The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2011
Filed:
Jan. 21, 2003
Anne-valerie Ruzette, Paris, FR;
Florence Chauvin, Marseille cedex, FR;
Olivier Guerret, La Tour de Salvagny, FR;
Denis Bertin, Marseille, FR;
Bruno Vuillemin, Lescar, FR;
Ludwik Leibler, Paris, FR;
Pierre Gerard, Denguin, FR;
Yannick Ederle, Paris, FR;
Anne-Valerie Ruzette, Paris, FR;
Florence Chauvin, Marseille cedex, FR;
Olivier Guerret, La Tour de Salvagny, FR;
Denis Bertin, Marseille, FR;
Bruno Vuillemin, Lescar, FR;
Ludwik Leibler, Paris, FR;
Pierre Gerard, Denguin, FR;
Yannick Ederle, Paris, FR;
Arkema France, Colombes, FR;
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.