Patents by Inventor Zengquan Qin

Zengquan Qin 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).

  • Polycarbonates made using highly selective catalysts
    Publication number: 20070255039
    Abstract: Poly(propylene carbonates) are prepared from propylene oxide and CO2 with less than 10% cyclic propylene carbonate by product using cobalt based catalysts of structure preferably in combination with salt cocatalyst, very preferably cocatalyst where the cation is PPN+ and the anion is Cl? or OBzF5?. Novel products include poly(propylene carbonates) having a stereoregularity greater than 90% and/or a regioregularity of greater than 90%.
    Type: Application
    Filed: June 15, 2007
    Publication date: November 1, 2007
    Applicant: Cornell Research Foundation, Inc.
    Inventors: Geoffrey Coates, Zengquan Qin, Claire Cohen
  • Polycarbonates made using highly selective catalysts
    Publication number: 20060089252
    Abstract: Poly(propylene carbonates) are prepared from propylene oxide and CO2 with less than 10% cyclic propylene carbonate by product using cobalt based catalysts of structure preferably in combination with salt cocatalyst, very preferably cocatalyst where the cation is PPN+ and the anion is Cl? or OBzF5?. Novel products include poly(propylene carbonates) having a stereoregularity greater than 90% and/or a regioregularity of greater than 90%.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 27, 2006
    Applicant: Cornell Research Foundation, Inc.
    Inventors: Geoffrey Coates, Zengquan Qin, Claire Cohen