Method of synthesis of polymers by radical polymerisation 27, with the aid of xanthates

摘要

The invention concerns a method for preparing polymers, characterised in that it consists in contacting: at least an ethylenically unsaturated polymer, at least a source of free radicals, and at least a compound of general formula (IA) wherein R2 represents a group of formula (I); R3 being advantageously an electron-attracting group.