Patents by Inventor Tanzeela Raja

Tanzeela Raja 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).

  • Method of preparing a polymer dispersion and polymer dispersions prepared thereby
    Patent number: 10640617
    Abstract: Disclosed herein is a method of preparing a polymer dispersion including combining a first solution with a second solution to provide an emulsion, and removing the first solvent from the emulsion to provide a dispersion including a plurality of polymer particles. The first solution includes a first solvent, a polyetherimide, a polycarbonate, or a combination of at least one of the foregoing, and optionally a nonionic surfactant. The second solution includes an aqueous solvent, and optionally a nonionic surfactant. The polymer particles have an average particle size (D50) of less than or equal to 20 micrometers. Also described are polyetherimide dispersions including a plurality of polyetherimide particles, wherein at least 90% of the particles have a particle size less than or equal to 14 micrometers, a nonionic surfactant, and an aqueous carrier.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: May 5, 2020
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Tanzeela Raja, Viswanathan Kalyanaraman, Liping Zheng
  • METHOD OF PREPARING A POLYMER DISPERSION AND POLYMER DISPERSIONS PREPARED THEREBY
    Publication number: 20180194903
    Abstract: Disclosed herein is a method of preparing a polymer dispersion including combining a first solution with a second solution to provide an emulsion, and removing the first solvent from the emulsion to provide a dispersion including a plurality of polymer particles. The first solution includes a first solvent, a polyetherimide, a polycarbonate, or a combination of at least one of the foregoing, and optionally a nonionic surfactant. The second solution includes an aqueous solvent, and optionally a nonionic surfactant. The polymer particles have an average particle size (D50) of less than or equal to 20 micrometers. Also described are polyetherimide dispersions including a plurality of polyetherimide particles, wherein at least 90% of the particles have a particle size less than or equal to 14 micrometers, a nonionic surfactant, and an aqueous carrier.
    Type: Application
    Filed: June 23, 2016
    Publication date: July 12, 2018
    Inventors: Tanzeela Raja, Viswanathan Kalyanaraman, Liping Zheng