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7595350 |
Ultraporous sol gel monoliths
Ultraporous sol gel monoliths and methods for preparing the same are provided, having superior flow characteristics for chromatography and analytical chemistry applications. The methods for forming...
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7560408 |
Catalytically active amorphous porous solid and process for its preparation
Amorphous porous solid of an acidic nature, with a controlled pore size, essentially consisting of a mixed oxide of silicon, aluminum and phosphorous, having a surface area of at least 200 m 2 /g,...
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7504084 |
High velocity, low pressure process for making silica gels and microgels
This invention relates to a process for converting silica to polysilicate gels or hydrogels by combining an aqueous silica source with a CO 2 feed stream as the gel initiator, whereby the reaction...
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7439272 |
Ultraporous sol gel monoliths
Ultraporous sol gel monoliths and methods for preparing the same are provided, having superior flow characteristics for chromatography and analytical chemistry applications. The methods for forming...
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RE40140 |
Polymerization catalyst used for producing polyolefins that have excellent combined properties
The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises:
a) preparation of a finely divided silica xerogel, b) loading of the xerogel...
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7265158 |
Non-metal aerogel materials and detectors, liquid and gas absorbing objects, and optical devices comprising same
New aerogels are disclosed which comprise silica and at least one organic polymer having polar functional groups. Also disclosed are methods for making such aerogels and for making them as...
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7176245 |
Block copolymer processing for mesostructured inorganic oxide materials
Mesoscopically ordered, hydrothermally stable metal oxide-block copolymer composite or mesoporous materials are described herein that are formed by using amphiphilic block polymers which act as...
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7163358 |
Injection grouting
The invention relates to the use of a composition for injection grouting obtainable by mixing an alkali metal silicate or an organic silicate, colloidal silica particles, and at least one gelling...
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7125912 |
Doped sol-gel materials and method of manufacture utilizing reduced mixing temperatures
A method of preparing a solution for forming a doped gel monolith includes providing a first substance including a metal alkoxide. The method further includes providing a second substance including...
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7026362 |
Sol-gel process utilizing reduced mixing temperatures
A method of forming a gel monolith includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the...
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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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6890873 |
Glass prepared from pyrogenically prepared silicon dioxide
Pyrogenically prepared silicon dioxide with the following physicochemical properties:
1. Average particle size (D 50 value) D 50 ≧150 nm (dynamic light scattering, 30 wt %) 2. Viscosity...
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6869256 |
Sealing composition and its use
A method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about...
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6812259 |
Hydroetching of high surface area ceramics using moist supercritical fluids
Aerogels having a high density of hydroxyl groups and a more uniform pore size with fewer bottlenecks are described. The aerogel is exposed to a mixture of a supercritical fluid and water,...
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6764539 |
Hardenable composition with high storage stability containing scaly silica particles and process for its production
A process for producing a hardenable composition with high storage stability containing scaly silica particles which consist essentially of foliar secondary silica particles and have a laminated...
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6670402 |
Rapid aerogel production process
Methods of more rapidly producing aerogel products by means of a rapid solvent exchange of solvent inside wet gels with supercritical CO 2 by injecting supercritical, rather than liquid, CO 2 ...
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6592991 |
Block of copolymer phases as templates for structured organic-inorganic hybrid materials
A process is described for preparing structured organic-inorganic hybrid materials, using an amphiphilic block copolymer as template.
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6528441 |
Hydrogen storage composition and method
A hydrogen storage composition based on a metal hydride dispersed in an aerogel prepared by a sol-gel process. The starting material for the aerogel is an organometallic compound, including the...
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6492014 |
Mesoporous composite gels an aerogels
A composite gel or aerogel is formed by commingling a particulate guest (such as a colloidal or dispersed (i.e., non-colloidal) solid or a powder) with a sol which is either about to gel or in...
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6451862 |
Process for producing a spherical silica gel
A process for producing a spherical silica gel, which comprises supplying a liquid mixture of an alkali silicate solution and an acid solution to a spraying apparatus, spraying the liquid mixture...
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6436439 |
Gel formulation
The present invention provides a gel formulation comprising the components: a. an agrochemical (such as a herbicide, insecticide, fungicide, adjuvant, synergist or penetrant); b. an inorganic...
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6383466 |
Method of dehydroxylating a hydroxylated material and method of making a mesoporous film
The present invention is a method of dehydroxylating a silica surface that is hydroxylated having the steps of exposing the silica surface separately to a silicon organic compound and a...
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6376250 |
Composition and probe for detection of water
A visual indicating paste composition for detecting of aqueous solutions in hydrocarbons by changes in color. The paste is utilized by placing on a probe and inserting the probe in a storage device...
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6365638 |
Process for preparation of hydrophilic or partially hydrophilic inorganic aerogels
Process for preparation of hydrophilic or partially hydrophilic inorganic aerogels. The invention relates to a process for the preparation of hydrophilic or partially hydrophilic inorganic...
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6315971 |
Process for producing low density gel compositions
Disclosed are processes for producing gel composition which may be utilized to produce low density gel compositions without the need for supercritical drying, thermal treatment or surface...
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6204217 |
Process for the preparation of micro-mesoporous gel
Process for the preparation of a micro-mesoporous gel consisting of a silica matrix in which one or more metal oxides are possibly dispersed comprising: (a) subjecting to hydrolysis and...
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6172120 |
Process for producing low density gel compositions
Processes for producing gel compositions comprising: esterifying a portion of the surface of a gel composition sufficient to produce a gel composition having a rod density of less than or equal to...
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6110439 |
Dry silica gel and process of preparation
A wet silica gel can be prepared by a process comprising the steps of contacting a stable, aqueous, fluid, silica system having a pH greater than 7.5 with an ion exchange resin which removes metal...
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6103004 |
Matting agent based on aggregated silica
The invention relates to an aggregated silica gel which has been produced from silica gel particles having a particle size of 1 to 20μ, a surface of 200 to 1000 m 2 /g and a specific pore volume...
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6060523 |
Continuous process for preparing microgels
Silica deposits formed during a continuous process for preparing polysilicate microgel are removed and purged form the process by elastically deforming the vessel walls, reducing plugging.
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6001270 |
Sticky high water content gels for extinguishers
Sticky high water content gelled fire extinguisher compositions hold the antage of providing a high water content, slightly viscous (sticky) gel with flow properties similar to water. The ability...
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5965482 |
Composition for absorbing hydrogen from gas mixtures
A hydrogen storage composition is provided which defines a physical sol-gel matrix having an average pore size of less than 3.5 angstroms which effectively excludes gaseous metal hydride poisons...
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5958115 |
Corrosion-inhibiting composite material
The invention relates to a corrosion-inhibiting material comprising a composite containing a metal oxide gel, where necessary modified by an organic polymer, and one or more corrosion inhibitors,...
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5935895 |
Heterogeneous catalysts
A silica-titania mixed oxide catalyst and its method of manufacture is disclosed. Such catalysts can be used especially to catalyze the epoxidation of olefinically unsaturated compounds with...
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5919726 |
Method for producing photocatalyst material
A primary object of the present invention is to easily and securely fix a photocatalyst to a substrate. According to the invention, there is provided a process for preparing a photocatalyst...
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5888425 |
Process for the preparation of modified aerogels, and their use
The invention relates to a process for the production of modified SiO 2 aerogels in which a) a silicatic lyogel is prepared, b) if desired, the lyogel prepared in step a) is subjected to a...
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5866027 |
Process for producing fiber-reinforced xerogels and their use
The invention relates to a process for producing modified, fiber-reinforced xerogels having porosities greater than 60% and xerogel matrix densities below 0.6 g/cm 3 and to their use as thermal...
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5861110 |
Silica having high specific surface area and a narrow pore distribution
A method for production of high specific surface area silica gel by hydrolysis of silicon tetrahalide, wherein a solution of silicon tetrahalide in a non-reactive solvent such as alcohol is mixed...
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5843335 |
Dilatancy liquid
A dilatancy liquid is a sol under a low shear stress and a gel under a high shear stress, and includes inorganic particles having a roundness of 1.1 or less, and a particle diameter of from 0.05 to...
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5824526 |
Doped sol-gel glasses for obtaining chemical interactions
A sol-gel glass doped with one or more reagent that provides chemical interactions with diffusible solutes or components in an adjacent liquid or gas phase. The reagent(s), the solutes or the...
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5762829 |
Wet silica gels for aerogel and xerogel thermal insulation and processes for the wet gels
A wet silica gel can be prepared by a process comprising the steps of contacting a stable, aqueous, fluid, silica system having a pH greater than 7.5 with an ion exchange resin which removes metal...
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5601749 |
Stabilised gel system and production thereof
A stabilized gel system for supporting finely divided particulate matter in suspension comprises a hydrosol of silicic acid stabilized by entanglement with micelles of a tenside. Such a stabilized...
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5503820 |
Method for preparing low-concentration polysilicate microgels
An improved method for preparing low-concentration polysilicate microgels from a water soluble silicate and a strong acid in which the silicate and acid are mixed at a rate to produce a Reynolds...
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5500402 |
Method for the manufacture of a contact body for the exchange of moisture or heat
A method for treating a contact body for the exchange of heat or moisture comprises impregnating a contact body with waterglass and treating the impregnated body in acidic and basic environments to...
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5470802 |
Method of making a semiconductor device using a low dielectric constant material
This invention provides a process for making a semiconductor device with reduced capacitance between adjacent conductors. This process can include applying a solution between conductors 24, and...
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5468558 |
Process for preparing fracture-resistant sol/gel particles
A process for preparing fracture-resistant sol/gel particles which contain silicon dioxide, in which a highly disperse filler is added to the aqueous alkali metal silicate solution and/or the...
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5419888 |
Low temperature method of making very high structure silica
Precipitated silica gels having high surface areas and low oil absorption values are produced by a low temperature synthesis precipitation process. The precipitated silicas have unique flatting...
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5409683 |
Method for producing metal oxide aerogels
A two-step hydrolysis-condensation method was developed to form metal oxide aerogels of any density, including densities of less than 0.003g/cm 3 and greater than 0.27g/cm 3 . High purity metal...
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5395805 |
Method for making monolithic metal oxide aerogels
Transparent, monolithic metal oxide aerogels of varying densities are produced using a method in which a metal alkoxide solution and a catalyst solution are prepared separately and reacted. The...
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5381149 |
Broadband absorbers of electromagnetic radiation based on aerogel materials, and method of making the same
An inhomogeneous broadband absorber of electromagnetic energy constructed from an aerogel-lossy dielectric composite, where the concentration of the lossy dielectric increase across its thickness...
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