Patents by Inventor Karl Kuhmann

Karl Kuhmann 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).

  • Publication number: 20230272190
    Abstract: A thermoplastic component may include a matrix component (A) and a filler component (B). The matrix component (A) may include a polyetheretherketone and the filler component (B) may include inorganic particles and carbon-containing particles. The overall composition may include equal or different portions, as filler component (B), of hydrophobic silicon dioxide, carbon fibres, titanium dioxide particles, graphite particles, and a particulate lubricant selected from divalent metallic sulfides and alkaline earth metal sulfates.
    Type: Application
    Filed: July 9, 2021
    Publication date: August 31, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Karl KUHMANN, Reinhard LINEMANN, Joscha SANDHUSEN, Frank LORENZ, Vera SCHIEMANN, Alois K. SCHLARB, Lena JOSCH, Michael BUSSE, Leyu LIN
  • Patent number: 11504939
    Abstract: A flexible pipe of multilayer structure with unbonded layers, where the pipe has an interior lining which comprises the following layers: a) at least one layer of which the material is composed of a moulding composition based on a polymer selected from the group of: polyarylene ether ketone, polyphenyl sulphone, polyphenylene sulphide, polyarylene ether ketone/polyphenylene sulphide blend and semiaromatic polyamide, where from 5 to 100 mol % of the dicarboxylic acid content thereof derives from an aromatic dicarboxylic acid having from 8 to 22 carbon atoms, and which has a crystallite melting point Tm of at least 260° C.; b) at least one layer of which the material is composed of a fluoropolymer moulding composition can be operated at temperatures above 130° C. The pipe has particular suitability for offshore applications in the production of oil or of gas.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: November 22, 2022
    Assignee: EVONIK OPERATIONS GmbH
    Inventors: Karl Kuhmann, Andreas Dowe, Rainer Goering
  • Patent number: 11078390
    Abstract: The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: August 3, 2021
    Assignees: Evonik Operations GmbH, SI-Coatings GmbH
    Inventors: Willi Henkenjohann, Karl Kuhmann, Maximilian Gruhn, Andreas Pawlik, Martin Risthaus, Klaus Welsch, Sven Mang
  • Patent number: 10603872
    Abstract: The invention provides a process for producing a hybrid component comprising metal and plastic. The process comprises the steps of a) pretreating the metal surface by applying at least one conversion layer, b) applying at least one layer of an adhesion promoter composition and c) bonding the metal to the plastic. The adhesion promoter composition comprises at least one copolyamide-based hotmelt adhesive.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: March 31, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Maximilian Gruhn, Karl Kuhmann, Martin Risthaus
  • Patent number: 10464296
    Abstract: A multilayer composite containing the following layers: 1. a first layer (layer I) of a moulding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; and II. a second layer (layer II) of a moulding compound containing at least 60 wt. % of a mixture of the following components: 1) 75 to 100 parts by wt. of a partly aromatic copolyamide and 2) 25 to 0 parts by wt. of an olefinic copolymer as impact modifier with the proviso that in the moulding compound of layer II the mixture of components 1) and 2) comprises at least 5 fewer parts by wt, of olefinic copolymer than in the moulding compound of layer I, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: November 5, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Jasmin Berger, Rainer Goering, Karl Kuhmann
  • Publication number: 20190185724
    Abstract: The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Applicants: Evonik Degussa GmbH, SI-Coatings GmbH
    Inventors: Willi Henkenjohann, Karl Kuhmann, Maximilian Gruhn, Andreas Pawlik, Martin Risthaus, Klaus Welsch, Sven Mang
  • Patent number: 10273390
    Abstract: The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: April 30, 2019
    Assignees: Evonik Degussa GmbH, SI-Coatings GmbH
    Inventors: Willi Henkenjohann, Karl Kuhmann, Maximilian Gruhn, Andreas Pawlik, Martin Risthaus, Klaus Welsch, Sven Mang
  • Patent number: 10246575
    Abstract: The invention relates to a polymer composition, and to a semifinished plastics product, the surface of which has been formed at least to some extent from the polymer composition. The invention further relates to a production process associated therewith for the semifinished plastics product. A feature of the polymer composition is that it comprises from 50 to 99.7% by weight of a polymer and from 0.3 to 20% by weight of one or more adhesion-promoting additives. The invention further relates to plastics-metal hybrid components and production of these.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 2, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Karl Kuhmann, Maximilian Gruhn, Olivier Farges, Martin Risthaus, Kathrin Lehmann
  • Publication number: 20180080586
    Abstract: A multilayer hollow body has the following layers: I. an inner layer (layer I) containing a moulding composition based on PA612, PA610, PA1010, PA1012 and/or PA1212 and copolymers thereof and mixtures thereof; II. optionally an adhesion promoter layer (layer II) containing a moulding composition based on the following components: a) 0 to 80 parts by weight of a polyamide selected from PA6, PA66, PA6/66 and mixtures thereof, b) 0 to 100 parts by weight of a polyamine-polyamide copolymer and c) 0 to 80 parts by weight of a polyamide selected from PA11, PA12, PA612, PA1010, PA1012, PA1212 and mixtures thereof, where the sum total of the parts by weight of components a), b) and c) is 100; III. a layer (layer III) containing an ethylene-vinyl alcohol copolymer moulding composition is executed in such a way that not more than 0.2 g/m2 of insoluble extract and not more than 7.
    Type: Application
    Filed: September 19, 2017
    Publication date: March 22, 2018
    Applicant: Evonik Degussa GmbH
    Inventors: Jasmin BERGER, Karl KUHMANN, Mario RESING, Jan HEIMINK, Olivier FARGES, Stefan ALTKEMPER
  • Publication number: 20170121503
    Abstract: The invention relates to a polymer composition, and to a semifinished plastics product, the surface of which has been formed at least to some extent from the polymer composition. The invention further relates to a production process associated therewith for the semifinished plastics product. A feature of the polymer composition is that it comprises from 50 to 99.7% by weight of a polymer and from 0.3 to 20% by weight of one or more adhesion-promoting additives. The invention further relates to plastics-metal hybrid components and production of these.
    Type: Application
    Filed: March 31, 2015
    Publication date: May 4, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Karl KUHMANN, Maximilian GRUHN, Olivier FARGES, Martin RISTHAUS, Kathrin LEHMANN
  • Publication number: 20160271919
    Abstract: A multilayer composite containing the following layers: 1. a first layer (layer I) of a moulding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; and II. a second layer (layer II) of a moulding compound containing at least 60 wt. % of a mixture of the following components: 1) 75 to 100 parts by wt. of a partly aromatic copolyamide and 2) 25 to 0 parts by wt. of an olefinic copolymer as impact modifier with the proviso that in the moulding compound of layer II the mixture of components 1) and 2) comprises at least 5 fewer parts by wt, of olefinic copolymer than in the moulding compound of layer I, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Jasmin BERGER, Rainer GOERING, Karl KUHMANN
  • Patent number: 9314989
    Abstract: The invention relates to a flexible pipe having a multi-layered structure comprising unbonded layers, comprising an inner lining having the following layer arrangement: a) an innermost layer made of a fluoropolymer molding compound, b) an intermediate layer made of a molding compound on the basis of an olefinic polymer, which is selected from the group consisting of polyethylene, isotactic polypropylene, syndiotactic polypropylene and syndiotactic polystyrene, c) an outer layer made of a polyamide molding compound, wherein the layer made of a polyamide molding compound is particularly efficiently protected against hydrolysis. The pipe is thus particularly suited for offshore applications in oil or gas production.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: April 19, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Karl Kuhmann, Andreas Dowe, Rainer Goering
  • Patent number: 9309998
    Abstract: The invention relates to a flexible tube of multilayer construction having unbonded layers, wherein at least one layer is formed in that a tape made of a plastic molding compound is spirally wound about a further inner layer, wherein the upper and lower layers of the tape are simultaneously or subsequently welded to each other at overlapping regions.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: April 12, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Karl Kuhmann, Andreas Dowe, Rainer Goering
  • Publication number: 20150375478
    Abstract: The invention relates to hybrid components comprising at least one fibre composite material as material B and at least one material A. Material A is selected from plastics, metals, ceramic compositions, wood, glass, composite materials, textile fibres and from prefabricated products produced from textile fibres. Material A is bonded to material B by at least one coating of an adhesion promoter composition comprising at least one copolyamide-based hotmelt adhesive.
    Type: Application
    Filed: January 29, 2014
    Publication date: December 31, 2015
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Maximilian GRUHN, Karl KUHMANN, Martin RISTHAUS
  • Publication number: 20150361304
    Abstract: The invention provides a process for producing a hybrid component comprising metal and plastic. The process comprises the steps of a) pretreating the metal surface by applying at least one conversion layer, b) applying at least one layer of an adhesion promoter composition and c) bonding the metal to the plastic. The adhesion promoter composition comprises at least one copolyamide-based hotmelt adhesive.
    Type: Application
    Filed: January 29, 2014
    Publication date: December 17, 2015
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Maximilian GRUHN, Karl KUHMANN, Martin RISTHAUS
  • Publication number: 20150361316
    Abstract: The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.
    Type: Application
    Filed: January 29, 2014
    Publication date: December 17, 2015
    Applicants: Evonik Degussa GmbH, SI-Coating GmbH
    Inventors: Willi HENKENJOHANN, Karl KUHMANN, Maximilian GRUHN, Andreas PAWLIK, Martin RISTHAUS, Klaus WELSCH, Sven MANG
  • Publication number: 20150282566
    Abstract: The invention relates to studded shoes which comprise metal studs and a plastics sole. Studs and sole are connected to one another by a coating of an adhesion promoter composition, wherein the composition comprises at least one copolyamide-based hot-melt adhesive. The studded shoe can be used in the sports sector or hiking sector.
    Type: Application
    Filed: July 10, 2014
    Publication date: October 8, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Maximilian Gruhn, Klaus Huelsmann, Karl Kuhmann, Michael Beyer, Martin Risthaus, Jun Shi
  • Patent number: 9151418
    Abstract: A flexible pipe of multilayer structure which comprises the following layers, from the inside to the outside: an interior lining; an inner reinforcement layer; a layer of molded electrically conductive plastic; an outer reinforcement layer; and an exterior sheath. The electrically conductive plastic layer is in electrical contact with the two reinforcement layers, and the two reinforcement layers can be connected to a source of electrical current. It is thus possible to achieve efficient heating of the pipe, and it can therefore be used for conveying oil in cold regions.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 6, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Rainer Goering, Andreas Dowe, Karl Kuhmann, Maximilian Gruhn, Juergen Franosch
  • Patent number: 9133965
    Abstract: A flexible pipe which can be heated efficiently, and may therefore be used for conveying oil in cold regions, is provided. The pipe comprises in order from inside to outside: an interior lining; a wound tape; and at least one reinforcement layer. The wound tape contains a first exterior layer of a plastics molding composition that is not electrically conductive; an intermediate layer of an electrically conductive plastics molding composition; and a second exterior layer of a plastics molding composition that is not electrically conductive. A volume resistivity to IEC 60093 of the intermediate layer is in the range from 10?3 to 1010 ?m, and the intermediate layer comprises at least two metallic conductors embedded into the plastic molding composition along an entire length of the tape in such a way that, the two conductors do not touch one another.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: September 15, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Rainer Goering, Andreas Dowe, Karl Kuhmann, Maximilian Gruhn, Juergen Franosch
  • Publication number: 20140338780
    Abstract: A compressed-air brake line which comprises: I) an external layer made of a moulding composition which comprises at least 50% by weight of PA11 and/or PA12, and II) an internal layer made of a moulding composition which comprises at least 50% by weight of polyamide whose monomer units comprise on average at least 8 C atoms is provided. Layer II) does not contain PA11 and/or PA12. The compressed-air brake line has high bursting strength even at elevated temperature, good low-temperature impact resistance, good ageing resistance, and can be produced at low cost.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 20, 2014
    Applicant: Evonik Industries AG
    Inventors: Michael Beyer, Klaus Gahlmann, Michael Boeer, Karl Kuhmann