Patents by Inventor Ryoji Kaji

Ryoji Kaji 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).

  • Process for preparing aqueous dispersion of rosin-base materials
    Patent number: 4404034
    Abstract: This invention provides a process for preparing an aqueous dispersion of a rosin-base material by an inversion method, the process being characterized in that the dispersant is at least one of compounds represented by the formula ##STR1## wherein R is straight-chain or branched-chain alkyl or alkenyl group having 10 to 24 carbon atoms, n is an integer of 4 to 25, one of X and Y is --SO.sub.3 M and the other thereof is hydrogen atom, and M is a monovalent cation.
    Type: Grant
    Filed: September 15, 1981
    Date of Patent: September 13, 1983
    Assignee: Arakawa Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kimio Kawatani, Ryoji Kaji
  • Process for preparing aqueous dispersion of rosin-base materials
    Patent number: 4380475
    Abstract: This invention provides a process for preparing an aqueous dispersion of a rosin-base material by an inversion method, the process being characterized in that the dispersant is at least one of compounds represented by the formula ##STR1## wherein R is hydrogen atom or lower alkyl group, A is straight-chain or branched-chain alkylene group having 2 or 3 carbon atoms, n is an integer of 4 to 25, one of X and Y is --SO.sub.3 M and the other thereof is hydrogen atom, and M is a monovalent cation.The aqueous dispersion obtained by the process of the invention have excellent sizing effects, very high stabilities and greatly reduced foaming properties.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: April 19, 1983
    Assignee: Arakawa Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kimio Kawatani, Shigenori Tsujimoto, Ryoji Kaji