Process for the synthesis of poly (1,3 - alcadienos) functionalized poly (1,3 - alcadienos) functionalized.Process for the preparation of (CO) polymers of vinyl aromatic grafted onto an unsaturated elastomer in a controlled manner, and (CO) polymer of high impact vinyl aromatic.

摘要

Process for the preparation of vinyl aromatic (co) polymers grafted on an elastomer in a controlled manner, comprising: dissolving an elastomer functionalized with bromoalkanes and nitroxy radicals, soluble in non-polar solvents, in a liquid phase consisting of a mixture of vinyl aromatic monomer(s)/polymerization solvent; feeding at least one radical initiator to the mixture, containing the functionalized elastomer in solution, and polymerizing the mixture thus obtained at a temperature higher than or equal to 1200 C; recovering the vinyl aromatic (co) polymer obtained after devolatization; and recycling the solvent/monomer(s) mixture, coming from the devolatization, to step (a).