Patents by Inventor Martin Schlummer

Martin Schlummer 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: 10934410
    Abstract: Disclosed is a method for recycling polyolefin containing waste by using a solvent with a specific Hansen parameter and contacting this mixture with a liquid filtration aid before separating the polyolefin from the mixture. The method includes the steps of mixing the polyolefin containing waste with a solvent having a Hansen parameter ?H from 0.0 to 3.0 MPa1/2; contacting this mixture with a liquid filtration aid having a Hansen parameter ?H>4.0 MPa1/2; and separating the polyolefin from the mixture.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: March 2, 2021
    Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.
    Inventors: Andreas Mäurer, Martin Schlummer, Fabian Knappich, Tanja Fell, Arthur Berrang
  • Publication number: 20190233609
    Abstract: The invention refers to a method for recycling polyolefin containing waste by using a solvent with a specific Hansen parameter and contacting this mixture with a liquid filtration aid before separating the polyolefm from the mixture. The method comprises the following steps: Mixing the polyolefm containing waste with a solvent having a Hansen parameter ?H from 0.0 to 3.0 M Pa1/2; Contacting this mixture with a liquid filtration aid having a Hansen parameter ?H>4.0 M Pa1/2; and Separating the polyolefin from the mixture.
    Type: Application
    Filed: September 13, 2017
    Publication date: August 1, 2019
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Andreas MÄURER, Martin SCHLUMMER, Fabian KNAPPICH, Tanja FELL, Arthur BERRANG
  • Patent number: 8225937
    Abstract: Disclosed is a method for separating differently additivated polymers based on polystyrene, the copolymers and/or blends thereof. This method is used in particular when recycling flame-retardant plastic materials, in particular from old electrical appliances. The method is characterised by a density separation with at least one liquid or gaseous separation medium.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: July 24, 2012
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung, e.V.
    Inventors: Martin Schlummer, Andreas Mäurer
  • Patent number: 8138232
    Abstract: The invention relates to a method for recycling plastic materials which contain at least two polymers, copolymers or blends thereof based on polystyrene. The plastic material is thereby mixed with a solvent for the polymers, copolymers or blends. Subsequently a precipitation is effected by addition of a corresponding precipitant so that then the gelatinous precipitation product can be separated from the further components of the plastic material. The method is used for recycling of any plastic materials, in particular of plastic materials from electronic scrap processing and from shredder light fractions.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: March 20, 2012
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Andreas Maeurer, Martin Schlummer, Otto Beck
  • Publication number: 20080281002
    Abstract: The invention relates to a method for recycling plastic materials which contain at least two polymers, copolymers or blends thereof based on polystyrene. The plastic material is thereby mixed with a solvent for the polymers, copolymers or blends. Subsequently a precipitation is effected by addition of a corresponding precipitant so that then the gelatinous precipitation product can be separated from the further components of the plastic material. The method is used for recycling of any plastic materials, in particular of plastic materials from electronic scrap processing and from shredder light fractions.
    Type: Application
    Filed: June 8, 2006
    Publication date: November 13, 2008
    Inventors: Andreas Maeurer, Martin Schlummer, Otto Beck
  • Publication number: 20080190819
    Abstract: The invention relates to a method for separating differently additivated polymers based on polystyrene, the copolymers and/or blends thereof. This method is used in particular when recycling flame-retardant plastic materials, in particular from old electrical appliances. The method according to the invention is characterised by a density separation with at least one liquid or gaseous separation medium.
    Type: Application
    Filed: June 8, 2006
    Publication date: August 14, 2008
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forshung e.V.
    Inventors: Martin Schlummer, Andreas Maurer
  • Publication number: 20040229965
    Abstract: The invention relates to a method for separating target polymers and their additives from a material containing polymers, as a result of which the recovery both of the target polymers and of the additives is made possible. Based on the principle of a selective precipitation, the target polymer is precipitated and subsequently separated from the additives present in solution and dissolved foreign polymers. The separation of the additives from the solution is effected in a further step.
    Type: Application
    Filed: February 25, 2004
    Publication date: November 18, 2004
    Inventors: Andreas Maurer, Gerd Wolz, Martin Schlummer, Thomas Luck, Udo Knauf, Rolf Kippenhahn
  • Publication number: 20030191202
    Abstract: The invention relates to a method for separating target polymers and their additives from a material containing polymers, as a result of which the recovery both of the target polymers and of the additives is made possible. Based on the principle of a selective precipitation, the target polymer is precipitated and subsequently separated from the additives present in solution and dissolved foreign polymers. The separation of the additives from the solution is effected in a further step.
    Type: Application
    Filed: May 22, 2003
    Publication date: October 9, 2003
    Inventors: Andreas Maurer, Gerd Wolz, Martin Schlummer, Thomas Luck, Udo Knauf, Rolf Kippenhahn