METHOD OF PRODUCING AND USING MATERIALS WHICH ARE REINFORCED AGAINST IMPACT AND WHICH CONTAIN BLOCK COPOLYMERS THAT ARE OBTAINED BY MEANS OF CONTROLLED RADICAL POLYMERISATION IN THE PRESENCE OF NITROXIDES

摘要

The present invention , in order to strengthen the weak polymer matrix purpose , a controlled radical polymerization in the presence of a nitroxide It relates to the preparation and use of the block copolymer obtained by . The present invention , (i) provide advantages, such as fine dispersion of the copolymer molecules in the copolymer and the simplicity of synthesis used , and (ii) a weak matrix , which provides for enhanced transparency and a high impact of the substance . More specially , the present invention is related to the radical synthesis of the block copolymers having three or more blocks , which is less than 0 of a block having a glass transition temperature , 0 excess of the thermoplastic end blocks having a glass transition temperature including , to ensure the compatibility with a weak matrix , reinforced against impact .