Patents by Inventor Jörg Büchner

Jörg Büchner 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: 20130143010
    Abstract: The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.
    Type: Application
    Filed: June 3, 2011
    Publication date: June 6, 2013
    Applicant: Bayer Intellectual Property GmbH Creative Campus Monheim
    Inventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Dirk Dijkstra
  • Publication number: 20120225302
    Abstract: The present invention relates to aqueous compositions based on crystalline or semicrystalline polyurethane polymers, processes for the preparation thereof and adhesive systems comprising these aqueous compositions and the use thereof.
    Type: Application
    Filed: October 25, 2010
    Publication date: September 6, 2012
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Jörg Büchner, Dirk Achten, Harald Kraus, Wolfgang Arndt
  • Publication number: 20120068572
    Abstract: The present invention relates to a method for producing an electromechanical, for example piezoelectric, transducer in which a first polymer layer comprising cutouts is applied to a first continuous polymer layer by means of a printing and/or coating method, a cover is applied to the first polymer layer comprising cutouts in such a way that the cutouts of the first polymer layer comprising cutouts are closed off with the formation of cavities, and the cover is connected to the first polymer layer comprising cutouts. The invention also relates to electromechanical transducers produced by the method according to the invention, and the use of said electromechanical transducers.
    Type: Application
    Filed: April 10, 2010
    Publication date: March 22, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Werner Jenninger, Joachim Wagner, Wolfgang Fischer, Jörg Büchner, Thomas Bernert, Andreas Nübler
  • Publication number: 20110274883
    Abstract: The invention relates to a security and/or valuable document (2) comprising electronic components (4) and/or diffractive security elements, comprising at least one protective layer (4, 5) being arranged on one side or two protective layers (4, 5) being arranged on both sides of the electronic components (4) and/or of the diffractive security element, said protective layers (4, 5) being formed of a first base polymer, comprising polymer layers (8, 9, 12, 13) being formed of a second base polymer being different from the first base polymer, into said polymer layers (8, 9, 12, 13) the electronic components (4) and/or the diffractive security element with the protective layers (4, 5) being laminated, adhesive layers (10, 11) with a latent-reactive adhesive being arranged at least between the polymer layers (8, 9, 12, 13) and the protective layers (6, 7).
    Type: Application
    Filed: July 20, 2009
    Publication date: November 10, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Reinhard Löwe, Per Krüger, Michael Knebel, Jens Ehreke, Heinz Pudleiner, Mehmet-Cengiz Yesildag, Klaus Meyer, Dirk Pophusen, Jörg Büchner
  • Publication number: 20110244228
    Abstract: The present invention relates to an aqueous polyurethane or polyurethane-urea dispersion comprising a polyurethane or a polyurethane polyurea dispersed therein, wherein the polyurethane or polyurethane polyurea comprises terminal carboxyl groups and lateral sulfonate and/or carboxylate groups.
    Type: Application
    Filed: October 31, 2009
    Publication date: October 6, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Harald Blum, Jörg Büchner, Wolfgang Henning
  • Publication number: 20100056702
    Abstract: Powder mixtures for powder coatings comprising: (A) a non-blocked, micronized, cycloaliphatic diisocyanate-derived polyisocyanate which is solid below 40° C. and liquid above 120° C. and has an average particle size d50 of below 10 ?m; (B) a pulverulent binder component having an average particle size d50 of below 100 ?m, comprising 25 to 75 wt. % of at least one amorphous polyol (B1) and 75 to 25 wt. % of at least one crystalline or semicrystalline polyol (B2); and, (C) optionally, one or more powder coating auxiliary substances and additives; processes for preparing such mixtures; powder coating obtained therefrom and substrates coated therewith.
    Type: Application
    Filed: August 25, 2009
    Publication date: March 4, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Michael Grahl, Hans-Josef Laas, Jörg Büchner
  • Publication number: 20090123757
    Abstract: The present invention relates to an identification document having layer A), B) and C), wherein A) is a thermoplastic, B) is a layer produced from a stable, latent-reactive adhesive, and C) is a thermoplastic.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 14, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Heinz Pudleiner, Joerg Buechner, Mehmet-Cengiz Yesildag, Klaus Meyer, Harald Kraus
  • Patent number: 7498380
    Abstract: Preparations of surface-deactivated solid isocyanates which are dispersed in finely particulate manner, with aqueous isocyanate-reactive polymer dispersions that include a) dispersed polymers having isocyanate-reactive groups, b) dispersed surface-deactivated oligomeric solid polyisocyanates, and c) at least one catalyst, where the catalyst or the totality of catalysts accelerates the reaction of the monomeric polyisocyanates which form by the thermal cleavage of the oligomeric polyisocyanates more strongly than the thermal cleavage itself. The preparations are prepared by mixing aqueous dispersions of at least one isocyanate-reactive polymer with at least one dispersed surface-deactivated oligomreric solid polyisocyanate and at least one catalyst. The preparations can be used in binders, films and powders for bonded joints, or coatings and to make a latently cross-linking adhesive layer. Substrates can be coated with layers obtainable with the above-described preparations.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: March 3, 2009
    Assignee: Bayer MaterialScience AG
    Inventors: Otto Ganster, Jörg Büchner, Heinz-Werner Lucas, Wolfgang Henning
  • Patent number: 6506280
    Abstract: The present invention relates to an aqueous dispersion containing an isocyanate-reactive polymer and a polyisocyanate, wherein the polyisocyanate has a melting or softening point of >30° C. and is in the form of a finely divided powder having a mean particle diameter of less than 100 &mgr;m. The present invention also relates to an adhesive composition containing this dispersion and to a process for bonding substrates with this composition.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: January 14, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto Ganster, Ralf Werner, Jörg Büchner, Wolfgang Henning
  • Patent number: 6191216
    Abstract: The invention relates to improved hydrophilic, polyurethane gel substances and foams, the use of polyurethane gel substances for pressure-distributing, in particular self-adhesive polyurethane-(foam) gels, and the use of said polyurethane gel substances for moulded structures and adhesive coatings.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: February 20, 2001
    Assignee: Bayer A.G.
    Inventors: Otto Ganster, Jörg Büchner, Jochen Werner Kenndoff, Günther Sachau