Patents by Inventor Huiling Ding

Huiling Ding 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).

  • Urea phenyl derivatives and their use as polypropylene nucleating agents
    Patent number: 7572849
    Abstract: Disclosed herein are urea phenyl derivatives of the formula: wherein each R is an independently selected hydrocarbyl group and n is 2 or 3, and their use as nucleating agents for propylene polymers.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: August 11, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Jin-yun Wang, Huiling Ding, Roy Russell, Leigh C. Allen, Paul E. Stott, John Wefer, David J. Sikora
  • Direct alkylation of N-alkyl-N?-phenyl-p-phenylenediamine
    Patent number: 7361788
    Abstract: A single-step process is disclosed for the ring alkylation of at least one N-alkyl-N?-phenyl-phenylenediamine with at least one olefin wherein the process comprises heating a mixture of the N-alkyl-N?-phenyl-phenylenediamine(s) and olefin(s) in the presence of a catalytic amount of at least one alkyl aluminum halide at a temperature of from about 50 to about 350° C. in a sealed vessel for from about one to about 30 hours.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: April 22, 2008
    Assignee: Chemtura Corporation
    Inventors: Jin-Yun Wang, Huiling Ding, Joseph F. Stieber
  • Direct alkylation of N-alkyl-N'-phenyl-p-phenylenediamine
    Publication number: 20070173668
    Abstract: A single-step process is disclosed for the ring alkylation of at least one N-alkyl-N?-phenyl-phenylenediamine with at least one olefin wherein the process comprises heating a mixture of the N-alkyl-N?-phenyl-phenylenediamine(s) and olefin(s) in the presence of a catalytic amount of at least one alkyl aluminum halide at a temperature of from about 50 to about 350° C. in a sealed vessel for from about one to about 30 hours.
    Type: Application
    Filed: January 24, 2006
    Publication date: July 26, 2007
    Inventors: Jin-Yun Wang, Huiling Ding, Joseph Stieber
  • Urea phenyl derivatives and their use as polypropylene nucleating agents
    Publication number: 20070117890
    Abstract: Disclosed herein are urea phenyl derivatives of the formula: wherein each R is an independently selected hydrocarbyl group and n is 2 or 3, and their use as nucleating agents for propylene polymers.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 24, 2007
    Inventors: Qinggao Ma, William Wortman, Jin-yun Wang, Huiling Ding, Roy Russell, Leigh Allen, Paul Stott, John Wefer, David Sikora