Patents by Inventor Rainer Schoenfeld
Rainer Schoenfeld 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: 20230159693Abstract: The present invention relates to curable compositions comprising (a) N-arylated benzoxazines, and (b) a prepolymer produced from a diisocyanate having two isocyanate groups with different reactivity. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpreg.Type: ApplicationFiled: January 3, 2023Publication date: May 25, 2023Applicant: KANEKA AEROSPACE LLCInventors: Stefan KREILING, Rainer SCHOENFELD, Andreas TADEN, Michael KUX, Harald KUSTER, Ursula TENHAEF, Stanley Leroy LEHMANN
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Patent number: 11180624Abstract: A thermally expandable composition that comprises at least one organic compound having at least one cyclic carbonate group as a blowing agent, at least one catalyst for the blowing agent, at least one reactive binder and at least one hardener and/or accelerator. Also provided are molded bodies containing the composition, and a method for sealing and filling hollow spaces in components, in order to strengthen or stiffen components, in particular hollow components, and for adhering movable components through use of molded bodies of this type, as well as to the use of corresponding cyclic organic carbonates as a blowing agent in thermally expandable compositions.Type: GrantFiled: June 18, 2018Date of Patent: November 23, 2021Inventors: Sascha Poeller, Rainer Schoenfeld, Thomas Bachon, Klaus Rappmann, Rainer Kohlstrung, Constance Prost-Boucle
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Publication number: 20210102035Abstract: The present invention relates to curable compositions comprising (a) N-arylated benzoxazines, and (b) a prepolymer produced from a diisocyanate having two isocyanate groups with different reactivity. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpreg.Type: ApplicationFiled: October 20, 2020Publication date: April 8, 2021Applicant: KANEKA AEROSPACE LLCInventors: Stefan Kreiling, Rainer Schoenfeld, Andreas Taden, Michael Kux, Herald Kuster, Ursula Tenhaef, Stanley Leroy Lehmann
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Patent number: 10787536Abstract: The present invention relates to a catalyst composition for curing resins containing epoxy groups, in particular epoxy/polyurethane hybrid resins, the catalyst composition containing an imidazolium salt, in addition to a base, as well as a method for curing such resins in the presence of the catalyst composition, to the use of the catalyst composition for curing resins containing epoxy groups, to resin systems comprising a resin containing epoxy groups and the catalyst composition, and to a dosing system that comprises the resin and the catalyst composition.Type: GrantFiled: June 16, 2017Date of Patent: September 29, 2020Assignee: Henkel AG & Co. KGaAInventors: Christian Holtgrewe, Harald Kuester, Thomas Bachon, Rainer Schoenfeld
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Patent number: 10689476Abstract: The present invention relates to a method for producing a cured composition, which has at least one oxazolidinone ring and at least one isocyanurate ring and is crosslinked thereby, starting from a liquid reaction mixture comprising: (a) at least one liquid, aromatic epoxy resin; (b) at least one liquid, aromatic polyisocyanate; and (c) a catalyst composition; relative to the at least one polyisocyanate, the at least one epoxy resin is used in amounts such that the molar equivalent ratio of epoxide groups to isocyanate groups is at least 0.4; and curing the reaction mixture to give a cured polymer composition comprising at least one oxazolidinone ring and at least one isocyanurate ring, and also to the cured compositions obtainable by these methods.Type: GrantFiled: June 14, 2017Date of Patent: June 23, 2020Assignee: Henkel AG & Co. KGaAInventors: Christian Holtgrewe, Harald Küster, Thomas Bachon, Andreas Ferencz, Olaf Lammerschop, Rainer Schönfeld, Claudia Mai
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Patent number: 10329465Abstract: The present invention relates to adhesive compositions containing a prepolymer which can be obtained by reacting a reaction mixture containing: at least one epoxy resin; at least one polyetherdiamine or polyethertriamine; at least one carboxyl-terminated butadiene-acrylonitrile copolymer (CTBN); and rubber particles having a core/shell structure. The invention also relates to methods for curing said compositions, to the cured adhesive compositions thus obtained, to the use thereof for bonding components and to the components thus obtained.Type: GrantFiled: June 19, 2017Date of Patent: June 25, 2019Assignee: Henkel AG & Co. KGaAInventors: Christian Holtgrewe, Harald Kuester, Thomas Bachon, Rainer Schoenfeld
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Patent number: 10179832Abstract: The present invention relates to a catalyst composition for curing epoxy group containing compounds comprising a base and a quaternary ammonium salt, of Formula (I): with R1, R2, R3, R4, R5, Y, A and X being as defined herein. Also encompassed are adhesive compositions containing said catalyst composition and the use of the catalyst composition.Type: GrantFiled: October 14, 2016Date of Patent: January 15, 2019Assignee: Henkel AG & Co. KGaAInventors: Christian Holtgrewe, Pablo Walter, Thomas Bachon, Rainer Schoenfeld
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Publication number: 20180298156Abstract: A thermally expandable composition that comprises at least one organic compound having at least one cyclic carbonate group as a blowing agent, at least one catalyst for the blowing agent, at least one reactive binder and at least one hardener and/or accelerator. The invention also relates to molded bodies containing said composition, and a method for sealing and filling hollow spaces in components, in order to strengthen or stiffen components, in particular hollow components, and for adhering movable components through use of molded bodies of this type, as well as to the use of corresponding cyclic organic carbonates as a blowing agent in thermally expandable compositions.Type: ApplicationFiled: June 18, 2018Publication date: October 18, 2018Inventors: Sascha Poeller, Rainer Schoenfeld, Thomas Bachon, Klaus Rappmann, Rainer Kohlstrung, Constance Prost-Boucle
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Publication number: 20180105627Abstract: The present application is directed to a crosslinkable copolymer comprising styrene and 4-vinyl benzocyclobutene monomers and at least one alkoxysilane group, a method for generating an ultrathin copolymer film, which contains at least one crosslinked copolymer as defined herein, on a silicon-containing substrate, a composition or film comprising at least one copolymer as defined herein, as well as the use of this copolymer or composition containing it for electrical insulation and/or bonding of silicon-containing substrates.Type: ApplicationFiled: December 15, 2017Publication date: April 19, 2018Inventors: Rainer Schoenfeld, Holger Frey, Daniel Leibig
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Publication number: 20180051119Abstract: The present invention relates to a method for producing a cured composition, which has at least one oxazolidinone ring and at least one isocyanurate ring and is crosslinked thereby, starting from a liquid reaction mixture comprising: (a) at least one liquid, aromatic epoxy resin; (b) at least one liquid, aromatic polyisocyanate; and (c) a catalyst composition; relative to the at least one polyisocyanate, the at least one epoxy resin is used in amounts such that the molar equivalent ratio of epoxide groups to isocyanate groups is at least 0.4; and curing the reaction mixture to give a cured polymer composition comprising at least one oxazolidinone ring and at least one isocyanurate ring, and also to the cured compositions obtainable by these methods.Type: ApplicationFiled: June 14, 2017Publication date: February 22, 2018Inventors: Christian Holtgrewe, Harald Küster, Thomas Bachon, Andreas Ferencz, Olaf Lammerschop, Rainer Schönfeld, Claudia Mai
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Patent number: 9868812Abstract: The present invention provides a two-part mechano-responsive composition, comprising: Part I: a tetra-glycidyl amine multifunctional epoxy resin represented by the general formula (I); and Part II: a polythiol and an amine. The cured composition has a mechano-responsive property without adding any dyes or luminescence agents, and by subjected to mechanical stimuli, the cured composition changes its color, and the color is in the visible spectrum range, which can be easily checked with naked eyes; and the color change is reversible.Type: GrantFiled: February 1, 2016Date of Patent: January 16, 2018Assignee: Henkel AG & Co. KGaAInventors: Haiping Wu, Jingfen Zhang, Rainer Schoenfeld, Thomas Bachon
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Patent number: 9828534Abstract: The present application provides agents for producing an impact-modified epoxy adhesive encompassing at least two components A and B packaged separately from each other, wherein (a) component A contains at least one compound having two or more isocyanate groups together with one or more further additives, (b) component B contains at least one compound which has at least two reactive groups selected from hydroxyl groups, thiol groups, primary amino groups and secondary amino groups and is simultaneously free from epoxy groups, together with one or more further additives, (c) at least one of components A and/or B contains at least one epoxide prepolymer as an additive, (d) at least one of components A and/or B contains at least one latent hardener for epoxide prepolymers as an additive, and (e) components A and B contain no blowing agent that is capable of being heat activated.Type: GrantFiled: October 11, 2013Date of Patent: November 28, 2017Assignee: Henkel AG & Co. KGaAInventors: Martin Renkel, Emilie Barriau, Martin Hornung, Rainer Schoenfeld
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Publication number: 20170321094Abstract: The present invention relates to adhesive compositions containing a prepolymer which can be obtained by reacting a reaction mixture containing: at least one epoxy resin; at least one polyetherdiamine or polyethertriamine; at least one carboxyl-terminated butadiene-acrylonitrile copolymer (CTBN); and rubber particles having a core/shell structure. The invention also relates to methods for curing said compositions, to the cured adhesive compositions thus obtained, to the use thereof for bonding components and to the components thus obtained.Type: ApplicationFiled: June 19, 2017Publication date: November 9, 2017Inventors: Christian Holtgrewe, Harald Kuester, Thomas Bachon, Rainer Schoenfeld
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Patent number: 9790341Abstract: The subject matter of the present application is a thermally expandable preparation that can be pumped at application temperatures below 70° C., containing (a) at least one first epoxy resin E1 that has an epoxy equivalent weight of at most 280 g/eq and a viscosity of at most 1250 Pa*s at 25° C., (b) at least one second epoxy resin E2 that has an epoxy equivalent weight of at least 300 g/eq and a viscosity of at most 250 Pa*s at 25° C., (c) at least one hardener that can be thermally activated, (d) at least one propellant that can be thermally activated, and (e) at least 1 wt. % of organic fibres having a fibre length of 0.2 mm to 10 mm.Type: GrantFiled: September 19, 2014Date of Patent: October 17, 2017Assignee: Henkel AG & Co. KGaAInventors: Emilie Barriau, Martin Renkel, Rainer Schoenfeld, Sven Wucherpfennig, Tim Welters
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Publication number: 20170283543Abstract: The present invention relates to a catalyst composition for curing resins containing epoxy groups, in particular epoxy/polyurethane hybrid resins, the catalyst composition containing an imidazolium salt, in addition to a base, as well as a method for curing such resins in the presence of the catalyst composition, to the use of the catalyst composition for curing resins containing epoxy groups, to resin systems comprising a resin containing epoxy groups and the catalyst composition, and to a dosing system that comprises the resin and the catalyst composition.Type: ApplicationFiled: June 16, 2017Publication date: October 5, 2017Inventors: Christian Holtgrewe, Harald Kuester, Thomas Bachon, Rainer Schoenfeld
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Publication number: 20170029558Abstract: The present invention relates to a catalyst composition for curing epoxy group containing compounds comprising a base and a quaternary ammonium salt, of Formula (I): with R1, R2, R3, R4, R5, Y, A and X being as defined herein. Also encompassed are adhesive compositions containing said catalyst composition and the use of the catalyst composition.Type: ApplicationFiled: October 14, 2016Publication date: February 2, 2017Inventors: Christian Holtgrewe, Pablo Walter, Thomas Bach on, Rainer Schoenfeld
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Patent number: 9428679Abstract: The present invention relates to flame-retardant polymerizable compositions comprising at least one benzoxazine compound and particular phosphorus-containing polymers. The present invention further provides adhesives, sealants or coating materials comprising the polymerizable composition according to the invention, and polymerization products of said composition.Type: GrantFiled: February 17, 2015Date of Patent: August 30, 2016Assignee: Henkel AG & Co. KGaAInventors: Emilie Barriau, Stefan Kreiling, Rainer Schoenfeld, Manfred Doering
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Publication number: 20160207252Abstract: The present invention relates to a method for forming a welded bond between polymer surfaces, comprising (i) applying a welding promoter composition to a to-be-welded area of one or both polymer surface(s), wherein the welding promoter composition comprises particles with a particle size range of 0.1 to 1000 ?m, the particles being made of a material that is inert towards a chemical reaction with the first and/or second polymer surface; (ii) applying energy to the to-be-welded area of the first polymer surface, the second polymer surface or both, the energy being sufficient to melt at least a portion of the polymer in the to-be-welded area of the polymer surface, and contacting the to-be-welded areas of the polymer surfaces; and (iii) allowing the molten polymer in the to-be-welded area to solidify so that a welded bond is formed between the polymer surfaces. The invention further relates to the thus produced articles and the use of the described compositions as welding promoters.Type: ApplicationFiled: February 29, 2016Publication date: July 21, 2016Inventors: Pablo WALTER, Martin RENKEL, Christian HOLTGREWE, Thomas BACHON, Rainer SCHOENFELD, Katherine M. HELMETAG
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Patent number: 9371475Abstract: The present invention provides a gel time controllable epoxy adhesive, which includes a first part comprising an epoxy resin containing two or more epoxy groups in one molecule, and a second part comprising a thiol curing agent, wherein a peroxide is comprised in part A, part B and/or a third separate part C.Type: GrantFiled: April 11, 2014Date of Patent: June 21, 2016Assignees: Henkel IP & Holding GmbH, Henkel AG & Co. KGaAInventors: Haiping Wu, Rainer Schoenfeld, Nigel Fay, Jingfen Zhang
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Publication number: 20160168314Abstract: The present invention provides a two-part mechano-responsive composition, comprising: Part I: a tetra-glycidyl amine multifunctional epoxy resin represented by the general formula (I); and Part II: a polythiol and an amine. The cured composition has a mechano-responsive property without adding any dyes or luminescence agents, and by subjected to mechanical stimuli, the cured composition changes its colour, and the colour is in the visible spectrum range, which can be easily checked with naked eyes; and the colour change is reversible.Type: ApplicationFiled: February 1, 2016Publication date: June 16, 2016Inventors: Haiping Wu, Jingfen Zhang, Rainer Schoenfeld, Thomas Bachon