Patent ID: 6689844
Filing Date: 2004-02-10
Classification: C08F

Abstract:
A process for the synthesis of a polymer composition having a reduced living halogen content, comprising:polymerizing at least one ethylenically unsaturated monomer using a) at least one initiator containing a transferable halogen and b) one or more metal catalysts comprising at least one transition metal, in the presence of ligands which can form a coordination compound with said one or more metal catalysts, to obtain a polymer composition having a living halogen content, and after said polymerizing, reacting said polymer composition having a living halogen content with at least one organic nitrogen compound in the presence of a nonpolar solvent, thereby reducing the living halogen content to obtain said polymer composition having a reduced living halogen content; wherein said reduced living halogen content is &lE;100 ppm in said polymer composition having a reduced living halogen content.