Patents Assigned to MBT Holding AG
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Patent number: 6391106Abstract: A cementitious mixture comprises a hydraulic cement; greater than about 10% by weight of a pozzolanic cement replacement selected from fly ash, slag, natural pozzolans, and mixtures thereof, based on the weight of said hydraulic cement and cement replacement; and a compatabilizing admixture, wherein the compatabilizing admixture comprises a compatabilizing derivatized polycarboxylate polymer dispersant capable of acting as a water reducer, in combination with an accelerator. The derivatized polycarboxylate dispersant, alone or in combination with other derivatized polycarboxylate dispersants, is a polymer comprising units derived from at least one of a substituted carboxylic acid monomer and a substituted ethylenically unsaturated monomer, at least one of an N-polyoxyalkylene maleimide and a condensation product of an unsubstituted carboxylic acid monomer and an alkoxypolyoxyalkylene primary amine substituted carboxylic acid monomer, and optionally including an unsaturated hydrocarbon.Type: GrantFiled: July 24, 2001Date of Patent: May 21, 2002Assignee: MBT Holding AGInventors: John Moreau, Runhai Lu, Jeffrey R. Bury, Thomas M. Vickers, Jr.
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Patent number: 6376581Abstract: A cement dispersant having excellent ability to prevent slump loss and high water-reducing property which comprises a polycarboxylic acid type polymer having a specific molecular weight distribution, a method for the production thereof, and a cement composition using the dispersant are provided. The cement dispersant comprises as a main component thereof a polycarboxylic acid type polymer (A), having a weight average molecular weight in the range of 10,000 to 500,000 in terms of polyethylene glycol determined by gel permeation chromatography, and having a value determined by subtracting the peak top molecular weight from the weight average molecular weight in the range of 0 to 8,000.Type: GrantFiled: November 1, 2000Date of Patent: April 23, 2002Assignee: MBT Holding AGInventors: Yoshio Tanaka, Akira Ohta, Tsuyoshi Hirata, Toru Uno, Tsutomu Yuasa, Hideyuki Tahara
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Publication number: 20020030076Abstract: A method is provided for incorporating a foaming agent into mixtures of particulates and then forming a foam within the mixture to increase the flowability of the particulates. A method is also provided for excavating solid particulates, incorporating a foaming agent into mixtures of solid particulates, and then forming a foam within the mixture to increase the flowability of the particulates. The particulates can be transported through pipelines or boreholes. Examples of particulates include, but are not limited to, mine tailings, ores, sand, coal, soils, clays, silts, aggregates, and mixtures thereof.Type: ApplicationFiled: September 25, 2001Publication date: March 14, 2002Applicant: MBT Holding AGInventors: Frank T. Gay, Daniel Constantiner, Jeffrey T. Champa, Kevin Hutchings, Daniel G. Millette
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Patent number: 6355100Abstract: An anti-corrosion agent for use with a cementitious composition which is to be reinforced, comprising one or more species selected from a group consisting of alkyldiamines represented by the general formula RHN—(CH2)n-NH2 (in which R is an alkyl having C8-22 atoms, and n is an integer of 1-5) and alkylamines represented by the general formula R—NH2 (in which R is an alkyl having C8-22 atoms). The agents give good anti-corrosion performance which does not decline with time and exposure to the elements to the same extent as is the case with conventional anti-corrosion agents.Type: GrantFiled: January 2, 2001Date of Patent: March 12, 2002Assignee: MBT Holding AGInventors: Kenkichi Hamabe, Takao Furusawa, Takeo Ozawa, Yuki Hagiwara
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Publication number: 20020005148Abstract: A cementitious mixture comprises a hydraulic cement; greater than about 10% by weight of a pozzolanic cement replacement selected from fly ash, slag, natural pozzolans, and mixtures thereof, based on the weight of said hydraulic cement and cement replacement; and a compatabilizing admixture, wherein the compatabilizing admixture comprises a compatabilizing derivatized polycarboxylate polymer dispersant capable of acting as a water reducer, in combination with an accelerator. The derivatized polycarboxylate dispersant, alone or in combination with other derivatized polycarboxylate dispersants, is a polymer comprising units derived from at least one of a substituted carboxylic acid monomer and a substituted ethylenically unsaturated monomer, at least one of an N-polyoxyalkylene maleimide and a condensation product of an unsubstituted carboxylic acid monomer and an alkoxypolyoxyalkylene primary amine substituted carboxylic acid monomer, and optionally including an unsaturated hydrocarbon.Type: ApplicationFiled: July 24, 2001Publication date: January 17, 2002Applicant: MBT Holding AGInventors: John Moreau, Runhai Lu, Jeffrey Bury, Thomas M. Vickers
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Patent number: 6310143Abstract: The present invention is directed to derivatized polycarboxylate dispersants for cementitious mixtures, including those mixtures with high percentages of pozzolan cement replacement and dry cast applications. In particular, the invention is directed to a cementitious mixture comprising cement, including cements with high percentages of pozzolan cement replacement, water, coarse aggregate, fine aggregate, and including a dispersant, wherein said dispersant is a derivatized polycarboxylate dispersant, or combination of polycarboxylate dispersants, which is a derivatized polymer comprising a backbone having moieties derived from (a) an unsaturated hydrocarbon; (b) at least one of a substituted carboxylic acid monomer, a substituted ethylenically unsaturated monomer, and maleic anhydride; and (c) optionally including an N-polyoxyalkylene succinimide; and wherein derivative moieties are pendant to the backbone monomer by at least one ester linkage and at least one amide linkage.Type: GrantFiled: December 16, 1998Date of Patent: October 30, 2001Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Rainer Packe-Wirth, Jeffrey R. Bury, Jesse Osborne, Runhai Lu, John Moreau, Lynn E. Brower, Samy M. Shendy, John Pickett
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Patent number: 6297295Abstract: A method is provided for incorporating a foaming agent into mixtures of particulates and then forming a foam within the mixture to increase the flowability of the particulates. A method is also provided for excavating solid particulates, incorporating a foaming agent into mixtures of solid particulates, and then forming a foam within the mixture to increase the flowability of the particulates. The particulates can be transported through pipelines or boreholes. Examples of particulates include, but are not limited to, mine tailings, ores, sand, coal, soils, clays, silts, aggregates, and mixtures thereof.Type: GrantFiled: February 18, 2000Date of Patent: October 2, 2001Assignee: MBT Holding AGInventors: Frank T. Gay, Daniel Constantiner, Jeffrey T. Champa, Kevin Hutchings, Daniel G. Millette
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Patent number: 6290770Abstract: A cementitious mixture comprises a hydraulic cement; greater than about 10% by weight of a pozzolanic cement replacement selected from fly ash, slag, natural pozzolans, and mixtures thereof, based on the weight of said hydraulic cement and cement replacement; and a compatabilizing admixture, wherein the compatabilizing admixture comprises a compatabilizing derivatized polycarboxylate polymer dispersant capable of acting as a water reducer, in combination with an accelerator. The derivatized polycarboxylate dispersant, alone or in combination with other derivatized polycarboxylate dispersants, is a polymer comprising units derived from at least one of a substituted carboxylic acid monomer and a substituted ethylenically unsaturated monomer, at least one of an N-polyoxyalkylene maleimide and a condensation product of an unsubstituted carboxylic acid monomer and an alkoxypolyoxyalkylene primary amine substituted carboxylic acid monomer, and optionally including an unsaturated hydrocarbon.Type: GrantFiled: August 11, 1999Date of Patent: September 18, 2001Assignee: MBT Holding AGInventors: John Moreau, Runhai Lu, Jeffrey R. Bury, Thomas M. Vickers, Jr.
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Patent number: 6284867Abstract: A substantially non-crosslinked polymer cementitious composition dispersant for the improvement of the fluidity of cementitious compositions comprising hydrophilic side chain substituted polyimide or polyamide backbone units, having at least some proportion of grafted oligomeric or polymeric hydrophilic side chains linking at least one of amides, esters, and thioesters, wherein the polymer cementitious composition is water soluble, and wherein crosslinking is such that in a statistical sampling there is greater than zero to less than 0.1 mole % of backbone units involved in crosslinking.Type: GrantFiled: June 12, 2000Date of Patent: September 4, 2001Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Runhai Lu, Lynn E. Brower, Samy M. Shendy, Rainer Packe-Wirth, Hong Gao
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Patent number: 6270567Abstract: A material for improving the surface appearance of cementitious mouldings comprises a polyalkylene oxide compound which is selected from polypropylene oxide adducts of either polyethylene glycol or polyethylene oxide-ethylene diamine adduct, polypropylene oxide chains being attached to all terminal groups. The material may be added to a cementitious composition as an admixture or applied to the surface of a moulding which has not yet hardened.Type: GrantFiled: December 14, 1998Date of Patent: August 7, 2001Assignee: MBT Holding AGInventors: Shigemi Matsuo, Yasumasa Udagawa, Minoru Yaguchi
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Patent number: 6267814Abstract: The present invention is directed to cementitious dry cast mixtures for forming cementitious articles, particularly a cementitious dry cast mixture containing a dispersant, wherein said dispersant is a derivatized polycarboxylate dispersant which is a polymer comprising units derived from at least a substituted carboxylic acid monomer or substituted ethylenically unsaturated monomer, and optionally including at least one of an unsaturated hydrocarbon, an N-polyoxyalkylene maleimide, and a condensation product of an unsubstituted carboxylic acid monomer and an alkoxypolyoxyalkylene primary amine substituted carboxylic acid monomer.Type: GrantFiled: August 6, 1999Date of Patent: July 31, 2001Assignee: MBT Holding AGInventors: Jeffrey R. Bury, Jesse Osborne, Thomas M. Vickers, Jr., Ken Sroka, Runhai Lu, Lan Huang, Heath Brown
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Patent number: 6248166Abstract: A method of treating a shell sand by heating it to 300° C. maximum for a time sufficient to remove substantially all of the water and organic content while maintaining substantially all of the inherent porosity of the shell sand. Generally, the time required varies between 10 minutes maximum at 300° C. to about 1 hour at 95° C. The resulting material is useful in cementitious compositions, particularly mortars, these being characterised by a high flexibility and an exceptionally high degree of resistance to fire or heat.Type: GrantFiled: November 10, 1999Date of Patent: June 19, 2001Assignee: MBT Holding AGInventor: Ronny Solsvik
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Patent number: 6193439Abstract: A construction for a partially-anchoring substrate, particularly a tunnel, comprises a sealing front layer applied to the substrate or an initial concrete layer applied thereto, and a non-deformable second layer applied to the first layer, the surface of the first layer (and, if present, the initial concrete layer) being profiled so that the various layers are locked together and behave as a single layer. The result is better performance with essential less material and work.Type: GrantFiled: February 22, 1999Date of Patent: February 27, 2001Assignee: MBT Holding AGInventor: Roland F. Wolfseher
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Patent number: 6187841Abstract: A cement dispersant having excellent ability to prevent slump loss and high water-reducing property which comprises a polycarboxylic acid type polymer having a specific molecular weight distribution, a method for the production thereof, and a cement composition using the dispersant are provided. The cement dispersant comprises as a main component thereof a polycarboxylic acid type polymer (A), having a weight average molecular weight in the range of 10,000 to 500,000 in terms of polyethylene glycol determined by gel permeation chromatography, and having a value determined by subtracting the peak top molecular weight from the weight average molecular weight in the range of 0 to 8,000.Type: GrantFiled: July 12, 1996Date of Patent: February 13, 2001Assignee: MBT Holding AGInventors: Yoshio Tanaka, Akira Ohta, Tsuyoshi Hirata, Toru Uno, Tsutomu Yuasa, Hideyuki Tahara
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Patent number: 6166119Abstract: A cement pumpability-enhancing additive which confers good pumpability on cementitious compositions such as concrete consists essentially of(a) polyethylene glycol;(b) diethylene glycol monobutyl ether and/or a derivative thereof;(c) polysaccharide; and(d) a thickening polymer selected from the group consisting of polyacrylic acid derivatives, polyacrylic amide derivatives, cellulose ethers, polyphenyl ethers and polyalkylene glycol fatty acid esters;the weight solids proportions of (a), (b), (c), and (d) in the additive being respectively 5-55%, 10-80%, 1-20% and 1-20%. The additive is preferably used with a cement dispersing agent.Type: GrantFiled: April 14, 1999Date of Patent: December 26, 2000Assignee: MBT Holding AGInventors: Shigemi Matsuo, Hidenori Nagamine, Akira Ota
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Patent number: 6136950Abstract: The invention is directed to a polymer dispersant comprising a substituted polyimide or polyamide backbone, having at least some proportion of oligomeric or polymeric grafted side chains including one of amides, esters, and thioesters, having the general formula: wherein X is at least one of hydrogen, an alkali earth metal ion, an alkaline earth metal ion, ammonium ion, and amine; R is at least one of C.sub.1 to C.sub.6 alkyl(ene) ether and mixtures thereof and C.sub.1 to C.sub.6 alkyl(ene) imine and mixtures thereof; Q is at least one of oxygen, nitrogen, and sulfur; p is a number from 1 to about 300 resulting in at least one of a linear and branched side chain; R.sub.1 is at least one of hydrogen, C.sub.1 to C.sub.Type: GrantFiled: September 23, 1997Date of Patent: October 24, 2000Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Runhai Lu, Lynn E. Brower, Samy M. Shendy, Rainer Packe-Wirth, Hong Gao
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Patent number: 6136088Abstract: A method for making a cementitious material comprises forming a mixture of water and active ingredients consisting essentially of i) a compound capable of providing, in aqueous solution, magnesium ions, ii) a potassium phosphate compound and iii) optionally an additional phosphate source; wherein forming said mixture is substantially in the absence of ammonia or an ammonium ion containing compound. A method for repairing a flaw in a cementitious structure comprises applying to the flaw the cementitious binder thus prepared.Type: GrantFiled: October 9, 1997Date of Patent: October 24, 2000Assignee: MBT Holding AGInventor: Stephen A. Farrington
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Patent number: 6133347Abstract: A cementitious formulation comprising a cement and an oligomeric dispersant is provided. The dispersant is a reaction product of two or three moieties. The first moiety (A) is a nonpolymeric, functional moiety that adsorbs onto a particle, and wherein one or more A moieties together contain at least two residues to provide attachment of the dispersant onto a particle to be dispersed. The second required moiety (C) is a linear or branched water soluble, nonionic polymer that provides the dispersing capability. A third moiety (B), if present, is a nonpolymeric moiety disposed between the first and second moiety, to connect the first and second moieties. A method is provided for dispersing a cementitious formulation comprising a cement in water, including providing in said cementitious formulation the above oligomeric dispersant.Type: GrantFiled: July 9, 1999Date of Patent: October 17, 2000Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Rainer Packe-Wirth, Michael Porsch, Samy M. Shendy, Lynn E. Brower, John Pickett, Runhai Lu, Frank Danko
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Patent number: 6131353Abstract: A composite drainage mat for preventing water and moisture from remaining trapped within walls and roofs of buildings which includes a weather barrier fixedly attached to a three-dimensional matrix filamentatious mat of a thermoplastic polyamide resin such as Nylon 6. The mat contains a great number of voids for permitting gas and liquid such as water to flow therethrough. The mat possesses a crush-resistance which allows the mat to withstand the compressive force of other building materials without inhibiting the ability of the mat to allow liquids and gases to flow therethrough.Type: GrantFiled: May 24, 1999Date of Patent: October 17, 2000Assignee: MBT Holding AGInventor: William F. Egan
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Patent number: 6076997Abstract: A deep mix soil stabilization system comprises a hydraulic cement grout, and a soil dispersant comprising at least one of i) an acrylic acid polymer or copolymer, or a salt thereof, ii) an acrylic acid/sulfonic acid copolymer, or a salt thereof, iii) an acrylic acid/phosphonic acid copolymer or a salt thereof, and iv) a blend of an acrylic acid polymer with at least one of a sulfonic acid polymer and a phosphonic acid polymer, or a salt thereof.Type: GrantFiled: October 30, 1998Date of Patent: June 20, 2000Assignee: MBT Holding AGInventors: Richard C. First, Samy M. Shendy, Stephen A. Farrington