Patents Assigned to Construction Research & Technology GmbH
  • Method For Manufacturing A Cementitious Composition
    Publication number: 20140107238
    Abstract: A method of expanding expandable polymeric microspheres including contacting an aqueous slurry including unexpanded, expandable polymeric microspheres with steam in-situ during manufacture of a cementitious composition or article, wherein the aqueous slurry optionally further includes an admixture therefor. A method of manufacturing a cementitious composition or article includes: (i) contacting an aqueous slurry of unexpanded, expandable polymeric microspheres with steam proximate to and/or during said manufacturing of the cementitious composition to create expanded polymeric microspheres; (ii) pre-wetting the expanded polymeric microspheres; and (iii) mixing the pre-wetted, expanded polymeric microspheres with cement and water to form the cementitious composition, wherein the aqueous slurry optionally further comprises an admixture therefor.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 17, 2014
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Frank Shaode ONG, Stefan MÜSSIG, Darren GAMBATESA, James C. SMITH, Raymond FETE, Rick PAPONETTI, Mark A. BURY
  • Polyurethane systems having non-sag and paintability
    Patent number: 8697188
    Abstract: A two part construction sealant or adhesive is provided with the properties of non-sag, low modulus, high elongation, and good paint adhesion. The sealant or adhesive is prepared using at least one of a secondary amine or an acrylate monomer, and a diol, triol and/or tetrol having a nominal weight average molecular weight of between 1,000 and 6,000 in the base component of the formulation, and aromatic diisocyanate monomer or polyisocyanate and an isocyanate terminated prepolymer of aromatic diisocyanate or polyisocyanate and polyol in the activator component, the components of Part A to Part B mixed at a weight ratio of 5:1 to 1.8:1.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: April 15, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Chia L. Wang, John M. Davis, Bryan Lienke
  • Method For Preparing Admixture Blends For Construction Material On Site And A Micro-Plant For Implementing The Method
    Publication number: 20140060387
    Abstract: The present invention discloses a method for preparing admixture blends for construction material on site, which comprises the steps of: a) selecting at least one kind of raw material for formulating out an admixture blend and providing a water supply on site; b) controlling the usage amount of said at least one kind of raw material and water on site according to construction material performance requirement; c) mixing the predetermined amount of raw materials and water on site; and d) directly supplying the obtained admixture blend to a manufacturing apparatus for construction material on a construction material manufacturing site, wherein the whole process of preparation is completed with the online control from a computer. The present invention also discloses a mobile micro-plant for implementing the method.
    Type: Application
    Filed: December 6, 2010
    Publication date: March 6, 2014
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Sven Asmus, Masayori Fujioka, Jan Kluegge
  • Powdered Accelerator
    Publication number: 20140066546
    Abstract: The present invention relates to a solid composition containing calcium silicate hydrate and at least one water-swellable polymer which can form a hydrogel, and also to a process for preparing the composition, to the use thereof as a setting accelerator, and as a grinding aid in cement production. It also relates to building material mixtures which comprise the compositions.
    Type: Application
    Filed: November 23, 2011
    Publication date: March 6, 2014
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Jutta Karin Langlotz, Stefan Friedrich, Christoph Hesse
  • Cement additive
    Patent number: 8657953
    Abstract: A cementitious material manufactured by a process including adding, after pyroprocessing, at least one desugared molasses to at least one cementitious and/or pozzolanic material during manufacture of the at least one cementitious and/or pozzolanic material. A method of manufacturing a cementitious material including adding, after pyroprocessing, at least one desugared molasses to at least one cementitious and/or pozzolanic material during manufacture of the at least one cementitious and/or pozzolanic material.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: February 25, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Stephen A. Farrington, Madalina A. Stefan
  • Alkali-activated aluminosilicate binder containing glass beads
    Patent number: 8657954
    Abstract: The invention relates to a mixture containing an alkali-activated aluminosilicate binder, said mixture, after hardening, containing at least 25% by weight of glass beads, based on the total mass. The hardened product has a surface which has very little tendency to soil and is easy to clean. A process for the preparation of the mixture according to the invention and the use thereof as joint filler are disclosed.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: February 25, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Florian Ellenrieder, Michael McIlhatton, Adolf Hagner
  • Plasticizer-containing hardening accelerator composition
    Patent number: 8653186
    Abstract: The invention concerns a process for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound and a process for the preparation of a hardening accelerator composition by reaction of a calcium compound with a silicon dioxide containing component under alkaline conditions, in both cases the reaction of the water-soluble calcium compound with the water-soluble silicate compound being carried out in the presence of an aqueous solution which contains a water-soluble comb polymer suitable as a plasticizer for hydraulic binders. The invention concerns also a composition of calcium silicate hydrate and comb polymer, its use as hardening accelerator and for the reduction of the permeability of hardened compositions.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: February 18, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Luc Nicoleau, Gerhard Albrecht, Klaus Lorenz, Eva Jetzlsperger, Daniel Fridrich, Thomas Wohlhaupter, Reinhard Dorfner, Hubert Leitner, Mario Vierle, Dirk Schmitt, Michael Braeu, Christoph Hesse, Sabrina Montero Pancera, Siegfried Zuern, Michael Kutschera
  • Polymerization mixture that can be produced without water
    Patent number: 8653162
    Abstract: The invention relates to a process for the preparation of a polymerization mixture suitable as a dispersant and comprising a copolymer. In the process, a vinyloxyalkylpolyether derivative is reacted with an acid monomer derivative with formation of the copolymer in the presence of a free radical polymerization initiator by free radical polymerization, the free radical polymerization taking place in a medium which contains less than 25% by weight of water and in totality more than 60% by weight of copolymer, vinyloxyalkylpolyether derivative and acid monomer derivative.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: February 18, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Gerhard Albrecht, Herbert Hommer, Thomas Wohlhaupter
  • Curable Composition
    Publication number: 20140045969
    Abstract: The invention relates to a composition comprising (A) at least 5% by weight of en organic prepolymer P having at least two water-crossilnkable organosilicon end groups, (B) 0.01% to 3.0% by weight of boric acid and/or bone ester, and (C) 0.01% to 3.0% by weight of an amine component. Additionally disclosed is a method for the curing of these compositions and also the use of boric acid and/or boric esters and an amine component a condensation catalyst.
    Type: Application
    Filed: November 25, 2011
    Publication date: February 13, 2014
    Applicant: Construction Research & Technology GmbH
    Inventors: Simone Klapdohr, Jochen Mezger, Burkhard Walther, Helmut Mack
  • Continuously operated method for producing copolymers
    Patent number: 8648158
    Abstract: The invention relates to a process for the preparation of copolymer in a continuous mode of operation in a polymerization apparatus, comprising a polymerization reactor having feed lines and an outflow, free radical polymerization initiator, an acid monomer and polyether macromonomer being passed as monomeric starting materials into the polymerization reactor through the feed lines, initiator, monomeric starting materials and copolymer-containing reaction composition thermostated at ?20 to +120° C.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: February 11, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Christian Schwede, Mario Vierle, Timo Mangel, Gerhard Albrecht, Volker Herzog, Klaus Arlt
  • PROCESS FOR PRODUCING POLYCONDENSATION PRODUCT
    Publication number: 20130331539
    Abstract: The present invention relates to a process for producing a polycondensation product by polycondensing monomers including (A) an aromatic or heteroaromatic compound containing a polyether chain, (B) optionally an aromatic or heteroaromatic compound which is different from monomer (A), and (C) an aldehyde, in the presence of a protonation catalyst, wherein the aldehyde is provided by a fast-releasing aldehyde source and a slow-releasing aldehyde source.
    Type: Application
    Filed: January 26, 2011
    Publication date: December 12, 2013
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Liyi Chen, Jan Kluegge
  • Use Of Compounds Containing Aluminium Oxide And Silicon Oxide For Producing A Hydrophilic Building Product
    Publication number: 20130319294
    Abstract: The use of a binder system comprising compounds containing aluminium oxide and silicon oxide for producing a hydrophilic building product, characterized in that the sum of the oxides calculated as Al2O3 and SiO2 in the binder system is ?40% by weight, based on the water-free binder system, and the contact angle of an oil drop placed on the surface of the cured building product is ?90°, where the contact angle determination is carried out under water, is proposed. The said hydrophilicity makes the building product easy to clean, with simple rinsing with water often being sufficient.
    Type: Application
    Filed: August 11, 2011
    Publication date: December 5, 2013
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GmbH
    Inventors: Uwe Gehrig, Florian Ellenrieder, Michael Melchart, Joachim Riedmiller, Steffen Wache, Mathias Degenkolb, Michael Kutschera, Katja Voland
  • Method for removing water from a mixture
    Patent number: 8584374
    Abstract: The invention relates to a method for removing water from a mixture containing at least one compound having at least one group reactive towards isocyanate and containing water, the mixture being applied to the surface of a rotating body A, the mixture flowing over the surface of the rotating body A to an outer region of the surface of the rotating body A and water evaporating from the mixture. In particular, this method is suitable for removing water from alcohols and amines.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: November 19, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Simone Klapdohr, Burkhard Walther, Helmut Mack, Zhizhong Cai, Laurent Marc, Jochen Mezger, Tobias Austermann, Silke Flakus
  • Sealant and Adhesive Using Green Prepolymer
    Publication number: 20130303690
    Abstract: A polyurethane prepolymer comprising the reaction product of a reactant formulation comprising a polyol entirely derived from a natural oil; a natural oil-petroleum blend polyol; an isocyanate, at least one catalyst, drying agent, and plasticizer, wherein the prepolymer has a bio-based content of from about 15% to about 75% by weight. The prepolymer may be used in adhesive, or sealant compositions.
    Type: Application
    Filed: July 18, 2011
    Publication date: November 14, 2013
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Jyothi Thazhakuzhy Varkey, Jayesh Neginbhai-Patel, Robert Louis Ferenz, Patrick Knoll
  • Process For Preparing A Thixotroping Agent And Use Thereof
    Publication number: 20130303804
    Abstract: The invention provides a process for preparing a thixotropic agent based on a urea derivative, in which the components ?) comprising at least one amine and ?) comprising at least one isocyanate, are supplied separately to a mixing means and are mixed with one another, the reaction mixture being discharged by spraying or squirting from the mixing means. Further disclosed is the use of the thixotropic agent in a fluid system. The process is especially suitable for preparing adhesives and sealants.
    Type: Application
    Filed: June 10, 2011
    Publication date: November 14, 2013
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Burkhard Walther, Helmut Mack, Tobias Austermann
  • Method for qualitatively and quantitatively identifying bulk goods
    Patent number: 8575240
    Abstract: Identification and quantification of mass-produced goods in articles, a dye-containing polymer dispersion having been added to the mass-produced goods. The polymer dispersions contain particles which are coded by a mixture of dyes, and the polymer dispersion particles are quantitatively determined.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: November 5, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Torsten Freund, Simon Nord, Marc Rudolf Jung, Hans-Peter Kaub, Tina Schröder-Grimonpont, Dirk Schmitt
  • Reduction In Modulus of Polyurethane Sealants and Adhesives
    Publication number: 20130267637
    Abstract: Low modulus, polyurethane sealant or adhesive compositions and a method of reducing the modulus of a polyurethane sealant or adhesive composition, including adding a modulus reducing additive of at least one of rosin esters, hydrogenated rosin esters, or mixtures thereof, to a sealant or adhesive composition including a polyurethane prepolymer, optionally having a bio-based content of from about 15% to about 75% by weight.
    Type: Application
    Filed: July 18, 2011
    Publication date: October 10, 2013
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Jyothi Thazhakuzhy Varkey, Patrick Knoll, Robert Louis Ferenz, Eric S. Wymer
  • Method and device for dispensing liquids
    Patent number: 8550690
    Abstract: Disclosed is a method and apparatus for dispensing a user-defined quantity of one or more liquids for use in a cementitious mixture. The method includes moving a liquid from a liquid supply to a manifold; moving the liquid from the manifold to a flow meter; measuring the liquid while it moves through the flow meter; moving the liquid to a cementitious mixture; repeating these steps for any additional liquids; flushing any remaining liquid from the manifold with a purgative fluid; and moving purgative fluid and flushed liquid to the cementitious mixture.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: October 8, 2013
    Assignee: Construction Research & Technology GmbH
    Inventor: Kelly Hines
  • Cement accelerator
    Patent number: 8545620
    Abstract: The invention relates to an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement, c) at least one trifunctional polyalkylene glycol and d) optionally calcium sulphate. Additionally disclosed is the use of at least one polyalkylene glycol as an accelerator for an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement and d) optionally calcium sulphate.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: October 1, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Karl Frenkenberger, Stefan Köhler, Thomas Heichele, Klaus-Dieter Hötzl, Patrick Weiss, Alexander Dressen
  • Semi continuous operational method for producing copolymers
    Patent number: 8541518
    Abstract: A process for the preparation of a copolymer in a semicontinuous mode of operation in a polymerization apparatus containing a polymerization reactor connected to a metering device, in each case acid monomer being initially introduced into the metering device and polyether macromonomer and water into the polymerization reactor, acid monomer being metered from the metering device into the polymerization reactor, the metering of the acid monomer into the polymerization reactor being effected in such a way that first a polymerization pH is established in the aqueous medium and then, until the conversion of 70 mol % of the polyether macromonomer initially introduced into the polymerization reactor, acid monomer is passed into the polymerization reactor in an amount per unit time such that the pH in the aqueous medium deviates by not more than ±0.3 from the initially established polymerization pH.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: September 24, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Gerhard Albrecht, Klaus Lorenz, Christian Scholz, Petra Wagner