Patents Assigned to K. K. Pollution Preventing Research Laboratory
  • Method for producing dibasic fatty acid using liquid nitrogen dioxide (N.sub.2 O.sub.4) as reacting agent
    Patent number: 4259524
    Abstract: A method for the oxidation of alicyclic hydrocarbons having substituent groups by the use of liquid nitrogen dioxide (N.sub.2 O.sub.4).
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: March 31, 1981
    Assignee: K.K. Pollution Preventing Research Laboratory
    Inventors: Wataru Ando, Ichiro Nakaoka
  • Method of producing N-formylamine
    Patent number: 4177121
    Abstract: This invention provides a method of producing N-formylamine by photosensitized oxygenation of aldehyde-amine mixture. According to this invention, N-formylamine can be produced directly by photosensitized oxygenation of an aldehyde-amine mixture without separating intermediate enamine. In this invention, enamine is not used as a reactant, i.e. starting material, but a mixture of the aldehyde and amine is used as a reactant.
    Type: Grant
    Filed: July 21, 1978
    Date of Patent: December 4, 1979
    Assignee: K. K. Pollution Preventing Research Laboratory
    Inventors: Wataru Ando, Kazuo Watanabe