Process for synthesis of polymer compositions with reduced halogen content, polymer composition with reduced halogen content as well as use of this composition

摘要

The present invention relates to processes for synthesis of polymer compositions with reduced living halogen content, wherein ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable halogen and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts and, after the polymerization, the living halogen atoms present in the polymer are at least partly eliminated, wherein after the polymerization the polymer composition is reacted with at least one organic nitrogen compound in the presence of a nonpolar solvent. Furthermore, polymer compositions with reduced living halogen content as well as the use of these compositions as additive to lubricating oils is subject matter of the present invention.