Patents by Inventor Danping Ma

Danping Ma 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).

  • Poly(vinyl acetate) dispersion, and a paint formulation comprising thereof
    Patent number: 10167393
    Abstract: The present invention provides a polymer dispersion comprising by dry weight based on total dry weight of the polymer particles, a) from 60% to 95% a vinyl acetate monomer, b) from 0.2% to 2.5% a phosphorus-containing allylic monomer; and c) from 0.2% to 2.5% an itaconic acid monomer; wherein the total amount of monomers b) and c) is from 0.5% to 2.5% by dry weight based on total dry weight of the polymer particles, and the dry weight ratio of monomer b) to monomers b) and c) is from 0.2 to 0.6. The present invention further provides a paint formulation of PVC higher than 60% comprising the polymer dispersion.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: January 1, 2019
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Jianming Xu, Wei Cui, Qingwei Zhang, Ling Li, Danping Ma
  • A POLY(VINYL ACETATE) DISPERSION, AND A PAINT FORMULATION COMPRISING THEREOF
    Publication number: 20170145221
    Abstract: The present invention provides a polymer dispersion comprising by dry weight based on total dry weight of the polymer dispersion, a) from 60% to 95% a vinyl acetate monomer, b) from 0.2% to 2.5% a phosphorus-containing allylic monomer; and c) from 0.2% to 2.5% an itaconic acid monomer; wherein the total amount of monomers b) and c) is from 0.5% to 2.5% by dry weight based on total dry weight of the polymer dispersion, and the dry weight ratio of monomer b) to monomers b) and c) is from 0.2 to 0.6. The present invention further provides a paint formulation of PVC higher than 60% comprising the polymer dispersion.
    Type: Application
    Filed: July 28, 2014
    Publication date: May 25, 2017
    Inventors: Jianming Xu, Wei Cui, Qingwei Zhang, Ling Li, Danping Ma