The Nitrogen Is A Ring Member (e.g., Imidazoline Salt Of An Organosulfonic Acid) Patents (Class 516/149)
  • Quaternized amido cyclic amine surfactant
    Patent number: 7053127
    Abstract: A quaternary surfactant comprising a cyclic diamine group, compositions comprising the quaternized amido cyclic amine surfactant, a gelled aqueous composition comprising the quaternized amido cyclic amine surfactant, use of the gelled aqueous well treatment applications and methods of preparation and intermediates used to prepare the quaternized amido cyclic amine surfactant.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: May 30, 2006
    Assignee: Nalco Company
    Inventors: Duane S Treybig, Kin-Tai Chang