Patents by Inventor Hans-Dieter Christian

Hans-Dieter Christian 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).

  • Matting agent for UV varnishes
    Patent number: 9624318
    Abstract: The invention relates to matted UV varnishes comprising silicon dioxide, the surface thereof having been modified by means of treatment with a multiple bond organopolysiloxane so as to be particularly well-suited for use as a matting material for UV varnishes, and to a method for producing same.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 18, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Klaus Benner, Hans-Dieter Christian, Gottlieb Lindner, Karl Meier
  • Surface-modified silicic acid semi-gels
    Patent number: 9139736
    Abstract: The invention relates to novel surface modified semi-gels, to a method for producing same, and to the use thereof.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: September 22, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Gottlieb Lindner, Hans-Dieter Christian
  • NOVEL MATTING AGENTS FOR UV OVERPRINT VARNISHES
    Publication number: 20130079433
    Abstract: The invention relates to matted UV overprint varnishes comprising silicon dioxides, the surface of which has been modified by means of treatment with an organopolysiloxane containing multiple bonds so as to be particularly well suited for use as matting agents for UV varnishes and printing inks. The invention also relates to a method for producing said varnishes.
    Type: Application
    Filed: April 28, 2011
    Publication date: March 28, 2013
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Gottlieb Lindner, Karl Meier, Christof Schilling, Hans Dieter Christian
  • NOVEL MATTING AGENT FOR UV VARNISHES
    Publication number: 20120202914
    Abstract: The invention relates to matted UV varnishes comprising silicon dioxide, the surface thereof having been modified by means of treatment with a multiple bond organopolysiloxane so as to be particularly well-suited for use as a matting material for UV varnishes, and to a method for producing same.
    Type: Application
    Filed: August 20, 2010
    Publication date: August 9, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Klaus Benner, Hans-Dieter Christian, Gottlieb Lindner, Karl Meier
  • SURFACE-MODIFIED SILICIC ACID SEMI-GELS
    Publication number: 20120156470
    Abstract: The invention relates to novel surface modified semi-gels, to a method for producing same, and to the use thereof.
    Type: Application
    Filed: August 20, 2010
    Publication date: June 21, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Gottlieb Lindner, Hans-Dieter Christian
  • Coating formulation having improved rheological properties
    Patent number: 8038787
    Abstract: The present invention relates to coating formulations comprising surface-modified silicon dioxides. The coating formulations are useful in applications such as architectural paints for buildings, windows and doors.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: October 18, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Köhler, Jürgen Meyer
  • Efficient matting agents based on precipitated silicas
    Patent number: 8012253
    Abstract: Precipitated silicas and wax-coated precipitated silicas, their preparation, and their use as matting agents in inks and paints, the precipitated silicas characterized by: BET 350-550 m2/g DBP number 320-400 g/100 g d50 5-15 ?m, and tamped density 20-90 g/l.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: September 6, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Schubert, Robert Kuhlmann, Hans Dieter Christian
  • Lacquer formulation for improving surface properties
    Patent number: 7842129
    Abstract: A coating formulation containing at least one surface-modified silicon dioxide having a 60° reflectometer value of <3 and a black number My of at least 140 has excellent performance properties, for example, a very good transparency.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: November 30, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Köhler, Uwe Schmeier, Jürgen Meyer
  • EFFICIENT MATTING AGENTS BASED ON PRECIPITATED SILICAS
    Publication number: 20100288164
    Abstract: Highly efficient matting agents based on precipitated silicas and wax-coated precipitated silicas, their preparation, and their use in inks and paints.
    Type: Application
    Filed: July 8, 2010
    Publication date: November 18, 2010
    Applicant: DEGUSSA AG
    Inventors: Juergen SCHUBERT, Robert Kuhlmann, Hans Dieter Christian
  • Surface-modified precipitated silicas
    Patent number: 7816442
    Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: October 19, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Hans-Dieter Christian, Juergen Schubert, Uwe Schmeier
  • Surface-modified silica gels
    Patent number: 7612137
    Abstract: The invention relates to surface-modified silica gels, to a process for preparing them, and to their use as matting agents in coating materials. As a result of the nature of the surface modification, the viscosity of 2-component coating materials is increased only slightly, or not at all, after the matting agent has been added.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: November 3, 2009
    Assignee: Degussa AG
    Inventors: Ulrich Brinkmann, Christian Götz, Hans-Dieter Christian
  • Surface-modified precipitated silicas
    Patent number: 7553889
    Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: June 30, 2009
    Assignee: Degussa AG
    Inventors: Hans-Dieter Christian, Jürgen Schubert, Uwe Schmeier
  • EFFICIENT MATTING AGENTS BASED ON PRECIPITATED SILICAS
    Publication number: 20090101866
    Abstract: Highly efficient matting agents based on precipitated silicas and wax-coated precipitated silicas, their preparation, and their use in inks and paints.
    Type: Application
    Filed: December 23, 2008
    Publication date: April 23, 2009
    Applicant: DEGUSSA AG
    Inventors: Juergen SCHUBERT, Robert Kuhlmann, Hans Dieter Christian
  • Efficient matting agents based on precipitated silicas
    Patent number: 7488382
    Abstract: A precipitated silica characterized by BET 350-550 m2/g DBP number 350-400 g/100 g d50 5-15 ?m, and tamped density 20 to less than 70 g/l.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: February 10, 2009
    Assignee: Degussa AG
    Inventors: Juergen Schubert, Robert Kuhlmann, Hans Dieter Christian
  • Surface-modified, aerogel-type structured silica
    Patent number: 7402293
    Abstract: A surface-modified, aerogel-type, structured silica is produced by spraying an aerogel-type, structured silica with a silanizing agent, post-mixing and conditioning. It can be used as a flatting agent.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: July 22, 2008
    Assignee: Degussa AG
    Inventors: Jürgen Meyer, Horst Zeizinger, Manfred Ettlinger, Hans-Dieter Christian
  • SURFACE-MODIFIED PRECIPITATED SILICAS
    Publication number: 20080139756
    Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.
    Type: Application
    Filed: November 13, 2007
    Publication date: June 12, 2008
    Applicant: DEGUSSA AG
    Inventors: Hans-Dieter Christian, Juergen Schubert, Uwe Schmeier
  • Structurally coated silica
    Patent number: 7303624
    Abstract: A structurally coated silica can be prepared by spraying and mixing a pyrogenic silica with water and a coating agent in a suitable mixing vessel, then milling and then conditioning the product. The structurally coated silica can be used as a matting agent in lacquers.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: December 4, 2007
    Assignee: DeGussa AG
    Inventors: Jürgen Meyer, Kurt Spitznagel, Hans-Dieter Christian
  • Texture-coated silica
    Patent number: 7285330
    Abstract: Texture-coated silica can be prepared by spraying a fumed silica with water and a coating agent, for example a thermoplastic elastomer, while mixing in a suitable mixing vessel, then milling and subsequently drying the mixture. The texture-coated silica can be used as a delustering agent in lacquers and for improving the soft feel.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: October 23, 2007
    Assignee: Degussa GmbH
    Inventors: Jürgen Meyer, Kurt Spitznagel, Hans-Dieter Christian
  • Surface-modified silica gels
    Publication number: 20050282934
    Abstract: The invention relates to surface-modified silica gels, to a process for preparing them, and to their use as matting agents in coating materials. As a result of the nature of the surface modification, the viscosity of 2-component coating materials is increased only slightly, or not at all, after the matting agent has been added.
    Type: Application
    Filed: May 19, 2005
    Publication date: December 22, 2005
    Applicant: Degussa AG
    Inventors: Ulrich Brinkmann, Christian Gotz, Hans-Dieter Christian
  • Coating formulation for improving surface properties
    Publication number: 20050282022
    Abstract: A coating formulation containing at least one surface-modified silicon dioxide having a 60° reflectometer value of<3 and a black number My of at least 140 has excellent performance properties, for example, a very good transparency.
    Type: Application
    Filed: June 13, 2005
    Publication date: December 22, 2005
    Applicant: Degussa AG
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Kohler, Uwe Schmeier, Jurgen Meyer