Hollow, Foam, Cellular Or Porous Material Containing Patents (Class 106/605)
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Patent number: 11717879Abstract: The present invention relates to the use of closed-pore microspheres of expanded perlite as a filler for producing moldings for the foundry industry, to a composition for producing moldings for the foundry industry, comprising closed-pore microspheres of expanded perlite as a filler, and a binder, the binder being selected from the group consisting of water glass, phenol-formaldehyde resins, two-component systems comprising as reactants a polyisocyanate and a polyol component containing free hydroxyl groups (OH groups), and starch, and also to moldings for the foundry industry and to a process for producing a molding for the foundry industry.Type: GrantFiled: April 10, 2017Date of Patent: August 8, 2023Assignee: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNGInventors: Sandra Lehmann, Klaus Riemann, Nils Zimmer, Hermann Lieber, Jürgen Hübert
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Patent number: 10710481Abstract: A method of manufacturing a cover element for a motor vehicle comprises placing, in a mold, a stack formed at least of a covering material made of textile, of leather, of skin, or of a synthetic material, and of a foam layer at the rear surface of the covering material, the foam layer integrating reinforcing elements.Type: GrantFiled: May 26, 2016Date of Patent: July 14, 2020Assignee: FAURECIA SIEGES D'AUTOMOBILEInventors: Fabrice Etienne, Julie Thomas, Didier Fouinat
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Patent number: 10280770Abstract: In some examples, an article may include a substrate and a coating on the substrate. The substrate may include a superalloy, a ceramic, or a ceramic matrix composite. The coating may include a layer comprising a matrix material and a plurality of nanoparticles. The matrix material may include at least one of silica, zirconia, alumina, titania, or chromia, and the plurality of nanoparticles may include nanoparticles including at least one of yttria, zirconia, alumina, or chromia. In some examples, an average diameter of the nanoparticles is less than about 400 nm.Type: GrantFiled: October 9, 2015Date of Patent: May 7, 2019Assignees: Rolls-Royce Corporation, Purdue Research FoundationInventors: Sungbo Shim, Sean E. Landwehr, Stephanie Gong, Jeffrey P. Youngblood, Rodney Trice
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Patent number: 9440283Abstract: A process for hot shaping a workpiece of metal or an intermetallic compound at a temperature of higher than about 1000° C. The method comprises at least partially coating the surface of the workpiece with a coating agent that comprises an oxide phase and an additive and/or an adhesive before processing the workpiece into a formed body or a rolling product. A coating agent for reducing the heat emission from the workpiece comprises a predominant amount of an oxide phase. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: GrantFiled: August 31, 2012Date of Patent: September 13, 2016Assignee: BOEHLER SCHMIEDETECHNIK GmbH & CO. KGInventors: Karin Rockenschaub, Wilfried Marketz
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Patent number: 9139475Abstract: A grout for filing a micro-trench formed in the ground includes comprises Class F fly ash in a range of approximately 0 to 30% by weight of grout and cement kiln dust in a range of approximately 50 to 90% by weight of grout.Type: GrantFiled: April 12, 2012Date of Patent: September 22, 2015Inventor: Jeffrey J. Konczak
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Publication number: 20150128831Abstract: Microspheres comprising a plurality of hollow microspheres, each of the plurality of hollow microspheres comprising a plurality of glass walls, and a plurality of hollow spaces, wherein the plurality of glass walls enclosing at least one of the plurality of hollow spaces, wherein the plurality of glass walls comprising a second glass, wherein the second glass comprising a processed first glass melt, wherein the processed first glass melt comprising a melt of a batch and a plurality of redox active group components capable of providing at least one of a plurality of redox reactions and a plurality of events in the second glass.Type: ApplicationFiled: January 17, 2015Publication date: May 14, 2015Inventors: Hamid Hojaji, Laura Gabriela Kocs
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Patent number: 8915997Abstract: A concrete mix for producing freeze-thaw durable concrete having enhanced strength properties, like compressive strength, abrasion resistance, impact strength, toughness, is disclosed. The novel concrete mix contains deformable solid elements in place of 4-8% entrained air for good durability of concrete under freeze-thaw cycles.Type: GrantFiled: November 12, 2013Date of Patent: December 23, 2014Assignee: NAVS, LLCInventor: Ashok H. Shah
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Patent number: 8552111Abstract: A composition comprises a polyvinylchloride homopolymer, a biodegradable plasticizer and either a swelling agent or a carbohydrate coupled to the polyvinylchloride homopolymer or a combination thereof. The composition may further comprise a blowing agent. A coated fabric comprises a textile substrate and a biodegradable coating at least partially coating the textile substrate, wherein the biodegradable coating degrades at least 60% after 28 days under the ASTM D584 standard. A method of making a biodegradable coating comprises providing a polymer and blending a biodegradable plasticizer with the polymer to form a blend. A method of making a coated textile comprises providing a textile and a composition comprising a polymer, a biodegradable plasticizer, and at least one other component; applying the composition to the textile; and curing the composition, thereby making a coated textile.Type: GrantFiled: January 11, 2008Date of Patent: October 8, 2013Assignee: Kittrich CorporationInventors: Robert F. Weber, Michael Zagryn
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Patent number: 8414699Abstract: Low density additives and methods of making said additives for composite materials are provided. The low density additives have at least a partial or complete water repellant property that reduces moisture migration, absorption, and retention within a composite material in which it is incorporated into. Active sites are engineered onto the surface of the low density additives to enhance bonding of the additives within a composite matrix. Reduced water movement and enhanced bonding lead to an increased strength and durability performance for a composite material comprising such additives. Composite materials incorporating one or more engineered low density additives as also provided, such composite materials having enhanced strength and durability. Such composite materials may be made from a Hatschek process. The composite materials may be further used as interior and exterior building products.Type: GrantFiled: April 16, 2008Date of Patent: April 9, 2013Assignee: James Hardie Technology LimitedInventors: Hamid Hojaji, Caidian Luo, Liyan Ma
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Patent number: 8021476Abstract: The invention relates to gypsum mortar with expanded vermiculite added with citric acid and tartaric acid and to the method for obtaining same, containing the following elements in the following proportions: between 40% and 70% calcium sulphate; between 40% and 70% laminated expanded vermiculite; between 0.05% and 0.3% citric acid; between 0.05% and 1% tartaric acid; between 0.01% and 0.5% sodium or potassium citrate; and water q.s.p. 1000 ml, in which, for surface coating, the added vermiculite is obtained following treatment in a vertical furnace, which provides improved grain size and sheets of exfoliated vermiculite without water or air, and the mortar is provided with citric acid and tartaric acid, copper sulphate and sodium or potassium scitrate, with the water being added before the mixture is produced.Type: GrantFiled: March 13, 2009Date of Patent: September 20, 2011Assignee: Fire Test, S.L.Inventors: Barbara Roman Aleman, Pilar Torres Zacarias
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Patent number: 7744689Abstract: An alkali resistant glass composition having improved durability to withstand highly alkali environments at elevated temperatures, such as curing of cementitious products in an autoclave, is conveniently formed from economical and abundant materials. The glass composition includes increased levels of calcium and iron, and relatively low levels of alkali metals, as compared to many other alkali resistant glass products, and comprises essentially of, by weight, >35% Si2O3, 1-25% CaO, 1-15% Fe2O3, 1-10% R2O, and an amount of Al2O3 such that the ratio of Si2O3:Al2O3 is greater than or equal to 1. Alkali resistance can be improved by forming a passivity layer on the surface of glass articles by treating the articles hydrothermally in a basic environment. Optionally zirconia and/or titania may be added to the composition to further improve alkali resistance.Type: GrantFiled: February 24, 2006Date of Patent: June 29, 2010Assignee: James Hardie Technology LimitedInventors: Hamid Hojaji, David Leslie Melmeth
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Publication number: 20100053974Abstract: In one aspect of embodiments of the invention is provided a heat-resistant cementitious composition comprising a binder comprising potassium silicate, and at least one filler material, the filler material substantially non-reactive with said potassium silicate; wherein the cementitious composition, in the presence of water, has a ramp flow value of less than about 10 in the substantial absence of vibration; and wherein the cementitious composition, in the presence of water, has both thixotropic flow properties and pseudoplastic flow properties. Also provided are lamp assemblies employing such cementitious compositions.Type: ApplicationFiled: September 4, 2008Publication date: March 4, 2010Inventor: Vaughn C. STERLING
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Patent number: 7547651Abstract: The invented compositions for metal cladding of components in demanding applications can include one or more of liquid and/or colloidal sodium, potassium and/or lithium silicate, clay and/or clays, a compound of hollow micro-spheres (e.g. naturally occurring and nearly ubiquitous perlite and/or a synthetic hollow micro-sphere equivalent) and/or alumina or one or more flexible or malleable or resiliently deformable, impact-resistant materials such as plastomers, elastomers and/or other plastic, rubber, plastic-like or rubber-like materials; a wetting agent consisting of one or more of water or water and ethanol for fast drying under proper safety and venting conditions; and one or more surfactants and/or dispersants.Type: GrantFiled: September 28, 2007Date of Patent: June 16, 2009Assignee: Applied Technology Laboratories LLCInventor: Gary Wilson
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Publication number: 20090126930Abstract: The invention provides a cement composition resistant to carbon dioxide including a hollow element for trapping carbonation products. The hollow element can be an additional component added to the cement composition, this component is made of hollow spherical or quasi spherical particles as cenospheres, sodium-calcium-borosilicate glass, silica-alumina microspheres, or a combination thereof. Or the hollow element is a spherical or quasi spherical void made in the set cement, for example by foaming the cement composition with a gas as air, nitrogen or a combination thereof. Use of such cement composition in carbon dioxide application is disclosed. Additionally, a method to cement a part of a borehole in presence with carbon dioxide is disclosed, a method to repair a part of a borehole in presence with carbon dioxide is disclosed using the above cement composition and a method to plug a part of a borehole in presence with carbon dioxide is disclosed.Type: ApplicationFiled: September 25, 2006Publication date: May 21, 2009Inventors: Veronique Barlet-Gouedard, Simon James, Bruno Drochon, Bernard Piot, Caritey Jean-Philippe
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Patent number: 7341620Abstract: A sound-absorbing and fire-insulating wall covering includes, a cured mixture of: (i) 5-20% by weight mineralized wood fibre; (ii) 20-60%/by weight sand with an SiO2 content of less than 5% by weight and a greywacke content of at least 30% by weight; and (iii) 20-50% by weight cement. A method of preparing a fire-insulating wall covering includes a step of mixing, relative to the cured weight, 5-20% by weight mineralized wood fibre, 30-60% by weight sand with an SiO2 content smaller than 5% by weight and a greywacke content of at least 30% by weight, and 20-50% by weight cement. Then 10-30% by weight water is added. Thereafter the mixture is cured to form the fire-insulating wall covering.Type: GrantFiled: April 8, 2004Date of Patent: March 11, 2008Assignee: Durisol International Corp.Inventors: Reinhard Walter, Arend Johan Veldhoen
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Patent number: 6818055Abstract: A porous silicate granular material, especially as aggregate for the production of construction materials such as lightweight concrete, mortar or heat-insulating plaster containing glass and a glassy crystalline component comprising 45 to 85 wt. % SiO2, 5 to 20 wt. % alkali oxide, 5 to 30 wt. % alkaline earth oxide and 2 to 30 wt. % of other oxides such as Al2 O3 and/or Fe2O3. The glassy crystalline component accounts for 5 to 75 wt. % of the granular material. The glassy crystalline component of the granular material is a sinter reaction product. There is also a method of producing such a granular material in which the mixture is agglomerated at a temperature of 20° C. to 150° C. at normal pressure with the water vapour partial pressure being adjusted, selected or controlled as a function of time-temperature and carbon dioxide being excluded or admitted, whereby the admission of carbon dioxide is controlled by adjusting or selecting the carbon dioxide partial pressure.Type: GrantFiled: August 16, 2001Date of Patent: November 16, 2004Assignee: Mattig & Lindner GmbHInventor: Siegfried Schelinski
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Patent number: 6783704Abstract: Process for the production of hydrophobic layers on optical substrates which have an alkaline earth metal fluoride or alkali metal fluoride layer as the outermost layer or consist of alkaline earth metal fluorides or alkali metal fluorides, by thermal vapor deposition with polyfluorohydrocarbons in a high vacuum.Type: GrantFiled: November 14, 2001Date of Patent: August 31, 2004Assignee: Merck Patent GmbHInventors: Uwe Anthes, Reiner Dombrowski, Martin Friz
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Publication number: 20040163571Abstract: A fire resistant wood door is formed from an opposing pair of rails interconnected by a upper and lower stiles forming an outer frame. A wood laminate core is provided within the outer frame and covered by outer sheathing. The wood laminate core is formed from first and second panels and a heat barrier layer. Each of the first and second panels is formed from an organic material and provided with a plurality of grooves on one surface. The heat barrier layer is in the form of a casting applied to the grooved surface of at least one, and preferably both, of the first and second panels. The panels are then joined together with the heat barrier layer sandwiched therebetween. When joined with the outer frame and sheathing, a wood door is formed having a fire rating of at least 45 minutes.Type: ApplicationFiled: October 20, 2003Publication date: August 26, 2004Applicant: DORSET FIREDOOR SYSTEMS, INC.Inventor: Andre Fortin
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Publication number: 20040011255Abstract: A ceramic material, includes SiO2 and Na2O and/or K2O. The material is characterized by a porosity of over 60% and by pores, more than 70% of which have a pore size ranging between 0.1 and 15 &mgr;m. The ceramic material can be used as filtering material, for water storage and as adsorbent material.Type: ApplicationFiled: November 25, 2002Publication date: January 22, 2004Inventor: Antonio Giangrasso
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Patent number: 6554893Abstract: The present invention describes an improved building material composition, useful for example as a fire door core and to improved methods of making this composition. The building material of the present invention consists essentially of expanded perlite, a fireproof binder, clay or vermiculite, and optionally diatomaceous earth, one or more viscosity-enhancing components, reinforcement fibers, and a plasticizer or mixtures thereof. The method of making this improved composition is a semi-continuous batch press method wherein at least the expanded perlite, fireproof binder, and clay or vermiculite are mixed; the mixture compressed in a mold, and the compressed mixture dried.Type: GrantFiled: November 2, 2001Date of Patent: April 29, 2003Assignee: Georgia-Pacific CorporationInventor: Donald F. Klus
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Patent number: 6541108Abstract: The process of the invention characterized in that to 100 parts by weight of a silicate powder having 2000-8000 m2/g specific surface, 1-10 parts by weight of gas-forming material with particle size of 10-100 &mgr;m and 0.5-15 parts by weight of montmorillonite, 0.5-2 parts by weight of alkali hydrogen phosphate or alkali dihydrogen phosphate or a mixture of alkali metal phosphate and sodium silicate in form of aqueous solution, 0.01-5 parts by weight of rare earth metal oxide or a mixture of such oxides were added, then the mixture obtained is homogenized, pre-dried, coated with 1-5 parts by weight of titanium oxide and/or titanium oxide hydroxide and/or aluminum oxide hydroxide, then subjected to heat treatment at 720-1000° C., and the mixture obtained is molded. The subject of the invention: also the product of the above process.Type: GrantFiled: July 10, 2000Date of Patent: April 1, 2003Inventors: László Hoffmann, István {haeck over (J)}alsowszky, Emma Hoffmann, Rita Rostás, Jenó Fehér, Zsolt Fejér
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Patent number: 6409817Abstract: Disclosed is a rigid fine-celled light-weight foam composition and a method of producing it which has improved retention of liquids by absorption/adsorption which improves the thermal insulation and fire retardant properties of the fine-celled foam particularly suited for use in double walled tanks and hollow canopies, building panels, profiles, and the like.Type: GrantFiled: May 8, 2000Date of Patent: June 25, 2002Assignee: Agritec, Inc.Inventor: Douglas K. Stephens
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Patent number: 6355098Abstract: The present light-weight material contains expanded perlite, alkali silicates and optionally added hardeners for aqueous alkali silicates, wherein said expanded perlite has a grain of from 0.8 to 6 mm, a hydrophobizing agent is present, the bulk densities are in the range of from 60 to 500 kg/m3.Type: GrantFiled: September 13, 1999Date of Patent: March 12, 2002Assignee: Marmorit GmbHInventor: Alfred Pfemeter
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Patent number: 6340389Abstract: The present invention describes improved fire door cores and improved methods of making these fire door cores. The fire door core of the present invention comprises expanded perlite, a fireproof binder, fire clay or vermiculite, and optionally one or more viscosity-enhancing components, fiberglass, or both. The method of making this improved fire door core is a semi-continuous batch press method wherein the expanded perlite, an fireproof binder, fire clay or vermiculite are mixed; the mixture compressed in a mold, and the compressed mixture dried.Type: GrantFiled: December 18, 2000Date of Patent: January 22, 2002Assignee: G-P Gypsum CorporationInventor: Donald F. Klus
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Patent number: 6074475Abstract: A low-density, syntactic foam material is provided according to the invention. The syntactic foam material is prepared by mixing together a plurality of microballoons and a finely divided solid thermosetting resin. Fibers are also preferably incorporated into the material during processing to impart specific properties. The mixture is heated to allow the thermosetting resin to flow and wet the microballoons in the mixture. The mixture is then cured to set and crosslink the thermosetting resin to form the syntactic foam of the invention. The syntactic foam material has highly uniform properties and can be used in aerospace applications.Type: GrantFiled: February 10, 1999Date of Patent: June 13, 2000Assignee: McDonnell Douglas CorporationInventors: Edward S. Harrison, Donald J. Bridges, James L. Melquist
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Patent number: 6068795Abstract: A fire resistant, acoustic and thermally insulative product consists essentially of a silica-containing refractory solid in finely divided or powdered particulate form, present in an amount sufficient to intumesce to a predetermined volume when exposed to a predetermined amount of heat. The product further consists essentially of an aqueous sodium silicate solution present in an amount sufficient to act as an agent in producing a foaming process whereby the finely divided solid is so bonded as to form a cellular structure. The product produces substantially no toxic fumes or gases upon exposure to excessive heat or fire.Type: GrantFiled: December 8, 1997Date of Patent: May 30, 2000Inventor: Hilal Semhere
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Patent number: 6059036Abstract: The present invention provides methods and compositions for sealing subterranean zones. The methods of the invention basically comprise the steps of preparing a sealing composition comprised of an aqueous alkali metal silicate solution, a gelling agent and a delayed acid activator for causing the composition to set into a rigid mass, placing the sealing composition in said subterranean zone and allowing the sealing composition to set into a rigid sealing mass therein.Type: GrantFiled: November 26, 1997Date of Patent: May 9, 2000Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Lewis R. Norman, David D. Onan, Bobby J. King, Roger S. Cromwell
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Patent number: 6033591Abstract: A thermal insulating material with a cellular structure is disclosed which comprises a bound SiO.sub.2 -containing material converted to at least 90% into a tobermorite phase. The SiO.sub.2 -containing material is diatomaceous earth, the density of the thermal insulating material is less than 150 kg/m.sup.3 and the thermal conductivity (declared value)is less than 0.05 (W/m.sup..multidot. K).Type: GrantFiled: February 25, 1998Date of Patent: March 7, 2000Assignee: E. Schwenk Dammtechnik GmbH & Co.Inventor: Bassilios Zlatanof
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Patent number: 5944888Abstract: The present invention is directed to an insulating coating for refractory articles, adapted to be applied by spraying or gunning, which is easy to apply, cost effective, eliminates the potential health hazards associated with ceramic fiber paper, and which imparts sufficient insulating properties to the refractory article in high temperature environments. More particularly, the present invention is directed to an insulating coating and a method of preparing the insulating coating wherein the coating composition is comprised of about 25% to about 75% by weight of lightweight aggregate, up to about 25% to about 75% by weight of binder, up to 0.5% by weight of organic fiber, up to about 15% by weight of an additive to improve green strength, and up to about 5% by weight of a foaming agent.Type: GrantFiled: January 9, 1998Date of Patent: August 31, 1999Assignee: North American Refractories Co.Inventors: Regis M. Perich, Harold D. Prior, Jr., Daniel F. Fura
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Patent number: 5833728Abstract: Provided is a method for the efficient preparation of fine hollow spherical glassy bodies having a high strength and excellent whiteness from a volcanic vitreous deposit as the starting material. The fine hollow spherical glassy bodies as desired can be prepared by dispersing 100 parts by weight of a powder of a volcanic vitreous deposit in an aqueous solution containing 1 to 10 parts by weight of aluminum sulfate, adding an aqueous alkaline solution to this liquid suspension to cause deposition of an alumina hydrate onto the surface of the particles of said powder and washing and drying of the solid material followed by a heat treatment for 1 second to 1 minute at a temperature of 900.degree. to 1100.degree. C.Type: GrantFiled: March 27, 1997Date of Patent: November 10, 1998Assignee: Agency of Industrial Science and TechnologyInventors: Kunio Kimura, Hiroyuki Nakamura, Yukiyoshi Tamoto, Junichi Kimoto, Hiromi Okada
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Patent number: 5783297Abstract: Materials with exceptional shock attenuating properties are chemically bonded ceramics having densities that range from 30 to 160 lb/cubic foot (0.48 to 2.56 g/cc) and porosities of 20% to 80%. The materials are chemically bonded ceramic composites based on Portland cement, silica fume, various hollow fillers, and may include a dispersing agent, any of a variety of fibers and water.Type: GrantFiled: August 16, 1995Date of Patent: July 21, 1998Assignee: Cemcom CorporationInventors: Sean Wise, Claudio J. Herzfeld
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Patent number: 5714000Abstract: Disclosed is a rigid fine-celled foam composition and a method of producing it. The foam composition is nontoxic, environmentally friendly, has improved absorption/adsorption and retention of liquids, is not as hard as prior art foams, does not include polymerization by-products detrimental to flower and plant life, and is a foamed mixture of a caustic silicate solution derived from the caustic digestion of rice hull ash having diffused activated carbon particles from thermal pyrolysis of rice hulls rather than from commercial sodium silicate solutions. Valuable by-products of commodity grade are obtained including activated carbon and sodium fluoride.Type: GrantFiled: July 10, 1996Date of Patent: February 3, 1998Assignee: Agritec, Inc.Inventors: Clyde W. Wellen, Douglas K. Stephens, Greg R. Wellen
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Patent number: 5635292Abstract: Incorporation of solid removable aggregates into powdered cement which later completely dissolve, evaporate, volatilize, or melt leaving voids in the cement composition is discussed. Cementitious articles are prepared by manipulating powdered hydraulic cement or cement paste compositions into mechanically self-supporting structures of a predetermined configuration and thereafter hydrating the hydraulic cement compositions without mechanical mixing of the cement and water.Type: GrantFiled: October 18, 1994Date of Patent: June 3, 1997Assignee: E. Khashoggi IndustriesInventors: Hamlin M. Jennings, Simon K. Hodson
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Patent number: 5614255Abstract: Proposed is an efficient method for the preparation of vitreous hollow microspheres from particles of a vitreous volcanic deposit by a heat treatment to effect expansion of the particles by foaming. The inventive method comprises a step, prior to the heat treatment for expansion of the particles, in which the starting particles are dispersed in an aqueous medium containing aluminum sulfate and urea each in a specified concentration followed by a heating treatment of the dispersion so as to deposit a coating layer of aluminum hydroxide on the particle surface so that the efficiency of foaming can be greatly improved without the disadvantage of particle agglomeration.Type: GrantFiled: July 9, 1996Date of Patent: March 25, 1997Assignee: Japan as represented by Director General of Agency of Industrial Science and TechnologyInventors: Kunio Kimura, Hiroyuki Nakamura, Yukiyoshi Tamoto, Junichi Kimoto, Hiromi Okada
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Patent number: 5611853Abstract: A composition of matter comprising naturally-occurring humic allophane soil or Ando soil as an essential ingredient admixed with a binder material, said composition is useful in preparation of solid media effective as deodorant, absorbent, adsorbent and the like for treating fluids, in particular contaminated water and malodor air.Type: GrantFiled: September 6, 1995Date of Patent: March 18, 1997Assignees: Haruo Morimoto, Katusi Maeno, Takahiro YamadaInventor: Haruo Morimoto
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Patent number: 5562767Abstract: Manufactured aggregates and/or composites having incorporated therein an asphaltic oxidation product.Type: GrantFiled: November 27, 1995Date of Patent: October 8, 1996Assignee: Air Products and Chemicals, Inc.Inventors: F. MacGregor Miller, Timothy J. Roth, William R. Welliver, Alexander Mishulovich, Mark S. Hudson
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Patent number: 5503931Abstract: An improved moisture absorbing amorphous silicate material formed by the steps of: parboiling rice under 22 psi and at a temperature above 212 degrees F. to force bran into the rice grain and dissolve cellulose from the rice hulls creating voids in the rice hulls; drying the parboiled rice; milling the parboiled rice into grain, bran, and broken rice hulls; separating the broken rice hulls from the grain and bran; and burning the broken rice hulls at high temperatures to produce a skeletal residue of amorphous silicate material. Several uses of the amorphous silicate material are disclosed.Type: GrantFiled: August 10, 1994Date of Patent: April 2, 1996Inventor: Elstun F. Goodman, Sr.
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Patent number: 5393341Abstract: A method for the production of structural foam from air, water, foaming agent and an aggregate, particularly cement foam, for which cement slurry is blown under high pressure into a mixing chamber and mixed with a foaming agent and the mixture immediately thereafter is conveyed to an expansion nozzle, into which metered amounts of compressed air are blown.Type: GrantFiled: December 23, 1993Date of Patent: February 28, 1995Assignee: RUME Maschinenbau GmbHInventors: Dieter Meier, Heinz Ruppert
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Patent number: 5352288Abstract: A low cost cement composition that can be admixed with water and hydrothermally closed cured to give acid-resistant products of high compressive strength consisting essentially of, in parts by weight, 1 to 1.5 parts of a calcium oxide material containing at least about 60% CaO, 10 to 15 parts of pozzolanic material containing at least about 30% by weight amorphous silica, and 0.025 to 0.075 parts by weight of an alkali metal catalyst and building materials made therefrom as well as the method of making such building materials by closed curing.Type: GrantFiled: June 7, 1993Date of Patent: October 4, 1994Assignee: Dynastone LCInventor: William A. Mallow
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Patent number: 5336645Abstract: A soluble thermally cellulated, ceramic mold member, having gas evolved cells dispersed in a soluble crystalline matrix, the matrix consisting predominantly of at least one crystal phase selected from the group consisting of borates and phosphates of alkali metals, of divalent metals and of aluminum, and boron phosphate, and having at least one solubilizing agent selected from alkali metal compounds, divalent metal compounds and charred acrylic resin. A mixture capable of being thermally foamed to a cellulated body, the mixture consisting essentially of at least one phosphorous-containing compound, at least one boron-containing compound, at least one solubilizing agent selected from the group consisting of alkali metal compounds, divalent metal compounds and acrylic resins, at least one organic binder and a gas-evolving agent.Type: GrantFiled: September 27, 1993Date of Patent: August 9, 1994Assignee: Corning IncorporatedInventor: Hermann L. Rittler
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Patent number: 5298068Abstract: The inorganic foam body consists of an at least partially open-cell foam formed by thermally foaming and hardening a mixture comprising an alkali water glass and a filler from the group of aluminum oxide, silicon dioxide, aluminous cement, crushed rocks, graphite or mixtures thereof. It is produced by heating a mixture comprising an alkali water glass and a filler from the group of aluminum oxide, silicon dioxide, aluminous cement, crushed rocks, graphite with a blowing agent, and preferably azodicarbonamide, at temperatures of at least 180.degree. C., and preferably of from 200.degree. C. to 300.degree. C. The foam body has a bulk density within the range of from 50 to 500 kg/m.sup.3, and preferably of from 50 to 400 kg/m.sup.3.Type: GrantFiled: July 13, 1992Date of Patent: March 29, 1994Inventor: Herbert Giesemann
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Patent number: 5244726Abstract: A self-hardened, high temperature-resistant, foamed composite is described. An alkali metal silicate-based matrix devoid of chemical water has dispersed therein inorganic particulates, organic particulates, or a mixture of inorganic and organic particulates, and is produced at ambient temperature by activating the silicates of an aqueous, air-entrained gel containing matrix-forming silicate, particulates, flyash, surfactant, and a pH-lowering and buffering agent.Type: GrantFiled: August 31, 1992Date of Patent: September 14, 1993Assignee: The HERA CorporationInventors: Bill E. Laney, F. Truman Williams, Ronald L. Rutherford, David T. Bailey
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Patent number: 5242494Abstract: This invention relates to a foamable silicate composition comprising (a) one or more alkali metal silicates, (b) a blowing agent, (c) a hardener which can be an acetate or a formate ester of a di-polyhydric alcohol or a polyoxyalkylene glycol and (d) a surfactant having a hydrophilic-lypophilic balance of at least 8. The formulations are readily produced by mixing the components, are pourable, pumpable and sprayable, and give rise to foams of excellent compressive strength and thermal insulation properties under ambient conditions.Type: GrantFiled: August 5, 1991Date of Patent: September 7, 1993Assignee: British Technology Group Ltd.Inventors: Ian C. Callaghan, Elizabeth C. Cooper, Anne Lepre, Alistair S. Taylor
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Patent number: 5164003Abstract: A silica-based coating for, and a method for coating glass, metal, ceramic, and plastic surfaces by forming single cross-linked O-Si-O polymer chains. The coating generally comprises a binder and a filler. The binder is a mixture of silica-based polymers, colloidal silica, and metal oxide particles in an aqueous suspension. It includes four main ingredients: an alkali metal silicate; silica gel; a cross-linking agent such as methyltrimethoxysilane or tetraethoxysilane; and water. After curing, the binder forms an amorphous layer that binds the fillers to the surface. The protective coating is formed at room temperature, without the addition of energy in any form. The fillers are chosen to provide the coating with mechanical strength, abrasion resistance, and increased corrosion resistance. Fillers may also be chosen to modify the coating's dielectric constant, to improve the coating's surface lubricity, and to alter the coating's thermal coefficient of expansion.Type: GrantFiled: March 28, 1990Date of Patent: November 17, 1992Assignee: Ceram Tech International, Ltd.Inventors: Paul N. Bosco, Terrance Fay
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Patent number: 5160540Abstract: A method for producing a concrete with a controllable density, which at the density of 1200 kg/m.sup.3 has a compression strength of at least 3.5 MPa and after that linearly increases to at least 19 MPa at 2,000 kg/m.sup.3, characterized in mixing a base concrete mixture mainly consisting of cement and water with a porousity mixture mainly consisting of cement, water and a foaming agent so that the foaming agent constitutes at least approximately 5% by volume of the porousity mixture, and that the resultant mixture of the base concrete mixture and the porousity mixture is moulded in a conventional manner.Type: GrantFiled: July 1, 1991Date of Patent: November 3, 1992Assignee: Danes Verkstader ABInventors: Ingemar Johansson, Kjell Svedman
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Patent number: 5143777Abstract: A ceramic material for making ceramic moulds and core for metal casting is described comprising basically granular or bubble refractory material, e.g. alumina or mullite, bound together by hardened ceramic slurry. Moulds for lost wax casting are built-up by dipping a wax pattern in ceramic slurry and then applying granules of bubble alumina in an all over coating. A plurality of such coats may be applied by allowing the slurry to harden between applications. The moulds are more insulating than those using tubular alumina grits, for example, and produce castings with smoother surface finishes.Type: GrantFiled: May 3, 1990Date of Patent: September 1, 1992Assignee: Rolls-Royce plcInventor: David Mills
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Patent number: 5085897Abstract: The use of a liquid mixture of a liquid alkali-metal silicate preferably sodium or potassium silicate and more preferably sodium silicate with an inert mineral filler selected from perilite and vermiculite, suitably in an amount from 5 to 50% by weight and a mineral powder suitably selected from aluminum trihydrate and Wollastonite in an amount such as to intumesce with said silicate and to form a non-porous ceramic coating when subject to fire and suitably in an amount from 2 to 25% by weight for the protection of steel beams and columns against twisting due to fire. The formation of such coating both insulates and protects the steel beam or column from the heat from said fire. Suitably the thickness of the coating is at least two inches and is preferably from 2 to 4 inches to achieve the protection.Type: GrantFiled: April 2, 1990Date of Patent: February 4, 1992Assignee: Radixx/World, Ltd.Inventor: John S. Luckanuck
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Patent number: 5084101Abstract: A composition for the production of an open-pore foam product from essentially inorganic components contains, in addition to known components, a rock-forming solid substance, a curing agent, a foaming additive, and an at least partly alkali-soluble protein to produce open pores. The rock-forming component is a reactive solid substance selected from the group consisting ofI finely dispersed oxide mixture containing amorphous silicon dioxide and aluminium oxide,II vitreous, amorphous electrofilter ash,III milled calcined bauxite,IV electrofilter ash from a brown coal power station,V undissolved amorphous silicon dioxide from an amorphous disperse powder-like, dehydrated or water-containing silicic acid or from high temperature processes (silica fume),VI metakaolin, andVII cement.The curing agent is an alkali metal silicate solution containing 1.2 to 2.5 mols of silicon dixoide per mol of potassium oxide and/or sodium oxide.Type: GrantFiled: August 29, 1990Date of Patent: January 28, 1992Assignee: Huels Troisdorf AGInventors: Hans W. Engels, Karlheinz Neuschaffer
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Patent number: 5082494Abstract: A composition for use in manufacturing fire and heat resistant components, typically by moulding, comprises a mixture of foamed filler, a liquid binder and one or more frits. The composition may itself be moulded to form such components or may be included in other moulding systems to impart fire and heat resistant properties to a moulding.Type: GrantFiled: December 5, 1988Date of Patent: January 21, 1992Assignee: Crompton Design Manufacturing LimitedInventor: Geoffrey Crompton
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Patent number: 5017523Abstract: Ultra-fine hollow glass spheres suitable as a filler in light-weight composite materials for building use and the like can be prepared from a fine powder of volcanic glass even when the starting powder has a particle size as fine as 20 .mu.m or smaller. The inventive method comprises an acid-leaching treatment of the starting powder using hydrochloric or sulfuric acid under hydrothermal conditions at 150.degree.-200.degree. C. to modify the chemical composition in the surface layer of the particles and a subsequent heat treatment of the acid-treated particles at a specified high temperature to effect expansion by the water vapor produced from the structural water in the softened particles. By virtue of the modified composition in the surface layer and in contrast to the prior art method without the acid treatment, a good balance can be obtained between the rate of water vapor release and softening of the particles even when the particle size is extremely small to facilitate expansion of the particles.Type: GrantFiled: March 9, 1990Date of Patent: May 21, 1991Assignee: Japan as represented by Director General of Agency of Industrial Science and TechnologyInventors: Kunio Kimura, Kazuhiko Jinnai, Hiroshi Tateyama