Patents by Inventor Karen Casey

Karen Casey 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).

  • Processes for preparing impact modifier powders
    Patent number: 6900254
    Abstract: Processes for preparing a powdery high rubber impact modifier containing two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent is provided. Also provided are various methods of preparing aqueous polymer particle dispersions having two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent. These dispersions are spray-driable into a powder and are useful for increasing the impact strength of various matrix resins.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: May 31, 2005
    Assignee: Rohm and Haas Company
    Inventors: Morris Christopher Wills, Karen Casey, Chuen-Shyong Chou, Joseph Robert Adamo, Fanwen Zeng
  • High rubber impact modifier powders
    Patent number: 6639012
    Abstract: A powdery high rubber impact modifier composition containing two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent is provided. Aqueous polymer particle dispersions for preparing these high rubber impact modifiers which can be spray dried to a powder are also provided. Also provided are polymeric compositions having a matrix resin component and the powdery high-rubber impact modifiers.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: October 28, 2003
    Assignee: Rohm and Haas Company
    Inventors: Morris Christopher Wills, Chuen-Shyong Chou, Karen Casey, Joseph Robert Adamo, Fanwen Zeng
  • Processes for preparing impact modifier powders
    Publication number: 20020072552
    Abstract: Processes for preparing a powdery high rubber impact modifier containing two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent is provided. Also provided are various methods of preparing aqueous polymer particle dispersions having two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent. These dispersions are spray-driable into a powder and are useful for increasing the impact strength of various matrix resins.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 13, 2002
    Inventors: Morris Christopher Wills, Karen Casey, Chuen-Shyong Chou, Joseph Robert Adamo
  • High rubber impact modifier powders
    Publication number: 20020072566
    Abstract: A powdery high rubber impact modifier composition containing two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent is provided. Aqueous polymer particle dispersions for preparing these high rubber impact modifiers which can be spray dried to a powder are also provided. Also provided are polymeric compositions having a matrix resin component and the powdery high-rubber impact modifiers.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 13, 2002
    Inventors: Morris Christopher Wills, Chuen-Shyong Chou, Karen Casey, Joseph Robert Adamo, Fanwen Zeng