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7022178 |
Binding agent, core sand mixture and a method for producing the same
A binding agent system based on water glass is disclosed, comprising an aqueous alkali silicate solution having the general composition: xSiO 2 ·yM 2 O ·zH 2 O, with M standing for the alkali...
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6881258 |
Mixture for the production of a high-expansion stone die
The present invention refers to a mixture comprising alpha CaSO 4 ×½ H 2 O, CaSO 4 ×2 H 2 O, a combination of a hardening accelerator, a hardening retarder and a setting expansion inhibitor, and...
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6866803 |
Mold for use in slip casting method, and method of manufacturing open porous body for use in mold
A slip casting mold includes a water absorption layer having self water absorption capability and substantial water resistance. With the water saturation percentage of the water absorption layer...
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6784397 |
Mold release and anti-blocking coating for powder-free natural of synthetic rubber articles
The present invention is directed to a release composition for molds and formers used in the production of natural and synthetic latex articles. The release coating contains a water-borne, high Tg...
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6699314 |
Mold releasing agent for centrifugal casting mold
A mold releasing agent suitable for easily casting a cylindrical cast member which is superior in adhesion on cast parts at low cost, is provided. A mold releasing agent for a centrifugal casting...
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6495084 |
Molding facilitator and use thereof
Dispersions of waxes in water are now widely used as molding aids, mold release agents, and the like but often leave troublesome residues that can not be easily washed away with water. This problem...
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6248284 |
Process for preparing particles covered with a layer of water glass and articles comprising such covered particles
The invention relates to a process for preparing free flowing particles covered with a layer of water glass, comprising the steps of: (a) providing a mixture containing particles to be covered,...
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6218461 |
Silicone composition curing at room temperature and the use thereof
A silicone composition curing at room temperature by condensation, which is suitable especially as a dental molding composition. The silicone composition consists of the a) base paste containing a...
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6013125 |
Investment of powders and method for rapid preparation of investment molds
The present invention relates to improved investment powders for use in making improved investment molds for casting metals, and the use of such molds with vacuum and/or either conventional,...
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5884688 |
Methods for fabricating shapes by use of organometallic ceramic precursor binders
This invention relates to the discovery of organometallic ceramic precursor binders used to fabricate shaped bodies by different techniques. Exemplary shape making techniques which utilize...
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5840434 |
Thermal stress relaxation type ceramic coated heat-resistant element and method for producing the same
A ceramic coated heat-resistant element comprises a heat resisting alloy base mainly composed of Ni and/or Co and a heat-resistant coating layer provided on the surface of the base and is...
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5837047 |
Heat curable binder systems and their use
This invention relates to heat cured binder systems comprising as separate Parts: Part I comprising (a) a soluble source of silica, (b) an alcohol, and preferably (c) a surfactant; and Part II...
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5807951 |
Pharmaceutical composition regulating function of a living body
The present invention provides silicate polymers which regulate the function of a living body by restoring and normalizing the lowered cell functions due to diseases. The silicate polymers are...
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5743953 |
Heat curable alumino-silicate binder systems and their use
This invention relates to heat curable alumino-silicate binder systems comprising as three separate parts (1) a soluble source of silica, (2) a caustic solution of an alkali silicate, and (3)...
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5739369 |
Water-soluble surface treating agents
A surface treating agent comprising a reaction product of (A) a fluoroalkyl group-containing alkoxysilane with (B) an amino group-containing alkoxysilane and optionally further with (C) an alkyl...
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5718749 |
Dental gypsum bonded investment composition
A dental gypsum bonded investment composition comprising 100 parts by weight of a mixture comprising (a) α-hemihydrate gypsum as a binder and (b) quartz and/or cristobalite as a refractory...
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5656195 |
Moldings containing silica aerogel particles and their preparation
In moldings which have a density of from 0.1 to 0.4 g/cm 3 and contain silica aerogel particles which have a mean diameter d m of from 0.001 to 8 mm and are bonded to one another by means of at...
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5651816 |
Cement, cement products, molding material, concrete member and a method of producing the same
Cement comprising hydraulic cement and polymer precursor such as alcohol-soluble phenol resin precursor that is substantially anhydrous and generates water by polymerization.
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5611848 |
Process for preparing refractory molded articles and binders therefor
This invention provides a process for preparing a refractory molded article comprising the steps of (a) forming a molded article matrix from an aggregate and the first binder, (b) impregnating the...
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5603759 |
Stable, cement-bonded, overhead sprayed insulating mixes and resultant linings
A pulverulent mix, sprayable when mixed with a liquid for forming a stable, cement-bonded insulating refractory which can be sprayed onto vertical and overhead surfaces without deformation,...
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5470651 |
Mandrel for use in nickel vapor deposition processes and nickel molds made thereform
Mandrels for use in the manufacture of nickel shells by vapour deposition of nickel from gaseous nickel carbonyl. The mandrels comprise a body formed of a composite material of a matrix, for...
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5468285 |
Ceramic core for investment casting and method for preparation of the same
There is disclosed a core mix and a method of fabricating the core for use in investment casting. The core composition comprises an acid soluble borate binder in a high percentage by weight of the...
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5328879 |
Binding and plasticizing agent for preparing carbon-containing, refractory, ceramic materials and material prepared therewith
The present invention pertains to a binding and plasticizing agent for preparing refractory materials, in which the binding agent contains a synthetic resin, a phosphate, and a surface-active agent.
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5296027 |
Single-component alkali metal silicate cement composition
The invention relates to a dry, surfactant-free single-component alkali metal silicate cement composition containing as hardening agent condensed aluminum phosphate and at least one compound from...
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5292693 |
Slurry composition and sintered part prepared therefrom
A sheet-forming slurry composition is composed of zirconia powder, an organic binder, and a solvent. The zirconia powder contains 2 to 10 mol % of yttria in solid solution form and has a BET...
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5279665 |
Inorganic foundry binder systems and their uses
This invention relates to inorganic no-bake foundry binder systems and their uses. The binder systems comprise as separate Part A and Part B components: (A) an aqueous solution of specified...
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5275655 |
Cementitious composition with nonadherent surface
These and other objects are satisfied by the present invention, which as a first aspect provides a cementitious composition with non-stick properties. The composition comprises a calcium aluminate...
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5275648 |
Heat curable organic resin foundry sand binder composition
A heat curable organic sand binder based upon epoxide or epoxide novolac resin and a latent dicyandiamide or imidazole curing agent, with or without an imidazole accelerator, which may be used as a...
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5275114 |
Sodium bentonite clay binder mixture for the metal casting industry
A foundry sand binder composition and method of manufacturing cast metal objects by casting molten metal into a mold cavity formed of sand held in a predetermined mold configuration by a binder...
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5269845 |
Calcium aluminate composition and process for making same
A novel cementitious composition based on calcium aluminate and suitable for use in molds is provided. The composition comprises a calcium aluminate powder base, at least one particulate inorganic...
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5250110 |
Dustfree investment material for accurately fitting cast pieces and method of producing these investment materials
Dustfree investment materials, for the production of accurately fitting cast parts, are described which contain water-soluble phosphates, magnesium oxide and silicon dioxide. The investment...
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5186743 |
Low volatile organic content hybrid silica binder
A low volatile organic content hybrid silica binder, with a total silica content of about 29% to about 42% by weight, suitable for use in the manufacture of zinc-rich primer coating compositions is...
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5183503 |
Method of shaker molding and composition therefor
An improved molding powder which comprises alkali metal alginate, calcium salt, tetrasodium pyrophosphate and filler, the alginate being from Laminaria hyperborea. The mixture sets to form a...
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5180427 |
Fillers for investment and refractory die materials
Phosphate-bonded investments and refractory die materials are provided upon which dental porcelains and/or alloy powders can be sintered. Inorganic fillers are mixed with appropriate binders to...
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5164004 |
High permeability metal casting plaster and method of making same
A high permeability metal casting plaster is used for production of high accuracy simulated castings for prototypes and any other plastermold castings. Methods are provided that create the high...
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5059247 |
Method for the preparation of foundry sand compositions
A foundry sand composition that is self-hardening after a working life of about 10-20 minutes that is composed of a foundry sand, a sodium silicate binder and a specifically defined polyester...
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5028341 |
Well servicing fluid
An additive for well servicing fluids containing a partially hydrolyzed acrylamide for use in downhole environments having a high calcium ion content comprising an alkali metal bicarbonate, a...
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5028270 |
Freeze-stabilized silica sol and its use as liquid for phosphate-based embedding compositions
An aqueous silicic acid sol which is freeze-stabilized and which is useful for the production of phosphate-based embedding compositions used in dental technology, the aqueous silicic acid sol...
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4996084 |
Colloidal silica water based slurry system for investment casting shell backup coats
A water based slurry for use as backup coat on a wax model has colloidal silica and milled zircon as primary ingredients. The slurry is utilized as a backup coat on a wax model used in a lost wax...
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4983218 |
Composition and method for hardening an aqueous alkali metal silicate solution
Aqueous solutions of alkali metal silicate are hardened using blends of alkylene carbonates and aliphatic alcohols such as alkylene diols, polyalkylene glycols, or hydroxyalkyl ethers. The...
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4925492 |
Ceramic core for investment casting and method for preparation
A fired ceramic core for use in aluminum investment casting, which will withstand steam autoclaving and which may be rendered water disruptible; comprising from about 20 to 50% by weight of one or...
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4913840 |
Production of stable anionic sols containing colloidal alumina hydrate
Stable alkaline sols of anionic alumina hydrate may be made by calcining alumina trihydrate and milling the monohydrate produced under alkaline conditions. Alkaline sols containing both anionic...
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4909847 |
Dental investment compositions in low-dusting powdery form
A dental investement composition in the low-dusting powdery form contains (a) a mixture of a soluble phosphate with magnesium oxide or hemihydrate gypsum as a binder, (b) quartz and/or...
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4897294 |
Insulating material containing delaminated vermiculite
An asbestos-free insulating material suitable for use as a header in molten metal casting. The material is made from a dry mixture comprising lime, siliceous component, delaminated vermiculite or...
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4780141 |
Cementitious composite material containing metal fiber
Cementitious composite materials having high strength, vacuum integrity, good thermal properties and low coefficient of thermal expansion are prepared from a mixture of (1) a high strength...
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4769076 |
Binders for manufacture of precision casting molds
Binders for manufacture of precision casting molds are provided, which are highly stable and are advantageous in that these may impart a high strength to the green molds as obtained by forming an...
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4769075 |
Binder for manufacture of precision casting mold
A binder for manufacture of a precision casting mold comprising a transparent solution containing an alkyl orthosilicate or an alkyl polysilicate having a polymerization degree of 2 to 10, and an...
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4715895 |
Method of producing molds for the casting of metal
The present invention relates to the production of molds for the casting of metal. The molds are made of refractory materials bound together by a binding agent on the basis of a partially...
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4703806 |
Ceramic shell mold facecoat and core coating systems for investment casting of reactive metals
An yttria-based slurry comprising a dense grain yttria powder and a non-aqueous-based binder is used as a mold facecoat and corecoat for investment casting of reactive metals such as titanium and...
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4700768 |
Metal casting process using a lost pattern, moulds for performing this process and process for the production of said moulds
There is disclosed a mould for lost pattern casting. The shell of the mould comprises a graphite coating and a hydrocarbon binder. The binder comprises a polyol with at least three alcohol...
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