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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,...
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,...
6620458 Method to produce alumina aerogels having porosities greater than 80 percent  
A two-step method for producing monolithic alumina aerogels having porosities of greater than 80 percent. Very strong, very low density alumina aerogel monoliths are prepared using the two-step...
6376560 Ink follower for water-base ballpoint pens and method of manufacturing the same  
This invention relates to ink follower for a water-base ballpoint pen with its bubbles removed, time-dependent stability, less oil separation, and greatly reduced lot-to-lot viscosity difference...
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...
6224846 Method for making modified boehmite alumina  
A process for making a modified boehmite alumina comprising reacting at elevated temperatures a boehmite alumina with a compound having the formula: X(SO 3 M) n wherein X is an organic moiety, M...
6090857 Foam control agent for paints and coatings  
This invention relates to a foam control agent which comprises the reaction product prepared by reacting: (a) a hydrocarbon carrier; (b) a precipitated amorphous silicate; (c) a refractory clay;...
6017968 Shear thinnable organic compositions thickened with alumina  
A thickened, shear thinnable composition comprising a water-miscible organic liquid, alumina, water and an effective amount of a gelling agent that will flocculate or gel the alumina to the desired...
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...
5439851 Process for coating ceramic powder with alumina by sol-gel process and improved densification  
The sol-gel process for forming dense alumina based cermics or dense ceramics with alumina as a sintering additive, the process comprising the steps of: preparing polymeric alumina sol by...
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...
5316695 Use of polymeric catalyst in synthesis of sol-gel derived ceramic materials  
Polymeric catalysts (e.g., polymeric acid catalysts such as poly(styrene)sulfonic acid) can be used in the synthesis of sol-gel derived ceramic materials from metal alkoxides, for example,...
5304364 Method for preparing spherical inorganic oxide-based materials having monomodal particle size distribution  
A method for preparing inorganic oxide-based materials of spherical form with substantially monomodal distribution, consisting of forming a sol of at least one of the inorganic oxides of interest,...
5250476 Ceramic binder and use thereof  
Ceramic binder for forming and processing ceramic ware, comprising a sol-gel of a mixture of highly charged metal hydroxy cations and one or more low charged metal hydroxy cations, which are able...
5160455 Fabrication of homogenous sol-gel derived multiphase materials using gelling control agents  
A method of preparing a composite of a metal oxide matrix with reinforcement particles distributed therein in gel form, by preparing a sol of a metal oxide of Al 2 O 3 , SiO 2 , MgO, ZrO 2 , Y 2 ...
5104636 Method of making aluminum oxide precursors  
Aluminum oxide ceramic composite articles having high flexural and tensile strength are produced by introducing a liquid aluminum oxide precursor material into a ceramic reinforcement fabric,...
5084209 Layered mixed metal hydroxides made in non-aqueous media  
Crystalline layered mixed metal hydroxides (LMMHs) which are substantially free of unbound water and which conform substantially to the general formula Li m D d T(OH) (3+m+d), where m...
5045514 Sol-gel method for making composite mullite/cordierite ceramics  
A method for making composite mullite/cordierite ceramics comprises the steps of: preparing a mullite-intensive sol by mixing alumina and silica sols together at an Al 2 O 3 /SiO 2 molar...
5034360 Process for the production of a ceramic polycrystalline abrasive  
A process for the production of a ceramic polycrystalline abrasive by the sol/gel method is characterized in that an intermediate containing aluminium hydroxide is mixed, dried, calcined and...
4978410 Method for joining of prefired or fired ceramics using sol gels  
A method of repairing a defect in or joining fired or unfired ceramic bodies by using a paste composed of a wet undried metal oxide gel consisting of Al 2 O 3 , SiO 2 , MgO, ZrO 2 , Y 2 O 3 , and...
4975203 Sodium borohydride/sodium aluminate  
An aqueous solution for removing metals from waste water contains sodium borohydride, sodium aluminate and sodium hydroxide.
4965228 Gelation of aluminum solutions using magnesium oxide  
A process is described for making shaped aggregates by mixing the material to be shaped with an aluminum solution and magnesium oxide. The magnesium oxide provides a delayed but strong gelating...
4952539 Method for the manufacture of transparent aluminum oxide ceramic  
A method is disclosed for manufacturing transparent aluminum oxide ceramic articles by sintering dry-pressed acid-containing aluminum oxide monohydrate in vacuo or in hydrogen. The method includes...
4946820 Preparation and use of tin (IV) oxide dispersion  
A tin(IV) oxide dispersion is prepared by peptising metastannic acid with amine peptising agent such as n-butylamine or cyclohexylamine. The dispesion may be a sol or an intermediate convertible to...
4927560 Method for production of inorganic minute globular particles  
A method for the production of inorganic minute globular particles, which comprises forming a W/O type sol emulsion by mixing at least one metal oxide-containing sol selected from the group...
4894357 Process for adjusting the structural and/or surface character of oxides  
A process for adjusting at least one of the structural and surface characteristics of an oxide material, e.g. SiO 2 or Al 2 O 3 , by dehydration of a water-containing oxide gel under...
4888033 Method of manufacturing permeable mineral membranes  
The invention relates to a method of manufacturing permeable mineral membranes. The method of the invention is characterized in that a thin layer of gel of peptised hydroxide of at least aluminum...
4861410 Method of joining metal oxide containing ceramic bodies  
A method of repairing or joining a metal oxide, such as Al 2 O 3 , containing ceramic bodies, fired or unfired by preparing a sol from a precursor of the metal oxide, mixing with a gelling agent,...
4769351 Hydrothermal process for preparing zirconia-alumina base ultra-fine powders of high purity  
A process for preparing a zirconia-alumina base composite ultra-fine powder is described, including the steps of: mixing an aluminum salt or an alumina hydrate with an aqueous zirconium oxychloride...
4757036 Microcrystalline transition metal oxide spinel articles  
Homogeneous, nonporous ceramic fibers containing at least one magnetically-unaligned, microcrystaline transition metal oxide spinel phase. The ceramic fibers may be used in polymeric, ceramic and...
4666614 Dispersible alpha alumina monohydrate  
An alpha alumina monohydrate, AlO(OH), powder is produced which is capable of readily dispersing in aqueous solutions to yield a shear-rate thinning mixture. The alpha alumina monohydrate is made...
4622167 Low viscosity aluminum hydroxy carbonate gel process  
Process and system for the preparation of a low viscosity Aluminum Hydroxy Carbonate Gel having viscosity-resistant properties and a predetermined alkali ion content, comprising reacting under...
4584108 Dispersible alpha alumina monohydrate having increased viscosifying properties  
An alpha alumina monohydrate, AlO(OH), gel is produced which is capable of readily dispersing in aqueous solutions to yield a shear-rate thinning mixture. The alpha alumina monohydrate is made by...
4581164 Gel drying via treatment with organic liquid below gas stream  
The present invention relates to the treatment of gel materials to remove water therefrom. The invention provides a process for removing water from a gel material by contacting the gel material...
4574003 Process for improved densification of sol-gel produced alumina-based ceramics  
The sol-gel process for forming dense, alumina-base ceramics, the process comprising 1. preparing a dispersion of aluminum oxide monohydrate containing a precursor of a modifying additive in the...
4545924 Production of a magnesium chloride gel system useful in ceramics and fiber production  
A method of preparing a magnesium and aluminum complex containing about 98 weight percent Al 2 O 3 and about 2 weight percent MgO, which complex can be employed to produce ceramics and drawn fibers.
4537700 Organic gels  
Organic gels are described which comprise (a) a nonpolar, liquid, organic solvent and (b) a gelling amount of a mixture of (1) an alkyl oleyl phosphate and (2) an alkali metal aluminate. The gels...
4500444 Process for preparing basic aluminum carbonate gels substantially free from foreign anions and fibrous colloidal alumina monohydrate of a boehmite crystal lattice structure  
A process is provided for preparing basic aluminum carbonate gels substantially free from foreign anions at a pH within the range from about 5.5 to about 7.0, according to the reactants used, and...
4495087 Preparation of aluminum hydroxycarbonate gels by a continuous process  
Aluminum hydroxycarbonate gel is precipitated under highly homogeneous conditions by continuously introducing an aluminum salt solution and an alkaline-reacting carbonate and bicarbonate solution...
4472512 Treatment of materials  
The present invention relates to the treatment of gel materials to remove water therefrom. The invention provides a process for removing water from a gel material by contacting the gel material...
4431550 Drilling fluid viscosifier  
An aqueous aluminum hydroxide is produced by reacting an acid and a base reactant, where at least one reactant has aluminum, in the presence of a hydroxy acid or a salt of this hydroxy acid. The...
4389385 Production of porous gels and ceramic materials  
The invention relates to gels produced by dispersing solid primary particles of an inorganic substance in a liquid to form a sol containing colloidal particles which are aggregates of the primary...
4297325 Method of producing pseudoboehmite from aluminum salt solutions  
The production process for pseudoboehmite from leach liquors produced in the acid treatment of clays, which liquors contain Fe and alkaline earth ions.
4266978 Synthesis of mixed oxide composition  
A non-aqueous gel of at least two metal oxides which is a precursor for glassy amorphous or crystalline mixed oxides is produced by reacting an alkoxide of one metal and a halide of another metal...
4234432 Powder dissemination composition  
A composition of matter for use with disseminating apparatus comprising powder having at least a bimodal particle size distribution, a gelled liquid, the powder being substantially insoluble in the...
4157382 Process for preparing low soda pseudoboehmite gel  
A low soda pseudoboehmite gel is provided by reacting a NaAlO 2 solution with a NaHCO 3 solution having a concentration of less than 75 grams/liter and preferably less than 50 grams/liter. The...
4152289 Gelling of organic liquids  
The reaction product of a hydroxy ether and a pentavalent phosphorus compound with a short chain and/or long chain alcohol can be employed to gel organic liquids by mixing the reaction product with...
4131545 Water treatment  
Phosphate containing basic aluminum solutions are provided by reaction aluminum sulphate solution with phosphoric acid, adding chloride, basifying by precipitation of calcium sulphate from solution...
4105579 Process for producing pharmaceutical grade aluminum hydroxide gels  
A process for producing aluminum hydroxide gels substantially free of sodium ions involves a heterogeneous reaction between an aqueous solution of a water soluble aluminum salt and an aqueous...
4038207 Stabilized hydrocarbon gels and a method for their preparation  
Hydrocarbon gels formed from liquid hydrocarbons with pseudo double salts of alkyl acid orthophosphoric acids as gelling agents are made stable to the presence of excess caustic materials by the...
Matches 1 - 50 out of 70 1 2 >