Patents by Inventor Michael Kalchauer

Michael Kalchauer 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 and modular process for producing water-redispersible polymer powder compositions
    Patent number: 12060444
    Abstract: The invention relates to a method for producing polymer powder compositions which are redispersible in water and which are based on polymerisates of one or more ethylenically unsaturated monomers. In a first step, an aqueous polymerisate dispersion is produced by means of a radically initiated polymerization of one or more ethylenically unsaturated monomers in an aqueous medium, said polymerisate dispersion being convened into the polymer powder composition which is redispersible in water by means of a diving process. The invention is characterized in that the polymerization and the drying process are each carried out in a continuous manner, and the polymerization and the diving process are carried out in separate interconnected modules.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 13, 2024
    Assignee: WACKER CHEMIE AG
    Inventors: Bernhard Eckl, Michael Kalchauer, Jessica Seidel, Hans-Peter Weitzel
  • CONTINUOUS AND MODULAR PROCESS FOR PRODUCING WATER-REDISPERSIBLE POLYMER POWDER COMPOSITIONS
    Publication number: 20200270374
    Abstract: The invention relates to a method for producing polymer powder compositions which are redispersible in water and which are based on polymerisates of one or more ethylenically unsaturated monomers. In a first step, an aqueous polymerisate dispersion is produced by means of a radically initiated polymerization of one or more ethylenically unsaturated monomers in an aqueous medium, said polymerisate dispersion being convened into the polymer powder composition which is redispersible in water by means of a diving process. The invention is characterized in that the polymerization and the drying process are each carried out in a continuous manner, and the polymerization and the diving process are carried out in separate interconnected modules.
    Type: Application
    Filed: December 21, 2016
    Publication date: August 27, 2020
    Inventors: Bernhard Eckl, Michael Kalchauer, Jessica Seidel, Hans-Peter Weitzel