Patents Assigned to Beadtech, Inc.
  • Process for preparing tritylated polystyrene resin
    Patent number: 6875822
    Abstract: The present invention relates to a process for preparing tritylated polystyrene resin. More particularly, the present invention is directed to a process for preparing tritylated polystyrene resins, comprising a step for tritylating polystyrene by reacting polystyrene resin with benzophenone dichloride or substituted benzophenone dichloride to introduce trityl group on the benzene moiety of the polystyrene.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: April 5, 2005
    Assignee: Beadtech, Inc.
    Inventors: Sun-Jong Ryoo, Tae-kyung Lee, Ju-Han Kim