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7615206 |
Methods of fabricating nanoscale-to-microscale structures
Methods for the production of shaped nanoscale-to-microscale structures, wherein a nanoscale-to-microscale template is provided having an original chemical composition and an original shape, and...
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7608234 |
Precipitated silicas with particular pore size distribution
Precipitated silicas useful, for example, as fillers in elastomer mixtures or vulcanizates have a particularly broad pore size distribution of the pores with a pore diameter smaller than that of...
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7572424 |
Self-assembly of nanoporous silica fibers of uniform shape
This disclosure describes a self-assembly templating of a cationic surfactant in the presence of a silica precursor that is free of an excessive variability of the assembled shapes and has a yield...
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7566433 |
Precipitated silicas with a particular pore size distribution
Precipitated silicas which have a broad pore size distribution of the pores with a pore diameter smaller than that of the maximum of the derivative of the pore volume distribution function are...
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7524478 |
Low water uptake silicas
The invention concerns a method for preparing low water uptake precipitated silicas, comprising successive steps which consist in: (a) producing an initial starter including a silicate, the...
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7442356 |
Process for producing inorganic spheres
To provide a process for producing inorganic spheres having a substantially uniform particle size with high productivity. In a process for producing inorganic spheres, which comprises a step of...
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7378076 |
Process for production of macrostructures of a microporous material
The invention involves a process for production of macrostructures of a microporous material. The process is characterized by the fact that seeds formed in or introduced by ion exchange or...
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7378072 |
Method for the preparation of aerogels
A method for the preparation of aerogels that involves the exchange of the liquid present in the aquagel with xenon and the subsequent extraction thereof.
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7335717 |
Methods, compositions, and biomimetic catalysts for the synthesis of silica, polysilsequioxanes, polysiloxanes, non-silicon metalloid-oxygen networks, polymetallo-oxanes, and their organic or hydrido conjugates and derivatives
The in vitro polymerization of silica, silicone, non-silicon metalloid-oxane and metallo-oxane polymer networks, by combining a catalyst and a substrate to polymerize the substrate to form silica,...
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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...
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7306788 |
High-cleaning/moderate abrasive silica materials and dentifrice containing such materials
Unique abrasive and/or thickening materials that are in situ generated compositions of precipitated silicas and silica gels are provided. Such compositions exhibit different beneficial...
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7303742 |
Viscosity-modifying silica materials that exhibit low cleaning and abrasive levels and dentifrices thereof
Unique abrasive and/or thickening materials that are in situ generated compositions of precipitated silicas and silica gels are provided. Such compositions exhibit different beneficial...
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7270803 |
High-cleaning, low abrasion, high brightness silica materials for dentrifices
Unique abrasive materials that are in situ generated compositions of precipitated silicas and silica gels are provided. Such compositions exhibit different beneficial, particularly simultaneously...
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7267814 |
High-cleaning/low abrasive silica and materials and dentifrice containing such materials
Unique abrasive and/or thickening materials that are in situ generated compositions of precipitated silicas and silica gels are provided. Such compositions exhibit different beneficial...
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7255852 |
Precipitated silica product, dentifrices containing same, and processes
Precipitated silica comprising porous silica particles having a cumulative surface area for all pores having diameters greater than 500 Å of less than 8 m 2 /g, as measured by mercury intrusion,...
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7204969 |
High-structure precipitated silicas
A precipitated silica having the following physico-chemical characteristics:
pH (5% in water) (ISO 787-9) 3–8 BET surface area (DIN 66131) (m 2 /g) 400–600 DBP absorption value (DIN 53601,...
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7192461 |
High concentration silica slurry
A high concentration silica slurry can be used for polishing of substrates, such as semiconductor materials. The slurry contains a silica powder dispersed in an solvent. The silica slurry has a...
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7150862 |
Method of manufacturing powder
A method of manufacturing a powder, by which it is possible to adjust the strength of the obtained powder is provided. The manufacturing method of a powder involves a step of preparing a slurry...
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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...
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7070749 |
Doped precipitated silica
Foreign-atom-doped precipitated silicas having a BET surface area of more than 300 m 2 /g and a maximum surface concentration of the foreign atoms of 0.05 mmol/m 2 , to a process for preparing them...
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7070748 |
Non-porous spherical silica and method for production thereof
Non-porous spherical silica having a mean particle diameter of 0.1–20 μm and satisfying the following conditions:
(a) a maximum particle diameter is 4 times the mean particle diameter or less;...
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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,...
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7037475 |
Precipitated silica particles for cat litter
The invention pertains to precipitated silica particles having edged surfaces and a length: width: depth ratio of 1:1:1 to 3:3–1:1 with the length being 0.25 to 15 mm, an absorbing capacity PV...
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7018596 |
Mesoporous silica, process for the preparation of the same, and use thereof
Accordingly, the invention provides: (1) mesoporous silica characterized by having an average pore diameter in the mesopore region of from 1.5 to 10 nm, a nitrogen adsorption specific surface area...
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7015271 |
Hydrophobic particulate inorganic oxides and polymeric compositions containing same
Described are hydrophobic particulate inorganic oxides useful for reinforcing polymeric composition, e.g., rubber. The materials are characterized by: (a) the substantial absence of functional...
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7008617 |
Precipitated silicas
An abrasive, amorphous precipitated silica is provided that provides excellent abrasive performance, but also has a relatively high degree of transmittance, and an index of refraction that is...
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6949234 |
Wet abatement system for waste SiH4
A new method of silane abatement is achieved. The novel silane abatement system comprises a water-filled chamber within an outer chamber. An air intake is located in one upper portion of said outer...
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6946119 |
Precipitated silica product with low surface area, dentifrices containing same, and processes
Precipitated silica product having low surface area and enhanced flavor compatibility. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium...
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6946109 |
Ultra-stable lamellar mesoporous silica compositions and process for the preparation thereof
Novel lamellar mesoporous silica compositions which can contain functional inorganic elements and organic functional groups as part of the lamellar silica framework structure are described. The...
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6946010 |
Method for making abrasive compositions and products thereof
Method of making abrasive compositions comprised of water-insoluble abrasive polishing agents suspended in an aqueous medium in combination, which avoids the need and associated cost of dry milling...
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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...
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6902715 |
Precipitated silicas having a narrow particle size distribution
The present invention provides silica particles, which include the following physical properties: BET surface area: 100-700 m 2 /g; DBP absorption: 100-500 g/100 g; tamped density: 100-250 g/l;...
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6896876 |
High cleaning silica gel dental abrasive, dentifrices prepared therefrom, and a method for preparing the dental abrasive
A silica gel abrasive having good cleaning and low abrasion is prepared by combining at least two silica gels before adjusting the pH of the abrasive to a pH in the range of 3-6. One of the gels is...
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6869595 |
Abrasive compositions for clear toothpaste
A transparent dentifrice is provided that has excellent abrasive performance. The dentifrice comprises from about 10 wt % to about 13 wt % water, and an abrasive, low-structure, precipitated silica...
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6843974 |
Method for extracting silica from herbaceous plants
A method for extracting silica from herbaceous plant capable of extracting high purity amorphous silica from seed shell of various herbaceous plants is provided. The method includes carbonizing a...
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6800267 |
Doped precipitated silica
Aluminum-doped precipitated silicas having a BET surface area of more than 300 m 2 /g and aluminum distributed uniformly in the silica particles are prepared by sequentially heating a mixture of...
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6800260 |
Processes for treating iron-containing waste streams
Processes for treating iron containing waste streams are provided. According to these processes, metal-containing compounds, particularly iron oxides are produced. These methods may, for example,...
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6780393 |
Method of producing fine particles of metal oxide
A method of producing fine particles of an oxide of a metal, comprising the steps of: preparing an acidic solution which contains ions of the metal; precipitating fine particles of a hydroxide of...
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6761867 |
Concentrated suspension of precipitation silica, processes for its preparation and uses of this suspension
The invention relates to an aqueous suspension of precipitated silica, characterized in that its solids content is between 10 and 40% by weight, its viscosity is lower than 4×10 −2 Pa.s at a...
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6726889 |
Production of zinc oxide from acid soluble ore using precipitation method
The present invention relates to an apparatus and a process for producing zinc oxide from an acid soluble zinc-bearing material. The process according to the present invention comprises the steps...
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6716408 |
Procedure for preparing silica from calcium silicate
This invention concerns a procedure for preparing amorphous silica from calcium silicate and CO 2 , with formation and separation of precipitate CaCO 3 .
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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...
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6699808 |
High-solids SiO2 dispersions, process for producing them, and their use
Extremely high solids content silica dispersions are useful for forming green bodies of near net shape as compared to the shape of the bodies after sintering. The green bodies are particularly...
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6692715 |
Silica nanofibers and method for preparing them
Disclosed are novel silica gel nanofibers having an outer diameter lower than 100 nm, a length of up to 1 cm, a specific surface area of from 600 to 1000 m 2 /g and pore diameters of from 2 to 10...
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6685907 |
Process for producing silica particles suitable for use as filler for paper
The present invention relates to a process for easily and efficiently producing silica particles having a narrow particle size distribution and a high porosity from inexpensive starting materials...
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6680040 |
Sol having fine particles dispersed and method for preparing
The porous composite oxide particle is coated with a porous silica-based inorganic oxide layer, and also a substrate has a coating film with the fine particles thereon, which has a low refractive...
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6670438 |
Methods, compositions, and biomimetic catalysts for in vitro synthesis of silica, polysilsequioxane, polysiloxane, and polymetallo-oxanes
Methods, compositions, and biomimetic catalysts, such as silicateins and block copolypeptides, used to catalyze and spatially direct the polycondensation of silicon alkoxides, metal alkoxides, and...
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6669748 |
Dispersion liquid of silica particles for polishing, method of producing the same, and polishing agent
The present invention provides a dispersion liquid of silica particles for polishing with a low content of Na ions and also with a content of ions other than Na ions in a prespecified range. This...
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6663963 |
Very high structure, highly absorptive hybrid silica and methods for making same
Very high structure, hybrid amorphous silica products (geltates) having very high absorptivity, in which the hybrid silica product has a % carrying capacity DBP value greater than 76.0 and a...
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6645471 |
Composite abrasive material for oral compositions, and methods of making and using same
A composition of matter comprising particles of silica, where the silica particles have surfaces at which condensed phosphate is retained, and a production methodology therefor. Oral compositions...
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