| abstract |
The compositions according to the invention comprise at least one copolymer and / or a grafted polymer comprising units Y derived from at least one acrylic and / or methacrylic ester and at least one unit of formula: wherein Z and Z 'represent a halogen atom or a radical chosen from alkyl, cycloalkyl, aryl, arylalkyl, phenyl, alkoxy, alkoxy, haloaryloxy, perhaloalkoxy and amine radicals.n n n Their preparation process consists in the fact that at least one acrylic and / or methacrylic ester is copolymerized and / or grafted with at least one oligomer or polymer of phosphazene carrying substituents Z and Z 'chosen from halogen atoms, alkyl, cycloalkyl, aryl, arylalkyl, phenyl, alkoxy, haloaryloxy, perhaloalkoxy and amine radicals, the copolymerization and / or grafting reaction being carried out in the presence of a free radical initiator. |