Patents by Inventor Urs Burckhardt

Urs Burckhardt 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).

  • CHEMICAL BLOWING AGENT AND THERMALLY EXPANDABLE THERMOPLASTIC COMPOSITION
    Publication number: 20170342230
    Abstract: A chemical blowing agent is described that includes at least one tertiary alkyl carbamate. The chemical blowing agent can be activated thermally and is suitable for foaming thermoplastic materials and can, for example, be incorporated into thermally expandable baffle and/or reinforcement elements, which can be used in automotive manufacturing and building insulation.
    Type: Application
    Filed: December 18, 2015
    Publication date: November 30, 2017
    Inventors: Nicolae BORDEANU, Rui XU-RABL, Urs BURCKHARDT
  • Two-component compositions based on silane-functional polymers
    Patent number: 9822279
    Abstract: The invention relates to a two-component composition, including a component A, which includes at least one silane-functional polymer and at least one hardener or accelerator for epoxy resins, and a component B, which includes at least one aqueous emulsion of at least one epoxy resin. Two-component compositions according to the invention are suitable as adhesives, sealants or coatings.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: November 21, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Fabien Choffat, Daniele Rutz, Steffen Kelch, Ulrich Wolf
  • POLYMER CONTAINING SILANE GROUPS
    Publication number: 20170320997
    Abstract: A polymer containing silane groups, a method for synthesizing same, and curable compositions including the polymer. The polymer containing silane groups has a very long shelf life and cures quickly with moisture. The polymer is suitable as an elastic adhesive or sealant or coating that can be applied at room temperature and has good heat resistance, or as a hot melt adhesive.
    Type: Application
    Filed: November 23, 2015
    Publication date: November 9, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Andreas KRAMER, Urs BURCKHARDT
  • Dioxomolybdenum (VI) complex compounds as catalysts for polyurethane compositions
    Patent number: 9796806
    Abstract: The invention relates to dioxomolybdenum (VI) complex compounds of the formula MoO2(L)x(Y)2-x, where the ligand L has the formula (I). Such complex compounds are suitable in particular as catalysts for one- and two-component polyurethane compositions. The invention also relates to two-component polyurethane compositions including at least one polyisocyanate as the first component, at least one polyol as the second component, and at least one such dioxomolybdenum (VI) complex compound as the catalyst. The invention further relates to one-component polyurethane compositions comprising at least one polyurethane prepolymer with isocyanate groups, which are made from at least one polyisocyanate with at least one polyol, and comprising such a dioxomolybdenum (VI) complex compound as the catalyst. The invention additionally relates to different uses of said polyurethane compositions.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: October 24, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Rita Cannas
  • Amine for low-emission epoxy resin products
    Patent number: 9796661
    Abstract: The present invention relates to an amine of the formula (I) which is an adduct of 1,2-propylenediamine with an aryl monoglycidyl ether, to the use thereof as part of a hardener for epoxy resins, and to epoxy resin compositions obtained therewith. The amine of the formula (I) is preparable in a simple process in high purity, is of very low viscosity and is especially suitable for the curing of epoxy resins. It allows low-emission epoxy resin compositions which have good workability and which cure even under cold and damp conditions, quickly and without blushing effects, to form very hard products of high surface quality that display virtually no yellowing on exposure to light.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: October 24, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
  • Polymer containing silane groups
    Patent number: 9790315
    Abstract: The invention relates to polymers containing silane groups, to a method for their production and to their use as a component of curable compositions, in particular of moisture-curing sealants, adhesives or coatings that can be applied at ambient temperature, or of hot-melt adhesives containing silane groups. The polymers containing silane groups are obtained in particular by means of a special hydroxysilane which can be produced in particular from the reaction of lactides with aminosilanes.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: October 17, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Andreas Kramer, Urs Burckhardt, Ursula Stadelmann
  • Curing agents for low-emission epoxy resin products
    Patent number: 9790319
    Abstract: The present invention relates to curing agents for epoxy resins, containing at least one adduct of trimethylhexamethylenediamine and cresyl glycidyl ether. The curing agent has a low viscosity and cures quickly together with epoxy resins even in moist, cold conditions and without blushing to form films with a high hardness and surface quality, which scarcely undergo yellowing upon exposure to light. It is particularly suited for low-emission room temperature-curing coatings.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: October 17, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
  • TWO-COMPONENT COMPOSITION
    Publication number: 20170292050
    Abstract: A two-component composition, containing at least one silane-group-containing polymer that is liquid at room temperature, at least one epoxide liquid resin, at least one polyetheramine, and at least one aminosilane or mercaptosilane. The composition has low odor, cures quickly and without blistering at room temperature, and, when cured, forms a tough elastic material of high strength, high adhesive force, and good thermal resistance that has no tendency toward yellowing or substrate discoloration. The composition is excellently suitable as a tough elastic adhesive for structural adhesive joints in the field of construction and in industrial production.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 12, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Steffen KELCH, Ursula STADELMANN
  • STORAGE-STABLE, MOISTURE-CURING POLYURETHANE ADHESIVE WITH RAPID ADHESIVE FORMATION ON GLASS
    Publication number: 20170275509
    Abstract: A moisture-curing adhesive composition has a) at least one polyurethane polymer having isocyanate groups, b) at least a silane adhesion promoter, c) at least one amine catalyst, and d) at least one chelate complexing agent. Compositions are suitable especially as adhesive or sealant, in particular for glass panes, for example in vehicle construction or vehicle repair, wherein the use of a primer or activator can be dispensed with.
    Type: Application
    Filed: September 22, 2015
    Publication date: September 28, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Alain ZAHN, Michael SCHLUMPF, Urs BURCKHARDT
  • Polymer containing silane groups
    Patent number: 9765177
    Abstract: Methods for producing a polymer with end groups of formula (I), which is free of isocyanate groups, wherein at least one hydrosilane of formula (II) is reacted with at least one polyurethane polymer containing isocyanate groups, where R1 stands for an alkyl group having 1 to 12 C atoms, R2 stands for a hydrogen atom or for an alkyl group having 1 to 12 C atoms, which optionally comprises ether oxygen or amine nitrogen, R3 stands for a linear or a branched alkylene or cycloalkylene residue having 1 to 20 C atoms, optionally with aromatic parts, and optionally with one or more heteroatoms, R4 stands for an alkyl group having 1 to 6 C atoms, R5 stands for an alkyl group having 1 to 10 C atoms, which optionally comprises one or more ether oxygens, n stands for 2 or 3 or 4, and x stands for 0 or 1.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: September 19, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Andreas Kramer, Urs Burckhardt
  • Liquid-applied waterproofing membrane for roofs comprising a trialdimine
    Patent number: 9752054
    Abstract: The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane including a polyurethane polymer and both a trialdimine and a dialdimine as blocked amine hardeners in a specific ratio range. The membrane has a low odor, a long shelf life stability, a low viscosity at low solvent content, a sufficiently long open time to allow hand application and cures fast to a solid elastic material. The liquid-applied waterproofing membrane can be suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor weathering conditions in a broad temperature range.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: September 5, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Michael Byrne, Mark Gatrell, Alexander Coward, Urs Burckhardt
  • Hydroxysilane and polymer containing silane groups
    Patent number: 9751900
    Abstract: Special hydroxysilanes, which can be obtained by reacting ?-(3,4-epoxycyclohexyl)alkyltrialkoxysilanes with secondary amines, and adducts of the hydroxysilanes in the form of polymers containing silane groups. The hydroxysilanes can be produced having high purity in a simple process and are very stable in storage after production. The polymers containing silane groups that can be obtained by means of the hydroxysilanes have advantageous properties. The polymers enable moisture-curing compositions, which contain no isocyanate groups and which are suitable as elastic adhesives and sealants.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: September 5, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Andreas Kramer, Urs Burckhardt, Ursula Stadelmann
  • FAST-CURING COMPOSITION CONTAINING SILANE GROUPS
    Publication number: 20170240689
    Abstract: A polymer preparation consisting of silane-functional polymers, including at least one polymer having at least one terminal group of formula (I) and at least one further silane terminal group, a method for producing the polymer preparation and a composition containing it. The polymer preparation has a surprisingly low viscosity, cross-links surprisingly quickly even without the use of EHS-critical catalysts such as organotin compounds or DBU, and hardens into a non-sticky material with good strength and elasticity. It is especially well suited as an elastic adhesive or sealant or as an elastic coating. The invention further relates to a method for lowering the viscosity of a polymer having at least one terminal group of formula (I) by introducing at least one further silane terminal group.
    Type: Application
    Filed: November 23, 2015
    Publication date: August 24, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Andreas KRAMER, Urs BURCKHARDT
  • HYDROXY SILANE AS AN ADHESION PROMOTER OR CROSS-LINKING AGENT
    Publication number: 20170240780
    Abstract: A hydroxy silane of formula (I) used as an adhesion promoter or cross-linking agent for adhesives, sealants or coatings. The invention also relates to an adhesion-promoter composition containing the hydroxy silane of formula (I) and to adhesives, sealants or coatings containing the hydroxy silane of formula (I). The hydroxy silane of formula (I) has a surprisingly long shelf-life and exhibits an excellent action as an adhesion promoter and/or cross-linking agent.
    Type: Application
    Filed: November 23, 2015
    Publication date: August 24, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Andreas KRAMER, Urs BURCKHARDT
  • FAST-CURING COMPOSITION CONTAINING SILANE GROUPS
    Publication number: 20170240688
    Abstract: A composition containing two different silane-functional polymers, only one of the two polymers having terminal groups of formula (I). The composition has a surprisingly rapid skin forming time and low viscosity, crosslinks quickly even without the use of EHS-critical catalysts such as organotin compounds or DBU, and cures to a non-sticky material with good strength and elasticity. Also relates to a method for accelerating the curing of a silane-crosslinking composition by adding to it a further silane-functional polymer having terminal groups of formula (I).
    Type: Application
    Filed: November 23, 2015
    Publication date: August 24, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Andreas KRAMER, Urs BURCKHARDT
  • Metal complex compounds as catalysts for polyurethane compositions
    Patent number: 9732180
    Abstract: The invention relates to metal complex compounds of the formula Mk(L)x(Y)kz-nx, where the ligand L has the formula (I), and to metal complex compounds which include the reaction product of at least one salt or a complex of a transition metal or a main group metal element of the groups 13 to 15 and at least one 1,3-ketoamide. Such complex compounds are suitable in particular as catalysts for polyurethane compositions. The invention also relates to two-component polyurethane compositions including at least one polyisocyanate as the first component, at least one polyol as the second component, and at least one such metal complex compound as the catalyst. The invention additionally relates to different uses of the two-component polyurethane compositions.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: August 15, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Rita Cannas
  • AMINE FOR LOW-EMISSION EPOXY RESIN COMPOSITIONS
    Publication number: 20170226278
    Abstract: An amine of the formula (I) and a process for its preparation by reductive alkylation of 1,2-propylenediamine with a di- or trifunctional carbonyl compound and hydrogen. The amine of the formula (I) is low in viscosity and in odour, high in reactivity towards epoxides and outstanding in its compatibility with other amines and with epoxy resins. The amine of the formula (I) allows access to low-emission epoxy resin compositions which have good processing qualities, cure rapidly even at low temperatures and form high-quality, high-hardness plastics having an attractive surface.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 10, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
  • AMINE FOR LOW-EMISSION EPOXY RESIN COMPOSITIONS
    Publication number: 20170218114
    Abstract: An amine of the formula (I) for use as hardener for epoxy resins, hardeners for epoxy resins containing the amine of the formula (I) and resultant epoxy resin compositions which more particularly can be used as low-emission room-temperature-curing epoxy-resin coatings with high hardness and surface quality. The amine of the formula (I) has little odour and is a very successful diluent for epoxy resin compositions. It is more particularly obtained by reductive alkylation from 1,2-propylenediamine and an aldehyde or ketone.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 3, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
  • Polymer containing silane groups
    Patent number: 9714316
    Abstract: The invention relates to low-viscosity polymers containing silane groups, the polymers curing rapidly under the effect of moisture to form an elastic material with good heat resistance and being in particular suitable for elastic adhesives and sealants. The polymers containing silane groups are based on special hydoxysilanes which carry a secondary OH group. They are in particular obtained by reacting epoxysilanes with secondary amines.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: July 25, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Andreas Kramer, Urs Burckhardt
  • LIQUID-APPLIED WATERPROOFING MEMBRANE FOR ROOFS
    Publication number: 20170198081
    Abstract: A one-part moisture-curing liquid-applied waterproofing membrane as disclosed includes a polyurethane polymer obtained from at least one polyether polyol and at least one diisocyanate, and an aldimine of the formula (I). The membrane has a long shelf life stability with both aromatic and aliphatic isocyanates, a low viscosity at low solvent content, a sufficiently long open time to allow hand application and cures fast to a solid elastic material of high strength and high elongation. The released aldehyd is non-toxic and low flammable and evaporates quickly out of the membrane causing only minimal odour emission. The membrane has high crack-bridging qualities in a broad temperature range and is easily overcoatable without interlayer adhesion problems, which makes it particularly suitable for roofing applications.
    Type: Application
    Filed: July 8, 2015
    Publication date: July 13, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Michael BYRNE, Alexander COWARD, Mark GATRELL