Initiation system comprising a silylated initiator for anionic (co)polymerization of (meth)acrylic monomer(s) and process using same

摘要

The initiation system comprises (1) at least one silylated initiator and (2) at least one alkaline metal alcoholate as ligand. The silylated initiator may be monofunctional and selected in particular from among the compounds of Formula (I) or difunctional and selected in particular from among the compounds of Formula (II): ;wherein R¹, R², R³ each independently represent a C₁-C₈alkyl radical, linear or branched; R⁴ is a linear or branched C₁-C₈alkylene radical; M is an alkaline metal or alkaline earth metal (valence q of 1 or 2); R⁵ and R⁶ each independently represent an alkyl radical, linear or branched, at C₁-C₈; R⁷, R⁸ each independently represent a C₁-C₈alkylene radical, linear or branched; M′ is an alkaline metal. Application is to the preparation of (meth)acrylic (co)polymers.