Anhydrous Calcium Sulfate (e.g., Anhydrite, Etc.) Patents (Class 106/775)
Organic material or slag containing (Class 106/776)
Keene's cement (Class 106/777)
  • Self-levelling mortar mixture
    Patent number: 4931099
    Abstract: A self-levelling mortar mixture containing anhydrite, activator salts, plasticizers, surfactants and water is improved by providing the anhydrite in the form of both coarse-grained particles and finely ground particles.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: June 5, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Dobbers, Karl Reizlein, Kurt Bredtmann