Patents Assigned to Rhone-Poulenc Surfactants & Specialties, L.P.
  • Aqueous dispersion of a surface active polymer having enhanced performance properties
    Patent number: 5686024
    Abstract: The present invention is directed to a new aqueous dispersion of surface active polymer which demonstrates enhanced surface active and performance properties more particularly as a foaming agent. The polymer comprises a vinyl monomer having at least one quaternized nitrogen atom, a vinyl monomer having at least one amide group, a vinyl monomer bearing both a hydrophobic and a hydrophylic group and optionally, a vinyl carboxylic monomer.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: November 11, 1997
    Assignee: Rhone-Poulenc Surfactants & Specialties, L.P.
    Inventors: Manilal S. Dahanayake, Tao Gao, Eric H. Larson
  • Recovery and reuse of surfactants from aqueous solutions
    Patent number: 5654480
    Abstract: Improve surfactant recovery upon ultrafiltration of a surfactant-containing aqueous solution can be obtained using an amphoteric surfactant as the surfactant.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: August 5, 1997
    Assignee: Rhone-Poulenc Surfactants & Specialties, L.P.
    Inventors: Manilal S. Dahanayake, Yun Brian Yang
  • Process for preparing fatty acid esters and amides of sulfonic acid salts
    Patent number: 5300665
    Abstract: Fatty acid esters of hydroxyalkylsulfonates and fatty acid amides of aminoalkylsulfonates are prepared by heating an excess of the fatty acids with the sulfonate until the water of condensation is removed. The excess fatty acid is removed by distillation and the isolated fatty acid ester or amide product is directly and rapidly cooled to minimize decomposition and color degradation.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: April 5, 1994
    Assignee: Rhone-Poulenc Surfactants and Specialties, L.P.
    Inventors: David J. Tracy, Mitchell B. Ferguson, Gordon Wall
  • Thermoplastic molding compositions
    Patent number: 5238985
    Abstract: The invention relates to thermoplastic compositions containing an effective internal lubricating amount of a branched guerbet alcohol derived ester having the formula ##STR1## wherein R is hydrogen, --CO--alkyl or --CO--alkenyl; each R' is independently alkyl or alkenyl, said alkyl or alkenyl radicals having from 5 to 25 carbon atoms; each R" is independently hydrogen, methyl or ethyl; m and n are each integers having a value of from 0 to 150; p is an integer having a value of from 4 to 12 and s is an integer having a value of from 2 to 36. The invention also relates to the molded or extruded product of said thermoplastic composition.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: August 24, 1993
    Assignee: Rhone-Poulenc Surfactants and Specialties, L.P.
    Inventor: Anthony J. O'Lenick, Jr.
  • Anhydrous blends of p-chloro-m-xylenol in surfactant mixtures
    Patent number: 5114978
    Abstract: A composition, or an aqueous mixture containing a composition of a substantially anhydrous blends of parachlorometaxylenol, fatty acid diethanolamides, and anionic surfactants of the class diethanolammonium alkylpolyoxyethyl sulfate and method for making such compositions. The compositions and solutions containing the composition have antimicrobial and cleansing properties.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: May 19, 1992
    Assignee: Rhone-Poulenc Surfactants and Specialties, L.P.
    Inventors: Mike E. Corti, Richard R. Tenore