Organic Material Containing Patents (Class 106/774)
-
Patent number: 8926855Abstract: Building materials include a dampening layer which contains a plaster and a viscoelastic polymer, such as polyvinyl butyral. The dampening layer may also include a barium salt. Methods of making a sound dampening material include providing a plaster mixture. The mixture may include a viscoelastic polymer and/or a barium salt. The plaster mixture is combined with water and/or a viscoelastic polymer dispersion, to form a slurry. The slurry is applied to a surface and set to form a sound dampening layer.Type: GrantFiled: December 20, 2012Date of Patent: January 6, 2015Assignee: Georgia-Pacific Gypsum LLCInventors: Vincent B. Thomas, Jeffrey Thomas Fields
-
Publication number: 20140302280Abstract: A gypsum panel that incorporates a plant fiber other than paper is disclosed. The plant fiber material may be in the form of a facing material adhered to at least one side of the gypsum panel or in the form of loose fibers integrated with the gypsum panel as a matrix or both. Further, the plant fiber may be combined with conventional gypsum panel additives, is fully recyclable and environmentally sustainable. The present invention further relates to a method of making such a gypsum panel.Type: ApplicationFiled: April 25, 2012Publication date: October 9, 2014Inventors: Keshav S. Gautam, Samuel C. Baer, Hubert C. Francis, Micheal S. Lerch
-
Publication number: 20140144350Abstract: 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: ApplicationFiled: July 9, 2012Publication date: May 29, 2014Applicant: HOLCIM TECHNOLOGY LTD.Inventors: Winnie Matthes, Zarina Castelltort, Thomas Matschei, Moussa Baalbaki
-
Patent number: 8444787Abstract: Provided are methods and systems for introducing a wet gypsum accelerator or other high viscosity production additive to an aqueous dispersion of calcined gypsum in a discharge apparatus downstream of a stucco mixer in which the dispersion was prepared. These methods and systems are useful in the production of various gypsum products such as board including wallboard and ceiling tiles.Type: GrantFiled: August 11, 2011Date of Patent: May 21, 2013Assignee: United States Gypsum CompanyInventors: James R. Wittbold, W. David Song
-
Publication number: 20120234540Abstract: 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: ApplicationFiled: June 1, 2012Publication date: September 20, 2012Applicant: Halliburton Energy Services, Inc.Inventors: Sam Lewis, Rita McKinley, Russell Fitzgerald
-
Patent number: 8057595Abstract: The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous reinforcing fibers or an array of organized fibers in the form of mesh. Advantageously, the discrete fibers have a specific aspect ratio (length/diameter) from about 50:1 to about 1000:1. The addition of a small amount of discrete fibers and/or the continuous reinforcing fibers or fiber mesh can cause drastic increases in certain mechanical properties including flexural strength, flexural toughness, and/or screw pullout strength.Type: GrantFiled: November 3, 2009Date of Patent: November 15, 2011Assignee: Synthes USA, LLCInventors: Bryan Monro Armitage, Ira Ison, Mark Fulmer, Sean Kerr, Michael Lehmicke, Patrick Leamy, William Schiffer
-
Patent number: 8016960Abstract: Provided are methods and systems for introducing a wet gypsum accelerator or other high viscosity production additive to an aqueous dispersion of calcined gypsum in a discharge apparatus downstream of a stucco mixer in which the dispersion was prepared. These methods and systems are useful in the production of various gypsum products such as board including wallboard and ceiling tiles.Type: GrantFiled: April 27, 2005Date of Patent: September 13, 2011Assignee: United States Gypsum CompanyInventors: James R. Wittbold, W. David Song
-
Patent number: 7628851Abstract: The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous reinforcing fibers or an array of organized fibers in the form of mesh. Advantageously, the discrete fibers have a specific aspect ratio (length/diameter) from about 50:1 to about 1000:1. The addition of a small amount of discrete fibers and/or the continuous reinforcing fibers or fiber mesh can cause drastic increases in certain mechanical properties including flexural strength, flexural toughness, and/or screw pullout strength.Type: GrantFiled: May 30, 2008Date of Patent: December 8, 2009Assignee: Synthes USA, LLCInventors: Bryan Monro Armitage, Ira C Ison, Mark Thomas Fulmer, Sean Hamilton Kerr, Michael Lehmicke, Patrick Leamy, William Schiffer
-
Patent number: 7608347Abstract: An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the polycarboxylate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.Type: GrantFiled: June 9, 2006Date of Patent: October 27, 2009Assignee: United States Gypsum CompanyInventors: Dennis M. Lettkeman, Michael P. Shake, Qingxia Liu, John W. Wilson, Brian Randall, David R. Blackburn
-
Patent number: 7556685Abstract: The invention is a composition of an architectural papier-mâché, and articles made therewith. Articles formed from using the architectural papier-mâché have excellent weather resistance, and can be used outdoors, as well as indoors. The composition is comprised of cellulose insulation and a joint compound. Cellulose insulation is a paper-based material, like newsprint or phonebook paper that is shredded and chemically treated with boric acid, which imparts resistance to mold, mildew, fungus, insects, moisture and flammable combustion.Type: GrantFiled: September 3, 2005Date of Patent: July 7, 2009Assignee: Nicholson-Goheen, LLCInventors: Jared Morris Nicholson, Sharon Anklin Goheen
-
Publication number: 20080087198Abstract: A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a slurry, casting the slurry into a product, and drying the product.Type: ApplicationFiled: May 16, 2007Publication date: April 17, 2008Inventors: Steven A. Schwartz, Sallie J. Lee, Frank J. Liotta, Robert M. Arrell
-
Patent number: 7285166Abstract: 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: GrantFiled: May 11, 2005Date of Patent: October 23, 2007Assignee: 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: 7070647Abstract: A novel cement is alkalescent, capable of solidifying a wide range of soil and applicable to biological environment. The cement composition contains 100 parts by weight of magnesium oxide, 5 to 25% by weight of at least one of silicic acid, alumina and iron oxide, 3 to 35 parts by weight of a phosphate, 2 to 30 parts by weight of gypsum and 0.005 to 7 parts by weight of a hydroxycarboxylic acid or a ketocarboxylic acid.Type: GrantFiled: February 21, 2001Date of Patent: July 4, 2006Assignee: National Institute for Rural EngineeringInventors: Shinsaku Fujimori, Shigeji Kobori
-
Patent number: 6989057Abstract: 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: GrantFiled: December 10, 2002Date of Patent: January 24, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
-
Patent number: 6824606Abstract: A water retaining additive for conglomerate building materials, free of cellulose-like derivatives, that comprises at least a rheological grade clay, preferably sepiolite, and a modified natural gum such as guar gum, as well as conglomerate compositions that contain the additive, as well as the use of the additive for different constructions materials comprised of gypsum and special mortars are described.Type: GrantFiled: December 19, 2000Date of Patent: November 30, 2004Assignee: Tolsa, S.A.Inventors: Antonio Alvarez Berenguer, Francisco Javier Limpo Orozco, Bernardo Enrique Del Valle Álvarez, Manuel Hidalgo Martín
-
Publication number: 20040112600Abstract: 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: ApplicationFiled: October 15, 2003Publication date: June 17, 2004Inventors: 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
-
Publication number: 20040107877Abstract: 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: ApplicationFiled: December 10, 2002Publication date: June 10, 2004Applicant: Halliburton Energy Services, Inc.Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
-
Patent number: 6740395Abstract: A rough-surfaced substrate, such as a fiberboard, is provided with a smoother surface by applying a coating comprising calcium sulfate hemihydrate which has been prevented from hydrating to gypsum by set preventer, and which sets when brought into contact with a set initiator, e.g. aluminum sulfate, preferably present on the surface of the substrate.Type: GrantFiled: December 21, 2001Date of Patent: May 25, 2004Assignee: United States Gypsum CompanyInventors: John D. Halm, Aida L. Carbo, Michael R. Lynn, Richard B. Stevens, Charles J. Miller, Peter M. Attard, Therese A. Fults
-
Patent number: 6648965Abstract: Structural components for a fire door comprising a core and edge banding and other structural components, the components comprising gypsum, expanded perlite, and cement, and having a density between about 60 and 80 lbs./ft.3. Also, a method by which the structural components are made and a fire door comprising the components.Type: GrantFiled: July 6, 2001Date of Patent: November 18, 2003Assignee: G-P Gypsum CorporationInventor: Donald F. Klus
-
Patent number: 6641658Abstract: A rapid setting cementitious composition useful for making cement boards employs an insoluble form of anhydrous calcium sulfate (anhydrite) to accelerate setting and to permit reducing the amount of high alumina cement usage.Type: GrantFiled: July 3, 2002Date of Patent: November 4, 2003Assignee: United States Gypsum CompanyInventor: Ashish Dubey
-
Patent number: 6616753Abstract: Methods and compositions for sealing subterranean zones penetrated by well bores are provided. The methods basically comprise the steps of introducing a sealing composition into the subterranean zone comprised of a hydraulic cement, sufficient water to form a slurry and a rapidly acting thixotropy providing gelling agent, and allowing the sealing composition to remain at rest in the zone whereby the sealing composition rapidly gels and then sets into a hard impermeable mass therein.Type: GrantFiled: December 11, 2001Date of Patent: September 9, 2003Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Karen Luke
-
Patent number: 6572698Abstract: An activated aluminosilicate binder containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts is disclosed. The aluminosilicates are selected from a group consisting of blast furnace slag, clay, marl and industrial by-products, such as fly ash, and has an Al2O3 content greater than 5% by weight. Blast furnace slag is present in an amount less than 35% by weight, and cement kiln dust, in an amount of from 1 to 20% by weight, is added to the mixture as an activator.Type: GrantFiled: January 2, 2001Date of Patent: June 3, 2003Assignee: International Mineral Technology AGInventor: Suz-Chung Ko
-
Patent number: 6554893Abstract: The present invention describes an improved building material composition, useful for example as a fire door core and to improved methods of making this composition. The building material of the present invention consists essentially of expanded perlite, a fireproof binder, clay or vermiculite, and optionally diatomaceous earth, one or more viscosity-enhancing components, reinforcement fibers, and a plasticizer or mixtures thereof. The method of making this improved composition is a semi-continuous batch press method wherein at least the expanded perlite, fireproof binder, and clay or vermiculite are mixed; the mixture compressed in a mold, and the compressed mixture dried.Type: GrantFiled: November 2, 2001Date of Patent: April 29, 2003Assignee: Georgia-Pacific CorporationInventor: Donald F. Klus
-
Patent number: 6475275Abstract: A cement composition contains 35-85% by weight of a cement, 3-15% by weight of a clay, 1-50% by weight of an aggregate and/or a fibrous material, and 0.2-5% by weight of a high efficiency retarder. A benefit of the present invention is that equipment used to apply cement compositions need not be cleaned every night when used on a construction site.Type: GrantFiled: October 21, 1999Date of Patent: November 5, 2002Assignee: Isolatek InternationalInventors: Edward Nebesnak, Robert Ostertog
-
Patent number: 6406535Abstract: A constructional finished wallboard is formed of a mixture including 50 to 65 wt. % of dried shirasu, 30 to 40 wt. % of a plaster component, 3 to 10 wt. % of a clay component, 5 to 10 wt. % of shirasu balloons, 0.8 to 2 wt. % of a bond reinforcing component, 0.01 to 3 wt. % of a color pigment, and 1 to 5 wt. % of fibers for plaster. In preparing the wallboard, after preparing the mixture, an appropriate amount of water is added to the mixture to mix together, which is applied onto a substrate. Then, the surface of the mixture on the substrate is finished, followed by drying to thereby form the constructional finished board.Type: GrantFiled: September 14, 2000Date of Patent: June 18, 2002Assignee: Takachiho Corp.Inventor: Masahiro Shintome
-
Patent number: 6387172Abstract: A set gypsum composition and methods for the preparation thereof are disclosed. The set gypsum composition comprises a continuous phase of interlocking set gypsum matrix having an enhanced water voids volume and/or is prepared from a mixture (e.g., slurry) comprising an elevated ratio of water to calcined gypsum. Also disclosed is an article comprising the set gypsum composition.Type: GrantFiled: April 25, 2000Date of Patent: May 14, 2002Assignee: United States Gypsum CompanyInventors: Qiang Yu, Srinivas Veeramasuneni, Frederick Thomas Jones
-
Patent number: 6379455Abstract: A chemical agent for improving the engineering properties of soil includes a mixture of cementitious pozzalans (5 to 60% by mass), calcium sulphate (20 to 80% by mass), an oxide of calcium (15 to 50% by mass) and silica oxide (1 to 30% by weight). Monofilament fibers can also be included in the mix.Type: GrantFiled: July 20, 2000Date of Patent: April 30, 2002Assignee: Road Building International (Barbados) LimitedInventor: Josy Cohen
-
Patent number: 6350304Abstract: The construction material comprises a construction base material and microcapsules inside of which liquid containing hinokitiol is incorporated and a plurality of which are to be mixed into the construction base material and the liquid in the microcapsules transudes into the construction base material because the microcapsules collapse due to at least change with time.Type: GrantFiled: October 30, 2000Date of Patent: February 26, 2002Assignee: Topics Co., Ltd.Inventor: Eisaku Tozaka
-
Patent number: 6340389Abstract: The present invention describes improved fire door cores and improved methods of making these fire door cores. The fire door core of the present invention comprises expanded perlite, a fireproof binder, fire clay or vermiculite, and optionally one or more viscosity-enhancing components, fiberglass, or both. The method of making this improved fire door core is a semi-continuous batch press method wherein the expanded perlite, an fireproof binder, fire clay or vermiculite are mixed; the mixture compressed in a mold, and the compressed mixture dried.Type: GrantFiled: December 18, 2000Date of Patent: January 22, 2002Assignee: G-P Gypsum CorporationInventor: Donald F. Klus
-
Patent number: 6299970Abstract: Fiberboards are provided containing at least about 65 wt. % calcium sulfate dihydrate derived from hemihydrate or anhydrous gypsum, and at least about 7 wt. % pulped paper fibers. The boards are capable of being formed into structural members having superior mechanical properties and/or fire resistance, including screw-holding capacities in excess of 650 lbs.Type: GrantFiled: May 19, 1999Date of Patent: October 9, 2001Assignee: Georgia-Pacific Gypsum CorporationInventors: Turner W. Richards, Hubert C. Francis, George F. Fowler
-
Patent number: 6277190Abstract: Mortars and plasters containing additives which are alcohols having from 8 to 72 carbon atoms adsorbed on solid supports, and processes for the preparation of the additives.Type: GrantFiled: January 21, 2000Date of Patent: August 21, 2001Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Heinz-Guenther Schulte, Wolfgang Gress, Ralf Neumann, Sarantis Moustakas
-
Patent number: 6200380Abstract: A method of continuously producing a cementitious composition such as joint compound includes pre-mixing at least two dry ingredients and pre-mixing at least two liquid ingredients. The ingredients are provided in a continuous mixing apparatus and at least substantially continuously blended.Type: GrantFiled: February 16, 1999Date of Patent: March 13, 2001Assignee: National Gypsum CompanyInventors: Ronald S. Finkelstein, Jashbhai M. Patel
-
Patent number: 6162288Abstract: Improved sprayable gypsum-based fireproofing composition comprising a lightweight aggregate and a set retarding agent in an amount effective to delay the setting of said composition for at least 24 hours and preferably for at least 72-96 hours without causing the composition to swell or shrink or to cause a salt layer to form on the composition when it is spray-applied. The fireproofing composition can retain fluidity in conventional spray hoses overnight and yet is capable of being injected with a set accelerator, such as aluminum sulfate, on the next day or on a successive day when spray-applied onto a substrate.Type: GrantFiled: May 19, 1999Date of Patent: December 19, 2000Assignee: W. R. Grace & Co.-Conn.Inventors: Lawrence J. Kindt, Dennis M. Hilton, Richard P. Perito
-
Patent number: 6096373Abstract: A sprayable composition and a method of protecting material with the composition is disclosed. The composition comprises a bulking/setting material, a water soluble polymer and water to provide a cover layer which, after spraying, is tough, flexible and water-repellent. Other materials such as clay, fibrous material, a foam producing agent and a hardening retarder can be included in the composition. The composition is effective as a cover layer over material such as soil, refuse at a dump site, stockpiled material, a temporary cover for remediation sites, or tire piles.Type: GrantFiled: July 23, 1996Date of Patent: August 1, 2000Inventors: Thomas J. Nachtman, John H. Hull, Patrick O'Shea
-
Patent number: 6007620Abstract: A process of manufacturing blended white cement comprises the following steps: (a) providing anhydrous alumino-silicate, diatomaceous earth, and/or other natural pozzolans; (b) providing white clinker; (c) providing gypsum; and (d) combining and grinding the anhydrous alumino-silicate; the white clinker, and the gypsum together to form the blended white cement.Type: GrantFiled: January 29, 1997Date of Patent: December 28, 1999Inventors: Timothy S. Folks, Patrick M. Hill, Frank T. Sheets, III, Richard F. Ball, Joseph R. Sisneros
-
Patent number: 5997632Abstract: The present invention is directed to blended hydraulic cement compositions which are formed with subbituminous fly ash. In one embodiment, the cement composition comprises from about 0.1 wt. % to about 7 wt. % of a retarding agent; from about 0.1 wt. % to about 4 wt. % potassium carbonate; from about 0.1 wt. % to about 4 wt. % citric acid; from about 0.1 wt. % to about 5 wt. % lithium carbonate; and from about 85 wt. % to about 99.7 wt. % of a subbituminous fly ash. In another embodiment, the cement composition comprises from about 0.1 wt. % to about 7 wt % of a retarding agent; from about 0.1 wt. % to about 6 wt. % of an alkali source selected from the group consisting of potassium carbonate, potassium hydroxide and blends thereof; from about 0.1 wt. % to about 4 wt. % citric acid; from about 0.1 wt. % to about 5 wt. % lithium carbonate; from about 25 wt. % to about 91.7 wt. % of a first subbituminous fly ash having a lime content; and from about 8 wt. % to about 60 wt.Type: GrantFiled: January 30, 1998Date of Patent: December 7, 1999Assignee: Mineral Resources Technologies, LLCInventor: Robert William Styron
-
Patent number: 5961712Abstract: The invention provides cementitious mixtures, particularly for use as shotcrete binding materials. The resultant shotcrete has characteristics of rapid setting as low as 5 to 10 minutes, high early compressive strength (5 to 25 MPa in two hours curing, 20 to 60 MPa in one day curing), high permanent compressive strength and negligible shrinkage. High aluminous content roasted cement clinkers with gypsum, anhydrite, lime, limestone, bentonite and other additives are used in the mixtures. There are especially suitable for use in shotcrete engineering. The methods of using the improved shotcrete are similar to those of using Portland cement, with significantly decreased rebound at site.Type: GrantFiled: July 18, 1996Date of Patent: October 5, 1999Assignee: Sungeric International, Inc.Inventors: Henghu Sun, Shuqin Li, Weirui Xu
-
Patent number: 5945208Abstract: Fiberboards are provided containing at least about 65 wt. % calcium sulfate dihydrate derived from hemihydrate or anhydrous gypsum, and at least about 7 wt. % pulped paper fibers. The boards are capable of being formed into structural members having superior mechanical properties and/or fire resistance, including screw-holding capacities in excess of 650 lbs.Type: GrantFiled: June 7, 1995Date of Patent: August 31, 1999Assignee: G-P Gypsum CorporationInventors: Turner W. Richards, Hubert C. Francis, George F. Fowler
-
Patent number: 5788762Abstract: Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at least about 1000 psi; and (3) low alkali functionality. By increasing the amount of calcined clay, the resulting cementitious system will sequentially gain the following properties: (1) alkali non-reactiveness; (2) alkali resistance; and (3) low chloride permeability. Novel methods of preparing the novel cementitious systems of this invention are also disclosed. The novel methods not only reduce production costs by decreasing fuel and raw material consumption, but they also allow the cement producer to proactively address significant environmental concerns related to the manufacturing process.Type: GrantFiled: January 27, 1997Date of Patent: August 4, 1998Assignee: Ash Grove Cement CompanyInventors: Gregory S. Barger, Eric R. Hansen
-
Patent number: 5749963Abstract: The hardenable mortar composition consists of a bonding agent component including a hydraulic bonding agent, such as cement, gypsum or mortar, and a paste-forming agent consisting of a liquid solvent inert with respect to the hydraulic bonding agent, and an aqueous component kept separate from the bonding agent component until the two components are mixed to form a hardened mortar composition. The aqueous component includes water and a hydrophobic adsorbent or absorbent. The hydrophobic adsorbent or absorbent is included in the aqueous component to avoid the emergence of the paste-forming agent, which is at the very least unsightly, when the aqueous component is mixed with the bonding agent component. The hydrophobic adsorbent or absorbent binds the paste-forming agent which would otherwise escape during mixing and remains as an inert additive in the setting mortar composition, without reducing the hardness thereof.Type: GrantFiled: February 13, 1997Date of Patent: May 12, 1998Assignee: fischerwerke, Artur Fischer GmbH & Co. KGInventors: Norbert Arnold, Willi Haug, Stefan Lind
-
Patent number: 5707443Abstract: A grouting material which is self-dispersing when brought into contact with a volume of water containing liquor or slurry and is settable to a solid mass after such dispersion, the material being in the form of self-dispersing granules or pellets and comprising a blend of component (A): a cementive constituent forming from 10 per cent to 95 per cent by weight of the composition; component (B): a dispersing constituent forming from 2 per cent to 75 per cent by weight of the composition; optional component (C): a swelling constituent which forms from 0 per cent to 50 per cent by weight of the composition; and component (D): a binder constituent which forms from 0.1 per cent to 10 per cent by weight of the composition; the percentages of components A, B, C and D adding to 100 per cent.Type: GrantFiled: October 11, 1995Date of Patent: January 13, 1998Assignee: British Nuclear FuelsInventors: David John Brown, Stephen Geoffrey Higson
-
Patent number: 5651816Abstract: Cement comprising hydraulic cement and polymer precursor such as alcohol-soluble phenol resin precursor that is substantially anhydrous and generates water by polymerization.Type: GrantFiled: July 22, 1996Date of Patent: July 29, 1997Assignee: Maeta Concrete Industry Ltd.Inventors: Tadashi Kobayashi, Game Kankanamge Dinilprem Pushpalal, Masaki Hasegawa
-
Patent number: 5626665Abstract: Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at least about 1000 psi; and (3) low alkali functionality. By increasing the amount of calcined clay, the resulting cementitious system will sequentially gain the following properties: (1) alkali non-reactiveness; (2) alkali resistance; and (3) low chloride permeability. Novel methods of preparing the novel cementitious systems of this invention are also disclosed. The novel methods not only reduce production costs by decreasing fuel and raw material consumption, but they also allow the cement producer to proactively address significant environmental concerns related to the manufacturing process.Type: GrantFiled: November 4, 1994Date of Patent: May 6, 1997Assignee: Ash Grove Cement CompanyInventors: Gregory S. Barger, Eric R. Hansen
-
Patent number: 5482543Abstract: A new and original water paint is disclosed, in liquid form, such as a milky emulsion, containing a low amount of water and comprising minerals, acetic acid solution, and other components. The new water paint has bactericidal, fireproof, transpiring, ecological, isolating and desalting properties and is suitable to coat manufactured building articles, wood, metals and plastic.Type: GrantFiled: July 14, 1994Date of Patent: January 9, 1996Assignee: Laboratori Ecobios S.r.l.Inventors: Donato L. Bleve, Francesco Defrancesco, Fernando Ciardo
-
Patent number: 5482551Abstract: An extrudable composition is provided which is made up primarily of gypsum, a binder/rheology aid and water with a crumbly, semi-dry consistency. The extrudable composition described can be extruded through a die to provide a building product. Density can be minimized and strength optimized by using features of the composition and of the process.Type: GrantFiled: October 6, 1994Date of Patent: January 9, 1996Assignee: Armstrong World Industries, Inc.Inventors: Debra L. Morris, Albert G. Landers
-
Patent number: 5277712Abstract: A dry mix-type, drywall panel joint compound is produced which comprises (a) a fine plaster which is applied to a joint formed between adjacent drywall panels in the plastic state to form a hardened material, (b) a material which imparts internal strength and workability to the joint compound, (c) a material for retaining water and inhibits shrinkage of the joint compound within the joint formed between adjacent drywall panels, and (d) a set time control agent. The more preferred joint compound formulation of this invention includes (a) stucco, (b) methyl cellulose, and (c) perlite. A longer set time version of the subject dry mix-type, drywall panel joint compound can also be provided which comprises, in addition to (a)-(d), (e) at least one water absorption agent, (f) at least one shrinkage and cracking inhibitor, (g) at least one adhesive strengthening agent, and (h) an alkaline material for raising the pH of material.Type: GrantFiled: August 20, 1992Date of Patent: January 11, 1994Assignee: Louisiana-Pacific CorporationInventor: John D. McInnis
-
Patent number: 5098612Abstract: An aqueous liquid or sludge waste is solidified by mixing it with a clay selected from the group consisting of sodium Montmorillonite, attapulgite, sepiolite, and mixtures thereof and a cementitious material coated with a fluid silicone polymer.Type: GrantFiled: July 9, 1990Date of Patent: March 24, 1992Inventor: Farrell D. Rowsell
-
Patent number: 4994112Abstract: Hydroxyalkylcellulose hydrophobically modified with a C12 to C16 alkyl or aralkyl group represents a preferred thickener for a paper coating composition to obtain uniform coating at high speed. The process for manufacture involves: preparing an aqueous coating composition of hydrophobically modified hydroxyethylcellulose, pigment binder and other additives; applying the composition to a paper surface; removing excess composition to produce a uniform coating; and drying to produce a paper product.Type: GrantFiled: October 30, 1989Date of Patent: February 19, 1991Assignee: Aqualon CompanyInventors: Thomas G. Majewicz, Teng-Shau Young
-
Patent number: 4988390Abstract: A shaped article of gypsum possessing heretofore unattainable high strength, a method for the production of the shaped article, and a method for the production of inclusion water indispensable to the hardening by hydration of the production of the shaped article of gypsum are disclosed.Type: GrantFiled: April 17, 1990Date of Patent: January 29, 1991Assignee: Osaka Yuki Kagaku Kogyo Kabushiki KaishaInventors: Taiji Kambayashi, Hideyuki Mekata, Hiroyuki Kataoka, Chuzo Kato
-
Patent number: 4981521Abstract: Fire retardant coatings for metal structural members are obtained by spraying onto the structural members settable plaster compositions which are air-containing pumpable aqueous slurries of plaster, clay prill aggregate, cellulose and glass fiber reinforcement and foaming agent. The specially prepared clay prill aggregate has a low aspect ratio of near unity and is an acceptable substitute for the exfoliated vermiculite aggregate of prior coating compositions.Type: GrantFiled: May 9, 1988Date of Patent: January 1, 1991Assignee: W. R. Grace & Co.-Conn.Inventors: Robert J. Bettacchi, Mary Driscoll, Dennis M. Hilton