Patents by Inventor Modasser El-Shoulbary

Modasser El-Shoulbary 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).

  • Processes for preparing hydrophobic inorganic oxide pigments
    Patent number: 6620234
    Abstract: The present invention provides a treatment method for rendering inorganic oxide particles, such as TiO2 pigment, hydrophobic by predispersing a suitably reactive organohalosilane into an aqueous media, using intensive mixing means (such as a rotor stator emulsifier or inline static mixer) to form a reactive dispersion. When this dispersion is combined with inorganic oxide particles, such as TiO2 pigment, under sufficient agitation, a hydrophobic inorganic oxide can be formed. The oxides formed by the present invention have good mechanical properties, such as dispersibility in nonpolar substances (i.e., plastics), and they do not degrade physical properties of the pigmented nonpolar substance, such as lacing resistance of thermoplastics.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: September 16, 2003
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Robert J. Kostelnik, Leon Weber, Modasser El-Shoulbary