Patents by Inventor Agnieszka Wilczewska

Agnieszka Wilczewska 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).

  • Method for synthesis of polymers with thiol functions
    Patent number: 7396901
    Abstract: The invention concerns a method for preparing polymers having at least a thiol function, comprising pyrolysis of at least a polymer having at least a function of formula (I), wherein: R1, R2, R3 and R4 are such as defined in the description
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: July 8, 2008
    Assignee: Rhodia Chimie
    Inventors: Zofia Agnieszka Wilczewska, Mathias Destarac, Hervé Adam, Samir Zard, Chakib Kalai, Gérard Mignani
  • Cosmetic composition comprising a block copolymer
    Publication number: 20070212322
    Abstract: The present invention relates to a cosmetic composition comprising at least one diblock copolymer, as well as to the use of the said diblock copolymer as a modifier of properties of cosmetic compositions, more preferably of compositions for the skin and/or the hair. The diblock copolymer comprises two blocks, block A and block B, wherein block A is a polycationic block and block B is a neutral block.
    Type: Application
    Filed: May 11, 2007
    Publication date: September 13, 2007
    Inventors: Bruno Bavouzet, Mathias Destarac, Pascal Herve, Agnieszka Wilczewska
  • Method for free radical reduction of dithiocarbonylated or dithiophosphorylated functions borne by a polymer
    Patent number: 7109276
    Abstract: The invention concerns a method for preparing a polymer, comprising a step which consists in contacting: (A) at least a living organic polymer having at its chain end a dithiocarbonylated or dithiophosphorylated function capable of being reactivated; (B) at least a source of free radicals; and (C) at least an organic compound bearing a labile hydrogen atom, whereby the dithiocarbonylated or dithiophosphorylated function present on said living organic polymer is substituted by a hydrogen atom.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: September 19, 2006
    Assignee: Rhodia Chimie
    Inventors: Zofia Agnieszka Wilczewska, Mathias Destarac, Samir Zard, Chakib Kalai, Gérard Mignani, Hervé Adam
  • Formulation comprising an ionic compound, a polyionic polymer, and a block copolymer
    Publication number: 20050182185
    Abstract: The invention relates to a formulation comprising an ionic compound and a polyionic polymer. The invention more specifically relates to an improved formulation thereof, further comprising a copolymer. The improved formulation avoids phase-separation of colloidal particles comprising the ionic compound and the polyionic polymer. The formulation comprises a copolymer comprising two moieties A and B, wherein moiety A is polyionic in the pH conditions of the formulation, and moiety B is neutral in the pH conditions of the formulation.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 18, 2005
    Inventors: Pascal Herve, Mathias Destarac, Olivier Anthony, Bruno Bavouzet, Mathieu Joanicot, Agnieszka Wilczewska
  • Method for depositing a polymer onto a surface by applying a composition onto said surface
    Publication number: 20050180937
    Abstract: The invention relates to a method for depositing a polymer onto a surface, by applying an aqueous composition, preferably an aqueous composition, onto said surface. The invention also relates to a method for making the composition. The composition comprise a block copolymer, comprising at least two blocks A and B, wherein block A is a polyionic block and block B is a neutral block.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 18, 2005
    Inventors: Natalie Cadena, Mathias Destarac, Pascal Herve, Agnieszka Wilczewska
  • Method for synthesis of polymers with thiol functions
    Publication number: 20040132961
    Abstract: The invention concerns a method for preparing polymers having at least a thiol function, comprising pyrolysis of at least a polymer having at least a function of formula (I), wherein: R1, R2, R3 and R4 are such as defined in the description.
    Type: Application
    Filed: November 3, 2003
    Publication date: July 8, 2004
    Inventors: Zofia Agnieszka Wilczewska, Mathias Destarac, Herve Adam, Samir Zard, Chakib Kalai, Gerard Mignani
  • Method for free radical reduction of dithiocarbonylated or dithiophosphorylated functions borne by a polymer
    Publication number: 20040122193
    Abstract: The invention concerns a method for preparing a polymer, comprising a step which consists in contacting: (A) at least a living organic polymer having at its chain end a dithiocarbonylated or dithiophosphorylated function capable of being reactivated; (B) at least a source of free radicals; and (C) at least an organic compound bearing a labile hydrogen atom, whereby the dithiocarbonylated or dithiophosphorylated function present on said living organic polymer is substituted by a hydrogen atom.
    Type: Application
    Filed: October 22, 2003
    Publication date: June 24, 2004
    Inventors: Zofia Agnieszka Wilczewska, Mathias Destarac, Samir Zard, Chakib Kalai, Gerad Mignani, Herve Adam