Patents by Inventor Burkhard Walther

Burkhard Walther has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230018655
    Abstract: The present invention relates to a 2K coating system consisting of two components (A) and (B) being separate from each other, wherein (A) comprises at least one constituent (a1) containing at least one aromatic moiety and bearing on average at least two primary and/or secondary amino groups, wherein (B) comprises at least one constituent (b1) containing at least one aromatic moiety and bearing on average at least two isocyanate groups, wherein each of (A) and (B) has a solid content of at least 95 wt.-%, based on the total weight of the respective component, the amount of any fillers present in component (A) does not exceed 45 wt.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 19, 2023
    Inventors: Christian BRUCHERTSEIFER, Burkhard WALTHER
  • Publication number: 20220204807
    Abstract: The present invention relates to a two-component composition suitable for providing a coating preparation from which a cured layer can be obtained in order to protect the surface of materials against the detrimental impact of weathering and/or corrosion.
    Type: Application
    Filed: May 5, 2020
    Publication date: June 30, 2022
    Inventors: Christian BRUCHERTSEIFER, Klaus BUCK, Szilard CSIHONY, Burkhard WALTHER, Roland NOWICKI
  • Patent number: 11365289
    Abstract: A process prepares a prepolymer containing a urethane group and a curable silicon-functional group, or a prepolymer of formula (IV), The prepolymer may be cured to a cross-linked polymer by ambient moisture and is therefore suitable for use as a component in a one-component sealant or adhesive composition.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: June 21, 2022
    Assignee: BASF SE
    Inventors: Indre Thiel, Thomas Maximilian Wurm, Achim Kaffee, Burkhard Walther, Bernd Bruchmann, Peter Rudolf, Jens Langhanki
  • Publication number: 20220041907
    Abstract: A process prepares a prepolymer containing a urethane group and a curable silicon-functional group, or a prepolymer of formula (IV), The prepolymer may be cured to a cross-linked polymer by ambient moisture and is therefore suitable for use as a component in a one-component sealant or adhesive composition.
    Type: Application
    Filed: February 10, 2020
    Publication date: February 10, 2022
    Applicant: BASF SE
    Inventors: Indre Thiel, Thomas Wurm, Achim Kaffee, Burkhard Walther, Bernd Bruchmann, Peter Rudolf, Jens Langhanki
  • Patent number: 11130834
    Abstract: Polyamide foams which do not propagate fire are obtained by mixing (i) a liquid isocyanate component which comprises at least one polyisocyanate and in which the molar ratio of aromatic isocyanate groups to the sum of aromatic and aliphatic isocyanate groups is at least 60 mol %, with (ii) at least one liquid isocyanatereactive component which comprises a reactive diluent, and the reactive diluent 10 comprises (a) a chain-extending and/or crosslinking reactive diluent selected from among aliphatic branched C24-66-polycarboxylic acids, alicyclic C24-66-polycarboxylic acids and partial esters of polycarboxylic acids having at least two unesterified carboxyl groups and/or (b) a chain-terminating reactive diluent selected from among aliphatic branched C24-66-monocarboxylic acids, alicyclic C24-66-monocarboxylic acids and partial esters of polycarboxylic acids having one unesterified carboxyl group, wherein the liquid isocyanate-reactive component comprises an aromatic C8-18-polycarboxylic acid and/or an anhydride
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: September 28, 2021
    Inventors: Burkhard Walther, Bernhard Feichtenschlager, Christoph Herrmann
  • Publication number: 20210062035
    Abstract: The present invention relates to a two-component coating composition comprising one first saturated polyhydroxy component, optionally one second saturated polyhydroxy component, wherein the second polyhydroxy compound is different from the first polyhydroxy compound, at least one metal component, water and at least one polyisocyanate. The resulting composition offers excellent scratch resistance, better mechanical properties and good applicability.
    Type: Application
    Filed: January 7, 2019
    Publication date: March 4, 2021
    Inventors: Burkhard WALTHER, Heimo WOELFLE, Li Yi CHEN, Thierry BUBEL
  • Publication number: 20200165373
    Abstract: The present invention suggests a curable organic polymer comprising at least one acylurea unit represented by structural formula (I): Moreover, the present invention suggests a process for the preparation of said polymer and the use of said curable organic polymer for the preparation of a cured composition and for the preparation of hydroxyurethanes.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 28, 2020
    Inventors: Sophie PUTZIEN, Burkhard WALTHER, Heimo WOELFLE
  • Patent number: 10590227
    Abstract: The present invention suggests a curable organic polymer comprising at least one acylurea unit represented by structural formula (I): Moreover, the present invention suggests a process for the preparation of said polymer and the use of said curable organic polymer for the preparation of a cured composition and for the preparation of hydroxyurethanes.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: March 17, 2020
    Assignee: Construction Research & Technology GmbH
    Inventors: Sophie Putzien, Burkhard Walther, Heimo Woelfle
  • Publication number: 20200071535
    Abstract: The application relates to a moisture-variable protective layer having an sd value at a relative air humidity of 10% and a temperature of 12 to 35° C. at least a factor of 5.0 higher than the sd value at a relative air humidity of 90% and a temperature of 12 to 35° C., where the moisture-variable protective layer has been applied in liquid form by means of a coating composition, to a process for production thereof, to an insulation material and an insulation system comprising the moisture-variable protective layer, and to the use of a moisture-variable protective layer according to the invention in an insulation system which is free of support constructions and other heat bridges that penetrate the insulation layer, such as solid dowels or anchors, or as a coating on an insulation render.
    Type: Application
    Filed: May 4, 2018
    Publication date: March 5, 2020
    Applicant: BASF SE
    Inventors: Eva GUENTHER, Georg DAXENBERGER, Bernhard FEICHTENSCHLAGER, Ekkehard JAHNS, Gerhard ALBRECHT, Burkhard WALTHER, Nikolaus NESTLE, Anoop GUPTA
  • Publication number: 20190211137
    Abstract: Polyamide foams which inhibit the spread of fires for filling cavities in mining Polyamide foams which do not propagate fire are obtained by mixing (i) a liquid isocyanate component which comprises at least one polyisocyanate and in which the molar ratio of aromatic isocyanate groups to the sum of aromatic and aliphatic isocyanate groups is at least 60 mol %, with (ii) at least one liquid isocyanate-reactive component which comprises a reactive diluent, and the reactive diluent comprises (a) a chain-extending and/or crosslinking reactive diluent selected from among aliphatic branched C24-66-polycarboxylic acids, alicyclic C24-66-polycarboxylic acids and partial esters of polycarboxylic acids having at least two unesterified carboxyl groups and/or (b) a chain-terminating reactive diluent selected from among aliphatic branched C24-66-monocarboxylic acids, alicyclic C24-66-monocarboxylic acids and partial esters of polycarboxylic acids having one unesterified carboxyl group, and (iii) optionally a solid isocyana
    Type: Application
    Filed: September 4, 2017
    Publication date: July 11, 2019
    Inventors: Burkhard WALTHER, Bernhard FEICHTENSCHLAGER, Christoph HERRMANN
  • Patent number: 10059685
    Abstract: 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates of formula (I): wherein one of R1 and R2 can be hydrogen. R1 and R2, if not hydrogen, and in each case independently of one another, are selected from straight-chain, branched or cyclic C1-22-alkyl groups, preferably C1-12-alkyl groups, C6-12-aryl groups, C6-18-aralkyl groups and C6-18-alkaryl groups, wherein R1 and/or R2, in each case independently of one another, may comprise at least one additional functional group, selected from hydroxyl groups, ether groups, ester groups, epoxy groups, and double bonds, and wherein R2 may be substituted with up to 10, preferably with 1 to 5, and in particular with 1 or 2 further 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylic groups. The 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates can be prepared by reacting 2-oxo-1,3-dioxolane-4-carboxylic acid with epoxides and can be used for the preparation of hydroxyurethanes through reaction with amines, such as amine hardeners.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: August 28, 2018
    Assignee: Construction Research & Technology, GmbH
    Inventors: Sophie Putzien, Burkhard Walther, Maximilian Kohler
  • Publication number: 20180127894
    Abstract: Fibers of diverse materials find widespread use in inorganic binder compositions to improve the properties of the final cured composite materials. When using high amounts of fiber in inorganic binder slurries, problems arise due to the loss of workability because of unevenly distributed fiber content. The novel fibers according to the invention allow the use of large amounts of fiber without loss of workability and are particularly useful to control the rheology of the composite slurry mixtures.
    Type: Application
    Filed: April 19, 2016
    Publication date: May 10, 2018
    Inventors: Burkhard WALTHER, Bernhard FEICHTENSCHLAGER
  • Patent number: 9840635
    Abstract: The invention relates to coatings which can be obtained by adding mercapto groups to acrylates and/or by a radiation curing process, said coatings having good properties, to methods for producing same, and to the use thereof.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: December 12, 2017
    Assignee: Construction Research & Technology, GmbH
    Inventors: Burkhard Walther, Bernhard Feichtenschlager, Heimo Woelfle, Bernd Bruchmann, Alfons Smeets
  • Publication number: 20170253687
    Abstract: The present invention suggests a curable organic polymer comprising at least one acylurea unit represented by structural formula (I): Moreover, the present invention suggests a process for the preparation of said polymer and the use of said curable organic polymer for the preparation of a cured composition and for the preparation of hydroxyurethanes.
    Type: Application
    Filed: July 23, 2015
    Publication date: September 7, 2017
    Inventors: Sophie PUTZIEN, Burkhard WALTHER, Heimo WOELFLE
  • Patent number: 9643948
    Abstract: The present invention suggests 2-oxo-1,3-dioxolane-4-acyl halides of formula (I), wherein X is selected from F, Cl, Br, I and mixtures thereof, preferably Cl, processes for the preparation of said 2-oxo-1,3-dioxolane-4-acyl halides, the use of said 2-oxo-1,3-dioxolane-4-acyl halides for the preparation of 2-oxo-1,3-dioxolane-4-carboxylic esters of formula (II), the use of said 2-oxo-1,3-dioxolane-4-acyl halides for the preparation of 2-oxo-1,3-dioxolane-4-carboxamides of formula (III), and also the use of said 2-oxo-1,3-dioxolane-4-acyl halides as agents for the blocking of amines.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: May 9, 2017
    Assignee: Construction Research & Technology GmbH
    Inventors: Sophie Putzien, Maximilian Köhler, Heimo Wölfle, Burkhard Walther
  • Publication number: 20170107330
    Abstract: The present invention relates to curable compositions based on elemental sulfur and polymer components. The inventive composition cures in the presence of elemental sulfur, thus providing a novel composition with enhanced chemical and physical properties in particular useful for sealing and coating applications.
    Type: Application
    Filed: January 9, 2015
    Publication date: April 20, 2017
    Applicant: Construction Research & Technology GmbH
    Inventors: Burkhard WALTHER, Bernhard FEICHTENSCHLAGER, Heimo WOELFLE
  • Patent number: 9617238
    Abstract: The present invention suggests a 2-oxo-1,3-dioxolane-4-carboxamide of formula (I), wherein R is an n-valent radical, n is an integer from 2 to 4, preferably from 2 to 3, and x is an integer from 1 to n?1. The invention furthermore suggests a process for the preparation of the 2-oxo-1,3-dioxolane-4-carboxamide of formula (I) from 2-oxo-1,3-dioxolane-4-carboxylic acid of formula (II) with a polyisocyanate of the formula R(NCO)n, where R and n have the meanings given, the use of the 2-oxo-1,3-dioxolane-4-carboxamide of formula (I) for the preparation of a 2-oxo-1,3-dioxolane-4-carboxamide-substituted prepolymer, and the 2-oxo-1,3-dioxolane-4-carboxamide-substituted prepolymer thus obtainable.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: April 11, 2017
    Assignee: Construction Research & Technology GmbH
    Inventors: Heimo Wölfle, Burkhard Walther, Sophie Putzien
  • Patent number: 9580356
    Abstract: The present invention relates to a self-foaming geopolymer composition comprising at least one hydraulic binder; at least one binder selected from latent hydraulic binders, pozzolanic binders, and mixtures thereof; at least one alkaline activator; and aluminum dross. It moreover relates to the use of that geopolymer composition for the production of geopolymer foams and/or foamed geopolymer products.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: February 28, 2017
    Inventors: Burkhard Walther, Bernhard Feichtenschlager, Shengzhong Zhou
  • Patent number: 9574089
    Abstract: Nonaqueous coating material compositions comprising at least one polyhydroxyl and (per)fluoroalkyl group-containing poly(meth)acrylate component (A), at least one polyisocyanate group-containing compounds (B), and one or more catalysts (D). Also provided are multistage coating methods using the coating material compositions, and also the use of the coating material compositions as a clearcoat material and for coating of wind energy systems or aircraft, or parts thereof, more particularly as an anti-icing coating.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: February 21, 2017
    Assignee: BASF Coatings GmbH
    Inventors: Günter Klein, Peter Hoffmann, Andreas Feigl, Fabian Niedermair, Norbert Steidl, Burkhard Walther
  • Publication number: 20170008871
    Abstract: 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates of formula (I): wherein one of R1 and R2 can be hydrogen. R1 and R2, if not hydrogen, and in each case independently of one another, are selected from straight-chain, branched or cyclic C1-22-alkyl groups, preferably C1-12-alkyl groups, C6-12-aryl groups, C6-18-aralkyl groups and C6-18-alkaryl groups, wherein R1 and/or R2, in each case independently of one another, may comprise at least one additional functional group, selected from hydroxyl groups, ether groups, ester groups, epoxy groups, and double bonds, and wherein R2 may be substituted with up to 10, preferably with 1 to 5, and in particular with 1 or 2 further 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylic groups. The 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates can be prepared by reacting 2-oxo-1,3-dioxolane-4-carboxylic acid with epoxides and can be used for the preparation of hydroxyurethanes through reaction with amines, such as amine hardeners.
    Type: Application
    Filed: February 20, 2015
    Publication date: January 12, 2017
    Inventors: Sophie PUTZIEN, Burkhard WALTHER, Maximilian KOHLER