Patents by Inventor Alexander K. Sorser

Alexander K. Sorser 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).

  • Aqueous pigment dispersions
    Patent number: 8211970
    Abstract: The invention relates to aqueous pigment dispersions comprising at least one dispersed pigment, an aqueous carrier and a copolymer prepared by polymerization of at least one macromonomer (1) having a terminal olefinic unsaturation with a mixture of olefinically unsaturated monomers (2), wherein the macromonomer (1) comprises 1a) 5-100% by weight of at least one polymerized acid functional unsaturated monomer, 1b) optionally at least one polymerized hydroxy functional unsaturated monomer, and optionally 1c) at least one further polymerized olefinically unsaturated monomer, and wherein the mixture of olefinically unsaturated monomers (2) comprises 2a) 5-80% by weight of at least one unsaturated vinyl aromatic monomer, 2b) 5-50% by weight of at least one vinyl monomer with at least one polar heterocyclic group with a 5 or 6 membered ring containing at least one ring nitrogen atom which is not connected to a hydrogen atom, and optionally 2c) other olefinically unsaturated monomers.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: July 3, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Jozef Theresia Huybrechts, Paul P. Bruylants, Alexander K. Sorser, Michael Koerner
  • Media mill process
    Patent number: 7789333
    Abstract: This invention relates to the preparation of particle dispersions in a media mill using plastic, substantially cubic media to effect particle size reduction and/or dispersion of the particles.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 7, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Howard Zakheim, Jiang Hong, Alexander K. Sorser
  • AQUEOUS PIGMENT DISPERSIONS
    Publication number: 20100036045
    Abstract: The invention relates to aqueous pigment dispersions comprising at least one dispersed pigment, an aqueous carrier and a copolymer prepared by polymerization of at least one macromonomer (1) having a terminal olefinic unsaturation with a mixture of olefinically unsaturated monomers (2), wherein the macromonomer (1) comprises 1a) 5-100% by weight of at least one polymerized acid functional unsaturated monomer, 1b) optionally at least one polymerized hydroxy functional unsaturated monomer, and optionally 1c) at least one further polymerized olefinically unsaturated monomer, and wherein the mixture of olefinically unsaturated monomers (2) comprises 2a) 5-80% by weight of at least one unsaturated vinyl aromatic monomer, 2b) 5-50% by weight of at least one vinyl monomer with at least one polar heterocyclic group with a 5 or 6 membered ring containing at least one ring nitrogen atom which is not connected to a hydrogen atom, and optionally 2c) other olefinically unsaturated monomers.
    Type: Application
    Filed: February 20, 2008
    Publication date: February 11, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Josef Theresia Huybrechts, Paul P. Bruylants, Alexander K. Sorser, Michael Koerner
  • Media mill process
    Publication number: 20030089277
    Abstract: This invention relates to the preparation of particle dispersions in a media mill using plastic, substantially cubic media to effect particle size reduction and/or dispersion of the particles.
    Type: Application
    Filed: October 29, 2002
    Publication date: May 15, 2003
    Inventors: Howard Zakheim, Jiang Hong, Alexander K. Sorser