Patents by Inventor Anne Valerie Ruzette

Anne Valerie Ruzette 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 of producing and using materials which are reinforced against impact and which contain block copolymers that are obtained by means of controlled radical polymerization in the presence of nitroxides
    Patent number: 8013062
    Abstract: The invention relates to the production and use of block copolymers which are obtained by means of controlled radical polymerization in the presence of nitroxides for the purpose of reinforcing fragile polymer matrices. The invention offers advantages such as (i) simplicity of copolymer synthesis and use and (ii) fine dispersion of the copolymer molecules in the fragile matrix, which ensures both the transparency of the material and high reinforcement against impact. More specifically, the invention relates to the radical synthesis of block copolymers comprising at least three blocks, which include one block having a glass transition temperature of less than 0° C. and a thermoplastic end block having a glass transition temperature of more than 0° C., thereby guaranteeing compatibility with the fragile matrix to be reinforced against impact.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: September 6, 2011
    Assignee: Arkema France
    Inventors: Anne-Valerie Ruzette, Florence Chauvin, Olivier Guerret, Denis Bertin, Bruno Vuillemin, Ludwik Leibler, Pierre Gerard, Yannick Ederle
  • Method of producing and using materials which are reinforced against impact and which contain block copolymers that are obtained by means of controlled radical polymerization in the presence of nitroxides
    Publication number: 20060063891
    Abstract: The invention relates to the production and use of block copolymers which are obtained by means of controlled radical polymerisation in the presence of nitroxides for the purpose of reinforcing fragile polymer matrices. The invention offers advantages such as (i) simplicity of copolymer synthesis and use and (ii) fine dispersion of the copolymer molecules in the fragile matrix, which ensures both the transparency of the material and high reinforcement against impact. More specifically, the invention relates to the radical synthesis of block copolymers comprising at least three blocks, which include one block having a glass transition temperature of less than 0° C. and a thermoplastic end block having a glass transition temperature of more than 0° C., thereby guaranteeing compatibility with the fragile matrix to be reinforced against impact.
    Type: Application
    Filed: January 21, 2003
    Publication date: March 23, 2006
    Inventors: Anne-Valerie Ruzette, Florence Chauvin, Olivier Guerret, Denis Bertin, Bruno Vuillemin, Ludwik Leibler, Pierre Gerard, Yannick Ederle
  • Baroplastic materials
    Patent number: 6632883
    Abstract: The present invention relates to block copolymer compositions capable of being processed by the application of pressure. The invention also provides methods for predicting phase diagrams of polymer blends and block copolymers, particularly block copolymers comprising hard and soft blocks having properties described herein. The methods of the invention allow prediction of polymeric systems which can be processed under conditions that do not promote polymer degradation.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: October 14, 2003
    Assignees: Massachusetts Institute of Technology, University of Massachusetts
    Inventors: Anne M. Mayes, Anne Valerie Ruzette, Thomas P. Russell, Pallab Banerjee
  • Baroplastic materials
    Publication number: 20020042480
    Abstract: The present invention relates to block copolymer compositions capable of being processed by the application of pressure. The invention also provides methods for predicting phase diagrams of polymer blends and block copolymers, particularly block copolymers comprising hard and soft blocks having properties described herein. The methods of the invention allow prediction of polymeric systems which can be processed under conditions that do not promote polymer degradation.
    Type: Application
    Filed: February 16, 2001
    Publication date: April 11, 2002
    Inventors: Anne M. Mayes, Anne-Valerie Ruzette, Thomas P. Russell, Pallab Banerjee