Starch, Dextran, Cellulose Ether Or Gum Patents (Class 106/730)
  • Patent number: 10233379
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 19, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: B. Raghava Reddy
  • Patent number: 9845265
    Abstract: A system based on plant or bio-sourced materials selected from among coatings, mortars and concretes of bio-sourced materials comprising a plant or bio-sourced material selected from the group consisting of wood and hemp, and a binder composition comprising a first conventional mineral component and a second component, said system being characterized in that said binder composition has a specific surface area calculated according to the BET method, greater than 10 m2/g, preferably greater than 12 m2/g, in particular greater than 14 m2/g and uses thereof.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: December 19, 2017
    Assignee: S.A. Lhoist Recherche et Developpement
    Inventors: Peter Ulrike, Daniel Daviller
  • Patent number: 9828292
    Abstract: A binder composition for enhanced mortars and coatings, comprising a first conventional mineral component and a second component based on powdery slaked lime, wherein said second component based on powdery slaked lime has a specific surface area calculated according to the BET method of less than 12 m2/g, advantageously less than 11 m2/g, in particular less than 10 m2/g, preferably less than 9 m2/g and its uses as well as the enhanced coating or mortar systems comprising an aggregate of the mineral type and the aforesaid composition.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 28, 2017
    Assignee: S. A. Lhoist Recherche et Developpement
    Inventors: Peter Ulrike, Daniel Daviller
  • Patent number: 9346712
    Abstract: A mortar contains cement, one or more than one mineral additive, superplasticizer, aggregates, a hydroxyethyl methyl cellulose and water, wherein the hydroxyethyl methyl cellulose is characterized by the sum of its hydroxyethyl molecular substitution and methyl degree of substitution is 1.90 or higher and 2.30 or lower and its viscosity as a 2 weight-percent aqueous solution that is below 30,000 milliPascals*seconds.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: May 24, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Robert Baumann, Grit Grote, Marc Schmitz
  • Publication number: 20150144032
    Abstract: Disclosed are methods for the preparation of alkyl hydroxyalkyl cellulose ethers, and the use of such alkyl hydroxyalkyl cellulose ethers in the preparation and use of mortars and other cement-based systems; also disclosed is a hydraulic composition containing at least one retarder, at least one accelerator and a cellulose ether having a prolonged open time without deterioration of the other cement tile adhesive properties such as workability, setting time, strength development and sag resistance; and further disclosed are dry mortars containing encapsulated calcium chloride used in preparing mortar materials for use in construction, and the preparation and use of such mortars in cold weather environments is also disclosed.
    Type: Application
    Filed: July 23, 2014
    Publication date: May 28, 2015
    Inventors: Kelly A. Brush, Patrick J. Cowan, Wilfried Adolphe Hohn, Alexander Adolphe Kindler, Vera Louise Nilles
  • Patent number: 8927097
    Abstract: A molded, decorative article having a fiber-reinforced geo-composite wall with a thickness of between 4-10 mm and a method of manufacturing the same, the fiber-reinforced geo-composite wall comprising, before curing, predominately 45-55 by weight % mineral-based type III clinker, 24-28 by weight % water, and 8-9 by weight % hydration control agent, the combination of clinker, water, and hydration control agent forming a basic water-reactive rapid-setting cementious binder, the hydration control agent controlling curing time of the water-reactive rapid-setting cementious binder, 1-2 by weight % combination of micro-fibers and macro-fibers dispersed evenly within the cementious binder, the micro-fibers being 3-6 mm and the macro-fibers being 7-25 mm in length, 0.03-0.10 by weight % combination of rheology modifier, polymer modifier, and moisture retention agent, 0-0.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: January 6, 2015
    Assignee: PEBA Trading & Manufacturing Corporation
    Inventor: David R. Mune
  • Patent number: 8864903
    Abstract: Plaster compositions including at least one cement having a first particle distribution and a first mode, at least one non-reactive fine aggregate having a second particle size distribution and a second mode, at least one non-reactive coarse aggregate having a third particle size distribution and a third mode, and an unmodified, hydrophilic, starch. The first mode is greater than the second mode and less than the third mode. The combination of cement, non-reactive fine and coarse aggregates and unmodified, hydrophilic, starch produces a plaster composition having favorable properties suitable for use in providing exposed aggregate finishes used in water reservoirs, pools, and stucco finishes.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 21, 2014
    Assignee: SCG Cement Company Limited
    Inventors: Wilasa Vichit-Vadakan, Pichet Sahachaiyunta, Prapas Oodtiya
  • Patent number: 8858703
    Abstract: A zinc-oxide based set retardant additive and admixture for use in Portland cement or other hydraulic cement mixtures. The admixture may comprise silica fume, vitreous calcium aluminosilicate, magnesium aluminum silicate hydrate, a cellulose ether derivative, or their equivalents. The zinc-oxide based set retardant may be interground or pre-blended, pre-packaged, or added on the jobsite, as an admixture, additive, or addition. The zinc-based set retardant may be subsequently added or mixed into a ready mix or wet mixture of portland cement or other hydraulic cement, sand and/or aggregate, with or without fillers, and water, with or without other pozzolans or polymers.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: October 14, 2014
    Assignee: Pebble Technology, Inc.
    Inventor: Jonathan E. Dongell
  • Patent number: 8846157
    Abstract: The invention relates to a method for producing solid materials having an air content of ?16 vol. % in relation to the total volume of solid materials, characterised in that hydraulically setting coating agents containing at least one cationic protective colloid are applied to an undersurface by means of mechanical methods using compressed air with air quantity factors of up to 100 or by manual methods.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: September 30, 2014
    Assignee: Wacker Chemie AG
    Inventor: Klaus Bonin
  • Patent number: 8758504
    Abstract: The present invention provides cement grinding additive compositions and methods which allow a powerful, robust defoamer to be uniformly dispersed throughout a broad concentration range while retaining storage stability even in cases wherein the defoamer is highly diluted. Exemplary cement grinding additive compositions comprise at least one amine cement grinding additive; a tri-iso-butylphosphate defoamer; a biopolymer polysaccharide gum selected from the group comprising Diutan, Whelan, Xanthan, or mixtures thereof; and water in the amount of 0.10 to 95.0 percent based on total weight of composition. Methods for manufacturing cement using the cement grinding additive compositions are also described.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: June 24, 2014
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Leslie A. Jardine, Josephine H. Cheung
  • Publication number: 20140116297
    Abstract: Plaster compositions including at least one cement having a first particle distribution and a first mode, at least one non-reactive fine aggregate having a second particle size distribution and a second mode, at least one non-reactive coarse aggregate having a third particle size distribution and a third mode, and an unmodified, hydrophilic, starch. The first mode is greater than the second mode and less than the third mode. The combination of cement, non-reactive fine and coarse aggregates and unmodified, hydrophilic, starch produces a plaster composition having favorable properties suitable for use in providing exposed aggregate finishes used in water reservoirs, pools, and stucco finishes.
    Type: Application
    Filed: December 17, 2012
    Publication date: May 1, 2014
    Applicant: SCG Cement Company Limited
    Inventors: Wilasa Vichit-Vadakan, Pichet Sahachaiyunta, Prapas Oodtiya
  • Patent number: 8689870
    Abstract: Methylhydroxyethyl cellulose may be used as an additive in cement slurries in the treatment of wells to prevent or reduce the occurrence of gas channeling. In addition to acting as a gas control additive, methylhydroxyethyl cellulose controls fluid loss, minimizes free fluid and stabilizes foam during cementing of the well.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: April 8, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Windal Scott Bray, Andreas Brandl
  • Patent number: 8652580
    Abstract: A manufacturing method of tiles includes the steps of: preparing mixed powder having a water content of 2 to 7% by mixing 30 to 80 parts by weight of calcium hydroxide powder or dolomite plaster powder, 20 to 70 parts by weight of porous aggregate, 0.1 to 5 parts by weight of a first photocatalyst and water; filling the mixed powder into a mold of a molding machine; forming a formed body by pressurizing the filled mixed powder; curing the formed body in a carbon dioxide atmosphere; and forming a thin layer made of a second photocatalyst on a surface of the formed body.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: February 18, 2014
    Assignee: Tagawasangyo Co., Ltd.
    Inventors: Nobuyoshi Yukihira, Tetsuro Oike, Katsuyuki Nakano
  • Patent number: 8652252
    Abstract: A hydraulic composition comprising a water-soluble hydroxyalkyl alkyl cellulose, cement, aggregate, reinforcing fibers, and water is provided. The hydroxyalkyl alkyl cellulose has a degree of alkyl substitution of 1.2-1.7, the sum of the degree of alkyl substitution and the molar substitution of hydroxyalkyl is 1.5-2.0, and a proportion of glucose ring not substituted with alkyl and hydroxyalkyl groups per glucose ring unit is up to 10 mol %. The composition cures within a short time and is extrusion moldable even at elevated temperature.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: February 18, 2014
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hidekazu Konishi, Rumiko Itoh, Tsutomu Yamakawa, Kazuhisa Hayakawa
  • Patent number: 8535437
    Abstract: The invention concerns the use of a fluid loss control additive in a pumpable geopolymeric suspension for oil and/or gas industry applications, said suspension further comprising an aluminosilicate source, a carrier fluid, and an activator, and method of providing such a suspension in a borehole. In particular, the suspension according to the invention is used for well primary cementing operations and/or remedial applications.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: September 17, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Elena Pershikova, Olivier Porcherie, Slaheddine Kefi, Yamina Boubeguira, Hafida Achtal
  • Patent number: 8465586
    Abstract: The present invention relates to polysaccharide derivatives having an adjusted particle morphology for use in the preparation of a hydraulic setting composition having an adjusted lump rating. The invention further relates to a method of adjusting the lump rating of a hydraulic setting composition comprising adjusting the particle morphology of a particulate polysaccharide derivative. Furthermore, the invention is directed to a hydraulic setting composition comprising a particulate polysaccharide derivative having an adjusted particle morphology. The invention is also directed to various uses of the particulate polysaccharide derivative having an adjusted particle morphology.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: June 18, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Robert Baumann, Yvonne Goerlach-Doht, Marco Grosstueck, Juergen Hermanns, Joerg Neubauer
  • Patent number: 8435344
    Abstract: Cement compositions comprising carboxylated inulin and methods of using the same to cement a workspace. In one embodiment, a method of cementing includes providing a cement composition comprising a carboxylated inulin, for example, in a subterranean formation. The method further includes allowing the cement composition to set. In some embodiments, the cement composition has a thickening time of from about 2 hours to about 11 hours. In other embodiments, the cement composition has a viscosity that is about constant for a period of time after the cement composition is placed.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 7, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ashok K Santra, B. Raghava Reddy, D. Chad Brenneis
  • Patent number: 8430957
    Abstract: Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 30, 2013
    Assignee: Hercules Incorporated
    Inventors: Wilfried Adolf Hohn, Kirill N. Bakeev, John Kenneth Bard, Michael Dittel, Teng-Shau Young
  • Patent number: 8394191
    Abstract: A cementitious composition including cement, water, and a rheology modifying additive (RMA) is provided. The inclusion of the RMA improves the cementitiuous 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 cementitiuous compositions. The cementitious composition may optionally include other admixtures or additives known in the industry. A method for making the cementitious composition is also provided.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: March 12, 2013
    Assignee: Construction Research & Technology GmbH
    Inventor: Jeffrey R. Bury
  • Patent number: 8377196
    Abstract: 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: Grant
    Filed: August 8, 2008
    Date of Patent: February 19, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Jeffrey R. Bury, Lynn E. Brower
  • Patent number: 8317914
    Abstract: A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with cationic or nonionic oil. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: November 27, 2012
    Assignee: Weyerhaeuer NR Company
    Inventors: Robert T Hamilton, David J O'Callaghan, Hugh West
  • Patent number: 8282732
    Abstract: A method includes adding in a concrete composition at least one cellulose ether having either, a degree of substitution of methoxy radicals (DSM); or a degree of substitution (DS) comprised from 1.17 to 2.33 to reduce plastic shrinkage and/or reduce plastic cracking in concrete.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: October 9, 2012
    Assignee: Lafarge
    Inventors: Constantinos Xenopoulos, Isabelle Sgro
  • Patent number: 8277556
    Abstract: Lightweight cementitious foams of the invention have excellent dynamic and dimensional stability due to use of foaming system comprising polycarboxylate surfactant foam generating agent, foam stabilizer (e.g., PVOH), and shrinkage reducing admixture to inhibit plastic shrinkage and micro-cracking of cement. The foaming system can be used in conventional cement mortars or concretes as well as with exemplary cementitious slurry systems of the invention, which include an expansive agent, a cross-linking agent for the foam stabilizer. Microfibers can be used in the foam, slurry, or both, to prevent micro-cracking. Cementitious foams can be made without use of autoclave or lightweight aggregates to achieve enhanced compressive strength and thermal insulation properties that compare favorably with conventional foams and insulation materials at comparable densities.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: October 2, 2012
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Neal S. Berke, Jordan S. Merritt, Lianfang Li, Antonio J. Aldykiewicz, Jr., Robert A. Wiercinski, Michael D. Morgan
  • Patent number: 8241419
    Abstract: A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with oil which is bound to the fiber by a retention aid. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: August 14, 2012
    Assignee: Weyerhaeuser NR Company
    Inventors: Robert T Hamilton, David J O'Callaghan, Hugh West
  • Publication number: 20110274811
    Abstract: A process for reducing the variability in commercial production lots of cellulose gums, such as cellulose ethers, in which inert substances, such as sucrose, salt, maltodextrin, or other relatively are blended with the cellulose gums to create products that exhibit less variability in certain a functional property, such as aqueous viscosity than commercial production lots which have not been subjected to the blending process.
    Type: Application
    Filed: May 5, 2011
    Publication date: November 10, 2011
    Inventors: Mark Edward Hines, Dianne Patricia Leipold
  • Patent number: 8029616
    Abstract: A cover composition that can be applied to a bulk material pile, such as landfill refuse, to protect the pile from wind, precipitation, and access by animals and insects is provided. The cover composition is a mixture of a liquid, typically, water; bentonite clay; and synthetic fibers. The composition may be enhanced by the addition of one or more of the following additives: Portland cement, pregelatinized wheat starch, synthetic polymers, soda ash, and latex paint. Unlike prior art cover compositions, the disclosed composition adheres well to waste material, most notably plastics, whereby the composition is easy to apply and provides a substantially uniform, durable protective cover to landfill refuse piles and other bulk materials. Methods of applying the composition to bulk material piles are also disclosed.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: October 4, 2011
    Assignee: LSC Environmental Products, LLC
    Inventors: David L. Hansen, Dennis W. Super
  • Patent number: 8002890
    Abstract: A method of preparing a mortar composition, comprising mixing of mortar materials comprising at least 25 to 45 parts by weight of high-early-strength portland cement, 40 to 60 parts by weight of sand, 0.05 to 0.12 parts by weight of polycarboxylic acid-based powdered water reducing agent, and 10 to 25 parts by weight of water, and not comprising any organic adhesives. Mixing of the mortar materials is achieved by agitating the same in an agitator until agitating load rapidly decreases. The mortar composition prepared in accordance with this invention has excellent ability to infiltrate into the surface to be adhered, and high bonding strength after hardening.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: August 23, 2011
    Assignee: Advanced Technology Co., Ltd.
    Inventors: Isao Kamada, Takeshi Yano
  • Patent number: 7985293
    Abstract: A hydraulic composition is provided. This composition exhibits an improved workability in its coating with a trowel, and accordingly, an improved working efficiency with no adverse effects on its physical properties. The hydraulic composition comprises at least one surfactant selected from anionic surfactants having foaming ability (group A), at least one surfactant selected from surfactants which are nonionic antifoaming agents (group B), and a water-soluble cellulose ether. The surfactants of group A and group B are respectively added at 0.000005 to 0.004% by weight (solid content) in relation to the powder ingredients in the hydraulic composition, and the water-soluble cellulose ether is added at 0.02 to 1.2% by weight of the hydraulic composition.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: July 26, 2011
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Sasage, Tsutomu Yamakawa
  • Patent number: 7909927
    Abstract: Rheology modifying admixture comprising a) from 80 to 99% w/w of hydroxyalkyl guar, cellulose ether, or mixture thereof; b) from 1 to 20% w/w of biopolymer selected from diutan gum and welan gum, and hydraulic compositions containing the rheology modifier admixture together with a superplasticizer.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: March 22, 2011
    Assignee: Lamberti Spa
    Inventors: Giampietro Margheritis, Eva Baldaro, Luca Perrone, Giuseppe Li Bassi
  • Patent number: 7905956
    Abstract: A fiber reinforced cement composition having the following raw material composition is provided to manufacture a fiber reinforced cement product which is excellent in bending strength, dimension stability, handling property, flexibility performance, and processability such as nail performance, as well as to provide a process for manufacturing the product. Namely, the fiber reinforced cement composition comprises a hydraulic inorganic material, a siliceous material and a woody reinforcement in a mass ratio of CaO to SiO2 contained in the hydraulic inorganic material and the siliceous material in the raw materials in a range of from 23:77 to 60:40.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: March 15, 2011
    Assignee: Nichiha Corporation
    Inventors: Kazuo Utagaki, Tadashi Sugita, Satoshi Takayama
  • Patent number: 7901506
    Abstract: In this invention a cementitious capillary crystalline waterproof material with an eka-molecular sieve structure and its manufacturing method is disclosed. The major ingredient of this material is Portland cement; the accessories include silicon dioxide, alumina, magnesia, calcium sulphonate, methlycellulose, quick-setting agent and sodium aluminate, etc. Put separately major ingredient and accessories premixed in given proportion separately into the major ingredient bin and the accessory bins. The major ingredient passing through an impulse flowmeter is carried to the dosing machine; and in the same time, the premixed accessories are automatically weighed by the weighing device using gewichtsabnahme method when they are carried to the above dosing machine; they are mixed in the premixing machine and the refine-mixing machine and prepared to the product. The product is mixed with water and forms slurry.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: March 8, 2011
    Inventor: Huidong Zhang
  • Patent number: 7862655
    Abstract: Of the many methods and compositions provided herein, one method comprises providing a cement composition, wherein the cement composition comprises a cementitious component and an additive comprising a polymer, a phosphorus component, a polyvalent metal ion, an oil-based liquid, and a surfactant; introducing the cement composition into at least a portion of the subterranean formation; and allowing the cement composition to at least partially set therein. Another method provided herein comprises providing a cement composition that comprises a cementitious component and an additive comprising a polymer, a phosphorus component, a polyvalent metal ion, an oil-based liquid, and a surfactant; introducing the cement composition into a void located in a pipe string; and allowing the cement composition to at least partially set therein.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: January 4, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Lance Brothers, Bobby J. King, Gary P. Funkhouser
  • Patent number: 7857906
    Abstract: A fiber-reinforced building material in one embodiment incorporates cellulose fibers that are chemically treated with a dispersant to impart improved dispersibility to the fibers. The fibers are treated with a dispersant which deactivates the hydroxyl sites of the fiber surfaces and in some cases, making the fiber surface more hydrophobic. The dispersant inhibits the hydroxyl groups on the cellulose fiber surface from bonding with hydroxyl groups of other fibers and from bonding with hydroxyl groups of the same fiber, thereby significantly reducing inter-fiber and intra-fiber hydrogen bonding. The treated fibers can be readily dispersed and uniformly distributed throughout a mixture without re-clustering or reclumping once the mechanical mixing action stops.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: December 28, 2010
    Assignee: James Hardie Technology Limited
    Inventors: Caidian Luo, Donald J. Merkley
  • Patent number: 7740701
    Abstract: A hydraulically setting mortar composition containing at least one hydraulically setting component, at least one lightweight filler, at least one cellulose ether, at least one setting retarder and optionally further additional additives, particularly fillers and/or dispersion powders. In addition, a premix for producing a hydraulically setting mortar composition is described containing at least one lightweight filler and at least one cellulose ether and/or a setting retarder. As a result of the inventive ratio of these components, it is possible with much lower lightweight filler contents to obtain more cost effective mortar formulations and/or improved use characteristics, such as e.g. increased adhesive tensile strengths and/or an increased open time. The hydraulically setting mortar composition can be used in gypsum, gypsum-lime, lime-cement, cement and/or thermal plasters, tile adhesives, masonry mortars, full heat protection mortars, surfacers, self-levelling floor materials or repair mortars.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: June 22, 2010
    Assignee: Akzo Nobel N.V.
    Inventor: Hanspeter Waser
  • Publication number: 20100075167
    Abstract: A composition for the manufacture of a gypsum board comprising hydrated pregelatinized starch and stucco with 0.4 to 3 wt. % of starch based on the stucco weight is disclosed. The composition provides enhanced strength in the absence of other strengthening agents.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 25, 2010
    Applicant: Georgia-Pacific Gypsum LLC
    Inventors: Stuart Brandon Gilley, Hubert C. Francis, Carla Greaves Jones, Fabio E. Esguerra
  • Patent number: 7658794
    Abstract: This invention relates to a formulation with the addition of low density additives of volcanic ash, hollow ceramic microspheres or a combination of microspheres and volcanic ash or other low density additives into cementitious cellulose fiber reinforced building materials. This formulation is advantageously lightweight or low density compared as compared to current fiber cement products without the increased moisture expansion and freeze-thaw degradation usually associated with the addition of lightweight inorganic materials to fiber cement mixes. The low density additives also give the material improved thermal dimensional stability.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: February 9, 2010
    Assignee: James Hardie Technology Limited
    Inventors: James A. Gleeson, Kalynne H. Paradis, Brian P. Sloane, David L. Melmeth, Dean M. Seligman
  • Patent number: 7621087
    Abstract: The object of the present invention is to provide an inorganic board which has high mechanical strength, much improved dimensional stability, freezing and fusion resistance. To attain said object the present invention provides an inorganic board made of a cured material being a raw material mixture containing a cementitious inorganic material, a silica containing material, a woody reinforcement, and a water soluble synthetic resin, wherein the mass ratio of said cementitious inorganic material and said silica containing material is set to be in the range of between 35:65 and 45:55, to promote the hardening reaction of said inorganic board, and to reduce the unreacted materials, solving the problem of the retardation of the cement hardening by said water soluble synthetic resin.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: November 24, 2009
    Assignee: Nichiha Corporation
    Inventors: Kazuo Utagaki, Tadashi Sugita
  • Patent number: 7621995
    Abstract: 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: Grant
    Filed: December 19, 2005
    Date of Patent: November 24, 2009
    Assignee: Jack B. Parson Companies
    Inventor: Lonnie James Gray
  • Patent number: 7588635
    Abstract: Hydraulic compositions comprising a setting accelerator, a water-soluble cellulose ether having a degree of alkyl substitution of 1.6 to 2.5 which is a water-soluble alkyl cellulose or a water-soluble hydroxyalkyl alkyl cellulose, and water are useful as self-leveling compositions having an excellent self-leveling capability, a minimal change with time of fluidity, and a short setting time, or as cement mortar compositions having a long open time and a short setting time.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: September 15, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Tsutomu Yamakawa, Yoshiaki Sasage
  • Patent number: 7544243
    Abstract: A cover composition that can be applied to a bulk material pile, such as landfill refuse, to protect the pile from wind, precipitation, and access by animals and insects is provided. The cover composition is a mixture of a liquid, typically, water; bentonite clay; and synthetic fibers. The composition may be enhanced by the addition of one or more of the following additives: Portland cement, pregelatinized wheat starch, synthetic polymers, soda ash, and latex paint. Unlike prior art cover compositions, the disclosed composition adheres well to waste material, most notably plastics, whereby the composition is easy to apply and provides a substantially uniform, durable protective cover to landfill refuse piles and other bulk materials. Methods of applying the composition to bulk material piles are also disclosed.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: June 9, 2009
    Assignee: Landfill Service Corporation
    Inventors: David L. Hansen, Dennis W. Super
  • Patent number: 7462236
    Abstract: Methods and compositions of the invention involve the use of crude intermediate fermentation broth, derived from industrial glucose fermentation processes prior to completion of purification steps, as additives and admixtures for cementitious compositions.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: December 9, 2008
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Byong-Wa Chun, Ara A. Jeknavorian, Charlotte B. Porteneuve
  • Patent number: 7449429
    Abstract: An initial chemical composition comprising selected surfactants, dispersants, and degreasers that liquefy, disperse, demulsify, degrease, inhibit corrosion and scale formation, and lower the pour point of a petroleum, coal, Fischer-Tropsch synthesized, or naturally occurring paraffin-based wax and asphaltene. Such a product is capable of converting crystalline wax (paraffin) in, for example, slop oil into an amorphous form of wax at room temperature, allowing the wax to be dissolved in, for example, crude oil without the need for heating, and maintaining it in solution at room temperature, substantially reducing, indeed in some applications, preventing, for example, wax build-up in pipelines, processing and transportation equipment, etc., and the recovery of the hydrocarbons in the slop oil. In a second aspect of the invention, the pre-blend addition of a hydrotrope-demulsifier, a chelating agent and a wax plasticizer can result in a BS&W of zero for the recovered hydrocarbon blend.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: November 11, 2008
    Assignee: Malcera, L.L.C.
    Inventor: Gordon K. Goldman
  • Patent number: 7435293
    Abstract: Cement compositions, and more particularly, cement compositions that include maltodextrin. An example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin. Another example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin and an organic acid. Another example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin and tartaric acid.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: October 14, 2008
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William J. Caveny, Rickey L. Morgan
  • Patent number: 7422061
    Abstract: Nonionic derivatized starch of varying degrees of substitution may be used as a fluid loss additive for well bore cementing operations. A well bore cementing composition may include a cement and a nonionic derivatized starch, the nonionic derivatized starch in a concentration in the cement to provide a fluid loss of less than 200 cc/30 min. A method for cementing subterranean zones penetrated by a well bore may include: providing a cement slurry including mix water, hydraulic cement and a nonionic derivatized starch as an additive for fluid loss control in well cementing applications; pumping the cement slurry into a well; and holding the cement slurry in place until it sets.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: September 9, 2008
    Assignee: Calfrac Well Services Ltd.
    Inventors: Alan L. Jones, David P. Horton
  • Publication number: 20080196629
    Abstract: Hydraulic compositions comprising a setting accelerator, a water-soluble cellulose ether having a degree of alkyl substitution of 1.6 to 2.5 which is a water-soluble alkyl cellulose or a water-soluble hydroxyalkyl alkyl cellulose, and water are useful as self-leveling compositions having an excellent self-leveling capability, a minimal change with time of fluidity, and a short setting time, or as cement mortar compositions having a long open time and a short setting time.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 21, 2008
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Tsutomu YAMAKAWA, Yoshiaki SASAGE
  • Patent number: 7399355
    Abstract: A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the polymer is a polyvinyl alcohol, and the sugar is a sugar alcohol such as sorbitol.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: July 15, 2008
    Assignees: Halliburton Energy Services, Inc., BASF Contruction Polymers GmbH
    Inventors: Michael J. Szymanski, Samuel J. Lewis, Christian Spindler, Andrea Fenchl
  • Patent number: 7393407
    Abstract: The present invention relates to a slurry containing water, amorphous silica panicles having a particle size less than 1 micron and silica flour with a particle size between 2-200 microns. In order to stablize the slurry, the slurry contains a polysaccharide. The invention further relates to a method for the production of a slurry containing water, amorphous silica having a particle size below 1 micron, and silica flour with a particle size between 2-200 microns, where a polysaccharide is added to a slurry of water and amorphous silica, whereafter the silica flour is mixed into the slurry of amorphous silica.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: July 1, 2008
    Assignee: Elkem ASA
    Inventors: Eldar O Dingsoyr, Magne Dastol, Cor Oldenziel, Bjorn Vassoy
  • Patent number: 7344593
    Abstract: A fiber-reinforced building material in one embodiment incorporates cellulose fibers that are chemically treated with a dispersant to impart improved dispersibility to the fibers. The fibers are treated with a dispersant which deactivates the hydroxyl sites of the fiber surfaces and in some cases, making the fiber surface more hydrophobic. The dispersant inhibits the hydroxyl groups on the cellulose fiber surface from bonding with hydroxyl groups of other fibers and from bonding with hydroxyl groups of the same fiber, thereby significantly reducing inter-fiber and intra-fiber hydrogen bonding. The treated fibers can be readily dispersed and uniformly distributed throughout a mixture without re-clustering or reclumping once the mechanical mixing action stops.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: March 18, 2008
    Assignee: James Hardie International Finance B.V.
    Inventors: Caidian Luo, Donald J. Merkley
  • Patent number: 7326290
    Abstract: The invention relates to a setting accelerator for a composition comprising Portland cement, in the form of a slurry comprising at least one calcium aluminate, 0.5 4%, preferably 0.6 2.3% of an aluminous cement setting inhibitor by weight in relation to the overall weight of the calcium alumnate, and an anti-sedimentation agent.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: February 5, 2008
    Assignee: Kerneos
    Inventors: Dominique Guinot, Eric Charpentier, Eric Frier
  • Patent number: 7303625
    Abstract: Treatment fluid compositions, and more particularly, treatment fluid compositions that include chlorinated carbohydrates. An example is a treatment fluid that includes: a hydraulic cement; water; and a chlorinated carbohydrate. Another example of a treatment fluid is a cement composition including: a hydraulic cement; water; and an additive including a chlorinated carbohydrate and a tartaric acid.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: December 4, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William J. Caveny, Rickey L. Morgan