Patents by Inventor Bruce Matta

Bruce Matta 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 of preparing inorganic pigment dispersions
    Patent number: 6197879
    Abstract: A polymer useful as an inorganic pigment dispersant is provided. The polymer is derived from monomers consisting essentially of an ethylenically unsaturated aromatic monomer, an ethylenically unsaturated dicarboxylic acid monomer, and an ethylenically unsaturated monocarboxylic acid monomer. The total amount of said ethylenically unsaturated acid monomers is sufficient to permit said polymer to associate with an inorganic pigment in an aqueous medium in a manner which disperses said inorganic pigment in said aqueous medium to form a stable aqueous dispersion of said inorganic pigment, and the amount of said ethylenically unsaturated aromatic monomer is sufficient to reduce the water sensitivity of a dried coating of a latex paint comprised of said stable aqueous dispersion of said inorganic pigment. A process of preparing a polymer useful as an inorganic pigment dispersant and a method of preparing an inorganic pigment dispersion useful in the preparation of latex paints are also provided.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: March 6, 2001
    Assignee: Henkel Corporation
    Inventors: Stephen A. Fischer, Michael S. Wiggins, Bruce Matta, Eric Nowicki
  • Methods of preparing inorganic pigment dispersions
    Patent number: 5786436
    Abstract: A polymer useful as an inorganic pigment dispersant is provided. The polymer is derived from monomers consisting essentially of an ethylenically unsaturated aromatic monomer, an ethylenically unsaturated acid monomer, and an ethylenically unsaturated amide monomer. The amount of said ethylenically unsaturated acid monomer is sufficient to permit said polymer to associate with an inorganic pigment in an aqueous medium in a manner which disperses said inorganic pigment in said aqueous medium to form a stable aqueous dispersion of said inorganic pigment, and the amount of said ethylenically unsaturated aromatic monomer is sufficient to reduce the water sensitivity of a dried coating of a latex paint comprised of said stable aqueous dispersion of said inorganic pigment. A process of preparing a polymer useful as an inorganic pigment dispersant and a method of preparing an inorganic pigment dispersion useful in the preparation of latex paints are also provided.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: July 28, 1998
    Assignee: Henkel Corporation
    Inventors: Stephen A. Fischer, Michael S. Wiggins, Bruce Matta