Patents by Inventor Florian Stempfle
Florian Stempfle 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).
-
Patent number: 11965056Abstract: The invention relates to a polymer composition that can be produced by (a) reacting an NCO-reactive polymer having exactly one NCO-reactive group per molecule, with a diisocyanate, the molar ratio of the diisocyanate molecule to the NCO-reactive groups of the NCO-reactive polymer being at least 2:1; and (b) reacting the residual NCO groups in the reaction product from step a) with an NCO-reactive silane. The invention also relates to a moisture-reactive composition containing said polymer composition, to methods for producing the polymer composition, and to moisture-reactive compositions containing said polymer composition. Finally, the invention relates to the use of the polymer composition as a drying agent for moisture-curing adhesives, sealants and coating agents.Type: GrantFiled: August 14, 2019Date of Patent: April 23, 2024Assignee: Covestro Intellectual Property GmbH & Co. KGInventors: Christoph Thiebes, Florian Stempfle, Klaus Lorenz, Ute Nattke
-
Patent number: 11905360Abstract: The invention relates to a method for producing a polymer comprising the following steps: (A) depositing a radically cross-linkable resin, obtaining a radically cross-linked resin; and (B) treating the radically cross-linked resin under conditions which are sufficient to trigger a chemical reaction that is different from the radical cross-linking in the radically cross-linked resin. The radically cross-linkable resin comprises a curable component, in which there are NCO groups, olefinic C?C double bonds and epoxide groups, and the chemical reaction in the radically cross-linked resin that is different from the radical cross-linking is the reaction of NCO groups and epoxide groups to form oxazolidinone groups.Type: GrantFiled: October 12, 2018Date of Patent: February 20, 2024Assignee: STRATASYS, INC.Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
-
Patent number: 11834545Abstract: A method for producing polyurethanes containing alkoxysilane groups comprises the step of reacting a compound containing at least one NCO group with a compound containing at least one Zerewitinoff-active H atom in the presence of a catalyst component, wherein the compound containing at least one NCO group and/or the compound containing at least one Zerewitinoff-active H atom contain at least one alkoxysilane group, to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for producing a curable polymer, a curable polymer, a cured polymer, and the use thereof. The polymers contain a complex of a lanthanide with at least one beta-diketonate ligand, preferably Yb(acac)3, and are free from organic tin compounds.Type: GrantFiled: December 14, 2018Date of Patent: December 5, 2023Assignee: Covestro Deutschland AGInventors: Christoph Thiebes, Florian Stempfle, Hans-Josef Laas, Beate Baumbach, Ute Nattke
-
Patent number: 11795266Abstract: The present invention relates to a process for preparing a mixed silane-terminated polymer by reacting a polyol component A) with a diisocyanate component B) comprising 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate), at least one isocyanatosilane C) and an aminosilane E), in which the urethanization reaction is carried out in the presence of at least one catalyst D) which is free of organically bonded tin. The invention further relates to the use of the polymers thus obtained.Type: GrantFiled: May 25, 2020Date of Patent: October 24, 2023Assignee: Covestro Intellectual Property GmbH & Co. KGInventors: Florian Stempfle, Hans-Josef Laas, Christoph Thiebes
-
Publication number: 20220348708Abstract: The invention relates to a process of preparing allophanate- and/or thioallophanate group-containing compounds comprising the following steps: reacting A) at least one component having at least one uretdione group with B) at least one component having at least one hydroxyl and/or thiol group, in the presence C) of at least one catalyst, containing a structural element of the general formulae (I) and/or (II), wherein R1, R2, R3, R4, R5 and R6 independently of each other represent the same or different radicals meaning saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic, araliphatic or aromatic organic radicals with 1 to 18 carbon atoms that are substituted or unsubstituted and/or have heteroatoms in the chain, the radicals being capable of forming, even when combined with each other and optionally together with an additional heteroatom, rings with 3 to 8 carbon atoms that can optionally be further substituted, wherein R3, R4, R5 and R6 independently of each other also can represent hydrogenType: ApplicationFiled: July 6, 2020Publication date: November 3, 2022Inventors: Hans-Josef Laas, Florian Stempfle, Kai Laemmerhold, Saskia Beuck, Raul Pires, Christoph Guertler, Nusret Yuva, Ralph-Georg Born, Daniel Thiel, Tuba Fatma Bayram, Sureshbabu Guduguntla, Walter Leitner
-
Publication number: 20220251280Abstract: The invention relates to a process of preparing allophanate- and/or thioallophanate group-containing compounds comprising the following steps: reacting A) at least one component having at least one uretdione group with B) at least one component having at least one hydroxyl and/or thiol group, in the presence C) of at least one catalyst, containing a structural element of the general formulae (I) and/or (II), wherein R1, R2, R3, R4, R5 and R6 independently of each other represent the same or different radicals meaning saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic, araliphatic or aromatic organic radicals with 1 to 18 carbon atoms that are substituted or unsubstituted and/or have heteroatoms in the chain, the radicals being capable of forming, even when combined with each other and optionally together with an additional heteroatom, rings with 3 to 8 carbon atoms that can optionally be further substituted, wherein R3, R4, R5 and R6 independently of each other also can represent hydrogenType: ApplicationFiled: July 6, 2020Publication date: August 11, 2022Inventors: Hans-Josef Laas, Florian Stempfle, Kai Laemmerhold, Saskia Beuck, Raul Pires, Christoph Guertler, Nusret Yuva, Ralph-Georg Born, Daniel Thiel, Sureshbabu Guduguntla, Walter Leitner
-
Patent number: 11384168Abstract: An additive manufacturing method wherein the carrier (400) is within a vessel (100), the vessel contains the free-radically crosslinkable resin (300) and a liquid (200) which is immiscible with the free-radically cross-linkable resin (300) and has a higher density than the free-radically crosslinkable resin (300), such that the free-radically crosslinkable resin (300) floats on top of the liquid (200) and, prior to each step II), the distance between the carrier (400) and the free-radically crosslinkable resin (300) is altered such that a layer of the free-radically crosslinkable resin forms above the uppermost surface (420), viewed in vertical direction, of the previously deposited layer of the construction material (600) and at least partially forms contact with this uppermost surface (420) of the previously deposited layer of the construction material (600). The free-radically crosslinkable resin (300) comprises a urethane (meth)acrylate.Type: GrantFiled: December 12, 2018Date of Patent: July 12, 2022Assignee: Covestro Deutschland AGInventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
-
Publication number: 20210317253Abstract: The invention relates to a polymer composition that can be produced by (a) reacting an NCO-reactive polymer having exactly one NCO-reactive group per molecule, with a diisocyanate, the molar ratio of the diisocyanate molecule to the NCO-reactive groups of the NCO-reactive polymer being at least 2:1; and (b) reacting the residual NCO groups in the reaction product from step a) with an NCO-reactive silane. The invention also relates to a moisture-reactive composition containing said polymer composition, to methods for producing the polymer composition, and to moisture-reactive compositions containing said polymer composition. Finally, the invention relates to the use of the polymer composition as a drying agent for moisture-curing adhesives, sealants and coating agents.Type: ApplicationFiled: August 14, 2019Publication date: October 14, 2021Inventors: Christoph Thiebes, Florian Stempfle, Klaus Lorenz, Ute Nattke
-
Publication number: 20210309793Abstract: The invention relates to a polymer composition that can be produced by (a) reacting an NCO-reactive polymer having at least two NCO-reactive groups, with a polyisocyanate, the molar ratio of polyisocyanate molecules to NCO-reactive groups of the NCO-reactive polymer being at least 1.25:1; and (b) reacting the reaction product from step a) with an NCO-reactive silane. The invention also relates to a moisture-reactive composition containing the polymer composition and to methods for producing the polymer composition and the moisture-reactive composition. Finally, the invention relates to the use of the polymer composition as a drying agent for moisture-curing adhesives, sealants and coating agents.Type: ApplicationFiled: August 14, 2019Publication date: October 7, 2021Inventors: Christoph Thiebes, Florian Stempfle, Ute Nattke
-
Patent number: 11007711Abstract: A process for manufacturing an object involves the steps of: I) depositing a radically cross-linked resin on a carrier so that a layer of a structuring material joined to the carrier is obtained, said layer corresponding to a first selected cross-section of the object; II) depositing a radically cross-linked resin on a previously applied layer of the structuring material so that an additional layer of the structuring material is obtained which corresponds to a further selected cross-section of the object and which is joined to the previously applied layer; III) repeating step II) until the object is formed, wherein the deposition of a radically cross-linked resin in steps I) and II) includes the application of a radically cross-linkable resin to the carrier or the previously applied layer and is performed at least in step II) by applying energy to a selected region of a radically cross-linkable resin, corresponding to the selected cross-section of the object, the radically cross-linkable resin having a viscosType: GrantFiled: November 8, 2018Date of Patent: May 18, 2021Assignee: Covestro Deutschland AGInventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Michael Ludewig, Christoph Tomczyk
-
Publication number: 20210054125Abstract: The invention relates to a method for producing an object from a precursor, comprising the steps: I) depositing a radically cross-linked resin on a carrier so that a layer of a construction material connected to the carrier is obtained, said layer corresponding to a first selected cross-section of the precursor; II) depositing a radically cross-linked resin on a previously applied layer of the construction material so that an additional layer of the construction material is obtained, which corresponds to a further selected cross-section of the precursor and which is connected to the previously applied layer; III) repeating step II) until the precursor is formed, wherein, at least in step II), the deposition of a radically cross-linked resin is carried out by allowing energy to act on a selected region of a radically cross-linkable resin, corresponding to the respectively selected cross-section of the object, wherein the radically cross-linkable resin has a viscosity (23° C.Type: ApplicationFiled: December 4, 2017Publication date: February 25, 2021Inventors: Dirk Achten, Thomas BÜSGEN, Florian GOLLING, Roland WAGNER, Christoph TOMCZYK, Jörge TILLACK, Christoph EGGERT, Hans-Josef LAAS, Florian STEMPFLE
-
Publication number: 20210046696Abstract: A process for manufacturing an object involves the steps of: I) depositing a radically cross-linked resin on a carrier so that a layer of a structuring material joined to the carrier is obtained, said layer corresponding to a first selected cross-section of the object; II) depositing a radically cross-linked resin on a previously applied layer of the structuring material so that an additional layer of the structuring material is obtained which corresponds to a further selected cross-section of the object and which is joined to the previously applied layer; III) repeating step II) until the object is formed, wherein the deposition of a radically cross-linked resin in steps I) and II) includes the application of a radically cross-linkable resin to the carrier or the previously applied layer and is performed at least in step II) by applying energy to a selected region of a radically cross-linkable resin, corresponding to the selected cross-section of the object, the radically cross-linkable resin having a viscosType: ApplicationFiled: November 8, 2018Publication date: February 18, 2021Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Michael Ludewig, Christoph Tomczyk
-
Publication number: 20200392275Abstract: The invention relates to a method for preparing polyurethanes containing alkoxysilane groups, said method comprising the step of reacting a compound containing at least one NCO group with a compound containing at least one Zerewitinoff-active H atom in the presence of a catalyst component, the at least one compound containing an NCO group and/or the compound containing at least one Zerewitinoff-active H atom containing at least one alkoxysilane group, so as to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for preparing a curable polymer, a curable polymer, a cured polymer, and use thereof. The polyurethanes are prepared with use of a thermally labile tin catalyst.Type: ApplicationFiled: December 12, 2018Publication date: December 17, 2020Inventors: Christoph THIEBES, Florian STEMPFLE, Ute NATTKE
-
Publication number: 20200392278Abstract: A method for producing polyurethanes containing alkoxysilane groups comprises the step of reacting a compound containing at least one NCO group with a compound containing at least one Zerewitinoff-active H atom in the presence of a catalyst component, wherein the compound containing at least one NCO group and/or the compound containing at least one Zerewitinoff-active H atom contain at least one alkoxysilane group, to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for producing a curable polymer, a curable polymer, a cured polymer, and the use thereof. The polymers contain a complex of a lanthanide with at least one beta-diketonate ligand, preferably Yb(acac)3, and are free from organic tin compounds.Type: ApplicationFiled: December 14, 2018Publication date: December 17, 2020Inventors: Christoph THIEBES, Florian STEMPFLE, Hans-Josef LAAS, Beate BAUMBACH, Ute NATTKE
-
Publication number: 20200353677Abstract: An additive manufacturing method wherein the carrier (400) is within a vessel (100), the vessel contains the free-radically crosslinkable resin (300) and a liquid (200) which is immiscible with the free-radically cross-linkable resin (300) and has a higher density than the free-radically crosslinkable resin (300), such that the free-radically crosslinkable resin (300) floats on top of the liquid (200) and, prior to each step II), the distance between the carrier (400) and the free-radically crosslinkable resin (300) is altered such that a layer of the free-radically crosslinkable resin forms above the uppermost surface (420), viewed in vertical direction, of the previously deposited layer of the construction material (600) and at least partially forms contact with this uppermost surface (420) of the previously deposited layer of the construction material (600). The free-radically crosslinkable resin (300) comprises a urethane (meth)acrylate.Type: ApplicationFiled: December 12, 2018Publication date: November 12, 2020Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
-
Publication number: 20200339729Abstract: The invention relates to a method for preparing a silane-terminated polymer by reacting a polyol A) with a diisocyanate B), an isocyanatosilane C) and an amino silane E), wherein the polyol component A) is reacted simultaneously with a mixture of at least one diisocyanate B) and one isocyanatosilane C), and the resulting product is subsequently reacted with the amino silane E) to produce the silane-terminated polymer. The method according to the invention can be used to prepare mixed silane-terminated polymers having a low viscosity.Type: ApplicationFiled: December 20, 2018Publication date: October 29, 2020Inventors: Florian STEMPFLE, Christoph THIEBES, Ute NATTKE, Hans-Josef LAAS
-
Publication number: 20200255584Abstract: The invention relates to a method for producing a polymer comprising the following steps: (A) depositing a radically cross-linkable resin, obtaining a radically cross-linked resin; and (B) treating the radically cross-linked resin under conditions which are sufficient to trigger a chemical reaction that is different from the radical cross-linking in the radically cross-linked resin. The radically cross-linkable resin comprises a curable component, in which there are NCO groups, olefinic C?C double bonds and epoxide groups, and the chemical reaction in the radically cross-linked resin that is different from the radical cross-linking is the reaction of NCO groups and epoxide groups to form oxazolidinone groups.Type: ApplicationFiled: October 12, 2018Publication date: August 13, 2020Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
-
Publication number: 20200140707Abstract: The present invention relates to a method for producing an object in an additive manufacturing process from a precursor and comprises the following steps: I) depositing a layer of a radically cross-linkable construction material, which corresponds to a first selected cross-section of the precursor, on a carrier; II) depositing a layer of a radically cross-linkable construction material, which corresponds to a further selected cross-section of the precursor, on a previously applied layer of the radically cross-linked construction material; III) repeating step II) until the precursor is formed. The radically cross-linkable construction material comprises a thermoplastic radically cross-linkable polyurethane with a urethane group content of ?5% by weight and a photoinitiator. The radically cross-linkable construction material is also heated to a processing temperature that is greater than the melting point of the radically cross-linkable polyurethane. After step III) the precursor having a temperature of 20° C.Type: ApplicationFiled: June 29, 2018Publication date: May 7, 2020Inventors: Dirk Achten, Thomas Buesgen, Christoph Tomczyk, Michael Ludewig, Thomas Faecke, Roland Wagner, Florian Stempfle