Patents Assigned to Sakata INK Corp.
  • Treated pigment, use thereof, and compound for treating pigment
    Patent number: 7220306
    Abstract: The present invention provides a treated pigment produced by treating at least one pigment selected from the group consisting of organic pigments and carbon black each having a functional group reactive with a carbodiimide group with a carbodiimide compound having one or more carbodiimide groups, said carbodiimide compound having, within the molecule thereof, at least one side chain selected from the group consisting of polyester side chains, polyether side chains and polyacrylic side chains, with a carbodiimide equivalent of 100 to 50,000.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: May 22, 2007
    Assignee: Sakata INK Corp.
    Inventors: Masanori Kano, Kazunori Itoh, Naoyuki Kitaoka, Takaaki Yodo, Hideo Shibata