Patents by Inventor Andrew G. Batzell

Andrew G. Batzell 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).

  • Opacifying pigment particle
    Patent number: 8304485
    Abstract: A process for forming an opacifying pigment encapsulated in polymer including (a) dispersing a pigment particle having an average particle diameter of from 150 to 500 nm and an index of refraction of at least 1.8 such as, for example, TiO2 in a medium with from 0.1% to 10% by weight, based on the weight of said pigment particle, sulfur acid-functional first polymer whereby the zeta potential of the dispersed pigment particle is less than ?28 mV between pH 5 and pH 8; and (b) performing an emulsion polymerization in the presence of the dispersed pigment particle to provide from 10% to 200%, by weight, based on the weight of the pigment particle, second polymer that at least partially encapsulates the dispersed pigment particle. Also provided are the encapsulated pigment particle so formed and compositions including the encapsulated pigment particle.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 6, 2012
    Assignee: Rohm and Haas Company
    Inventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Martin Heuts
  • Opacifying pigment particle
    Patent number: 8283404
    Abstract: An opacifying pigment that includes a pigment particle having an average particle diameter of from 0.005 to 5 microns and an index of refraction of at least 1.8 such as, for example TiO2, at least partially encapsulated in polymer is provided. Also provided are processes for forming the encapsulated pigment particle and compositions including the encapsulated pigment particle.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 9, 2012
    Assignee: Rohm and Haas Company
    Inventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Karl A. Bromm
  • Opacifying pigment particle
    Publication number: 20100298484
    Abstract: A process for forming an opacifying pigment encapsulated in polymer including (a) dispersing a pigment particle having an average particle diameter of from 150 to 500 nm and an index of refraction of at least 1.8 such as, for example, TiO2 in a medium with from 0.1% to 10% by weight, based on the weight of said pigment particle, sulfur acid-functional first polymer whereby the zeta potential of the dispersed pigment particle is less than ?28 mV between pH 5 and pH 8; and (b) performing an emulsion polymerization in the presence of the dispersed pigment particle to provide from 10% to 200%, by weight, based on the weight of the pigment particle, second polymer that at least partially encapsulates the dispersed pigment particle. Also provided are the encapsulated pigment particle so formed and compositions including the encapsulated pigment particle.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Inventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Martin Heuts
  • Opacifying pigment particle
    Publication number: 20100298483
    Abstract: An opacifying pigment that includes a pigment particle having an average particle diameter of from 0.005 to 5 microns and an index of refraction of at least 1.8 such as, for example TiO2, at least partially encapsulated in polymer is provided. Also provided are processes for forming the encapsulated pigment particle and compositions including the encapsulated pigment particle.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Inventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Karl A. Bromm