The Nitrogen Is A Ring Member Patents (Class 516/60)
  • Fluorinated vinylidene cationic surfactant
    Patent number: 8168683
    Abstract: A fluorinated pyridinium cationic compound of formula (I) wherein, Rf is F(CF2)6(CH2CF2)m(CH2CH2)n—, m and n are each independently integers of 1 to 3, and R is H, C1 to C5 linear or branched alkyl, or C1 to C5 linear or branched alkoxy, having surfactant properties for lowering surface tension in an aqueous medium or solvent medium, and for use as a foaming agent.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: May 1, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Sheng Peng, Allison Mary Yake, Cheryl Lynn Casper
  • Reflective Polarized Lenses With High Transmission
    Publication number: 20090122261
    Abstract: The present invention relates to unique reflective polarized lenses that are anti-dazzling and reduce glare. In particular, it relates to polarized lenses utilizing a reflective polarizer, a high-transmission absorptive polarizer and photochromic treatment in a unique combination that can be injection molded to make thermoplastic ophthalmic lenses.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 14, 2009
    Inventors: Hsin-Hsin Chou, Hideyo Sugimura, Len Meissner
  • 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
  • Shear-stable mist-suppressing compositions
    Patent number: 6475408
    Abstract: Aqueous metal working fluids containing a water-soluble mist suppressing copolymer are disclosed. The copolymer includes styrene or hydrocarbyl-substituted styrene hydrophobic monomers and hydrophilic monomers. Optionally, the metal working fluid can be an oil-in-water emulsion.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: November 5, 2002
    Assignee: The Lubrizol Corporation
    Inventors: Richard A. Denis, Sanjay Kalhan, Robert E. Quinn