Starch, Dextran, Cellulose Ether Or Gum Patents (Class 106/730)
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Patent number: 6478868Abstract: The present invention provides improved early-enhanced strength cement compositions and methods. The cement compositions can be utilized in surface construction projects as well as in the construction of oil, gas and water wells. The improved cement compositions of this invention are basically comprised of a hydraulic cement, water present in an amount sufficient to form a slurry and hydrophobic silica powder.Type: GrantFiled: August 26, 1999Date of Patent: November 12, 2002Assignee: Halliburton Energy Services, Inc.Inventors: Baireddy R. Reddy, Ronald J. Crook, Bryan K. Waugh, Russell M. Fitzgerald, Dennis W. Gray, Brent E. Traxel
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Publication number: 20020088183Abstract: A microabrasive tool is formed from a slurry including liquid, abrasive grains, a bonding material, and a polymer—for example, gellan gum. The slurry is cast in a mold, and the polymer is ionically cross-linked. Cross-linking the polymer fixes the structure of the bonding material and the abrasive grains, wherein the abrasive grains are dispersed substantially uniformly within the bonding material. The ionically cross-linked structure of bonding material and abrasive grains can then be fired to form a microabrasive tool.Type: ApplicationFiled: January 16, 2002Publication date: July 11, 2002Applicant: Saint-Gobain Abrasives, Inc.Inventors: Kenneth E. Manwiller, Anne B. Hardy
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Patent number: 6406536Abstract: Described herein is the use of a combination of organic additives that is particularly advantageous for the preparation of cementitious compositions having a high conservation of the degree of white, which contain in mass a photocatalyst that is able to oxidize, in the presence of light, air and ambient humidity, pollutant substances present in the environment, the said photocatalyst being, in particular, titanium dioxide prevalently in the form of anatase. The above combination of additives comprises the following: a melamine resin; a cellulose ether; a polymer chosen from among an ethylene polymer, an acrylic polymer, and a terpolymer comprising as co-monomers at least one ester of acrylic acid with an alcohol and at least one ester of vinyl alcohol with a carboxylic acid, or alternatively, an acrylic, styrene or butadiene latex; and a chemically modified starch.Type: GrantFiled: July 17, 2000Date of Patent: June 18, 2002Assignee: Italcementi S.p.A.Inventors: Luigi Caśsar, Carmine Pepe
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Patent number: 6387171Abstract: Disclosed is a concrete composition that comprises water, a cementitious material, and an aggregate material, the aggregate material comprising a granular starch. In accordance with preferred embodiments of the invention, the granular starch is a washed, pre-swollen starch, and is added to the composition in an amount ranging from about 1% to about 20% by weight of the cementitious material. The starch granules are swollen in the uncured composition but liberate water and shrink to their unswollen size as the concrete cures, thus providing a cured lightweight concrete. Also disclosed is a method for preparing a concrete composition. The disclosed method comprises providing starch granules, mixing the starch granules with water and a cementitious material to form an uncured concrete composition, and subsequently curing the uncured concrete composition thus formed.Type: GrantFiled: May 25, 2000Date of Patent: May 14, 2002Assignee: Grain Processing CorporationInventors: J. Steve Taylor, Harry M. Kennedy
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Patent number: 6383284Abstract: A dry masonry render mixture comprising, in concentrations which can be varied to achieve different finishes, Portland cement, river sand, graded stones, plasterers lime, the ingredients being mixed in the presence of lightweight filaments and silica-based catalyst. The dry render masonry mixture is mixed with a liquid solution of water and a latex polymer of various concentrations to form a slurry. The invention includes several methods of application of varying concentrations of the slurry to obtain different textured finishes.Type: GrantFiled: May 4, 2000Date of Patent: May 7, 2002Inventor: Judith Clare De Loub
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Patent number: 6364945Abstract: Methods and compositions for forming permeable cement sand screens in well bores are provided. The compositions are basically comprised of a hydraulic cement, an acid soluble particulate solid, a liquid hydrocarbon solvent soluble particulate solid, a particulate cross-linked gel containing an internal breaker which after time causes the gel to break into a liquid, water present in an amount sufficient to form a slurry, a gas present in an amount sufficient to form a foam and a mixture of foaming and foamed stabilizing surfactants.Type: GrantFiled: December 13, 2000Date of Patent: April 2, 2002Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy, Bobby J. King, Philip D. Nguyen, David L. Brown
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Patent number: 6309455Abstract: The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer solution such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and mixtures thereof. The solution is wet milled to form an extremely fine particle size distribution of the gum. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications.Type: GrantFiled: August 21, 2000Date of Patent: October 30, 2001Assignee: CP Kelco U.S., Inc.Inventors: Bryan Skaggs, Harold Dial, Walter Rakitsky
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Patent number: 6299679Abstract: The present invention provides a ready-to-use stucco compositions wherein the components in the composition are selected such that the compositions retain certain desired properties over a predetermined time before the stucco sets. The compositions can be prepared at one site and transferred to a job site typically without further modifications. Methods of preparing and using such compositions are also provided.Type: GrantFiled: September 14, 1999Date of Patent: October 9, 2001Assignee: Western Mobile New Mexico, Inc.Inventor: Antony S. Montoya
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Patent number: 6261355Abstract: A binder adjuvant used in engineering includes in aqueous solution, a mixture of a water-soluble cellulose ether and of an antifoaming agent.Type: GrantFiled: November 16, 1998Date of Patent: July 17, 2001Assignees: Abdelmalek LouhibiInventors: Nizar Al Kassem, Haisan Al Rifai
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Patent number: 6257336Abstract: For controlling filtration loss during the installation of climber cement in a well, the procedure entails the addition of a specific quantity of at least one derivative of galactomannan, hydrophilically and hydrophobically modified, a hydrophobically modified hydroxy propyl guar (HMHPG).Type: GrantFiled: March 31, 1998Date of Patent: July 10, 2001Assignees: Institut Francais du Petrole, Societe Lamberti SpAInventors: Annie Audibert, Jean-François Argillier, Ugo Pfeiffer, Guiseppe Molteni
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Patent number: 6221152Abstract: The present invention comprises a stable hydrocolloid welan gum in which a hydrocolloid, preferably welan gum, is uniformly dispersed in a superplasticizer such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and mixtures thereof. This is then dispersed in a rheological control agent which is a microbially-produced cellulose fiber composition. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications, insulation fluids and de-icer compositions.Type: GrantFiled: September 8, 2000Date of Patent: April 24, 2001Assignee: CP Kelco U.S., Inc.Inventors: Harold Dean Dial, Crawford Bryan Skaggs, Walter Gregory Rakitsky
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Patent number: 6217646Abstract: A coating mortar compound for pressure spraying over a surface to be levelled. The mortar compound comprises as active ingredients the following three ingredients: a) hydraulic lime, preferably of moderate hydraulicity; b) Portland cement; c) vinyl acetate dry polymer; and further comprising as filler and the main ingredient in weight of the total compound weight the following single ingredient: d) a mineral filler, preferably silica sand. Upon having been sprayed over a surface to be levelled, the mortar compound remains both permeable to water vapors while enabling scupturing thereof even after partial curing thereof. Various additives may be included to enhance the performance of the composition. These optional additives include: hollow glass or ceramic spheres, a defoaming agent, a water retention agent, a rheological aid, a water repellent agent, a water reducing agent, and an accelerator agent.Type: GrantFiled: April 26, 1999Date of Patent: April 17, 2001Assignee: Daubois Inc.Inventor: Richard Gervais
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Patent number: 6202751Abstract: Methods and compositions for forming permeable cement sand screens in well bores are provided. The compositions are basically comprised of a hydraulic cement, an acid soluble particulate solid, a liquid hydrocarbon solvent soluble particulate solid, a particulate cross-linked gel containing an internal breaker which after time causes the gel to break into a liquid, water present in an amount sufficient to form a slurry, a gas present in an amount sufficient to form a foam and a mixture of foaming and foamed stabilizing surfactants.Type: GrantFiled: July 28, 2000Date of Patent: March 20, 2001Assignee: Halliburton Energy Sevices, Inc.Inventors: Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy, Bobby J. King, Philip D. Nguyen, David L. Brown
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Patent number: 6182758Abstract: Biodegradable dispersing and fluid loss control additives for well cements, well cement compositions including the additives and methods of using the well cement compositions are provided. The well cement compositions are basically comprised of a hydraulic cement, water in an amount sufficient to form a slurry and a dispersing and fluid loss control additive comprised of casein. A second agent which also provides fluid loss control can optionally be included in the additive.Type: GrantFiled: August 30, 1999Date of Patent: February 6, 2001Assignee: Halliburton Energy Services, Inc.Inventor: Jan Pieter Vijn
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Patent number: 6173778Abstract: Storable cement slurries utilize a carrageenan suspending agent to provide stable slurries under conditions of high pH and calcium ion content. These cement slurries may be utilized for, among other things, cementing applications involving oil and gas wells.Type: GrantFiled: May 27, 1998Date of Patent: January 16, 2001Assignee: BJ Services CompanyInventors: Philip J. Rae, Neil Johnston, Gino DiLullo
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Patent number: 6110271Abstract: In accordance with the present invention, a microbial polysaccharide having the features characteristic of S-657 has been found to be effective to improve the rheological properties of a variety of cementitious systems. Thus, the addition of a small, but effective amount of S-657 to such cementitious systems as portland cement, self-leveling grouts, fresh or saltwater oil well cement slurries, microfine cements, and the like, gives rise to substantial improvements in such properties as bleed, flow resistance, fluid loss control, and the like. S-657 addition provides enhanced rheological control in a variety of cementitious systems. In addition, S-657 provides a number of advantages relative to prior art systems, including improved free water and sedimentation control, as well as reduced fines loss during underwater placement.Type: GrantFiled: September 4, 1997Date of Patent: August 29, 2000Assignee: Pharmacia CorporationInventors: Bryan Skaggs, Walter Rakitsky, Alain Phyfferoen
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Patent number: 6106603Abstract: The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer solution such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and solution thereof. The mixture is wet milled to form an extremely fine particle size, from about 3 microns to about 500 microns distribution of the gum. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications.Type: GrantFiled: April 16, 1998Date of Patent: August 22, 2000Assignee: Pharmacia CorporationInventors: Bryan Skaggs, Harold Dial, Walter Rakitsky
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Patent number: 6068697Abstract: A polysaccharide derivative prepared by replacing all or part of the hydroxyl hydrogen atoms of a polysaccharide or polysaccharide derivative by (A) a hydrophobic substituent having a C.sub.8 -C.sub.43 hydrocarbon chain as the partial structure and (B) an ionic hydrophilic substituent having at least one member selected from the group consisting of sulfonic, carboxyl phosphoric, and sulfate groups and salts thereof as the partial structure, wherein the average degree of replacement by the substituent (A) is 0.0001 or above but below 0.001 per constituent monosaccharide residue as determined by Zeisel's method or the diazomethane method and that by the substituent (B) is 0.01 to 2.0 per constituent monosaccharide residue as determined by colloidal titration. This polysaccharide derivative is useful as the admixture for hydraulic materials and can give stable hydraulic compositions excellent in dispersion.Type: GrantFiled: July 14, 1998Date of Patent: May 30, 2000Assignee: Kao CorporationInventors: Hotaka Yamamuro, Takeshi Ihara, Tomohito Kitsuki, Tetsuya Miyajima, Fujio Yamato, Makoto Kohama
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Patent number: 6033469Abstract: Injection medium in the form of a dry mixture for preparing an injection suspension for sealing and/or reducing the penetrability of soils (loose rocks) and/or stone and/or structures against penetration by fluids, especially by water and gases, containing at least one mineral binder, especially a superfine binder, at least one stabilizer, at least one solvent and optionally other customary additives, such as at least one setting accelerator, an injection adjuvant and a water-retention agent, while the stabilizer is at least one organic thickener and the mixture additionally includes at least one essentially inert, superfine filler.Type: GrantFiled: February 18, 1998Date of Patent: March 7, 2000Assignee: Dyckerhuff AGInventors: Horst-Dieter Teichert, Reinhard Umlauf
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Patent number: 5997633Abstract: A composition for and a method of promoting the flow of a concrete slurry through a pump and a conduit is provided. The composition is a dry particulate mixture comprised of a water soluble, inorganic material and a solvatable, organic polymer. The composition, when mixed with a suitable quantity of water, is useful in a method of priming a pump used to pump a concrete slurry. The composition, when mixed with a concrete slurry, is useful to improve the flow of the slurry through a conduit.Type: GrantFiled: September 5, 1997Date of Patent: December 7, 1999Assignee: Fritz Industries, IncInventor: Daniel P. Montgomery
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Patent number: 5972103Abstract: The present invention provides universal well cement additives and methods. The universal well cement additives improve the properties of a well cement slurry and are basically comprised of iron chloride, an alkali or alkaline-earth metal halide, an organic acid and a hydratable polymer.Type: GrantFiled: January 26, 1998Date of Patent: October 26, 1999Assignees: Halliburton Energy Services, Inc., Atlantic Richfield CompanyInventors: Sudhir Mehta, Richard C. Jones, William J. Caveny, Rickey L. Morgan, Dennis W. Gray, Jiten Chatterji
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Patent number: 5968255Abstract: The present invention provides universal well cement additives and methods. The universal well cement additives improve the properties of a well cement slurry and can be comprised of iron chloride, a dispersing agent, an organic acid, a hydratable polymer and an ultra-fine particulate hydraulic cement.Type: GrantFiled: January 12, 1999Date of Patent: October 19, 1999Assignees: Halliburton Energy Services, Inc., Atlantic Richfield CompanyInventors: Sudhir Mehta, Richard R. Jones, William J. Caveny, Rickey L. Morgan, Dennis W. Gray, Jiten Chatterji
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Patent number: 5951752Abstract: An aqueous composition for coloring cement based compositions comprising water, pigment, a suspension enhancing agent and latex polymer solids.Type: GrantFiled: June 5, 1998Date of Patent: September 14, 1999Assignee: C-Cure CorporationInventors: Charles J. Johansen, Jr., Ernest D. Hollas, Robert L. Vecchio, Hani Zoumut
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Patent number: 5880182Abstract: An admixture for decreasing the water demand of cementitious compositions such as concrete consists of(a) from 75-25% by weight of a water-reducing agent whose major component is a polycarboxylate; and(b) from 25-75% by weight of at least one saccharide component selected from hydrogenated saccharides and polyhydric alcohol adducts of saccharides.The saccaride component is preferably a hydrogenated polysaccharide with a molecular weight distribution as follows:(i) 70-30% by weight (on total weight of hydrogenated saccharides) have molecular weights in the range 180-300;(ii) 30-70% by weight have molecular weights of from 300 up to 4,000; and(iii) 30% by weight maximum have molecular weights of 4,000 and over.Type: GrantFiled: February 18, 1997Date of Patent: March 9, 1999Assignee: MBT Holding AGInventors: Yoshikazu Minomiya, Akira Ohta, Minoru Yaguchi
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Patent number: 5749964Abstract: A building material mixture for use in manual plasters, gun plasters and knifing fillers having reduced stickiness comprises at least one inorganic binder and a cellulose ether which has been treated with a hydrophobicizing agent.Type: GrantFiled: November 22, 1996Date of Patent: May 12, 1998Assignee: Hoechst AktiengesellschaftInventor: Heinz-Josef Mann
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Patent number: 5733367Abstract: A cement composition comprising a cement base and hemicellulose. The cement composition produces reduced efforescence and less bleeding. Self-leveling materials containing the cement composition also produce reduced efforescence and less bleeding and exhibit improved surface adhesion strength.Type: GrantFiled: June 27, 1996Date of Patent: March 31, 1998Assignee: Fuji Oil Company, LimitedInventors: Koichi Soeda, Katsuo Hosono, Hiroshi Hayashi, Kazuo Yamada, Makoto Matsuhisa, Satoru Ashiyahara, Hirokazu Maeda, Hitoshi Furuta, Mitsuo Hattori
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Patent number: 5663218Abstract: Process for protecting articles from shock comprising encasing such articles in a plurality of molded blocks of a composition capable of progressively and irreversibly deforming in response to such shocks, said composition comprising cellulosic fibers dispersed in a matrix of at least one non-hydrated hydraulic binder, wherein from 2.5 to 75 parts by weight of the cellulosic fibers are dispersed per 100 parts by weight of said binder, said composition, upon curing and drying, exhibiting a density between 0.15 and 0.60.Type: GrantFiled: July 24, 1996Date of Patent: September 2, 1997Assignee: Lafarge Materiaux de SpecialitesInventor: Jacques Chappuis
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Patent number: 5658380Abstract: An oil and gas well cementing composition and method are shown utilizing hydraulic cement, water a cement hydration retarder and an additive which is effective over a selected time period degrade the retarder. The additive is a controlled release oxidizer which releases nascent oxygen over time to gradually oxidize the cement hydration retarder, thereby providing a single cement slurry design for cementing pipes for oil and gas wells where wide temperature differentials exist between the two ends of the pipe.Type: GrantFiled: February 13, 1996Date of Patent: August 19, 1997Inventor: Robert Lee Dillenbeck, III
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Patent number: 5626954Abstract: Compositions and methods for manufacturing sheets having a hydraulically settable matrix. Suitable compositions are prepared by mixing together a hydraulic binder, water, and appropriate additives (such as aggregates, fibers, and rheology-modifying agents) which impart predetermined properties so that a sheet formed therefrom has the desired performance criteria. The compositions are formed into sheets by first extruding them into a sheet and then calendering the sheet using a set of rollers. The calendered sheets are dried in an accelerated manner to form a substantially hardened sheet. The drying is performed by heated rollers and/or a drying chamber. The hydraulically settable sheets so formed may have properties substantially similar to sheets made from presently used materials like paper, cardboard, polystyrene, or plastic. Such sheets can be rolled, pressed, scored, perforated, folded, and glued. They have especial utility in the mass production of containers, particularly food and beverage containers.Type: GrantFiled: August 3, 1993Date of Patent: May 6, 1997Assignee: E. Khashoggi IndustriesInventors: Per J. Andersen, Simon K. Hodson
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Patent number: 5595598Abstract: Disclosed herein is a met,hod for adjusting the consistency of concrete mix by adding an water-absorbing polymeric material or a thickening agent of carboxymethylcellulose to a fresh concrete mix.Type: GrantFiled: March 22, 1996Date of Patent: January 21, 1997Assignee: Taisei Rotec Co., Ltd.Inventors: Eiichi Yooda, Fumitaka Itoh
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Patent number: 5595595Abstract: The present invention is directed to concrete compositions prepared using firm aqueous gels (aquagels) as all or part of the aggregate in a concrete mix. The concrete sets around the aquagels in the initial set stage. Because the aquagels maintain the pore structure of the concrete while it sets, a concrete product can be obtained that has substantially uniform density regardless of depth. During the curing and/or drying stages, the moisture migrates out of the concrete and the aquagels, and the aquagels dry to a fraction of the size of the original aquagel in the cell or pore in the concrete. This results in cellular, lightweight concrete having reduced density, reduced weight, reduced thermal conductivity, and reduced sound transmission compared to concrete prepared without using aquagels.Type: GrantFiled: August 15, 1995Date of Patent: January 21, 1997Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Gregory M. Glenn
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Patent number: 5573589Abstract: An additive for cementitious compositions comprises at least one sulfated polysaccharide obtained by the sulfation of a polysaccharide, preferably under moderate conditions. The additive enhances the fluidity and workability of cementitious mixes, and gives higher final compressive strength.Type: GrantFiled: March 9, 1995Date of Patent: November 12, 1996Assignee: Sandoz Ltd.Inventors: Yoshio Tanaka, Toshiyuki Uryu, Minoru Yaguchi
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Patent number: 5556460Abstract: A cement admixture composed of a low molecular weight oxyalkylene compound and a comb polymer having carboxylic acid groups and oxyalkylene units therein.Type: GrantFiled: September 18, 1995Date of Patent: September 17, 1996Assignee: W.R. Grace & Co.-Conn.Inventors: Neal S. Berke, Michael P. Dallaire, Ellis M. Gartner, Awdhoot V. Kerkar, Timothy J. Martin
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Patent number: 5547506Abstract: In the method of the invention, a storable hydraulically-active cementitious slurry is made and used to cement within subterranean foundations for oil and gas wells. The slurry is made from hydraulically-active, cementitious material suitable for oil field purposes and can be stored until needed. During storage, the slurry remains liquid. The slurry is activated when needed for cementing. After pumping the activated slurry into the wellbore, the set cement has properties acceptable for well cementing.Type: GrantFiled: May 22, 1995Date of Patent: August 20, 1996Assignee: BJ Services CompanyInventors: Philip Rae, Neil Johnston
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Patent number: 5479987Abstract: A drilling and cementing process wherein a drilling fluid containing blast furnace slag and glycoside is utilized and thereafter combined with additional blast furnace slag to give a cementitious slurry which is used in a cementing operation.Type: GrantFiled: July 27, 1994Date of Patent: January 2, 1996Assignee: Shell Oil CompanyInventor: Arthur H. Hale
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Patent number: 5447197Abstract: In the method of the invention, a storable hydraulically-active cementitious slurry is made and used to cement within subterranean foundations for oil and gas wells. The slurry is made from hydraulically-active, cementitious material suitable for oil field purposes and can be stored until needed. During storage, the slurry remains liquid. The slurry is activated when needed for cementing. After pumping the activated slurry into the wellbore, the set cement has properties acceptable for well cementing.Type: GrantFiled: January 25, 1994Date of Patent: September 5, 1995Assignee: BJ Services CompanyInventors: Philip Rae, Neil Johnston
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Patent number: 5403394Abstract: An additive to cement based materials to render the materials self-leveling upon being mixed with water and applied as a coating upon a floor substrate. The additive comprises a formaldehyde based resin, preferably melamine formaldehyde, and a water retention agent, preferably xanthan gum alone, hydroxyethyl cellulose alone, or a combination thereof.Type: GrantFiled: February 24, 1994Date of Patent: April 4, 1995Inventor: Yves Burgand
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Patent number: 5372642Abstract: The present invention relates to the use of carboxymethylated methyl hydroxyethyl cellulose ethers or methyl hydroxypropyl cellulose ethers having a DS.sub.alkyl from 1.0 to 2.0, a DS.sub.carboxyalkyl from 0.005 to 0.6 and an MS.sub.hydroxyalkyl from 0.05 to 1 as an additive to mixtures of hydrated lime and cement, and to the mixtures of hydrated lime and cement obtained in this way.Type: GrantFiled: June 7, 1993Date of Patent: December 13, 1994Assignee: Hoechst AktiengesellschaftInventors: Uwe Bartz, Reinhard Donges, Heiner Klehr
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Patent number: 5366550Abstract: A novel cement-based composition comprising a cement powder, a polymeric latex composition, and a water-soluble polysaccharide compound is disclosed. This composition is useful in adhering ceramic and vitreous tiles to plywood substrates. The composition can also be formulated to be an underlayment for preparing a substrate for flooring including carpet, tiles, wood flooring, etc.Type: GrantFiled: April 2, 1993Date of Patent: November 22, 1994Assignee: TEC IncorporatedInventor: Gregory W. Schad
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Patent number: 5352290Abstract: A concrete composition which has superior fluidity and filling property and from which a concrete structure having high quality and durability and being excellent in resistance to freezing and thawing can be made without compaction by vibration. The composition comprises cement, water, aggregate, at least one admixture selected from the group consisting of a water reducing agent, an air entraining agent, an air entraining water reducing agent and a superplasticizer, and at least one viscosity improver of a cellulose type of viscosity improver having a low foaming property which shows specific viscosity and an acrylic type of viscosity improver having a low viscosity which shows specific viscosity in a specified amount.Type: GrantFiled: June 23, 1992Date of Patent: October 4, 1994Assignee: JDC CorporationInventors: Haruyuki Takeshita, Haruya Sawara, Shohei Hoshino, Yoshiyuki Shoji
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Patent number: 5350451Abstract: A slurry composed of paper fibers, water, and cement that can then be used for a variety of construction applications is prepared. After draining the majority of the water, the slurry may be molded into blocks, sheets, or any other desired shape to be used as a construction material, or it can be sprayed onto wire shapes to form custom structures. The slurry product can be used as a mortar in conjunction with building blocks that have been made from the slurry, and it can be used as a plaster when mixed with conventional cement and sand mortar. The slurry can also be poured into forms in the same manner as concrete to form blocks for construction applications.Type: GrantFiled: August 10, 1992Date of Patent: September 27, 1994Inventor: Eric W. Patterson
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Patent number: 5348582Abstract: The invention relates to mineral building materials which contain binders, optionally aggregates and at least one additive, characterized in that the additives used are compounds which are condensation products of substituted or unsubstituted diphenyl sulphones, formaldehyde and compounds from the group consisting of mononuclear or polynuclear, substituted or unsubstituted aromatic compounds, acid amides, urea, urea derivatives, substituted or unsubstituted aromatic ethers and imines.Type: GrantFiled: May 20, 1993Date of Patent: September 20, 1994Assignee: Bayer AGInventors: Joachim Herzig, Kurt Bredtmann, Birger Knickel, Cornelia Dorzbach-Lange
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Patent number: 5346012Abstract: Fine particle size cement compositions and methods of using such compositions for cementing in a subterranean zone penetrated by a well bore are provided. The compositions are basically comprised of a fine particle size hydraulic cement, a fine particle size pozzolanic material and sufficient water to form a pumpable slurry.Type: GrantFiled: February 1, 1993Date of Patent: September 13, 1994Assignee: Halliburton CompanyInventors: James F. Heathman, Ronald J. Crook
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Patent number: 5332434Abstract: Disclosed herein is a method for adjusting the consistency of a concrete mix by adding a water-absorbing polymeric material or a thickening agent of carboxymethylcellulose to a fresh concrete mix.Type: GrantFiled: August 27, 1992Date of Patent: July 26, 1994Assignee: Masahisa TeraoInventors: Eiichi Yooda, Fumitaka Itoh
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Patent number: 5301753Abstract: In the cementing of oil wells, gas wells, or geothermal wells, wherein, under appropriate conditions, a suitable drilling fluid is injected, then optionally a slug fluid and finally a composition comprising water, a cement, at least one viscosity-enhancing additive, optionally at least one retarding agent and optionally at least one silica characterized in that the viscosity-enhancing agent is a scleroglucan solution. It applies particularly to the high temperature cementing of wells.Type: GrantFiled: July 31, 1992Date of Patent: April 12, 1994Assignee: Institut Du PetroleInventors: Ulysse Cartalos, Jacqueline Lecourtier, Alain Rivereau
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Patent number: 5273580Abstract: Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.Type: GrantFiled: November 9, 1992Date of Patent: December 28, 1993Assignee: Halluburton CompanyInventors: Patty L. Totten, Donald W. Lindsey, Bobby J. King
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Patent number: 5184680Abstract: Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.Type: GrantFiled: September 27, 1991Date of Patent: February 9, 1993Assignee: Halliburton CompanyInventors: Patty L. Totten, Donald W. Lindsey, Bobby J. King
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Patent number: 5180430Abstract: A method of reducing the surface voids and imperfections of molded cement structures by forming the cement composition with an admixture comprising a combination of Welan Gum and a water reducing agent.Type: GrantFiled: October 16, 1991Date of Patent: January 19, 1993Assignee: W.R. Grace & Co.-Conn.Inventors: Ellis M. Gartner, Chiara F. Ferraris
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Patent number: 5174821Abstract: This invention provides a hydraulic composition which contains a cementitious material in powder form, .beta.-1,3-glucan, and a superplasticizer. The composition makes it possible to prepare concrete with high resistance to segregation, high fluidity, and excellent filling ability. Because of this, vibration of the concrete is not necessary during casting; it can simply be poured.Type: GrantFiled: April 29, 1992Date of Patent: December 29, 1992Assignees: Taisei Corporation, Takeda Chemical Industries, Ltd.Inventors: Yasunori Matsuoka, Takefumi Shindoh, Kazunao Yokota, Takafumi Naito, Akira Haze, Kiyoshi Nara
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Patent number: 5154771Abstract: A hydraulic inorganic compositions which comprises a hydraulic inorganic powder at least one of polysaccharides selected from the group consisting of .beta.-1,3-glucans, pullulan and XCD-Polymer in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the hydraulic inorganic powder, and water in an effective amount.The composition preferably further contains a reinforcing fiber, a filler, in particular mountain leather, a coagulant and/or a second molding aid, in particular, methyl cellulose.The composition is hardened by hydration under normal pressure to provide a hardened molded article such as a cement board.Type: GrantFiled: July 19, 1990Date of Patent: October 13, 1992Assignee: Takeda Chemical Industries, Ltd.Inventors: Takeo Wada, Kazumi Matsuura, Mitsuo Kato, Hideaki Matsuda