Patents by Inventor Gerd Loehden

Gerd Loehden 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).

  • Cells and method for producing acetone
    Patent number: 9453210
    Abstract: The invention relates to cells and a method for producing acetone.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: September 27, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Franz Ulrich Becker, Gerda Grund, Matthias Orschel, Kai Doderer, Gerd Loehden, Gerd Brand, Peter Duerre, Simone Thum, Hubert Johannes Bahl, Ralf-Joerg Fischer, Antje May
  • Adhesive agents for plastisols
    Patent number: 8936853
    Abstract: The invention relates to plastisols which even without the addition of adhesion promoters exhibit high adhesion to metallic and cathodically deposition-coated substrates.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: January 20, 2015
    Assignee: Kaneka Belgium N.V.
    Inventors: Jan Hendrik Schattka, Gerd Loehden, Marita Kaufmann, Winfried Belzner, Michael Wolff, Rainer Lomoelder, Dirk Hoppe, Christoph Nacke
  • Low water-absorption plastisol polymers
    Patent number: 8933169
    Abstract: The invention relates to pulverulent core/shell polymers for the preparation of a plastisol, which have surprisingly low water absorption. The invention further relates to the plastisol pastes which are prepared from these polymers and likewise have low water absorption and additionally possess good storage stability, good mechanical properties and good plasticizer compatibility. The core/shell polymers consist of latex particles having a primary particle size of at least 250 nm, the core consisting of methyl methacrylate, (meth)acrylic esters with C2 to C8 or aromatic alcohol radicals and optionally further monomers, and the shells(s) comprising, in addition to these components, also amides of (meth)acrylic acid and/or amine-substituted alkyl esters of (meth)acrylic acid.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: January 13, 2015
    Assignee: Kaneka Belguim N.V.
    Inventors: Jan Hendrik Schattka, Gerd Loehden
  • Maleic anhydride copolymers as soluble support material for fused deposition modelling (FDM) printer
    Patent number: 8822590
    Abstract: The invention relates to a novel support material for the fused deposition modelling process for producing three-dimensional objects. The invention relates more particularly to a 3D printing process involving support materials which are easier to remove than in the prior art. The support materials according to the invention are styrene-maleic anhydride copolymers for example.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: September 2, 2014
    Assignee: Evonik Röhm GmbH
    Inventors: Florian Hermes, Stefan Bernhardt, Dirk Poppe, Guenter Schmitt, Markus Pridoehl, Gerd Loehden
  • MALEIC ANHYDRIDE COPOLYMERS AS SOLUBLE SUPPORT MATERIAL FOR FUSED DEPOSITION MODELLING (FDM) PRINTER
    Publication number: 20130317164
    Abstract: The invention relates to a novel support material for the fused deposition modelling process for producing three-dimensional objects. The invention relates more particularly to a 3D printing process involving support materials which are easier to remove than in the prior art. The support materials according to the invention are styrene-maleic anhydride copolymers for example.
    Type: Application
    Filed: March 13, 2012
    Publication date: November 28, 2013
    Applicant: Evonik Roehm GmbH
    Inventors: Florian Hermes, Stefan Bernhardt, Dirk Poppe, Guenter Schmitt, Markus Pridoehl, Gerd Loehden
  • Method for producing silyl-functionalized ABA triblock copolymers on the basis of (meth)acrylate
    Patent number: 8431652
    Abstract: The invention relates to a process for preparing (meth)acrylate-based ABA triblock copolymers with a silyl functionalization of the A blocks.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: April 30, 2013
    Assignees: Henkel AG & Co. KGaA, Evonik Rohm GmbH
    Inventors: Sven Balk, Gerd Loehden, Holger Kautz, Christine Troemer, Monika Maerz, Lars Zander, Jens Lueckert, Johann Klein, Thomas Moeller
  • Adhesives based on polyester-graft-poly(meth)acrylate copolymers
    Patent number: 8383728
    Abstract: The present invention relates to the use of mixtures comprising polymer types A, B and AB as or in adhesives, polymer type A being a copolyester prepared with cocondensation of unsaturated aliphatic dicarboxylic acids, polymer type B being a (meth)acrylate homopolymer and/or copolymer, and polymer type AB being a graft copolymer of polymer type A and polymer type B.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: February 26, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Gabriele Brenner, Rene Koschabek, Sven Balk, Thorsten Brand, Gerd Loehden
  • Use of polymeric microparticles in building material mixtures
    Patent number: 8177904
    Abstract: The use of polymeric microparticles having a cavity in hydraulically setting building material mixtures is described, from 1 to 100% by volume of the cavity of these microparticles being filled with water. In this way, remarkable concrete resistance to the freezing and thawing cycle is achieved, these microparticles providing improved protection for the concrete from the effects of the freezing and thawing cycle, even at a diameter of from 0.1 to 1 ?m and in doses which are 1 to 2 orders of magnitude lower than those described in the prior art. Moreover, the compressive strength of the correspondingly hardened concrete is substantially improved, which was likewise not foreseeable.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: May 15, 2012
    Assignees: Construction Research & Technology GmbH, Evonik Rohm GmbH
    Inventors: Lars Einfeldt, Gerhard Albrecht, Gerd Löhden, Holger Kautz
  • NANOSCALE SUPERPARAMAGNETIC POLY(METH)ACRYLATE POLYMERS
    Publication number: 20120111499
    Abstract: The invention relates to hybrid materials comprising polymers which envelop nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders, to a process for producing these materials and to their use.
    Type: Application
    Filed: January 17, 2012
    Publication date: May 10, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Sebastian ROOS, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
  • CELLS AND METHOD FOR PRODUCING ACETONE
    Publication number: 20120101304
    Abstract: The invention relates to cells and a method for producing acetone.
    Type: Application
    Filed: February 23, 2010
    Publication date: April 26, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Franz Ulrich Becker, Gerda Grund, Matthias Orschel, Kai Doderer, Gerd Löhden, Gerd Brand, Peter Dürre, Simone Thum, Hubert Johannes Bahl, Ralf-Jörg Fischer, Antje May
  • Process for preparing acid-terminated ATRP products
    Patent number: 8143354
    Abstract: The present invention relates to the in situ acid end group functionalization of polymer chains which have been prepared by means of atom transfer radical polymerization, and to the simultaneous removal of transition metals from polymer solutions.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: March 27, 2012
    Assignee: Evonik Röhm GmbH
    Inventors: Sven Balk, Gerd Loehden, Christine Miess, Christine Troemer, Monika Maerz
  • Method for the production of (meth) acrylate-based ABA triblock copolymers
    Patent number: 8106129
    Abstract: The invention relates to a method for producing meth)acrylate-based ABA triblock copolymers in which the A blocks are amine-functionalized.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: January 31, 2012
    Assignee: Evonik Röhm GmbH
    Inventors: Sven Balk, Gerd Loehden, Christine Miess, Christine Troemer, Monika Maerz
  • Heat-sealing material for aluminum foils and polyethylene terephthalate foils against polypropyl, polyvinyl chloride, and polystyrol containers
    Patent number: 8084136
    Abstract: The invention relates to a heat-sealable coating system suitable for the sealing of various types of substrate and comprising a film-forming dispersion, characterized in that a polymer type A is present and is a polyester or a polyester mixture, a polymer type B is present and is a (meth)acrylate homo- or/and copolymer, containing standard methacrylates and/or standard acrylates, and a polymer type AB is present and is a graft copolymer composed of polymer type A and polymer type B, and if appropriate a polymer type C is present and is an olefin polymer or is an olefin copolymer, and a polymer type CB is present and is a graft polymer composed of polymer type C and polymer type B, and also if appropriate a polymer type D and/or a polymer type DA is present.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: December 27, 2011
    Assignee: Evonik Röhm GmbH
    Inventors: Gerd Loehden, Sven Balk, Marita Kaufmann, Axel Schroeder, Thorsten Brand, Gabriele Brenner
  • Polysiloxane block copolymers
    Patent number: 8076440
    Abstract: The invention relates to polysiloxane block copolymers of the formula A[LB(S)Q]m, where A is a polysiloxane block, L is a divalent organic linker, B is a polymer block composed of radically polymerizable monomers, S is a sulfur atom and Q is a monovalent organic radical and m is an integer from 1 to 50, to a method for their production, and to their use in cosmetics or personal care.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: December 13, 2011
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Dirk Kuppert, Burghard Grüning, Brian Yang, Sven Balk, Gerd Löhden
  • Synthesis of polyester-graft-poly(meth)acrylate copolymers
    Patent number: 8053522
    Abstract: The present invention relates to a novel synthesis of (meth)acrylate-grafted polyesters and their action as compatibilizers.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: November 8, 2011
    Assignee: Evonik Roehm GmbH
    Inventors: Gerd Loehden, Sven Balk, Thorsten Brand, Gabriele Brenner, Thomas Arnold, Cornelia Baumann
  • METHOD FOR PRODUCING TELECHELICS HAVING A WIDE MOLECULAR WEIGHT DISTRIBUTION
    Publication number: 20110269913
    Abstract: The invention relates to a controlled polymerization method for producing telechelics on the basis of (meth)acrylate, which have a wide, monomodal molecular weight distribution, and to the use thereof as binders in glues or sealing materials.
    Type: Application
    Filed: October 6, 2009
    Publication date: November 3, 2011
    Applicants: Henkel Ag & Co. KGAA, EVONIK ROEHM GMBH
    Inventors: Sven Balk, Holger Kautz, Gerd Loehden, Lars Zander, Jens Lueckert, Johann Klein, Thomas Moeller, Volker Erb
  • Additive building material mixtures containing different-sized microparticles
    Patent number: 8039521
    Abstract: The present invention relates to the use of different-sized polymeric microparticles in hydraulically setting building material mixtures for the purpose of enhancing their frost resistance and cyclical freeze/thaw durability.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: October 18, 2011
    Assignee: Evonik Roehm GmbH
    Inventors: Jan Hendrik Schattka, Holger Kautz, Gerd Loehden
  • Method for preparation of penta-block copolymers with oh-functionalized blocks based on (meth)acrylate
    Patent number: 8034879
    Abstract: The invention relates to a process for preparing CABAC or ACBCA pentablock copolymers based on (meth)acrylate with an OH functionalization of the A blocks.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: October 11, 2011
    Assignees: Evonik Roehm GmbH, Henkel AG&Co. HGAA
    Inventors: Sven Balk, Gerd Loehden, Holger Kautz, Volker Erb, Uwe Franken, Georg Kinzelmann, Thomas Moeller
  • Method of bonding materials of construction using nanoscale, superparamagnetic poly(meth)acrylate polymers
    Patent number: 8025756
    Abstract: The invention relates to a method of bonding different materials of construction using hybrid materials comprising nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders enveloped or in part not enveloped by poly(meth)acrylates, and to their use.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: September 27, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Sebastian Roos, Gerd Loehden, Jan Hendrik Schattka, Manfred Braum, Markus Pridoehl, Guido Zimmermann, Andreas Huether
  • Heat-sealing compound for sealing aluminium foil and polyethylene terephthalate film to polypropylene, polyvinyl chloride and polystyrene containers
    Patent number: 8025758
    Abstract: The invention relates to a heat-sealing system consisting of an olefin polymer or olefin copolymer A, a methacrylate copolymer B, a graft polymer AB that is composed of the aforementioned components, a polyester C and an optional polymer D or an optional polymer blend DA, in addition to a solvent or solvent mixture L. The heat-sealing system is characterised by a high heat resistance, excellent barrier properties and short sealing times in relation to various plastics and aluminium foil or PET film.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: September 27, 2011
    Assignee: Evonik Rohm GmbH
    Inventors: Gerd Loehden, Sven Balk, Manfred Braum, Juergen Hartmann, Marita Kaufmann, Michael Wicke