Patent ID: 6319875
Filing Date: 2001-11-20
Classification: C08F

Abstract:
An initiation system for anionic copolymerization of (meth)acrylic monomers comprising (1) either one or more monofunctional initiator(s) or one or more difunctional initiator(s), characterized in that these initiators are silylated compounds chosen from among:monofunctional silylated initiators of Formula (I): ##STR6##wherein:R.sup.1, R.sup.2, R.sup.3 each independently represent an alkyl radical, linear or branched, containing 1 to 8 carbon atoms;R.sup.4 represents an alkylene radical, linear or branched, containing 1 to 8 carbon atoms;M designates an alkaline metal or alkaline earth (valence q is 1 or 2), or the difunctional silylated initiators of Formula (II): ##STR7##wherein:R.sup.5 and R.sup.6 each independently represent a linear or branched alkyl radical containing 1 to 8 carbon atoms;R.sup.7 and R.sup.8 each independently represent a linear or branched alkylene radical containing 1 to 8 carbon atoms; andM' designates an alkaline metal,and (2) at least one alkaline metal alcoholate as ligand.