引发体系包括至少一种引发剂和下式的至少一种aminoalcoolate：其中R1，R2和R4各自独立地是烷基基团，直链或支链的，具有1至8个碳原子或基团的含 芳基烷基，烷基芳基或芳基; R3和R5各自独立地表示含有2至8个碳原子的未取代的或被C1-C8烷基或芳基或芳基亚烷基或亚芳基取代的直链或支链亚烷基; M表示碱金属，m为0或1至6的整数。用于制备（甲基）丙烯酸（共）聚合物（均聚物，嵌段或无规共聚物）的应用。

The initiation system comprises at least one initiator and at least one aminoalcoolate of formula: wherein R ^1, R ² and R ⁴ are each independently an alkyl radical, linear or branched, containing from 1 to 8 carbon atoms or an arylalkyl radical, alkyl aryl or an aryl radical; R ³ and R ⁵ are each, independently, an alkylene radical, linear or branched, containing from 2 to 8 carbon atoms unsubstituted or substituted by an alkyl radical C ₁ -C ₈ alkyl or aryl or arylalkylene radical or a radical arylene; M denotes an alkali metal and m is 0 or an integer from 1 to 6. Application to the preparation of (co) polymers of (meth) acrylic (homopolymers, block or random).