Added Material Contains Nitrogen Compound Patents (Class 526/83)
  • Diisoprenyl ether
    Patent number: 3956400
    Abstract: Di(2-methylene-but-3-en-1-yl) ether, methods to make this compound and the use of this compound as a crosslinking agent are disclosed.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: May 11, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Paul W. Solomon
  • Polymerization of acrylamide in the presence of water-soluble nitrogen compounds
    Patent number: 3951934
    Abstract: A process for producing a substantially nonionic water-soluble acrylamide polymer produced without the occurence of hydrolysis of the acrylamide polymer by heating when the reaction system undergoes an unavoidable heat aging such as due to heat of polymerization comprising polymerizing a comparatively high concentration aqueous solution of acrylamide in the presence of a specific water-soluble nitrogen compound.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: April 20, 1976
    Assignee: Nitto Chemical Industry Co., Ltd.
    Inventors: Iwao Ohshima, Seiichi Chiba, Kenzo Ariyama, Yasuo Ogawa, Zengiro Kawamura