Silicon, Sulfur, Nitrogen Or Phosphorus Containing Organic Material Patents (Class 106/781)
  • Patent number: 8961672
    Abstract: Solid alkali metal salts of organosilanols and/or their hydrolysis/condensation products are prepared by hydrolysis of organosilanes in water and in the presence of a basic alkali metal salt. The products contain predominately methyl and ethyl organic groups, and C4 or higher hydrocarbon groups as well. The solid salts effectively hydrophobe building materials, while being easily mixed with water.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: February 24, 2015
    Assignee: Wacker Chemie AG
    Inventors: Michael Stepp, Dominik Auer, Karl-Heinz Felix, Daniel Schildbach
  • Patent number: 8920550
    Abstract: The present invention relates to a new mineral matter particle hydrophobization agent and to its various uses for the surface treatment of mineral matter particles.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: December 30, 2014
    Assignee: Coatex
    Inventors: Jean-Marc Suau, Jacques Mongoin, Christian Jacquemet
  • Publication number: 20140230698
    Abstract: Body-hydrophobing of mineral building compositions prepared from water curable mineral materials such as cement and plaster are obtained by admixing into the curable composition an organosilicon compound prepared by reacting a hydrocarbylhalosilane or hydrocarbylhydrocarbyloxysilane with a gylcol or polyglycol in a mol ratio of halo or hydrocarbyloxy radicals to hydroxyl radicals of 0.3 to 1.3. The organosilicon compounds are solid at 20° C.
    Type: Application
    Filed: October 1, 2012
    Publication date: August 21, 2014
    Applicant: Wacker Chemie AG
    Inventors: Michael Stepp, Herbert Koller, Daniel Schildbach
  • Patent number: 8801852
    Abstract: A gypsum slurry is provided that includes calcium sulfate hemihydrate; water; a dispersant component comprising at least one of the following a comb-branched polymer with polyether side chains, naphthalene sulfonate-formaldehyde condensate or melamine sulfonate-formaldehyde condensate; a foaming agent; and a polycondensation component with three polycondensation repeating units. Also provided is a method for making a gypsum slurry with a foaming agent in which the ratio between the dispersant component and the polycondensation component is adjusted to control for the size of foam bubbles in the gypsum slurry. Gypsum products made from the gypsum slurry are provided and methods for making the products are provided as well.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: August 12, 2014
    Assignee: United States Gypsum Company
    Inventors: Chris C. Lee, Alfred C. Li, Richard J. Haszel, David R. Blackburn, James R. Wittbold, Brent Groza
  • Publication number: 20140178624
    Abstract: Water-resistant gypsum boards and compositions and methods for their manufacture are provided. The methods include forming a mixture of water, hydroxide, and siliconate, adding siloxane to the mixture, adding calcium sulfate hemi-hydrate to the mixture to form an aqueous slurry, curing the aqueous slurry under heat, drying the aqueous slurry, and forming a water-resistant gypsum board.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 26, 2014
    Applicant: Georgia-Pacific Gypsum LLC
    Inventor: Robert William Tilford
  • Publication number: 20140150693
    Abstract: Surfactant-coated hemihydrate gypsum which is coated with 0.01 to 1 part by weight of a surfactant based on 100 parts by weight of hemihydrate gypsum, wherein the residual rate of the surfactant when the surfactant-coated hemihydrate gypsum is heated up to 300° C. is not less than 40 wt % of the amount of the surfactant before heating.
    Type: Application
    Filed: August 21, 2012
    Publication date: June 5, 2014
    Applicant: TOKUYAMA CORPORATION
    Inventors: Shingo Hiranaka, Hiroyoshi Kato
  • Publication number: 20140144350
    Abstract: A hydraulic binder containing 25 to 85 wt % of cement clinker, 0 to 7 wt % of CaSO4, a mineral additive(s), and 1 to 10 wt % of a dual setting control system that includes an activator and a retarder, in a weight ratio of activator to retarder, based on the dry substance selected to be greater than 85:15, in particular greater than 90:10, more particularly greater than 95:5, and, in particular, greater than 98:2.
    Type: Application
    Filed: July 9, 2012
    Publication date: May 29, 2014
    Applicant: HOLCIM TECHNOLOGY LTD.
    Inventors: Winnie Matthes, Zarina Castelltort, Thomas Matschei, Moussa Baalbaki
  • Patent number: 8734582
    Abstract: Disclosed is a dry gypsum composition containing hemihydrate gypsum, at least one pigment and a crystal habit modifier. The crystal habit modifier is at least one compound selected from the group consisting of sulfate salts, carboxylate salts, carbonate salts and inorganic chlorides, and a content of the at least one compound is in a range of 0.1 to 5 parts by mass per 100 parts by mass of the hemihydrate gypsum, whereby upon hydration of the hemihydrate gypsum into dihydrate gypsum, the dihydrate gypsum is controlled to become plate crystals having an aspect ratio of 1 to 9. A gypsum-based coating formulation making use of the dry gypsum composition is also disclosed.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 27, 2014
    Assignee: Yoshino Gypsum Co., Ltd.
    Inventors: Takuji Yamashita, Masato Yamaguchi, Yoshikazu Tanaka
  • Publication number: 20140123591
    Abstract: A non-aqueous drywall compound being the combination of a first component mixture of acetone, a non-aqueous liquid adhesive containing ethyl cyanoacrylate, and a powder containing calcium sulfate hemihydrate (plaster of Paris), the mixture being a pliable putty capable of adhering to gypsum wallboard or similar work surfaces. The second component of the drywall compound is an accelerator or activator containing acetone and toluene. The first component is applied to a defect in a work surface using a spreading tool and the second component is then applied to the exposed surface of the first component, such as by spraying or brushing, whereupon the drywall compound cures, hardens or sets within less than ten minutes to a state capable of being sanded into a smooth, hard surface and painted.
    Type: Application
    Filed: November 5, 2012
    Publication date: May 8, 2014
    Inventor: Walter Trudeau
  • Patent number: 8685159
    Abstract: An adhesion bond strength enhancer for cementitious adhesive mortar is disclosed. The adhesion enhancer improves bond strength between the mortar and relatively hydrophobic plastic material, such as extruded polystyrene boards and expanded polystyrene boards of the type generally employed in Exterior Insulation Finishing Systems (“EIFS”). Preparation of non-caking, free-flowing, solid dialkyl sulfosuccinate compositions for use as the adhesion enhancer is also disclosed. The adhesion enhancer is attractive for large-scale application in mineral mortar dry-mixes or other solid construction materials. The invention can be used to improve the strength of an adhesive bond between a) gypsum based plaster or stucco and concrete or bricks, b) tile adhesives and concrete, and c) mineral mortars on polystyrene boards, among others.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: April 1, 2014
    Inventors: Gerald Kratschmer, Jorg Wilken
  • Publication number: 20140069301
    Abstract: Solid alkali metal salts of organosilanols and/or their hydrolysis/condensation products are prepared by hydrolysis of organosilanes in water and in the presence of a basic alkali metal salt. The products contain predominately methyl and ethyl organic groups, and C4 or higher hydrocarbon groups as well. The solid salts effectively hydrophobe building materials, while being easily mixed with water.
    Type: Application
    Filed: May 7, 2012
    Publication date: March 13, 2014
    Applicant: WACKER CHEMIE AG
    Inventors: Michael Stepp, Dominik Auer, Karl-Heinz Felix, Daniel Schildbach
  • Patent number: 8608847
    Abstract: The invention relates to additives for hydraulic binders and systems produced from them, such as concrete and mortar. In particular, the present invention relates to a setting and hardening accelerator for hydraulic binders produced by means of reaction of a calcium compound CV with a silicon compound SV and addition of a phosphonic acid derivative, as well as its production.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: December 17, 2013
    Assignee: Sika Technology AG
    Inventors: Christian Buerge, Franz Wombacher, Christophe Kurz, Beat Marazzani, Gilbert Maeder, Ueli Sulser
  • Publication number: 20130326985
    Abstract: An aqueous gypsum plaster-cement composition comprises a hydraulic binder consisting of calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1, an aggregate which comprises sand, a foam, a perlite, rice hulls or a mixture thereof, a superplasticizer comprising an air entraining agent, a retarder, and water in an amount of from about 0.4 to about 0.75 parts by weight per part of binder, with the proviso that the gypsum plaster-cement composition contains essentially neither a pozzolana nor lime. The use thereof, a method of constructing buildings using this composition and the buildings obtainable in this way are also described.
    Type: Application
    Filed: September 8, 2011
    Publication date: December 12, 2013
    Applicant: CRUPE INTERNATIONAL (IP) GMBH
    Inventors: Hubert Lichtinger, Bernd Bruno Winfried Eck
  • Patent number: 8597426
    Abstract: A panel is provided that includes stucco, water and a dispersant component having dispersing properties and comprising a comb-branched polymer with polyether side chains, naphthalene sulfonate-formaldehyde condensate or melamine sulfonate-formaldehyde condensate. A polycondensation component is also included in the slurry that includes three repeating units. A method of making the gypsum panel includes combining stucco, water and a first dosage of a first dispersant to form a slurry, the first. A second dosage of a second dispersant is added to the slurry. Properties of the gypsum slurry are tested and it is formed into a product. The product sets and properties of the product are identified. The first dosage or the second dosage is changed based on the properties of the slurry or product.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: December 3, 2013
    Assignee: United States Gypsum Company
    Inventors: Chris C. Lee, Alfred C. Li, Richard J. Haszel, David R. Blackburn, James R. Wittbold, Brent Groza
  • Patent number: 8591646
    Abstract: The present invention relates to construction materials comprising at least one binder, at least one oil-containing filler and at least one metallate additive according to formula (1): (RO)m-M-(Oa—Xb—R?c—Yd)n??(1) wherein M is one of titanium and zirconium. The present invention also relates to methods of preparing and using the inventive construction materials. The inventive construction material compositions are capable of utilizing oil-containing fillers in which the oil is stable in the final composition and the desired mechanical properties of the construction material are maintained or improved.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: November 26, 2013
    Assignee: S&E Innovative Technologies LLC
    Inventor: Salvatore J. Monte
  • Publication number: 20130276673
    Abstract: The present invention relates to a plaster-based material which includes an agent capable of trapping formaldehyde, in particular a plasterboard intended for the interior fittings of residential buildings. The agent capable of trapping formaldehyde is chosen from ethylene urea and its derivatives, compounds comprising active methylene(s), sulphites, tannins and their mixtures. Another subject-matter of the invention is the use of the said material for reducing the amount of formaldehyde present in the atmosphere inside residential buildings.
    Type: Application
    Filed: June 21, 2013
    Publication date: October 24, 2013
    Inventor: Parnika SAHAY-TURNER
  • Patent number: 8529693
    Abstract: An adhesion bond strength enhancer for cementitious adhesive mortar is disclosed. The adhesion enhancer improves bond strength between the mortar and relatively hydrophobic plastic material, such as extruded polystyrene boards and expanded polystyrene boards of the type generally employed in Exterior Insulation Finishing Systems (“EIFS”). Preparation of non-caking, free-flowing, solid dialkyl sulfosuccinate compositions for use as the adhesion enhancer is also disclosed. The adhesion enhancer is attractive for large-scale application in mineral mortar dry-mixes or other solid construction materials. The invention can be used to improve the strength of an adhesive bond between a) gypsum based plaster or stucco and concrete or bricks, b) tile adhesives and concrete, and c) mineral mortars on polystyrene boards, among others.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: September 10, 2013
    Assignee: Troy Corporation
    Inventors: Gerald Krätschmer, Jörg Thomas Wilken
  • Patent number: 8506700
    Abstract: A dry composition including at least one binder and at least one silicone oil with the following formula (I): in which: Z1 and Z2, identical or different, independently represent a terminal group selected from the group consisting of a hydrogen atom; a hydroxyl; a linear or branched, optionally substituted C1 to C12 alkyl; a linear or branched, optionally substituted C2 to C12 alkenyl radical; a linear or branched, optionally substituted C1 to C12 heteroalkyl; an optionally substituted C5 to C10 cycloalkyl radical; and an optionally substituted C6 to C18 aryl radical; R1 and R2, identical or different, independently represent a hydrogen atom; a hydroxyl; a linear or branched, optionally substituted C1 to C12 alkyl; a linear or branched, optionally substituted C2 to C12 alkenyl radical; a linear or branched, optionally substituted C1 to C12 heteroalkyl; an optionally substituted C5 to C10 cycloalkyl radical; or an optionally substituted C6 to C18 aryl radical; m and n, identical or different, independen
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 13, 2013
    Assignee: Sika Technology AG
    Inventors: Christophe Guyot, Laurent Guillot
  • Publication number: 20130199418
    Abstract: Disclosed is a dry gypsum composition containing hemihydrate gypsum, at least one pigment and a crystal habit modifier. The crystal habit modifier is at least one compound selected from the group consisting of sulfate salts, carboxylate salts, carbonate salts and inorganic chlorides, and a content of the at least one compound is in a range of 0.1 to 5 parts by mass per 100 parts by mass of the hemihydrate gypsum, whereby upon hydration of the hemihydrate gypsum into dihydrate gypsum, the dihydrate gypsum is controlled to become plate crystals having an aspect ratio of 1 to 9. A gypsum-based coating formulation making use of the dry gypsum composition is also disclosed.
    Type: Application
    Filed: November 28, 2011
    Publication date: August 8, 2013
    Applicant: YOSHINO GYPSUM CO., LTD.
    Inventors: Takuji Yamashita, Masato Yamaguchi, Yoshikazu Tanaka
  • Publication number: 20130189530
    Abstract: Aqueous silane formulations for treatment of an article or material such as wood, concrete, drywall, cotton fabric or wool fabric, and methods of treating the article or material with the formulation. The aqueous medium comprises an alkoxysilane or a combination of a halosilane a high concentration of a salt component. Optionally, the silane formulation may include a boron-containing component. Integrated processes for producing hydrophobic paper, gypsum, drywall, and concrete by pre-mixing components with alkoxysilane are also disclosed. Further disclosed are combinations of a silane component and a salt component, e.g., in a premixture or in a kit, co-pack or co-shipment. Novel treated products, including recreational equipment, are also disclosed.
    Type: Application
    Filed: February 22, 2011
    Publication date: July 25, 2013
    Applicant: STL SUSTAINABLE TECHNOLOGIES, LLC
    Inventor: Michael M. Thompson
  • Publication number: 20130174760
    Abstract: The present application relates to compositions comprising at least one siloxane and at least one superplasticizer based on polycarboxylate ethers or sulphonates of lignin, melamine or naphthalene or of resins thereof, and to the use of such compositions as or in building-product mixtures or building products, especially mortar mixtures or concrete mixtures.
    Type: Application
    Filed: December 19, 2012
    Publication date: July 11, 2013
    Inventors: Frauke HENNING, Anke Reinschmidt, Ralph Scheuermann, George-Hans Bayne, Kerstin Klein, Markus Roos
  • Patent number: 8398764
    Abstract: Provided herein are mixtures, emulsions and other additives for use in manufacturing gypsum wallboard. The mixtures and emulsions may be wax-based emulsions or wax-free mixtures or emulsions, with wax-based emulsions including water, at least one wax, a dispersant which may include sulfur or a sulfur-containing group, and an additive comprising an organic titanium compound or organic zirconium compound. Mixtures may also be prepared including water, a dispersant; and an additive comprising an organic titanium compound or organic zirconium compound. Gypsum slurries may be prepared using such emulsions and mixtures and/or through addition of an organic titanium compound or organic zirconium compound.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: March 19, 2013
    Assignee: Henry Company LLC
    Inventors: Dennis Michael Mahoney, Jonathan Stuart, John H. Burns
  • Publication number: 20120234540
    Abstract: Methods comprising providing a dry, solid particulate material comprising a cementitious material, a non-cementitious material, or a combination thereof and having a flow enhancing additive absorbed thereon. The flow enhancing additive comprises a flow inducing chemical, ethylene glycol, and water. The coated, dry, solid material is then mixed with a sufficient amount of water to form a pumpable slurry and then the slurry may be placed in a subterranean formation. In some cases the dry, solid particulate material comprising a cementitious material, a non-cementitious material, or a combination thereof and having a flow enhancing additive absorbed thereon may be stored for a period of time before the slurry is formed.
    Type: Application
    Filed: June 1, 2012
    Publication date: September 20, 2012
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Sam Lewis, Rita McKinley, Russell Fitzgerald
  • Publication number: 20120082858
    Abstract: A method of manufacturing a water-resistant gypsum article, comprising sonicating a water-resistance additive in water to form a emulsion; combining the emulsion, calcined gypsum, and gauging water to form a slurry; and forming and setting the slurry to form the water-resistant gypsum article.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 5, 2012
    Applicant: GEORGIA-PACIFIC GYPSUM LLC
    Inventor: Andrzej A. Przybysz
  • Publication number: 20120068110
    Abstract: The application relates to a reactive ceramic binder suitable for producing ceramic products from ceramic powder, characterized in that the reactive ceramic binder represents hydroxyl compounds which carry reactive silyl groups and can be additionally (poly)siloxane-substituted.
    Type: Application
    Filed: April 26, 2010
    Publication date: March 22, 2012
    Applicant: EVONIK GOLDSCHMIDT GMBH
    Inventors: Frank Schubert, Thomas Ebbrecht, Matthias Naumann, Wilfried Knott
  • Publication number: 20110203487
    Abstract: The present invention relates to the use of a solid comprising at least one organosilane and a carrier material to hydrophobise mortars, wherein the organosilane has the formula R1Si(OR?)3 or R1R2Si(OR?)2 wherein R1 and R2 are the same or different and are a linear or branched C1- to C4-alkyl and/or alkenyl group, OR? is an acetoxy, a C1- to C4- alkoxy and/or a C2- to C6-methoxyalkoxy and/or ethoxyalkoxy group, and the carrier material is a solid at room temperature. The amount of cement in the final formulation is zero or less than 5 wt.-%, based on the total weight of the final formulation in the dry and uncured form. Claimed are also a powder comprising the silane and a carrier with the carrier being a water-soluble polymer, dry mortar formulations containing no or less than 5 wt.-% cement, based on the dry weight of the uncured mortar formulation, as well as processes to manufacture the formulations and/or compounds.
    Type: Application
    Filed: November 3, 2009
    Publication date: August 25, 2011
    Applicant: AKZO NOBEL N.V.
    Inventors: Thomas Aberle, Andrei P. Pustovgar, Franck Vallée, Paul Emmenegger, Dominique Schaub
  • Publication number: 20110197790
    Abstract: A modified sulfur binder capable of implementing a physical property of being re-melted at a temperature less than 100° C., by mixing sulfur with a heterocyclicamine or alkylamine-based modifier and a dicyclopentadiene-based modifier, and a fabrication method thereof. A hydraulic modified sulfur material composition capable of being mixed with water by adding a surfactant to the modified sulfur binder, and obtained by mixing aggregate and a hydraulic material to the modified sulfur binder, and a fabrication method thereof. A hydraulic modified sulfur material obtained by molding the hydraulic modified sulfur material composition, and a fabrication method thereof. A combustible modified sulfur material composition obtained by adding aggregate to the modified sulfur binder, and by selectively adding a filler to the modified sulfur binder, and a fabrication method thereof.
    Type: Application
    Filed: October 15, 2008
    Publication date: August 18, 2011
    Inventor: Mun-Son Choe
  • Publication number: 20110056409
    Abstract: The present invention relates to a setting retarder for compounds that set hydraulically, containing at least one at least simple adduct and/or condensate, the retarder being produced by the reaction of at least one protein hydrolysate, one pure amino acid, amino acid mixture, and/or the hydrochlorides thereof having at least one mono-, di-, oligo- and/or polycarboxylic acid which is not derived from an amino acid, and/or a carboxylic acid derivative derived therefrom, wherein the carboxylic acid is selected from a group including carboxylic acid anhydrides, carboxylic acid halogenides, and/or carboxylic acid active esters.
    Type: Application
    Filed: April 9, 2009
    Publication date: March 10, 2011
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Maria Winkler, Franz Etschmann
  • Patent number: 7767014
    Abstract: A mold material castable to provide a mass reduced work piece machinable to produced a mold and methods of utilizing such mold material to cast mass reduced work pieces machinable to produce a mold.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: August 3, 2010
    Assignee: EBS Concepts, LLC
    Inventor: Eric B. Strauss
  • Patent number: 7553362
    Abstract: A hydraulic cement for biomedical applications. The cement sets in-situ, hardening when exposed to water to produce nano-dispersed composite of calcium-silicate-hydrate gel mixed with hydroxyapatite. In comparison with prior cements, the composition provides high biocompatibility, high bioactivity and high biomechanical strength, due to the composite structure of the calcium silicate hydrate reinforced with co-precipitated particles of hydroxyapatite. Biocompatibility is also increased due to an absence of aluminum and magnesium in the composition. The cement is suitable for variety of applications, including dental implants, bone fixation, and bone repair.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: June 30, 2009
    Assignee: Innovative BioCeramix, Inc.
    Inventors: Donghui Lu, Shuxin Zhou
  • Patent number: 7504165
    Abstract: A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound. The mixture includes from about 50% to about 98% by weight calcium sulfate hemihydrate. A three repeating unit polycarboxylate dispersant is included in the mixture in amounts from about 0.2% to about 10% by weight. The repeating units include a polyether repeating unit, an acrylic acid-type repeating unit and a maleic acid-type repeating unit. A modifier that enhances the efficacy of the dispersant is also a component of the mixture. When combined with recommended amounts of water, a slurry is formed that is useful as a flooring composition.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: March 17, 2009
    Assignee: United States Gypsum Company
    Inventors: Dennis M. Lettkeman, John W. Wilson, William K. Bedwell
  • Patent number: 7473713
    Abstract: Emulsions are provided which are useful in imparting water-resistance to gypsum products. In one embodiment, the emulsions comprise at least one wax, an alkyl phenol, a salt of polynaphthalenesulfonic acid, and a complexed starch. Emulsions of this embodiment may be added to hot, even boiling, water without the emulsion separating or curdling. The emulsions of the present invention are stable for extended periods of time when stored at room temperature and do not require the addition of a bactericide. The emulsions of the present invention are pourable liquids at room temperature.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: January 6, 2009
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventors: Steven Wantling, Bonnie S. Zepka
  • Patent number: 7473712
    Abstract: Emulsions are provided which are useful in imparting water-resistance to lignocellulosic composite products. In one embodiment, the emulsions comprise at least one wax, an alkyl phenol, a salt of polynaphthalenesulfonic acid, and a complexed starch. Emulsions of this embodiment may be added to hot, even boiling, water without the emulsion separating or curdling. The emulsions of the present invention are stable for extended periods of time when stored at room temperature, do not require the addition of a bactericide, and are pourable liquids at room temperature.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: January 6, 2009
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventors: Steven J. Wantling, Bonnie S. Zepka
  • Patent number: 7413603
    Abstract: Articles, including fiberboard, are made from a pumpable, flowable slurry including alpha-calcined calcium sulfate hemihydrate anchored in pores of host particles, alpha-calcined calcium sulfate hemihydrate, a silicone compound, magnesium oxide, and water. The magnesium oxide catalyzes the reaction of the silicone compound into a silicone resin. In a preferred method of making a water resistant fiberboard calcium sulfate dihydrate is combined with the host particles and water to form a slurry which is heated under pressure to calcine the calcium sulfate dihydrate to form alpha-calcined calcium sulfate hemihydrate. After relieving the pressure, a silicone compound and magnesium oxide are added to the slurry. The slurry is dewatered to form a filter cake, which is then formed into a desired shape and allowed to set.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: August 19, 2008
    Assignee: United States Gypsum Company
    Inventors: David Paul Miller, Srinivas Veeramasuneni
  • Patent number: 7410538
    Abstract: A cementitious material in powder form comprising cement, also comprises sufficient of a granulated hydrophobing additive, which comprises form 5 to 15 parts by weight of an organopolysiloxane component, form 10 to 50 parts by weight of a water-soluble or water-dispersible binder and from 50 to 90 parts by weight of a carrier particle, to give from 0.01 to 5% by weight of the organosiloxane component based on the weight of the cement. The cementitious material displays good hydrophobicity, which may improve upon subsequent wettings of the applied cementitious material to a substrate.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: August 12, 2008
    Assignee: Dow Corning Corporation
    Inventors: Derek Butler, Frederic Gubbels
  • Publication number: 20080148997
    Abstract: An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a naphthalene sulfonate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the naphthalene sulfonate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventors: David R. Blackburn, Qingxia Liu, Michael P. Shake
  • Patent number: 7374610
    Abstract: Emulsions, useful for imparting water resistance to gypsum products are disclosed. The emulsions of the invention include at least one wax, an alkyl phenol and a hydrophyllic metallic salt, preferably magnesium sulfate. The emulsions of the invention do not require the addition of a starch compound and therefore exhibit enhanced stability even at higher solids content then compared to prior art emulsions.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: May 20, 2008
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventor: Steven J. Wantling
  • Patent number: 7311770
    Abstract: A hydrophobic gypsum composition is provided which contains gypsum, a granulated hydrophobing additive and a pH effecting additive in an amount sufficient to maintain the pH of the composition in the range of 8 and 12.5, in the presence of water. The granule contains an organopolysiloxane having silicon bonded hydrogen, a water soluble or water dispersible binder, and a carrier, preferably gypsum or a stearate salt, in an amount sufficient to hydrophobe the gypsum. The pH effecting additive is preferably lime but may be any appropriate additive.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 25, 2007
    Assignee: Dow Corning Corporation
    Inventors: James Windridge, Frederic Gubbels, Derek Butler, Manfred Wehner
  • Patent number: 7294189
    Abstract: An emulsion comprising water as the continuous phase, a wax as the discontinuous phase, an emulsifier and a preservative having the general structure: wherein R1 can be a heterocycle containing nitrogen and sulfur, such as thiazolyl, isothiazolyl, or thiadiazolyl, which can optionally be substituted with C1–C6 alkyl; R2 can be hydrogen or C1–C6 alkyl, specifically hydrogen; n is 0, 1, 2, or 3; each instance of R3 can independently be hydrogen, C1–C6 alkyl, phenoxy, C1–C6 alkoxy, halo, amino, C1–C6 alkylamino, di C1–C6 alkyl amino, imidazolyl, thiazolyl, isothiazolyl, thiadiazolyl, thienyl, furyl, pyrryl, naphthyl, phenyl, halophenyl, C1–C6 alkyl phenyl, or C1–C6 alkoxyphenyl. The preservative may be added to the emulsion after the emulsion is formed. The emulsion can be incorporated into a gypsum product such as gypsum board or gypsum wood fiber board. The gypsum product may be made by forming a slurry containing gypsum, water, and the emulsion into a solid product.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: November 13, 2007
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventor: Steven Wantling
  • Patent number: 7293941
    Abstract: Disulfonate salts of 2,4-pentanedione and methods for making such salts are described. The disulfonate salts are useful as cement dispersants. Cement compositions including such salts, methods for making cement compositions including such salts, and methods for performing cementing operations using such cement compositions are also described.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 13, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Samuel J. Lewis, Michael J. Szymanski
  • Patent number: 7294195
    Abstract: In at least one embodiment, the present invention relates to a gypsum composition suitable for use in the manufacture of construction materials comprising a) gypsum, b) water, and c) a water repellancy composition comprising a hydroxy-based cellulose and a siliconate.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: November 13, 2007
    Assignee: Wacker Chemical Corporation
    Inventor: Richard L. Kirkpatrick
  • Patent number: 7285166
    Abstract: Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: October 23, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Karen Luke, B. Raghava Reddy, Russell M. Fitzgerald, Frank Zamora, Glen C. Fyten, Keith A. Rispler, Donald A. Getzlaf, Dennis W. Gray, Sears T. Dealy
  • Patent number: 7258738
    Abstract: Disulfonate salts of 2,4-pentanedione and methods for making such salts are described. The disulfonate salts are useful as cement dispersants. Cement compositions including such salts, methods for making cement compositions including such salts, and methods for performing cementing operations using such cement compositions are also described.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: August 21, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Samuel J. Lewis, Michael J. Szymanski
  • Patent number: 7244305
    Abstract: Disclosed is an antibacterial gypsum composition for dental surgery, which eliminates pathogens transferred from the mouth of a patient, so that a dentist or others participating in dental surgery can be prevented from being infected by such pathogens during the work for dental surgery. The antibacterial gypsum composition for dental surgery comprises ?-plaster for a dental model and an organic nitrogen-based compound, polyhexamethylene guanidine phosphate, as an antibacterial agent.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 17, 2007
    Inventor: Doo Suek Nam
  • Patent number: 7220373
    Abstract: Process for the manufacture of plasterboards exhibiting a core density of less than 0.77 comprising the stages of the formation of a foam from water and a surfactant composed of at least one alkyl sulphate of formula H(CH2)nOSO3?M+, in which n is a number between 6 and 16, M is a monovalent cation and the mean number of carbon atoms nm is from 9 to 10, and the introduction of the foam obtained into a plaster slurry, characterized in that the amount of surfactant introduced does not exceed 0.32 g/l of plaster slurry. Application to the manufacture of lightened plasterboards.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: May 22, 2007
    Assignee: Lafarge Platres
    Inventors: Daniel Martin, Robert Garcin
  • Patent number: 7052543
    Abstract: The current invention provides an improved permeable cement composition for formation of downhole sand screens. The improved composition includes an effective amount of a surfactant. Addition of the surfactant to the permeable cement composition yields at least a pumpable slurry with a minimal amount of water or brine solution.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: May 30, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Johnny A. Barton
  • Patent number: 7033432
    Abstract: The present invention provides a plaster composition that includes calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000. The present invention also provides a method of forming a plaster composition that includes belending calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000 together to form a dry blend and contacting the dry blend with water to form a hardenable aqueous slurry.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: April 25, 2006
    Assignee: GEO Speciality Chemicals, Inc.
    Inventors: Arpad Savoly, Dawn P Elko, Bennie Veal
  • Patent number: 7033431
    Abstract: A gypsum composition including gypsum, water, and a surfactant composition of alkyl sulfates of formula H(CH2)nOSO3?M+, in which n is from 6 to 16, the mean number of carbon atoms in the alkyl sulfate composition nm being between 10 and 11, and M is a monovalent cation. A process for the preparation of the gypsum composition and a gypsum board obtainable from this composition. Finally, a process for the manufacture of gypsum boards. Application for the manufacture of foamed gypsum boards.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: April 25, 2006
    Assignee: Lafarge Platres
    Inventors: Daniel Martin, Robert Garcin, Serge Sabio
  • Patent number: 6989057
    Abstract: A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: January 24, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
  • Patent number: 6982000
    Abstract: The present invention provides improved cement compositions comprising hydraulic cement, silica hydrophobicized with a mixture of organosilicon compounds and water.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: January 3, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, Craig W. Roddy