processo para a síntese de poli (1,3-alcadienos) funcionalizados, poli (1,3-alcadienos) funcionalizados, processo para a preparação de (co) polímeros vinil aromáticos enxertados em um elastômero insaturado de uma forma controlada, e, (co) polímero vinil aromático de alto impacto.

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).