Patents by Inventor Hans Etling

Hans Etling 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).

  • Continuous method for producing amino- and/or phenoplasts
    Patent number: 6500371
    Abstract: The invention relates to a continuous process for preparing aminoplastics and/or phenolics, in which a precondensate solution is prepared in a first extruder (14), the precondensate solution is continuously fed, with addition of additives, to a second extruder (20) with partial filling in the feed section (E) and devolatilization section (G), devolatilized in the second extruder (20) and then formed to give a molding composition or an end product. The process is particularly suitable for preparing melamine resins, in particular melamine-formaldehyde resins, as well as for preparing urea-formaldehyde resins.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: December 31, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Berbner, Hans Etling, Erhard Guenther, Tilman Sirch, Hans Dieter Zettler
  • Heat-curable, aqueous synthetic resin mixtures for coating woodworking materials
    Patent number: 5330846
    Abstract: Heat-curable, aqueous synthetic resin mixtures for coating woodworking materials, based on etherified melamine/formaldehyde condensates and aqueous synthetic resin dispersions, a process for the preparation of these mixtures and their use for coating woodworking materials.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: July 19, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Eisele, Hans Etling, Walter Pfalzgraf, Walter Pitteroff, Otto Wittmann