ml/g as measured by mercury intrusion, a BET surface area of at least about 300 m2 /g, and an Al2 O3 content of about 2.0-10.0 wt % is provided. The ... | 01/09/2001 |
| 6146454 | Process for the precipitated silica new precipitated silicas containing zinc and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has a good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantially s... | 11/14/2000 |
| 6143066 | Process for the preparation of precipitated silica, new precipitated silicas containing zinc and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has a good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantially s... | 11/07/2000 |
| 6136740 | Porous inorganic particulate material A method of producing a porous inorganic particulate material which comprises treating a particulate aluminosilicate material with a leaching agent which chemically reacts with or solubilizes aluminum and thereby leaches aluminum from the aluminosilicate ... | 10/24/2000 |
| 6077341 | Silica-metal oxide particulate composite and method for producing silica agglomerates to be used for the composite A silica-metal oxide particulate composite comprising silica agglomerates having voids formed by random stacking of scaly silica primary particles, and metal oxide particulates supported on the surfaces, and the inner surfaces in the voids, of the silica ... | 06/20/2000 |
| 5964937 | Amorphous silicas An amorphous silica having an RDA value of between 30 and 70, an oil absorption capacity of between 100 and 155 cc/100 g and a moisture loss of less than 7% w/w, can be incorporated at a 10% to 25% loading into a transparent toothpaste having a refractive... | 10/12/1999 |
| 5958127 | Process for the preparation of precipitated silica, new precipitated silicas containing zinc and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has a good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantially s... | 09/28/1999 |
| 5935543 | Amorphous precipitated silica Amorphous precipitated silica which may be used to form battery separators of very low specific resistance is characterized by (a) a CTAB surface area in the range of from 140 to 185 m2 /g; (b) a DBP oil absorption in the range of from 210 to 3... | 08/10/1999 |
| 5891235 | Additive for resins, process for its preparation and olefin resin composition using this additive An additive for resins, a process for preparing amorphous definite particles used as an inorganic additive, and an olefin resin composition blended with the additive, and an agricultural film blended with the additive and a lithium-aluminum composite hydr... | 04/06/1999 |
| 5876494 | Process for the preparation of precipitated silica, new percipitated silicas containing aluminum and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has a very good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantia... | 03/02/1999 |
| 5846311 | Process for the preparation of precipitated silica, new precipitated silicas containing zinc and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has a good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantially s... | 12/08/1998 |
| 5827363 | Structure precipitated silicates and silicas, production and use in ink jet printing A method for preparing precipitated silicates and silicas having good high shear rheology in high solids aqueous slurries. Destructuring of aluminum silicate and silica via dry milling results in decreasing DBP oil absorption. The destructured materials a... | 10/27/1998 |
| 5800608 | Process for the preparation of precipitated silica, new precipitated silicas containing aluminum and their use for the reinforcement of elastomers The invention relates to a new process for the preparation of precipitated silica which has an excellent dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substanti... | 09/01/1998 |
| 5747003 | Amorphous precipitated silica abrasive A statistically large population of particles of amorphous precipitated silica comprising pigmentary phase particles and glassy phase particles and having a glassy phase fraction in the range of from 0.3 to 30 area percent is useful as an abrasive for den... | 05/05/1998 |
| 5738718 | Zinc oxide-containing spherical silica and process for its production A process for producing zinc oxide-containing spherical silica, which comprises emulsifying, in an organic solvent containing a surfactant, a dispersion having zinc oxide with a particle size of from 0.005 to 0.5 μm dispersed in an aqueous alkali metal s... | 04/14/1998 |
| 5705137 | Precipitated silicas, a process for their preparation and their use in vulcanizable rubber mixtures Precipitated silicas, characterized in that they have a CTAB surface area (in accordance with ASTM D 3765-92) of 200 to 400 m2 /g, a DBP index (in accordance with ASTM D 2414) between 230 and 380 ml/100 g as powder and 180-250 g/100 g as granul... | 01/06/1998 |
| 5660622 | Coating for ink jet recording sheets A coating composition for ink jet recording sheets, which includes a combination of hydrated amorphous synthetic silica, a synthetic binder, a cationic agent, a leveling-flow modifier, a dispersing agent, an optical brightener, and the remainder being wat... | 08/26/1997 |
| 5647903 | Microporous high structure precipitated silicas and methods Precipitated silicas having wet cake moisture values in excess of 85%, BET surface areas of 600-700 m2 /g, oil absorption values of 50 to 60 cc/100 g, total intruded volume of about 1.2 to 0.8 cc/g, and a median pore radius of 50 Å to 20 Å ar... | 07/15/1997 |
| 5616316 | Dentifrice-compatible silica particulates Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment, silica particulates have a unique surface chemistry as to be at least 50% compatible with zinc valu... | 04/01/1997 |
| 5614176 | Dentifrice-compatible silica particulates Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment, silica particulates have a unique surface chemistry as to be at least 50% compatible with zinc valu... | 03/25/1997 |
| 5614177 | Dentifrice-compatible silica particulates Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment, silica particulates have a unique surface chemistry as to be at least 50% compatible with zinc valu... | 03/25/1997 |
| 5612020 | Dentifrice-compatible silica particulates Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment, silica particulates have a unique surface chemistry, as to be at least 50% compatible with zinc val... | 03/18/1997 |
| 5605569 | Precipitated silica having high sodium sulfate content Particles comprising particulate amorphous precipitated silica in association with from 5 to 10 percent by weight sodium sulfate and less than 10 percent by weight water, wherein the percentages are based on the weight of the silica, the sodium sulfate, a... | 02/25/1997 |
| 5591256 | High performance synthetic alkali metal alumino-silicate, methods and uses, compositions and high solids reaction methods of their preparation Sodium alumino-silicates are produced by silicate/clay reactions under hydrothermal conditions with increased solids during processing while still producing structural materials characterized by low oil absorption values, high total pore volume and increa... | 01/07/1997 |
| 5342598 | Precipitated silica particulates having controlled porosity Precipitated silica particulates having a BET specific surface ranging from 20 to 300 m2 /g, a CTAB specific surface ranging from 10 to 200 m2 /g, an oil uptake (DBP) ranging from 80 to 400 cm3 /100 g, a pore volume rangin... | 08/30/1994 |
| 5340393 | Process for preparing silica coated inorganic particles An improved process for preparing non-agglomerated water insoluble inorganic particles having a dense amorphous silica coating by using a dispersion aid.... | 08/23/1994 |
| 5316576 | High performance pigments of low oil absorption: preparation, properties and end-use applications Sodium Aluminosilicates (SAMS) are produced by silicate/clay reactions under hydrothermal conditions, the SAMS being characterized by low oil absorption values and high total pore volumes. The SAMS products are useful as coating pigments for paper, paper ... | 05/31/1994 |
