Patents Assigned to SKW Trostberg Aktiengescellchaft
  • Redispersible polymer powders, method for their preparation and applications
    Patent number: 5895802
    Abstract: The invention concerns redispersible polymer powders characterized by a proportion of 3 to 30% by wt relative to the polymer weight of condensation products of amino-s-triazine/formaldehyde/sulfite with molar ratios of amino-s-triazine to formaldehyde to sulfite of 1/1.3-6.0/0.3-1.5 and with a low free formaldehyde content. These condensation products of amino-s-triazine/formaldehyde/sulfite are exceedingly effective protective colloids when spray-drying polymer dispersions and can be combined in problem-free manner with casein.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: April 20, 1999
    Assignee: SKW Trostberg Aktiengescellchaft
    Inventors: Josef Weichmann, Alfred Kern