Patents by Inventor Michael Barron SIGMAN

Michael Barron SIGMAN 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).

  • Methods for stabilizing hydrous kaolin
    Patent number: 8664319
    Abstract: This invention is directed to a method of stabilizing high solid slurries, like kaolin slurries, the method comprises causticizing the sodium polycrylate or polyacrylic acid used in a dispersant blend to a pH of above 9. The method comprises a homogeneous dispersant blend of sodium carbonate, sodium polyacrylate, sodium silicate, and sodium hydroxide. This invention is also directed to a method of stabilizing high solid slurries, like kaolin slurries, by adding sodium polyacrylate at an acidic pH range or polyacrylic acid solution to the slurries: and adding a blend of soda ash and sodium silicate to the slurries.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: March 4, 2014
    Assignee: BASF Corporation
    Inventors: Michael Barron Sigman, Sharad Mathur, Kenneth W. Folmar, Timothy M. Young
  • METHODS FOR STABILIZING HYDROUS KAOLIN
    Publication number: 20100160526
    Abstract: This invention is directed to a method of stabilizing high solid slurries, like kaolin slurries, the method comprises causticizing the sodium polycrylate or polyacrylic acid used in a dispersant blend to a pH of above 9. The method comprises a homogeneous dispersant blend of sodium carbonate, sodium polyacrylate, sodium silicate, and sodium hydroxide. This invention is also directed to a method of stabilizing high solid slurries, like kaolin slurries, by adding sodium polyacrylate at an acidic pH range or polyacrylic acid solution to the slurries: and adding a blend of solid ash and sodium silicate to the slurries.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Inventors: Michael Barron SIGMAN, Sharad Mathur, Kenneth W. Folmar, Timothy M. Young