Inorganic Alkaline Reactant Is Added In A Separate Step Patents (Class 516/48)
With added solid non-bituminous particulate (Class 516/49)
  • Sizing and rheology agents for gypsum stucco systems for water resistant panel production
    Patent number: 8932401
    Abstract: Emulsions, and processes for making the emulsions, useful for imparting water resistance to gypsum products are disclosed. Process for making the emulsion and gypsum products made from the emulsion are also disclosed. The emulsions of the invention include at least one paraffin wax and a hydrophilic metallic salt. The emulsions of the invention may further include a saponifiable wax substitute for montan wax. The emulsions of the invention may further include a biocide.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: January 13, 2015
    Assignee: Momentive Specialty Chemicals Inc.
    Inventors: Steven J. Wantling, Jason L. Holder, Harden Christopher Wren