Patents by Inventor Steffen Kelch
Steffen Kelch 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).
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Publication number: 20180201815Abstract: A two-component polyurethane composition includes a first component, including at least one polybutadiene polyol P1 having an average molecular weight of 2,000 to 10,000 g/mol and an average OH functionality of 2.1 to 4, and a second component, including at least one polyisocyanate and optionally at least one isocyanate-terminated polyurethane prepolymer. The composition also contains at least one hydrophobic diol P2 having an average molecular weight of 500 to 5,000 g/mol, selected from polybutadiene diols, polyester diols, polycarbonate diols, polyether diols having a repeat unit having at least 4 C atoms, and/or at least one hydrophobic compound P3, which is terminated with amino groups and has an average molecular weight in the range of 200 to 2,000 g/mol. The ratio of the number of hydroxyl groups from P1 to the number of hydroxyl and primary and secondary amino groups from P2 and P3 is 2:1 to 16:1.Type: ApplicationFiled: July 26, 2016Publication date: July 19, 2018Applicant: SIKA TECHNOLOGY AGInventors: Steffen KELCH, Michael SCHLUMPF, Tina VOCI
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Patent number: 9914862Abstract: The present invention relates to a two-component polyurethane adhesive consisting of a polyol component and a polyisocyanate component, wherein the polyol component comprises a triol with a molar mass of 1,000 to 10,000 g/mol, a diol having two primary hydroxy groups and a molar mass of 60 to 150 g/mol, a poly(trimethylene oxide) diol or a poly(tetramethylene oxide) diol with a molar mass of 200 to 3,000 g/mol and an aliphatic polyamine. The adhesive is characterized by high early strength, a low temperature dependence of the mechanical properties, good adhesion and the possibility of controlled thermally induced release of adhesion.Type: GrantFiled: May 14, 2014Date of Patent: March 13, 2018Assignee: SIKA TECHNOLOGY AGInventors: Steffen Kelch, Wolfgang Roock, Florian Ittrich
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Patent number: 9896609Abstract: The present invention relates to a polyurethane composition consisting of a first and a second component, wherein the first component comprises an alkoxylated aromatic diol, a low molecular weight aliphatic or cycloaliphatic diol and a specific polybutadiene polyol in specific ratios. The cured composition is characterized by having good adhesive characteristics, a strength that is only slightly dependent upon the temperature in the temperature range of ?35 to +85° C. and high strength and elasticity. It is particularly suitable as a structural adhesive for bonding two substrates.Type: GrantFiled: May 14, 2014Date of Patent: February 20, 2018Assignee: SIKA TECHNOLOGY AGInventors: Wolfgang Roock, Steffen Kelch, Matthias Heidtmann
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Patent number: 9890308Abstract: The present invention relates to a two-component polyurethane adhesive consisting of a polyol component and a polyisocyanate component, wherein the polyol component comprises a triol with a molar mass of 1,000 to 10,000 g/mol, a diol having two primary hydroxy groups and a molar mass of 60 to 150 g/mol, a poly(trimethylene oxide) diol or a poly(tetramethylene oxide) diol with a molar mass of 200 to 3,000 g/mol and an aliphatic polyamine. The adhesive is characterized by high early strength, a low temperature dependence of the mechanical properties, good adhesion and the possibility of controlled thermally induced release of adhesion.Type: GrantFiled: May 14, 2014Date of Patent: February 13, 2018Assignee: SIKA TECHNOLOGY AGInventors: Steffen Kelch, Wolfgang Roock, Florian Ittrich
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Patent number: 9856374Abstract: The invention relates to a two-component composition consisting of a component A, which comprises at least one silane-functional polymer and at least one epoxy resin, and consisting of a component B, which comprises water and at least one amine epoxy adduct. The composition cures quickly into an elastic material with a high strength and durability and is particularly suitable as an adhesive and/or a sealant.Type: GrantFiled: February 25, 2014Date of Patent: January 2, 2018Assignee: SIKA TECHNOLOGY AGInventors: Steffen Kelch, Urs Burckhardt
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Patent number: 9834639Abstract: The present invention relates to a curing agent for moisture-curing compositions which includes at least one aqueous emulsion of at least one epoxy resin. Curing agents according to the invention are especially used for the accelerated curing of moisture-curing compositions which are based on polyurethane polymers that have isocyanate groups or of silane-functional polymers.Type: GrantFiled: August 24, 2012Date of Patent: December 5, 2017Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Steffen Kelch, Ulrich Wolf
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Patent number: 9822279Abstract: 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: GrantFiled: August 24, 2012Date of Patent: November 21, 2017Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Fabien Choffat, Daniele Rutz, Steffen Kelch, Ulrich Wolf
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Patent number: 9822289Abstract: The invention relates to a polyurethane composition comprising one first component and one second component, said first component comprising an alkoxylated aromatic diol, a low molecular aliphatic or cycloaliphatic diol, a specific polybutadiene polyol and a specific polyetherpolyol, in specific ratios. The hardened composition is characterized by having good adhesion characteristics, a resistance which is only slightly dependent on the temperature, in the temperature range of ?35 to +85° C. and also very high resistances. It is particularly suitable as a structural adhesive for bonding two substrates.Type: GrantFiled: May 14, 2014Date of Patent: November 21, 2017Assignee: SIKA TECHNOLOGY AGInventors: Wolfgang Roock, Steffen Kelch, Andrea Thomas
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Patent number: 9809732Abstract: The invention concerns a two-component polyurethane composition including a polyol component K1 and a polyisocyanate component K2, the polyol component K1 including castor oil A1 and 1,2,3-propane triol A2, and the polyisocyanate component K2 including at least one aromatic polyisocyanate B1, the ratio in weight percent of (A1/A2) being between 4 and 50 and the ratio of all NCO groups of the aromatic polyisocyanates B1 to all the OH groups totaling (A1+A2)=1.15:1-85:1, and the total of all the OH groups of (A1+A2) being >93% of the total of all the OH groups of the two-component polyurethane composition, characterized by controllable hydrolytic degradability.Type: GrantFiled: September 6, 2013Date of Patent: November 7, 2017Assignee: SIKA TECHNOLOGY AGInventor: Steffen Kelch
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Publication number: 20170292050Abstract: 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: ApplicationFiled: September 25, 2015Publication date: October 12, 2017Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Steffen KELCH, Ursula STADELMANN
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Publication number: 20170240686Abstract: The invention relates to compositions comprising at least one first and one second component; —the first component K1 comprising at least one di(aminobenzoate) ester A1 of formula (I) with an average molecular weight of 500 g/mol to 2000 g/mol, preferably 600 g/mol to 1500 g/mol and particularly preferred between 650 g/mol and 1300 g/mol, G being a divalent group derived from poly(tetramethylene oxide) diol, and —the second component K2 comprising at least one aromatic polyisocyanate B1 with an average molecular weight of 160 g/mol to 1100 g/mol, preferably 500 g/mol to 800 g/mol.Type: ApplicationFiled: October 13, 2015Publication date: August 24, 2017Applicant: SIKA TECHNOLOGY AGInventors: Steffen MAIER, Dominik HUBER, Steffen KELCH
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Patent number: 9683152Abstract: A two-component polyurethane adhesive is described. The polyurethane adhesive has high strength and extensibility, wherein the mechanical properties are only slightly dependent on the temperature. The polyurethane adhesive is suitable as a structural adhesive that is decomposed by heating in such a way that adhesive bonds can be undone in a temperature range of interest. The adhesive can include a triol, a diol, an alkoxylated aromatic diol, a polyamine, a polyisocyanate, and a polyurethane polymer having isocayanate groups in certain ratios.Type: GrantFiled: August 20, 2013Date of Patent: June 20, 2017Assignee: SIKA TECHNOLOGY AGInventors: Steffen Kelch, Wolfgang Roock, Florian Ittrich
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Patent number: 9637668Abstract: The invention relates to a two-component polyurethane adhesive having high strength and elasticity at a particularly low glass transition temperature, suitable as a structural adhesive. The adhesive according to the invention contains a triol, a diol, a polyamine, a polyisocyanate and a polyurethane polymer having isocyanate groups in certain ratios, and a Fe(III) or Ti(IV) or Zr(IV) or Hf(IV) chelate-complex-catalyst.Type: GrantFiled: September 10, 2013Date of Patent: May 2, 2017Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Steffen Kelch, Rita Cannas
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Patent number: 9587152Abstract: The invention concerns two-component polyurethane compositions of a polyol component and a polyisocyanate component, the polyol component including at least one reaction product of castor oil and ketone resins with an OH number of 110 to 200 mg KOH/g, and at least one aliphatic triol, and the polyisocyanate component including at least one aromatic polyisocyanate, the ratio in weight percent of being between 4 and 50 and the ratio of all NCO groups of the aromatic polyisocyanates to all the OH groups totaling (A1+A2)=1.15:1-85:1, the aliphatic triol being-1,2,3-propane triol and/or-1,1,1-trimethylol propane and/or polyether polyols based on 1,1,1-trimethylol propane with a molecular weight of 170-500 g/mol and an OH-number of 400-1100 mg KOH/g, and the total of all the OH groups of (A1+A2) being ?90% of the total of all the OH groups of the two-component polyurethane composition.Type: GrantFiled: September 5, 2013Date of Patent: March 7, 2017Assignee: SIKA TECHNOLOGY AGInventors: Steffen Kelch, Wolfgang Dürnay
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Publication number: 20160090515Abstract: The invention relates to a polyurethane composition comprising one first component and one second component, said first component comprising an alkoxylated aromatic diol, a low molecular aliphatic or cycloaliphatic diol, a specific polybutadiene polyol and a specific polyetherpolyol, in specific ratios. The hardened composition is characterized by having good adhesion characteristics, a resistance which is only slightly dependent on the temperature, in the temperature range of ?35 to +85° C. and also very high resistances. It is particularly suitable as a structural adhesive for bonding two substrates.Type: ApplicationFiled: May 14, 2014Publication date: March 31, 2016Applicant: SIKA TECHNOLOGY AGInventors: Wolfgang ROOCK, Steffen KELCH, Andrea THOMAS
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Publication number: 20160068724Abstract: The present invention relates to a polyurethane composition consisting of a first and a second component, wherein the first component comprises an alkoxylated aromatic diol, a low molecular weight aliphatic or cycloaliphatic diol and a specific polybutadiene polyol in specific ratios. The cured composition is characterized by having good adhesive characteristics, a strength that is only slightly dependent upon the temperature in the temperature range of ?35 to +85° C. and high strength and elasticity. It is particularly suitable as a structural adhesive for bonding two substrates.Type: ApplicationFiled: May 14, 2014Publication date: March 10, 2016Applicant: Sika Technology AGInventors: Wolfgang ROOCK, Steffen KELCH, Matthias HEIDTMANN
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Publication number: 20160053147Abstract: The present invention relates to a two-component polyurethane adhesive consisting of a polyol component and a polyisocyanate component, wherein the polyol component comprises a triol with a molar mass of 1,000 to 10,000 g/mol, a diol having two primary hydroxy groups and a molar mass of 60 to 150 g/mol, a poly(trimethylene oxide) diol or a poly(tetramethylene oxide) diol with a molar mass of 200 to 3,000 g/mol and an aliphatic polyamine. The adhesive is characterized by high early strength, a low temperature dependence of the mechanical properties, good adhesion and the possibility of controlled thermally induced release of adhesion.Type: ApplicationFiled: May 14, 2014Publication date: February 25, 2016Applicant: SIKA TECHNOLOGY AGInventors: Steffen KELCH, Wolfgang ROOCK, Florian ITTRICH
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Publication number: 20150368466Abstract: The invention relates to a two-component composition consisting of a component A, which comprises at least one silane-functional polymer and at least one epoxy resin, and consisting of a component B, which comprises water and at least one amine epoxy adduct. The composition cures quickly into an elastic material with a high strength and durability and is particularly suitable as an adhesive and/or a sealant.Type: ApplicationFiled: February 25, 2014Publication date: December 24, 2015Applicant: SIKA TECHNOLOGY AGInventors: Steffen KELCH, Urs BURCKHARDT
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Publication number: 20150259465Abstract: The invention relates to a two-component polyurethane composition containing a polyol, a polyisocyanate, a blocked amine and a bismuth(III)- or zirconium(IV)-catalyst. The composition is easy to process, cures quickly and without bubbles, and has unexpectedly high strengths when in its cured state. It is particularly suitable as an adhesive, sealant, coating or potting compound.Type: ApplicationFiled: September 6, 2013Publication date: September 17, 2015Inventors: Urs Burckhardt, Steffen Kelch, Rita Cannas
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Publication number: 20150247073Abstract: The invention concerns a two-component polyurethane composition including a polyol component K1 and a polyisocyanate component K2, the polyol component K1 including castor oil A1 and 1,2,3-propane triol A2, and the polyisocyanate component K2 including at least one aromatic polyisocyanate B1, the ratio in weight percent of (A1/A2) being between 4 and 50 and the ratio of all NCO groups of the aromatic polyisocyanates B1 to all the OH groups totaling (A1+A2)=1.15:1-85:1, and the total of all the OH groups of (A1+A2) being >93% of the total of all the OH groups of the two-component polyurethane composition, characterized by controllable hydrolytic degradability.Type: ApplicationFiled: September 6, 2013Publication date: September 3, 2015Inventor: Steffen Kelch