Patents by Inventor Eckhard Wenz

Eckhard Wenz 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: 10808086
    Abstract: The invention relates to a fibre composite (42) comprising at least one fibre layer (4, 14, 16) composed of a fibre material which is embedded in a matrix (8, 18) based on a thermoplastic, where the composition of the matrix (8, 18) contains: 60-95 parts by weight of aromatic polycarbonate and/or aromatic polyester carbonate and further additives. The invention further relates to the use of such a fibre composite for a component for a rail vehicle, in particular for a rail vehicle for transporting passengers.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: October 20, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Grimm, Vera Taschner, Eckhard Wenz, Thomas Höhnk
  • Publication number: 20190344497
    Abstract: A method for producing an object with layers of different materials in an additive manufacturing process comprises the following steps: I) providing a construction material heated at least in part to a temperature above its glass transition temperature on a substrate, so that a layer of the construction material is obtained which corresponds to a first selected cross section of the object; II) providing a construction material heated at least in part to a temperature above its glass transition temperature on a previously provided layer of the construction material, so that another layer of the construction material is obtained which corresponds to another selected cross section of the object and which is connected to the previously provided layer; repeating step II) until the object is formed.
    Type: Application
    Filed: December 22, 2017
    Publication date: November 14, 2019
    Inventors: Dirk Achten, Thomas BÜSGEN, Peter REICHERT, Nicolas DEGIORGIO, Rolf WEHRMANN, Helmut Werner HEUER, Eckhard WENZ
  • Patent number: 10392506
    Abstract: The invention relates to compositions consisting of A) 70 to 90 parts by weight of at least one polycarbonate, B) 10 to 30 parts by weight of at least one graft polymer containing a rubber-elastic particulate graft base, which contains diene, and containing a vinyl co(polymer) shell, C) 0 to 15 parts by weight of at least one additive, wherein the sum of the parts by weight of components A) and B) in the composition is normalized to 100. The invention further relates to the use of the compositions to produce components containing a plastic carrier and a multi-ply metal layer, and to molded bodies produced from the compositions.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: August 27, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Andreas Seidel, Wolfgang Schwartmann, Eckhard Wenz, Peter Weimar
  • Publication number: 20180215915
    Abstract: The invention relates to a composite component consisting of a plastic support and a multi-ply metal layer applied in a galvanizing operation, the plastic support being made of a thermoplastic composition consisting of A) 50 to 90 parts by weight of at least one aromatic polycarbonate, B) 10 to 50 parts by weight of at least one graft polymer comprising a diene-containing, rubber-elastic, particulate graft base and a vinyl (co)polymer shell, C) 0 to 15 parts by weight of at least one additive, where the sum of the parts by weight of components A) and B) in the composition is standardized to 100, (i) characterized in that the rubber content from component B in the composition is at least 6 wt %, (ii) characterized in that the ratio K/S of the weight fractions of butadiene-containing, rubber-elastic, particulate graft base from component B) in the composition (viz.
    Type: Application
    Filed: July 4, 2016
    Publication date: August 2, 2018
    Inventors: Andreas SEIDEL, Wolfgang SCHWARTMANN, Eckhard WENZ, Peter WEIMAR
  • Publication number: 20180194940
    Abstract: The invention relates to compositions consisting of A) 70 to 90 parts by weight of at least one polycarbonate, B) 10 to 30 parts by weight of at least one graft polymer containing a rubber-elastic particulate graft base, which contains diene, and containing a vinyl co(polymer) shell, C) 0 to 15 parts by weight of at least one additive, wherein the sum of the parts by weight of components A) and B) in the composition is normalized to 100, (i) characterized in that the rubber content from component B in the composition is at least 6 wt %, (ii) characterized in that the ratio K/S of the proportions by weight of rubber-elastic particulate graft base containing diene from component B) in the composition (?K) to the sum of free vinyl (co)polymer from component B), i.e., vinyl (co)polymer from component B) not covalently bonded to the rubber base in the graft polymer according to component B), and any free vinyl (co)polymer from component C) in the composition (?S) is at least 1.
    Type: Application
    Filed: July 4, 2016
    Publication date: July 12, 2018
    Inventors: ANDREAS SEIDEL, Wolfgang SCHWARTMANN, Eckhard WENZ, Peter WEIMAR
  • Patent number: 9976029
    Abstract: The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the extruded polymer, before being granulated, or the granulate, after being granulated, has been moistened by bringing the polymer in contact with liquid water in a water bath, a tube system filled with water, or a dipping tank, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 22, 2018
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Hans-Juergen Thiem, Ingmar Hermsdorfer, Birgit Mannel, Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers
  • Patent number: 9714324
    Abstract: The invention relates to a method for producing compositions containing vinyl-aromatic copolymers that are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by improved surface quality following storage in a warm-humid environment and are therefore suitable for producing molded articles having a class A surface that remains flawless over time.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: July 25, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Hans-Juergen Thiem, Ingmar Hermsdorfer, Birgit Mannel, Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers, Lars Frye, Hartwig Kempkes
  • Publication number: 20160257794
    Abstract: The invention relates to a fibre composite (42) comprising at least one fibre layer (4, 14, 16) composed of a fibre material which is embedded in a matrix (8, 18) based on a thermoplastic, where the composition of the matrix (8, 18) contains: 60-95 parts by weight of aromatic polycarbonate and/or aromatic polyester carbonate and further additives. The invention further relates to the use of such a fibre composite for a component for a rail vehicle, in particular for a rail vehicle for transporting passengers.
    Type: Application
    Filed: October 6, 2014
    Publication date: September 8, 2016
    Inventors: Thomas GRIMM, Vera TASCHNER, Eckhard WENZ, Thomas HÖHNK
  • Patent number: 9376561
    Abstract: Described herein are polymer compositions comprising at least one inorganic salt comprising a cation selected from the group consisting of alkali metals, alkaline earth metals and aluminum, and an anion selected from the group consisting of chloride, sulfate, nitrate, phosphate, acetate and formate, in a concentration of 100 to 5000 mg/kg, based on the composition, and wherein the salt is present in the composition exclusively in dissolved form or in the form of amorphous and/or crystalline inclusions having a size of not more than 60 ?m. Compositions of the present invention are distinguished by an improved surface after heat-moisture storage and are suitable in particular for the production of moldings with a high gloss finish that demand a class A surface, which have optionally been subjected, in whole or in part, to a further surface treatment step involving e.g. lacquering, in-mold decoration, or metallization by vacuum deposition or galvanization.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: June 28, 2016
    Assignee: BAYER MATERIALSCIENCE AG
    Inventors: Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers, Birgit Derfuss, Hans-Jurgen Thiem, Sven Hobeika, Ingmar Hermsdorfer
  • Patent number: 9238320
    Abstract: A composite and process for the production of a composite component, comprising a) a support of a thermoplastic composition, and b) at least one polyurethane layer in direct contact with the support.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: January 19, 2016
    Assignee: BAYER MATERIALSCIENCE AG
    Inventors: Andreas Seidel, Rainer Protte, Eckhard Wenz, Uli Franz, Philipp Moeller
  • Publication number: 20160009870
    Abstract: The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the granulates have been moistened by bringing same in contact with liquid water and have been stored in said water, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.
    Type: Application
    Filed: February 5, 2014
    Publication date: January 14, 2016
    Applicant: BAYER MATERIAL SCIENCE AG
    Inventors: Hans-Juergen THIEM, Ingmar HERMSDORFER, Birgit MANNEL, Andreas SEIDEL, Eckhard WENZ, Hans-Juergen KLANKERS, Udo BIRKENBEUL, Alfred SATZINGER
  • Publication number: 20150368463
    Abstract: The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the extruded polymer, before being granulated, or the granulate, after being granulated, has been moistened by bringing the polymer in contact with liquid water in a water bath, a tube system filled with water, or a dipping tank, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.
    Type: Application
    Filed: February 5, 2014
    Publication date: December 24, 2015
    Inventors: Hans-Juergen THIEM, Ingmar HERMSDORFER, Birgit MANNEL, Andreas SEIDEL, Eckhard WENZ, Hans-Juergen KLANKERS
  • Publication number: 20150361225
    Abstract: The invention relates to a method for producing compositions containing vinyl-aromatic copolymers that are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by improved surface quality following storage in a warm-humid environment and are therefore suitable for producing molded articles having a class A surface that remains flawless over time.
    Type: Application
    Filed: February 5, 2014
    Publication date: December 17, 2015
    Inventors: Hans-Juergen THIEM, Ingmar HERMSDORFER, Birgit MANNEL, Andreas SEIDEL, Eckhard WENZ, Hans-Juergen KLANKERS, Lars FRYE, Hartwig KEMPKES
  • Publication number: 20150258711
    Abstract: The invention relates to a continuous method for producing, by using microparticles, thermoplastics provided with reinforcement fibres. The production methods relate to such composite materials, which contain the reinforcement fibres in a parallel (or predominantly parallel) arrangement in the thermoplastic matrix.
    Type: Application
    Filed: September 18, 2013
    Publication date: September 17, 2015
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Ulrich Grosser, Klaus Horn, Thomas Grimm, Eckhard Wenz
  • Publication number: 20150259529
    Abstract: The present invention relates to polycarbonate compositions comprising: A) an aromatic polycarbonate and/or aromatic polyester carbonate; B) a graft polymer obtainable by co-precipitation of a mixture of at least two graft polymer dispersions B.1 and B.2, wherein the production of the graft polymer component B.1 takes place using at least one redox system as initiator and wherein the production of the graft polymer component B.2 takes place using at least one persulfate compound as initiator; C) optionally a vinyl (co)polymer and/or polyalkylene terephthalate; D) optionally a phosphorus-containing flame retardant; E) at least one phenolic antioxidant; F) optionally a neutral phosphorus- or sulfur-containing co-stabilisers (synergists); and G) optionally additives. Compositions of the present invention are distinguished by an optimum combination of good hydrolysis resistance and a light natural colour.
    Type: Application
    Filed: June 1, 2015
    Publication date: September 17, 2015
    Inventors: Evgueni AVTOMONOV, Andreas SEIDEL, Thomas ECKEL, Eckhard WENZ
  • Patent number: 8927621
    Abstract: The present invention relates to a process for the preparation of compositions comprising vinyl aromatic copolymers prepared by the emulsion polymerisation process and having salt inclusions resulting from their preparation, which compositions are distinguished by an improved surface quality after storage under warm moist conditions and in that respect are suitable for the production of molded bodies having a class A surface.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: January 6, 2015
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers
  • Patent number: 8901216
    Abstract: The present invention relates to impact-modified polyester/polycarbonate compositions containing: A) 41 to 80 parts by weight, in each case relative to the sum of the parts by weight of components A+B+C+D, of aromatic polycarbonate, B) 5 to 40 parts by weight, in each case relative to the sum of the parts by weight of components A+B+C+D, of polyester with a content of isophthalic acid building blocks, C) 1 to 15 parts by weight, in each case relative to the sum of the parts by weight of components A+B+C+D, of rubber-modified graft polymer, D) 0 to 25 parts by weight, in each case relative to the sum of the parts by weight of components A+B+C+D, of a flame retardant, E) 0 to 20 parts by weight, in each case relative to the sum of the parts by weight of components A+B+C+D=100, of vinyl (co)polymer, F) 0 to 50 parts by weight, in each case relative to the sum of the parts by weight of components A+B+C+D=100, of additives, wherein all the stated parts by weights in the present application are normalized such that
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: December 2, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Achim Feldermann, Eckhard Wenz
  • Publication number: 20140239532
    Abstract: A composite and process for the production of a composite component, comprising a) a support of a thermoplastic composition, and b) at least one polyurethane layer in direct contact with the support.
    Type: Application
    Filed: March 10, 2014
    Publication date: August 28, 2014
    Applicant: BAYER MATERIAL SCIENCE AG
    Inventors: ANDREAS SEIDEL, RAINER PROTTE, ECKHARD WENZ, ULI FRANZ, PHILIPP MOELLER
  • Patent number: 8779033
    Abstract: The invention relates to glass fiber reinforced polycarbonate compositions and molding compositions of the present investor and distinguished by high rigidity, high flowabillty, high processing stability, good chemical resistance and good aging resistance vis-à-vis the effects of light and heat compared with the prior art. The present invention also relates to the use of the compositions for the production of shaded articles and to shaped articles comprising the compositions according to the invention.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: July 15, 2014
    Assignee: Bayer Materialscience AG
    Inventors: Andreas Seidel, Michael Erkelenz, Eckhard Wenz
  • Patent number: 8779050
    Abstract: The present invention relates to non-aging, impact-modified polycarbonate compositions and molding compositions comprising: A) from 60 to 86 parts by weight (based on the sum of components A+B+C) of aromatic polycarbonate and/or aromatic polyester carbonate, B) from 4 to 12 parts by weight (based on the sum of components A+B+C) of graft polymer comprising: B.1 from 10 to 50 wt. % (based on the graft polymer B) of a shell of at least one vinyl monomer, and B.2 from 90 to 50 wt. % (based on the graft polymer B) of a graft base of silicone-acrylate composite rubber, C) from 10 to 30 parts by weight (based on the sum of components A+B+C) of a polymer or copolymer based on vinyl monomer, and D) from 0 to 20 parts by weight of polymer additives.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: July 15, 2014
    Assignee: Bayer Materialscience AG
    Inventors: Achim Feldermann, Andreas Seidel, Eckhard Wenz