Patents by Inventor Pascale Corpart

Pascale Corpart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polymers which exhibit thermothickening properties and process making same
    Patent number: 6838514
    Abstract: A polymer produced by polymerizing via water-in-oil emulsion polymerization one or more water soluble monomers with one or more polyalkoxylated monomers wherein said one or more polyalkoxylated monomers contains at least 25 alkylene oxide units and wherein said product demonstrates thermothickening properties, its method of manufacture and use thereof is disclosed.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: January 4, 2005
    Assignee: Rhodia Inc.
    Inventors: Dominic Wai Kwing Yeung, Leo Zhaoqing Liu, Bruno RC Langlois, Dominique Charmot, Pascale Corpart
  • Method for block polymer synthesis by controlled radical polymerization from dithiocarbamate compounds
    Patent number: 6812291
    Abstract: Chain end functionalized block copolymers having low polydispersity index are produced via controlled free radial polymerization of dithiocarbamates.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: November 2, 2004
    Assignee: Rhodia Chimie
    Inventors: Pascale Corpart, Dominique Charmot, Samir Zard, Xavier Franck, Ghenwa Bouhadir
  • Polymers which exhibit thermothickening properties and process making same
    Publication number: 20030204014
    Abstract: A polymer produced by polymerizing via water-in-oil emulsion polymerization one or more water soluble monomers with one or more polyalkoxylated monomers wherein said one or more polyalkoxylated monomers contains at least 25 alkylene oxide units and wherein said product demonstrates thermothickening properties, its method of manufacture and use thereof is disclosed.
    Type: Application
    Filed: April 9, 2003
    Publication date: October 30, 2003
    Inventors: Dominic Wai-Kwing Yeung, Leo Zhaoqing Liu, Bruno Rc Langlois, Dominique Charmot, Pascale Corpart
  • Synthesis method for block polymers by controlled radical polymerization from dithioester compounds
    Patent number: 6545098
    Abstract: The invention concerns a method for preparing, by radical polymerisation, block polymers of general formula (1), which consists in contacting: an ethylenically unsaturated monomer of formula CYY′(═CW—CW′)a═CH2: and a precursor compound of general formula (II): a radical polymerization initiator.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: April 8, 2003
    Assignee: Rhodia Chimie
    Inventors: Ghenwa Bouhadir, Dominique Charmot, Pascale Corpart, Samir Zard
  • Method for block polymer synthesis by controlled radical polymerisation
    Patent number: 6153705
    Abstract: The invention relates to a process for polymerizing block polymers of general formula (I): ##STR1## in which process the following are brought into contact with each other: an ethylenically unsaturated monomer of formula:CYY'(.dbd.CW--CW').sub.a .dbd.CH.sub.2,a precursor compoun of general formula (II): ##STR2## a radical polymerization initiator.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: November 28, 2000
    Assignee: Rhodia Chimie
    Inventors: Pascale Corpart, Dominique Charmot, Samir Z. Zard, Thibaud Biadatti, Daniel Michelet
  • Use of multi-block copolymers as thermo-thickeners
    Patent number: 6124382
    Abstract: The invention concerns the use as thermothickeners of multi-block copolymers of general formula (I) or (II): ##STR1## wherein E designates a polyoxyalkylene sequence; A designates a water-soluble polymer sequence; X is a sulphur or oxygen atom; Y is an oxygen atom or an --N--R' group, R' being a linear or branched alkyl; R is a linear or branched alkyl, aralky or alkylaryl group; and n is such that the molecular mass of the multi-block copolymers Mp is greater than 250,000 g/mol.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: September 26, 2000
    Assignee: Rhodia Chimie
    Inventors: Pascale Corpart, Herve Adam, Dominique Charmot