Patents by Inventor Britta Kohlstruk
Britta Kohlstruk 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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Patent number: 11370876Abstract: The present invention relates to a low-alkylphenol composition comprising a) at least one epoxy resin, b) at least one amine having at least two secondary amino groups that are both part of an organic ring system, and c) at least one salt of a strong Brønsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and ammonium ions, to processes for production thereof and to the use thereof.Type: GrantFiled: May 10, 2019Date of Patent: June 28, 2022Assignee: Evonik Operations GmbHInventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
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Patent number: 11359048Abstract: The present invention provides a composition comprising a) at least one epoxy resin, b) at least one cyclic amine of the formula (I) in which R1 to R4 is H or an organic radical, with the proviso that at least one of the R1, R2, R3 and R4 radicals ?H, and X?—(Y1)m-(A1)n-(Y2)o-(A2)p-(Y3)q-(A3)r-(Y4)s—??(II) where, independently of one another, m, n, o, p, q, r and s=0 or 1, A1, A2, A3=alkylene or alkenylene radical and Y1, Y2, Y3, Y4?NR5, PR5, O or S, where R5 independently=organic radical, where any two organic radicals selected from R1 to R5 and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 may also form one or more further rings, with the proviso that at least one of the radicals selected from R1 to R5 present and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 is substituted by at least one —NHR6 or —NH2 group, where R6=organic radical, and c) at least one salt of a strong Brønsted acid with a counterion selected from metal ions, metal-coType: GrantFiled: May 10, 2019Date of Patent: June 14, 2022Assignee: Evonik Operations GmbHInventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
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Publication number: 20200172723Abstract: The present invention relates to compositions comprising at least one epoxy resin, at least one amine having at least two secondary amino groups that are both part of an organic ring system, and at least one alkyl alcohol optionally substituted by at least one aromatic radical and/or by at least one alkenyl radical, to processes for production thereof and to the use thereof.Type: ApplicationFiled: November 15, 2019Publication date: June 4, 2020Applicant: Evonik Operations GmbHInventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
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Publication number: 20190352449Abstract: The present invention relates to a low-alkylphenol composition comprising a) at least one epoxy resin, b) at least one amine having at least two secondary amino groups that are both part of an organic ring system, and c) at least one salt of a strong Brønsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and ammonium ions, to processes for production thereof and to the use thereof.Type: ApplicationFiled: May 10, 2019Publication date: November 21, 2019Applicant: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
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Publication number: 20190352451Abstract: The present invention provides a composition comprising a) at least one epoxy resin, b) at least one cyclic amine of the formula (I) in which R1 to R4 is H or an organic radical, with the proviso that at least one of the R1, R2, R3 and R4 radicals ?H, and X?—(Y1)m-(A1)n-(Y2)o-(A2)p-(Y3)q-(A3)r-(Y4)s—??(II) where, independently of one another, m, n, o, p, q, r and s=0 or 1, A1, A2, A3=alkylene or alkenylene radical and Y1, Y2, Y3, Y4?NR5, PR5, O or S, where R5 independently=organic radical, where any two organic radicals selected from R1 to R5 and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 may also form one or more further rings, with the proviso that at least one of the radicals selected from R1 to R5 present and any radicals present in the alkylene and/or alkenylene radicals A1, A2, A3 is substituted by at least one —NHR6 or —NH2 group, where R6=organic radical, and c) at least one salt of a strong Brønsted acid with a counterion selected from metal ioType: ApplicationFiled: May 10, 2019Publication date: November 21, 2019Applicant: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Dirk Fuchsmann, Britta Kohlstruk, Annette Sandkühler
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Patent number: 10472460Abstract: The present invention relates to the use of substituted benzyl alcohols as modifiers in epoxy systems.Type: GrantFiled: November 4, 2013Date of Patent: November 12, 2019Assignee: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Martina Ortelt, Dirk Fuchsmann, Britta Kohlstruk, Elke Gollan, Andrea Henschke, Jens Hillen
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Patent number: 10392469Abstract: Epoxy resin compositions containing at least one resin component and at least one hardener component are suitable as a thermoset matrix for production of semi-finished fiber matrix products and cured fiber matrix laminates known as composites.Type: GrantFiled: December 12, 2016Date of Patent: August 27, 2019Assignee: Evonik Degussa GmbHInventors: Martina Ortelt, Dirk Fuchsmann, Sebastian de Nardo, Eike Langkabel, Britta Kohlstruk, Annette Sandkuehler, Ralph Aldridge, Katharina Karns
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Patent number: 10280252Abstract: Latent epoxy resin formulations are suitable for liquid impregnation processes for production of fiber composite materials.Type: GrantFiled: December 12, 2016Date of Patent: May 7, 2019Assignee: Evonik Degussa GmbHInventors: Martina Ortelt, Dirk Fuchsmann, Eike Langkabel, Britta Kohlstruk, Jaclyn Balthasar
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Patent number: 10155840Abstract: Epoxy compositions containing at least one resin component and at least one hardener component, are suitable as a thermoset matrix for production of semi-finished fiber matrix products and cured fiber matrix laminates.Type: GrantFiled: December 12, 2016Date of Patent: December 18, 2018Assignee: Evonik Degussa GmbHInventors: Martina Ortelt, Eike Langkabel, Dirk Fuchsmann, Britta Kohlstruk, Katharina Karns
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Patent number: 10029427Abstract: The invention relates to a method for producing storage-stable polyurethane prepregs and molding bodies produced therefrom (composite components), which can be obtained by a method using a polyurethane composition in solution and by impregnation of fiber-reinforced materials such as of woven fabrics and laid scrim using reactive polyurethane compositions.Type: GrantFiled: May 30, 2011Date of Patent: July 24, 2018Assignee: Evonik Degussa GmbHInventors: Friedrich Georg Schmidt, Rainer Lomoelder, Martina Ortelt, Britta Kohlstruk, Emmanouil Spyrou, Holger Loesch, Dirk Fuchsmann
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Publication number: 20180162991Abstract: Latent epoxy resin formulations are suitable for liquid impregnation processes for production of fibre composite materials.Type: ApplicationFiled: December 12, 2016Publication date: June 14, 2018Applicant: Evonik Degussa GmbHInventors: Martina ORTELT, Dirk FUCHSMANN, Eike LANGKABEL, Britta KOHLSTRUK, Jaclyn BALTHASAR
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Patent number: 9994671Abstract: A curable composition including an epoxy resin, an open-chain polyamine, and a compound of the formula (I); a hardened composition prepared by curing the curable composition; a process for coating a surface or impregnating a textile sheet, including applying and hardening the curable composition; and a surface, a fiber composite material, a coating, or an adhesive including the hardened composition,Type: GrantFiled: January 15, 2014Date of Patent: June 12, 2018Assignee: EVONIK DEGUSSA GMBHInventors: Martina Ortelt, Dirk Fuchsmann, Eike Langkabel, Britta Kohlstruk, Katharina Karns
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Publication number: 20170166687Abstract: Epoxy resin compositions containing at least one resin component and at least one hardener component are suitable as a thermoset matrix for production of semi-finished fibre matrix products and cured fibre matrix laminates known as composites.Type: ApplicationFiled: December 12, 2016Publication date: June 15, 2017Applicant: Evonik Degussa GmbHInventors: Martina ORTELT, Dirk FUCHSMANN, Sebastian de NARDO, Eike LANGKABEL, Britta KOHLSTRUK, Annette SANDKUEHLER, Ralph ALDRIDGE, Katharina KARNS
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Publication number: 20170166688Abstract: Epoxy compositions containing at least one resin component and at least one hardener component, are suitable as a thermoset matrix for production of semi-finished fibre matrix products and cured fibre matrix laminates.Type: ApplicationFiled: December 12, 2016Publication date: June 15, 2017Applicant: Evonik Degussa GmbHInventors: Martina ORTELT, Eike LANGKABEL, Dirk FUCHSMANN, Britta KOHLSTRUK, Katharina KARNS
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Patent number: 9676898Abstract: The invention relates to curable compositions comprising at least one epoxy resin and at least one hardener wherein the hardener is a compound of formula (I) or (II) where R1 and R2 are each independently selected from the group of substituents having the formula —(CH2)x—NH2 and x is in each case independently 0, 1, 2, 3 or 4, to surfaces comprising such compositions, to methods comprising applying a coating material comprising such compositions and to the use of such compositions as surface protection.Type: GrantFiled: August 21, 2013Date of Patent: June 13, 2017Assignee: Evonik Degussa GmbHInventors: Martina Ortelt, Emmanouil Spyrou, Jan Christoph Pfeffer, Dirk Fuchsmann, Britta Kohlstruk, Thomas Haas
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Publication number: 20150376327Abstract: The present invention relates to a curable or hardened composition comprising at least one epoxy resin, one open-chain polyamine and one compound of the formula (I) where the moieties R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19 and R20 respectively and mutually independently are selected from the group comprising hydrogen, methyl, ethyl, propyl, isopropyl and amine, with the proviso that at least one moiety from the group comprising R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 is amine and at least one moiety from the group comprising R11, R12, R13, R14, R15, R16, R17, R18, R19 and R20 is amine; to use of a hardener combination comprising an aliphatic diamine and a compound of the formula (I) for the curing of epoxy resin; to a process for the coating of a surface or for the impregnation of a textile sheet, comprising the steps of (a) application and (b) hardening of the curable composition, and also to a surface, fibre composite material, coating or adhesive compriType: ApplicationFiled: January 15, 2014Publication date: December 31, 2015Applicant: Evonik Degussa GmbHInventors: Martina ORTELT, Dirk FUCHSMANN, Eike LANGKABEL, Britta KOHLSTRUK, Katharina KARNS
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Publication number: 20150337182Abstract: The present invention relates to the use of substituted benzyl alcohols as modifiers in epoxy systems.Type: ApplicationFiled: November 4, 2013Publication date: November 26, 2015Inventors: Emmanouil SPYROU, Martina ORTELT, Dirk FUCHSMANN, Britta KOHLSTRUK, Elke GOLLAN, Andrea HENSCHKE, Jens HILLEN
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Publication number: 20150203629Abstract: The invention relates to curable compositions comprising at least one epoxy resin and at least one hardener wherein the hardener is a compound of formula (I) or (II) where R1 and R2 are each independently selected from the group of substituents having the formula —(CH2)x—NH2 and x is in each case independently 0, 1, 2, 3 or 4, to surfaces comprising such compositions, to methods comprising applying a coating material comprising such compositions and to the use of such compositions as surface protection.Type: ApplicationFiled: August 21, 2013Publication date: July 23, 2015Applicant: Evonik Industries AGInventors: Martina Ortelt, Emmanouil Spyrou, Jan Christoph Pfeffer, Dirk Fuchsmann, Britta Kohlstruk, Thomas Haas
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Publication number: 20130303042Abstract: The invention relates to a method for producing storage-stable polyurethane prepregs and molding bodies produced therefrom (composite components), which can be obtained by a method using a polyurethane composition in solution and by impregnation of fibre-reinforced materials such as of woven fabrics and laid scrim using reactive polyurethane compositions.Type: ApplicationFiled: May 30, 2011Publication date: November 14, 2013Applicant: Evonik Degussa GmbHInventors: Friedrich Georg Schmidt, Rainer Lomoelder, Martina Ortelt, Britta Kohlstruk, Emmanouil Spyrou, Holger Loesch, Dirk Fuchsmann