Patents by Inventor Burkhard Kressdorf

Burkhard Kressdorf 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).

  • Cellulose ether composition for the extrusion of mineral shaped bodies and also a process for the extrusion of mineral shaped bodies using this cellulose ether composition
    Patent number: 7491755
    Abstract: A description is given of a cellulose ether composition as additive for the extrusion of mineral masses which comprises 70 to 99.9% by weight of cellulose ether and 0.1 to 30% by weight of superabsorbent polymer, as well as a process for the extrusion of mineral masses using these compositions as additive.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: February 17, 2009
    Inventors: Roland Bayer, Frank Höhl, Hartwig Schlesiger, Arne Henning Kull, Jörn Pannek, Jürgen Engelhardt, Burkhard Kressdorf
  • Process for cement extrusion that makes use of crosslinked cellulose additives
    Patent number: 7041168
    Abstract: A method of preparing construction material systems is described. The process includes extruding a composition of construction materials and an irreversibly crosslinked cellulose derivative that is prepared by a particular process.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: May 9, 2006
    Assignee: Wolff Cellulosics GmbH & Co.,
    Inventors: Hartwig Schlesiger, Roland Bayer, Frank Höhl, Arne Henning Kull, Jürgen Engelhardt, Burkhard Kressdorf, Jörn-Bernd Pannek
  • Cellulose ether composition for the extrusion of mineral shaped bodies and also a process for the extrusion of mineral shaped bodies using this cellulose ether composition
    Publication number: 20050080167
    Abstract: A description is given of a cellulose ether composition as additive for the extrusion of mineral masses which comprises 70 to 99.9% by weight of cellulose ether and 0.1 to 30% by weight of superabsorbent polymer, as well as a process for the extrusion of mineral masses using these compositions as additive.
    Type: Application
    Filed: August 9, 2004
    Publication date: April 14, 2005
    Inventors: Roland Bayer, Frank Hohl, Hartwig Schlesiger, Arne Kull, Jorn Pannek, Jurgen Engelhardt, Burkhard Kressdorf
  • Additives containing cellulose derivatives having gel-like rheological properties, use thereof in construction material systems and also a process for cement extrusion using these additives
    Publication number: 20050034636
    Abstract: A description is given of additives for the extrusion of construction material systems, characterized in that the additives comprise irreversibly crosslinked cellulose ethers having gel-like rheological properties, and the use of irreversibly crosslinked cellulose derivatives as additives for the extrusion of construction material systems and also of an extrusion process for construction material systems.
    Type: Application
    Filed: August 9, 2004
    Publication date: February 17, 2005
    Inventors: Hartwig Schlesiger, Roland Bayer, Frank Hohl, Arne Kull, Jurgen Engelhardt, Burkhard Kressdorf, Jorn-Bernd Pannek
  • Polymerizable, highly crosslinking lacquer binders and their use for the production of lacquers
    Patent number: 5510453
    Abstract: The invention relates to novel branched polyesters containing allyl groups, which polyesters are water-emulsifiable, and their use as raw materials for lacquers.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: April 23, 1996
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventors: Burkhard Kressdorf, Erhard Luhmann, Wolfgang Dannhorn, Lutz Hoppe
  • Free-flowing, quick-dissolving lacquer binder granules
    Patent number: 5484826
    Abstract: The invention relates to free-flowing, quick-dissolving lacquer binder granules based on cellulose esters, more particularly cellulose nitrates, and to a process for their production.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: January 16, 1996
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventors: Burkhard Kressdorf, Erhard Luhmann, Lutz Hoppe
  • Reactive water-emulsifiable binders and their use for the production of lacquers
    Patent number: 5459196
    Abstract: This invention relates to new water-emulsifiable polyester resins, a process for their production and their use as a lacquer row material. These lacquer binders are produced by the reaction of at least one prepolymer A which contains (meth)acryloyl groups and at least one unsaturated water-emulsifiable polyester B with at least one polyisocynate C.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: October 17, 1995
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventors: Burkhard Kressdorf, Wolfgang Dannhorn, Erhard Luhmann, Lutz Hoppe
  • Coating composition and its use
    Patent number: 5362313
    Abstract: This invention relates to a new solid lacquer binder comprising gelatinized nitrocellulose, useful for the preparation of blocking-resistant coating compositions comprising epoxidized natural fatty acids of epoxidized triglycerides.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: November 8, 1994
    Assignee: Wolff Walsrode AG
    Inventors: Lutz Hoppe, Burkhard Kressdorf, Erhard Luhmann, Reinhard Nader
  • Coating system for materials which swell in water
    Patent number: 5352730
    Abstract: The present invention relates to a coating compound for sheets, films, or molded products composed of modified or unmodified polysaccharides.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: October 4, 1994
    Assignee: Wolff Walstrode AG
    Inventors: Erhard Luhmann, Burkhard Kressdorf, Lutz Hoppe, Klaus Szablikowski, Gunter Weber, Sebastian Meyer-Stork
  • Binders containing ethylenically unsaturated groups and their use for the production of paints
    Patent number: 5274067
    Abstract: Unsaturated polyester polyurethanes based on an allyl-ether-modified polyester A and a polyisocyanate B are suitable for paints having improved hardness and appearance.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: December 28, 1993
    Assignee: Wolff Walsrode AG
    Inventors: Burkhard Kressdorf, Erhard Luhmann, Lutz Hoppe, Wolfgang Koch, Klaus Szablikowski
  • Water-soluble polymerizable polyesters
    Patent number: 5102976
    Abstract: Improved .alpha.,.beta.-unsaturated polyesters for paint applications are based on an unsaturated polycarboxylic acid, a polyalkylene glycol having an average molecular weight of 300 to 1,000 and an alkoxylated triol containing no unsaturated groups.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: April 7, 1992
    Assignee: Wolff Walsrode AG
    Inventors: Burkhard Kressdorf, Erhard Luhmann, Lutz Hoppe