Organic Material Containing Additive (e.g., Carbohydrate, Bituminous Material, Etc.) Patents (Class 106/823)
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Patent number: 7838597Abstract: A fluid loss additive for hydraulic cement, comprising a polyvinyl alcohol resin and a fluid loss ameliorating sulfonic acid-functionalized co-resin, where the polyvinyl alcohol has a characteristic viscosity in the range of about 1 to about 25 cps. The invention includes, in some embodiments, an aqueous concentrate of the PVOH resin and the sulfonic acid-functionalized co-resin, where the total resin content is in the range of about 10% to about 40% and the viscosity is less than 15,000 cps. By way of the invention it is possible to adjust hydraulic cement slurry characteristics in real time upon demand and reduce inventory by providing a concentrated aqueous fluid loss additive.Type: GrantFiled: August 2, 2005Date of Patent: November 23, 2010Assignee: Sekisui Specialty Chemicals America, LLCInventors: Michael E. George, Kristi J. Beckman, Freddie Lyn Sabins, Cory J. Sikora
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Publication number: 20100234490Abstract: Additives for application in construction chemistry are proposed comprising an organic and/or inorganic core component A) with rheology-enhancing properties and a shell component B) applied to the same by virtue of physical and/or chemical interactions which acts as a coating. Component A) should be a of water-soluble and/or water-swellable and/or water-absorbable compound of the non-cellulose type with viscosity-enhancing properties in the final application. The shell component B) should preferably be a film-forming polymer which is able to release component A) during the application in construction chemistry in a retarded manner such as for example polyvinyl alcohol, polyvinyl acetate and polyethylene glycol. Component B) can be composed of several layers and comprises at least one reactive layer.Type: ApplicationFiled: August 10, 2006Publication date: September 16, 2010Inventors: Peter Gäberlein, Michael Schinabeck, Stefan Friefrich, Uwe Holland, Michael Eberwein, Patrick Weiss, Manfred Schuhbeck
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Patent number: 7767019Abstract: A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and the second repeating unit is a vinyl or allyl group bound to a polyether by an ether linkage. The slurry can be made into a gypsum panel.Type: GrantFiled: June 9, 2006Date of Patent: August 3, 2010Assignee: United States Gypsum CompanyInventors: Qingxia Liu, Michael P. Shake, David R. Blackburn, John W. Wilson, Brian Randall, Dennis M. Lettkeman
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Patent number: 7757766Abstract: Of the many compositions and methods provided herein, an example method includes a method of treating a subterranean formation that comprises combining components comprising water and a density-matched suspension to prepare a treatment fluid, wherein the density-matched suspension comprises a suspending liquid and a solid particle suspended in the suspending liquid, and introducing the treatment fluid into a well bore. An example composition includes a suspension that comprises a suspending liquid comprising a hydrophobic liquid, wherein the hydrophobic liquid hydrolyzes when placed in contact with an aqueous fluid to form hydrophilic products, and a solid particle suspended in the suspending liquid, wherein the suspension is a density-matched suspension.Type: GrantFiled: November 19, 2008Date of Patent: July 20, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Sam Lewis, Michael Szymanski, Christopher Gordon
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Publication number: 20100170420Abstract: A method for reducing hexavalent chromium in cement comprising the addition, to said cement, of antimony (III) compounds as reducing agents.Type: ApplicationFiled: October 26, 2007Publication date: July 8, 2010Inventors: Matteo Magistri, Potito D'Arcancgelo
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Patent number: 7744694Abstract: Water-redispersible polymer powder compositions based on a) homo- or copolymers of one or more monomers from the group consisting of vinyl esters of unbranched or branched C1-15 alkylcarboxylic acids methacrylic esters and acrylic esters of C1-15 alcohols, vinylaromatics, olefins, dienes, and vinyl halides, with one or more protective colloids, and optionally, one or more antiblocking agents, in conjunction with one or more alkali metal or alkaline earth metal C1-4 carboxylates as setting accelerants added following polymerization accelerate the setting of construction chemistry products with hydraulically setting binders.Type: GrantFiled: March 4, 2004Date of Patent: June 29, 2010Assignee: Wacker Chemie AGInventors: Hans-Peter Weitzel, Hermann Lutz, Peter Fritze
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Patent number: 7744692Abstract: A lightweight cementitious composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 10 to 50 volume percent of sand and/or other fine aggregate, where at least a portion of the sand and/or fine aggregate has a fineness modulus of less than 2; where the sum of components used does not exceed 100 volume percent, and where after the lightweight cementitious composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The cementitious composition can be used to make concrete masonry units, construction panels, road beds and other articles.Type: GrantFiled: March 22, 2006Date of Patent: June 29, 2010Assignees: Nova Chemicals, Inc., Metromont CorporationInventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary M. Moore, legal representative, Blain Hileman, Richard H. Pennell, Jr.
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Publication number: 20100140531Abstract: The invention relates to the use of a betaine as a foam drainage reducing agent. The invention also relates to the use of betaine in processes involving foam.Type: ApplicationFiled: March 3, 2008Publication date: June 10, 2010Applicant: Rhodia OperationsInventors: Evelyne Prat, Sylvie Touzet, Florence Deschaseaux
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Patent number: 7731793Abstract: A polymeric fluid loss additive for hydraulic cement which includes a polymer component which exhibits delayed hydration. The fluid loss additive is suitable for use in cement slurries which may be subjected to elevated temperatures, as is common in oil and gas drilling operations. By way of the invention, cement slurries are provided which have improved fluid loss properties at high temperatures, while maintaining manageable rheologies that are conducive to mixing, pumping, and the like across a broad range of temperatures.Type: GrantFiled: June 13, 2006Date of Patent: June 8, 2010Assignee: Sekisui Specialty Chemicals America, LLCInventor: Kristy J. Beckman
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Patent number: 7722954Abstract: According to various embodiments, gas-generating additives for use in a cement composition comprise: a gas-generating material at least partially coated with a mixture comprising a fatty acid ester of sorbitan, glycerol, or pentaerythritol and having a shelf life of about 12 months or greater. The gas-generating additives may also include a C8-C18 hydrocarbon. In more embodiments, cement compositions comprise: a gas-generating material at least partially coated with a mixture comprising a fatty acid ester of sorbitan, glycerol, or pentaerythritol and a C8-C18 hydrocarbon for increasing a shelf life of the gas-generating material. In yet more embodiments, cement compositions comprise: a cement; a fluid for making the cement composition pumpable; a hydrogen-generating material at least partially coated with a mixture for delaying a hydrogen-generating reaction, the mixture comprising sorbitan monooleate and an isoparaffin.Type: GrantFiled: November 25, 2008Date of Patent: May 25, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Ashok K. Santra, Rita J. McKinley
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Patent number: 7717998Abstract: To provide an ultrafine particle grouting composition which is excellent in dispersibility and dispersion retainability and can be easily injected into minute spaces between particles of grounds, rock cracks, and the like.Type: GrantFiled: February 7, 2007Date of Patent: May 18, 2010Assignees: Nittetsu Cement Co., Ltd., Nippon Shokubai Co., Ltd.Inventors: Tomohiro Kanazawa, Hirokatsu Kawakami
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Patent number: 7717997Abstract: A method of producing a water resistant fiber-cement product. The water repelling agent can be added or applied to the fiber-cement or indeed the material forming the fiber cement at a number of different stages in the process. The resultant material has increased water impermeability over conventional fiber-cement products.Type: GrantFiled: November 13, 2008Date of Patent: May 18, 2010Assignee: James Hardie Technology LimitedInventor: Simon Trevethick
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Patent number: 7708826Abstract: A cementitious slurry comprising fly ash having a predominant particle size of up to about 10 microns, and/or aluminous material having a predominant particle size of up to about 150 microns. The additive acts as a water reduction agent and can replace either wholly or partially a conventional plasticizer.Type: GrantFiled: August 21, 2008Date of Patent: May 4, 2010Assignee: James Hardie Technology LimitedInventors: Basil Naji, Milton O'Chee
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Patent number: 7699929Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.Type: GrantFiled: August 13, 2008Date of Patent: April 20, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, legal representative, Tobias Blain Hileman
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Patent number: 7699931Abstract: A setting and curing accelerator for hydraulic binders comprises: Al2(SO4)3 aluminum sulfate, Al(OH)3 aluminum hydroxide and mineral acid in aqueous solution. The setting and curing accelerator preferably comprises: 10-50% of Al2(SO4)3 aluminum sulfate, 5-30% of Al(OH)3 aluminum hydroxide, 0.5-10% of a mineral acid in aqueous solution.Type: GrantFiled: December 26, 2007Date of Patent: April 20, 2010Assignee: Sika Technology AGInventors: Marcel Sommer, Urs Mader, Franz Wombacher, Benedikt Lindlar
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Patent number: 7695559Abstract: A cement suspension includes the following, in relation to the cement material: water (22-35% by weight); acetic acid (1-10% by weight); plasticizer (up to 8% by weight); and dispersant agent (0-2% by weight), having an apparent viscosity of 0.5-2 Pa·s for the casting speed gradient. Pieces of cement that are prepared from the suspension and which can be used as electronic components are also disclosed.Type: GrantFiled: April 28, 2005Date of Patent: April 13, 2010Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Ecole Nationale Superieure de Ceramique Industrielle (ENSCI)Inventors: Thierry Chartier, Youssef El Hafiane, Agnes Smith, Jean-Pierre Bonnet
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Patent number: 7686884Abstract: Disclosed is a hydraulically setting composition containing phosphorus-oxygen acid esters or ester salts which comprise alkoxy groups. Also disclosed is a surface-modifying agent for structural steel, which contains or consists of phosphorus-oxygen acid esters or ester salts comprising alkoxy groups. The hydraulically setting composition and the surface-modifying agent are suitable for protecting reinforced concrete.Type: GrantFiled: May 4, 2004Date of Patent: March 30, 2010Assignee: Sika Technology AGInventors: Franz Wombacher, Beat Marazzani, Urs Mäder
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Patent number: 7687440Abstract: A wellbore sealant composition comprising a cementitious material and a cationic latex into the wellbore.Type: GrantFiled: December 1, 2005Date of Patent: March 30, 2010Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Samuel J. Lewis, Ashok K. Santra, Anthony V. Palmer
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Publication number: 20100071595Abstract: A water-based coagulating and hardening accelerator for hydraulic binding agents, comprising sulfate, aluminum and organic acid. The molar ratio of aluminum to organic acid is less than 0.65. Preferably, the molar ratio of aluminum to carboxylic acid is less than 0.60 and greater than 0.38.Type: ApplicationFiled: February 24, 2009Publication date: March 25, 2010Inventors: Benedikt Lindlar, Franz Wombacher, Heinz Schurch, Urs Mader
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Patent number: 7678190Abstract: A cement retarder system for use in underground wells included a borate compound, an organophosphonate salt, and a copolymer formed from AMPS and a monomer selected from the group consisting of acrylic acid, acrylamide and mixtures thereof.Type: GrantFiled: March 26, 2007Date of Patent: March 16, 2010Assignee: Schlumberger Technology CorporationInventors: Michel Michaux, Tatiana Pyatina
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Patent number: 7678193Abstract: The invention relates to the use of lithium glycerophosphate for treating structures made of a cement-based product and having steel rebars, making it possible to inhibit rebar corrosion, to prevent the alkali reaction and to avoid the presence of alkalis and sulfates in the structure.Type: GrantFiled: March 30, 2004Date of Patent: March 16, 2010Assignee: Arts Technology S.A.Inventors: Theophil Markus Lutz, Christian Chevret
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Patent number: 7674331Abstract: The use of silicate as a retarder enhancer at appropriate levels to enhance the retarding effect of retarders at high temperatures encountered downhole while accelerating the set of cement at lower temperatures encountered near to the surface.Type: GrantFiled: August 25, 2004Date of Patent: March 9, 2010Assignee: Schlumberger Technology CorporationInventors: Bruno Drochon, Sylwia Komocki, Michel Michaux
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Patent number: 7674332Abstract: An embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive, wherein the extended settable composition is capable of remaining in a pumpable fluid state for at least about 1 day; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set. Another embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive; storing the extended settable composition; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set.Type: GrantFiled: January 7, 2009Date of Patent: March 9, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Craig W. Roddy, Jilen Chatterji, Bobby J. King, D. Chad Brenneis
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Patent number: 7670423Abstract: Provided herein are defoaming agents that comprise lecithin and a solvent. Optionally, they may comprise hydrophobic particles. One embodiment provides a defoaming agent that comprises lecithin and a solvent.Type: GrantFiled: June 3, 2005Date of Patent: March 2, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Michael J. Szymaski, J. Michael Wilson, Samuel J. Lewis, Bryan K. Waugh
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Patent number: 7670428Abstract: A low viscosity aqueous slurry of hydrated lime is obtained by combining as dispersants a carbohydrate such as glucose syrup and a polycarboxylate polymer salt. The slurries obtained exhibit good viscosity stability over practical storage periods.Type: GrantFiled: November 10, 2005Date of Patent: March 2, 2010Assignee: Ultimate Nominees Pty Ltd.Inventor: Graham George Strachan
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Patent number: 7670426Abstract: Flowable concrete mixtures have an aqueous foam admixture mixed therein to give the concrete mixture desired strength, flowability, and density. The concrete mixtures include a hydration stabilizer to stabilize the aqueous foam. The hydration stabilizer inhibits the reaction between the hydraulic cement and the water in the aqueous foam. The aqueous foam can be further stabilized using a fluorochemical surfactant. Preferred fluorochemical surfactants comprise an oligomer having at least one hydrophilic nonionic monomer and at least one hydrophilic anionic monomer.Type: GrantFiled: December 19, 2005Date of Patent: March 2, 2010Assignee: Jack B. Parson CompaniesInventor: Lonnie James Gray
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Patent number: 7670427Abstract: A method of making a rapid setting composition for cement boards is disclosed. Compositions including portland cement, fly ash, gypsum, alkanolamine and phosphate are disclosed. A synergistic interaction between the alkanolamine and phosphate increases the effectiveness of accelerating reactions thus allowing for quick setting and increased early-age compressive strength compositions.Type: GrantFiled: June 6, 2007Date of Patent: March 2, 2010Assignee: United States Gypsum CompanyInventors: Marianela Perez-Pena, Yanfei Peng, Srinivas Veeramasuneni
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Patent number: 7666258Abstract: A lightweight cementitious composition containing from 22 to 90 volume percent of a cement composition and from 10 to 78 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, where after the lightweight cementitious composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39. The cementitious composition can be used to make concrete masonry units, construction panels, road beds and other articles and can be included as a layer on wall panels and floor panels and can be used in insulated concrete forms. Aspects of the lightweight cementitious composition can be used to make lightweight structural units.Type: GrantFiled: February 24, 2006Date of Patent: February 23, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, legal representative
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Patent number: 7662882Abstract: A defoaming agent for cementitious compositions is provided, which has an excellent defoaming performance and does not segregate when mixed with a high performance AE water-reducing agent to form a single admixture or when diluted in water at the desired concentration, and which has excellent long term storage properties. The defoaming agent for cementitious compositions is obtained by mixing at least a polyethylene oxide derivative and a nonionic defoaming agent wherein the polyethylene oxide derivative has at one end a hydrophobic group with a branched structure and/or an unsaturated bond and at the other end an anionic group.Type: GrantFiled: November 25, 2002Date of Patent: February 16, 2010Assignee: Construction Research & Technology GmbHInventors: Klaus Lorenz, Minoru Yaguchi, Tomomi Sugiyama, Gerhard Albrecht
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Patent number: 7658797Abstract: A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.Type: GrantFiled: October 25, 2006Date of Patent: February 9, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk
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Publication number: 20100018440Abstract: The present invention relates to a fluoride-free solidification and hardening accelerator for hydraulic binders, comprising sulfate, aluminium and organic acid, the molar ratio of aluminium to sulfate being less than 0.83.Type: ApplicationFiled: February 13, 2008Publication date: January 28, 2010Applicant: SIKA TECHNOLOGY AGInventors: Heinz Schurch, Franz Wombacher, Benedikt Lindlar, Didier Lootens, Robert Flatt
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Publication number: 20100003412Abstract: Accelerator for sprayed concrete or sprayed mortar, which is present as an aqueous dispersion which contains 25 to 40% by weight of aluminium sulphate and at least one further aluminium compound, so that the molar ratio of aluminium to sulphate in the dispersion is from 1.35 to 0.70, the aqueous dispersion having an inorganic stabilizer which comprises a magnesium silicate.Type: ApplicationFiled: February 27, 2007Publication date: January 7, 2010Inventor: Martin Weibel
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Patent number: 7641731Abstract: The invention relates to an ultra-high-performance, self-compacting light-colored concrete comprising: a cement; a mixture of calcined bauxite sands of different grain sizes, the finest sand having an average grain size of less than 1 mm and the thickest sand having an average grain size of less than 10 mm; optionally silica fume, whereby 90% of the particles thereof have a size of less than 1 ?m and the average diameter is approximately 0.5 ?m, said silica fume representing at most 15 parts by weight per 100 parts of cement; an antifoaming agent; water-reducing superplasticiser; optionally fibers; and water. The inventive concrete also comprises: ultrafine calcium carbonate particles having a specific surface area that is equal to or greater than 10 m2/g and a form factor (IF) that is equal to or greater than 0.3 and, preferably, equal to or greater than 0.4.Type: GrantFiled: February 11, 2005Date of Patent: January 5, 2010Assignee: Eiffage TPInventors: Sandrine Chanut, Thierry Thibaux
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Patent number: 7641732Abstract: Described herein is the use of new cementitious mortars with a high degree of fluidity and short consolidation times in the production of cementitious products by means of pouring in foundry moulds. The mortars used contain water, a fast-setting cement, fluidifiers and/or superfluidifiers, setting regulators, and aggregates having a specific granulometric distribution. The aggregates are made up of two fractions with different grain size such that the ratio between the characteristic grain diameters of the two fractions is comprised between 2.2 and 3.2. The new mortars thus obtained have values of fluidity 2-3 times higher than those of mortars produced with traditional aggregates.Type: GrantFiled: February 8, 2005Date of Patent: January 5, 2010Assignee: Italcementi S.p.A.Inventors: Umberto Costa, Roberto Cucitore
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Patent number: 7637996Abstract: A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and the second repeating unit is a vinyl or allyl group bound to a polyether by an ether linkage. The slurry can be made into a gypsum panel.Type: GrantFiled: August 17, 2007Date of Patent: December 29, 2009Assignee: United States Gypsum CompanyInventors: David R. Blackburn, Michael P. Shake, Qingxia Liu
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Patent number: 7632348Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate, where the particles contain an antimicrobial agent; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, dining tables, counter surfaces, bench tops, and/or examination tables as well as other articles.Type: GrantFiled: September 14, 2006Date of Patent: December 15, 2009Assignee: NOVA Chemicals Inc.Inventors: David Allen Cowan, Tricia Guevara, Gary F. Matz
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Patent number: 7621995Abstract: A viscosity modifying agent is added to a concrete mixture to give the concrete desirable rheological properties. The viscosity modifying agent is incorporated into a foam admixture before it is mixed into the concrete. Because the viscosity modifying agent is a component of the foam admixture, the viscosity modifying agent is dispersed in the aqueous film that forms the foam bubbles. The viscosity modifier in the foam bubbles gives the foam beneficial rheological properties. The viscosity modifier performs more efficiently when included in the foam bubbles as compared to being mixed directly into the concrete. The foam bubbles containing the viscosity modifier can be stabilized using a fluorochemical stabilizer, which is included in the foam admixture. The foam bubbles can be further stabilized with respect to cement mixtures by including a hydration stabilizing in the cement mixture.Type: GrantFiled: December 19, 2005Date of Patent: November 24, 2009Assignee: Jack B. Parson CompaniesInventor: Lonnie James Gray
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Patent number: 7601770Abstract: A multi-functional admixture for concrete, having improved fluidity for providing hardened materials with improved early strength, smaller shrinkage rate, improved resistance against freezing and thawing action and slower carbonation speed, contains a specified kind of graft copolymer and/or its salt, a specified kind of (poly)alkyleneglycol monoalkyl ether and a specified kind of organic phosphate at specified ratios.Type: GrantFiled: February 24, 2004Date of Patent: October 13, 2009Assignee: Takemoto Yushi Kabushiki KaishaInventors: Kazumasa Inoue, Toshio Yonezawa, Kenrou Mitsui, Masarou Kojima, Mitsuo Kinoshita, Junji Inagaki, Shinji Tamaki, Toyoji Miura
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Publication number: 20090241804Abstract: The invention relates to a composition comprising at least one plasticizer for a hydraulically setting composition and at least one polyalkylene glycol. The invention also relates to a process that uses the composition for improving the processibility, in particular for extending the processing time, of hydraulically setting compositions.Type: ApplicationFiled: December 8, 2006Publication date: October 1, 2009Applicant: SIKA Technology AGInventors: Franz Wombacher, Urs Maeder
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Patent number: 7591893Abstract: A dense mortar includes: (i) an ettringite binder, including calcium sulphate and a calcium aluminate mineral compound, (ii) at least one poly(alkylene oxide) comb polymer and, (iii) at least one organic resin, the organic resin accounting for less than 2% by weight of the mortar.Type: GrantFiled: October 22, 2004Date of Patent: September 22, 2009Assignee: KerneosInventors: Loris Amathieu, Bruno Touzo, Lionel Raynaud, Dina Gauthier
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Publication number: 20090229496Abstract: In accordance with one embodiment of the present disclosure, a method for making a concrete product is described. The method includes positioning a base material and one or more forms together such that the base material and the one or more forms define a volume. The base material and the one or more forms comprise polyester, polyvinyl chloride, polyurethane, polypropylene, polyethylene terephthalate or combinations thereof. The method further includes adding concrete in the volume defined by the base material and the one or more forms and allowing the concrete to dry to a sufficient hardness.Type: ApplicationFiled: March 12, 2008Publication date: September 17, 2009Inventors: Michael Eastergard, David Rainess
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Patent number: 7582158Abstract: A rapid setting, controlled low strength composition of Class C fly ash is provided having a quantity of hydrated lime and an iron chelating compound in an amount sufficient to accelerate the hydration and set time of the fly ash. In some examples, a filler material is added. A method for acceleration of the hydration and set time of a cementitious mixture is provided wherein hydrated lime is added to the cementitious mixture in an amount in the range of 0.1% to 15% by weight and an iron chelating compound in an amount in the range of 0.01% to 5.0% by weight of the cementitious material. Further, a calcium source and an iron chelating compound may be added to a Class C fly ash to accelerate the hydration and set time of the ash.Type: GrantFiled: March 14, 2008Date of Patent: September 1, 2009Inventors: Jerry Setliff, Scott F. Timmons, Clinton W. Pike
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Publication number: 20090199741Abstract: The invention relates to a method for producing a coated basic material for a hydraulic composition (11) comprising a basic material (14, 16) and water (15). According to the invention, the basic material can consist of several sub-groups (14, 16) and at least one hydraulic binding agent (14) and to produce the hydraulic composition the basic material (14, 16) and the water (15) are mixed in a mixer (8). Prior to the mixing of the hydraulic composition, the basic material (14, 16) is at least partially coated with an additive (13). The invention also relates to a coated basic material to be used in concrete production, to an additive for concrete production and to a method for producing a hydraulic composition.Type: ApplicationFiled: September 6, 2005Publication date: August 13, 2009Applicant: SIKA TECHNOLOGY AGInventors: Alexander Bleibler, Urs Mader, Alexander Stucheli, Christian M. Burge, Ralf Beissel, Beat Schnider
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Patent number: 7572330Abstract: The invention relates to the composition of fresh concrete and admixtures for fresh concrete and can be used in the construction industry for producing monolithic and precast concrete and reinforced concrete structures, in spraying mixtures and also in the oil extraction industry when producing injection and insulation cement materials.Type: GrantFiled: November 26, 2004Date of Patent: August 11, 2009Inventors: Satanowskaja Olga Solomonowna Tselner, legal representative, Oswald Vocke, Mikhail Tselner
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Patent number: 7572328Abstract: A slurry is made including water, at least 50% by weight calcium sulfate hemihydrate, and a specific polycarboxylate dispersant prepared using at least three repeating units. A first repeating unit is a vinyl ether-type repeating unit. A second repeating unit includes a maleic acid-type repeating unit. A third repeating unit includes an acrylic acid-type repeating unit. The polymer dispersant has a molecular weight of from about 20,000 to about 80,000 Daltons. The slurry made from this composition can be made at reduced water levels to speed drying and reduce drying costs.Type: GrantFiled: June 14, 2005Date of Patent: August 11, 2009Assignee: United States Gypsum CompanyInventors: Dennis M. Lettkeman, Qingxia Liu, John W. Wilson, Brian S. Randall, David R. Blackburn, Michael P. Shake
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Publication number: 20090197991Abstract: A dry cast cementitious composition including cement, water, and a rheology modifying additive (RMA) is provided. The inclusion of the RMA improves the dry cast cementitious composition's response to vibration and dampens out differences due to minor fluctuations in initial slump of the composition. The RMA may include a dispersant for the dry cast cementitious compositions. The dry cast cementitious composition may optionally include other admixtures or additives known in the industry. Methods for making the dry cast cementitious composition and dry cast cementitious articles from the composition are also provided.Type: ApplicationFiled: August 8, 2008Publication date: August 6, 2009Applicant: Construction Research & Technology GmbHInventors: Jeffrey R. Bury, Lynn E. Brower
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Patent number: 7569108Abstract: The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a first latex stabilizer comprising a surfactant having the formula: R—O—(OCH2CH2)mXM wherein R is an alkyl group having in the range of from about 10 carbons to about 20 carbons, m is an integer in the range of from about 10 to about 40, X is OSO3 or SO3, and M is a compatible cation, and a second latex stabilizer comprising an alcohol ether sulfate having the formula: R1—O—(OCH2CH2)nOSO3M wherein R1 is an alkyl group having in the range of from about 4 carbons to about 12 carbons, n is an integer in the range of from about 1 to about 10, and M is a compatible cation.Type: GrantFiled: September 28, 2006Date of Patent: August 4, 2009Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Bobby J. King, D. Chad Brenneis, Roger S. Cromwell
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Patent number: 7556684Abstract: A strength improvement admixture composition is provided that increases the compressive strength of cementitious compositions without negatively increasing the setting time. The admixture comprises the components of a polycarboxylate dispersant and strength improvement additive.Type: GrantFiled: February 25, 2005Date of Patent: July 7, 2009Assignee: Construction Research & Technology GmbHInventors: Jeffrey R. Bury, Thomas M. Vickers, Jr., Bruce J. Christensen
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Patent number: 7543642Abstract: Cement compositions comprising flexible, compressible beads, processes for preparing such cement compositions, and methods of cementing in subterranean formations using such cement compositions. One or more flexible, compressible beads are mixed with the cement before pumping the cement into a well bore. The flexible, compressible beads are preferably composed of an elastomeric material such as a copolymer of methylmethacrylate and acrylonitrile; a terpolymer of methylmethacrylate, acrylonitrile, and dichloroethane; a styrene-divinylbenzene copolymer; and polystyrene. The flexible, compressible beads may be heated to expand the beads before mixing with the cement such that the ensuing cement composition will have a desired density. Non-flexible beads such as spherulites may also be added to the cement compositions.Type: GrantFiled: January 24, 2003Date of Patent: June 9, 2009Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Krishna M. Ravi, Michael J. Szymanski
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Patent number: 7537656Abstract: Cement compositions may comprise one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N?-iminodisuccinic acid) for retarding the setting of such compositions. The inclusion of such materials in cement compositions may be highly beneficial. In wellbores having BHCT's of less than or equal to about 250° F., the use of the secondary amine as the set retarder ensures that the thickening time of the cement composition is sufficient to allow the cement composition to be pumped to its desired downhole location. Further, the secondary amine may be used in combination with conventional set retarders to enhance the ability of those retarders to increase the thickening time of the cement composition at higher BHCT's, e.g., from about 250° F. to about 525° F.Type: GrantFiled: June 22, 2005Date of Patent: May 26, 2009Assignee: Halliburton Energy Services, Inc.Inventors: Ashok K. Santra, Russell M. Fitzgerald