The Nitrogen Containing Material Is Inorganic Patents (Class 530/222)
  • Elastomeric-modified phenolic rosin resins
    Patent number: 6153693
    Abstract: This invention relates to novel rosin-based resins and the process for preparing them. In particular, the invention relates to elastomeric-modified pigment binder compositions which exhibit properties that make them useful in formulating vehicles for lithographic printing inks and other coating applications.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: November 28, 2000
    Assignee: Westvaco Corporation
    Inventors: Michael D. Matzinger, G. Frederick Hutter
  • Process for preparing colorless rosin
    Patent number: 4906733
    Abstract: A process for preparing a colorless rosin comprising a step for purifying a disproportionated rosin and hydrogenating the rosin. According to the process, a rosin having a color nearly equal to colorless and is excellent in various properties such as odorless at heating and stability is prepared.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: March 6, 1990
    Assignee: Arakawa Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Kodama, Masao Maeda, Kiyoshi Kanagawa