Patents by Inventor Dieter Langenfelder

Dieter Langenfelder 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: 20240131802
    Abstract: An extrusion-based additive manufacturing process including the step of selectively depositing a molten thermoplastic material (P) on a film or sheet made from or containing a polymer blend obtained by melt blending a mixture made from or containing: (A) 60% to 98.8% by weight of a polyolefin; (B) 0.1% to 30% by weight of a compatibilizer; (C) 0.05% to 20% by weight of an amino resin; and (D) 0% to 5% by weight of an additive, wherein the amounts of (A), (B), (C) and (D) are based on the total weight of (A)+(B)+(C)+(D).
    Type: Application
    Filed: January 26, 2022
    Publication date: April 25, 2024
    Applicants: Basell Polyolefine GmbH, Albert-Ludwigs-Universität Freiburg
    Inventors: Carl Gunther Schirmeister, Erik Hans Licht, Karsten Schmitz, Yannic Kessler, Klaus Klemm, Jürgen Rohrmann, Dieter Langenfelder, Mikhail Dureev, Rolf Muelhaupt, Mirco Müller, Steer Peter, Kolano Benjamin
  • Publication number: 20240051221
    Abstract: A process for producing articles with an extrusion-based additive manufacturing system using a consumable filament made from or containing a propylene polymer composition made from or containing: A) from 20% to 60% by weight of a heterophasic propylene copolymer; B) from 5% to 33% by weight of a propylene homopolymer or copolymer, wherein the copolymer contains up to 5% by weight of an alpha olefin; C) from 2% to 15% by weight of an elastomeric block copolymer made from or containing styrene; D) from 4% to 32% by weight of an elastomeric ethylene copolymer; E) from 5% to 50% by weight of a glass material as filler; and F) from 0.1% to 5% by weight of compatibilizer.
    Type: Application
    Filed: September 28, 2020
    Publication date: February 15, 2024
    Applicants: Basell Polyolefine GmbH, Albert-Ludwigs-Universität Freiburg
    Inventors: Carl Schirmeister, Karsten Schmitz, Yannic Kessler, Rainer Köhler, Erik Licht, Shahram Mihan, Jürgen Rohrmann, Dieter Langenfelder, Rolf Muelhaupt, Timo Hees
  • Publication number: 20220402196
    Abstract: A consumable filament and process for using the consumable filament in an extrusion-based additive manufacturing system made from or containing a heterophasic polypropylene composition having a xylene soluble content ranging from 15 wt % to 50 wt %, a melt flow rate MFR L ranging from 0.5 to 100 g/10 min, an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 1.5 to 6.0 dl/g, and an ethylene content ranging from 10 wt % to 50 wt %.
    Type: Application
    Filed: September 28, 2020
    Publication date: December 22, 2022
    Applicant: Basell Polyolefine GmbH
    Inventors: Dieter Langenfelder, Jürgen Rohrmann, Karsten Schmitz, Carl Schirmeister, Yannic Kessler, Erik Licht, Christoph Callsen, Volker Altstädt
  • Patent number: 10717856
    Abstract: The present invention relates to a new polypropylene composition for molded articles, such as finished parts for the automotive industry. A composition comprising: (A) from 40 to 85% by weight of a first propylene-based component being selected from propylene homopolymers, propylene copolymers and heterophasic propylene polymer, such first propylene-based component having a flexural modulus higher than 800 MPa; (B) from 5 to 20% by weight of a second propylene-based component being a heterophasic propylene polymer comprising: (B1) from 20 to 90% by weight of a crystalline polypropylene, and (B2) from 10 to 80% by weight of a copolymer of ethylene and at least one C3-C10 alpha-olefin, such copolymer containing from 10 to 70% by weight of ethylene, being soluble in xylene at room temperature, and having an intrinsic viscosity in tetrahydronaphtalene at 135° C. of higher than 3.5 dl/g; and (C) from 10 to 40% by weight of glass fibers.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: July 21, 2020
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Dieter Langenfelder, Jurgen Rohrmann
  • Publication number: 20170145200
    Abstract: The present invention relates to a new polypropylene composition for molded articles, such as finished parts for the automotive industry. A composition comprising: (A) from 40 to 85% by weight of a first propylene-based component being selected from propylene homopolymers, propylene copolymers and heterophasic propylene polymer, such first propylene-based component having a flexural modulus higher than 800 MPa; (B) from 5 to 20% by weight of a second propylene-based component being a heterophasic propylene polymer comprising: (B1) from 20 to 90% by weight of a crystalline polypropylene, and (B2) from 10 to 80% by weight of a copolymer of ethylene and at least one C3-C10 alpha-olefin, such copolymer containing from 10 to 70% by weight of ethylene, being soluble in xylene at room temperature, and having an intrinsic viscosity in tetrahydronaphtalene at 135° C. of higher than 3.5 dl/g; and (C) from 10 to 40% by weight of glass fibers.
    Type: Application
    Filed: February 6, 2017
    Publication date: May 25, 2017
    Applicant: Basell Poliolefine Italia S.r.l.
    Inventors: DIETER LANGENFELDER, Jurgen Rohrmann
  • Patent number: 9587079
    Abstract: The present invention relates to a new polypropylene composition for molded articles, such as finished parts for the automotive industry. A composition comprising: (A) from 40 to 85% by weight of a first propylene-based component being selected from propylene homopolymers, propylene copolymers and heterophasic propylene polymer, such first propylene-based component having a flexural modulus higher than 800 MPa; (B) from 5 to 20% by weight of a second propylene-based component being a heterophasic propylene polymer comprising: (B1) from 20 to 90% by weight of a crystalline polypropylene, and (B2) from 10 to 80% by weight of a copolymer of ethylene and at least one C3-C10 alpha-olefin, such copolymer containing from 10 to 70% by weight of ethylene, being soluble in xylene at room temperature, and having an intrinsic viscosity in tetrahydronaphtalene at 135° C. of higher than 3.5 dl/g; and (C) from 10 to 40% by weight of glass fibers.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: March 7, 2017
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Dieter Langenfelder, Jurgen Rohrmann
  • Publication number: 20150148437
    Abstract: The present invention relates to a new polypropylene composition for the production of foamed molded articles, such as finished parts for the automotive industry.
    Type: Application
    Filed: May 22, 2013
    Publication date: May 28, 2015
    Inventors: Dieter Langenfelder, Jürgen Rohrmann
  • Publication number: 20140371339
    Abstract: The present invention relates to a new polypropylene composition for molded articles, such as finished parts for the automotive industry. A composition comprising: (A) from 40 to 85% by weight of a first propylene-based component being selected from propylene homopolymers, propylene copolymers and heterophasic propylene polymer, such first propylene-based component having a flexural modulus higher than 800 MPa; (B) from 5 to 20% by weight of a second propylene-based component being a heterophasic propylene polymer comprising: (B1) from 20 to 90% by weight of a crystalline polypropylene, and (B2) from 10 to 80% by weight of a copolymer of ethylene and at least one C3-C10 alpha-olefin, such copolymer containing from 10 to 70% by weight of ethylene, being soluble in xylene at room temperature, and having an intrinsic viscosity in tetrahydronaphtalene at 135° C. of higher than 3.5 dl/g; and (C) from 10 to 40% by weight of glass fibers.
    Type: Application
    Filed: October 16, 2012
    Publication date: December 18, 2014
    Inventors: Dieter Langenfelder, Jurgen Rohrmann