Patent ID: 6911511
Filing Date: 2005-06-28
Classification: C08F

Abstract:
1. Process for the preparation of a polymer or copolymer having a polydispersity of from about 1.8 to about 1.9, comprising a step of polymerization or copolymerization of at least one monomer via a radical route, in the presence of a polymerization or copolymerization initiator and of a stable free radical, the step being such that, per 100 mol of monomer, the following relationships are confirmed:  wherein F SFR ×(SFR) ranges from 0.0001 to 0.2 mol, and wherein: (SFR) represents the number of moles of stable free radical in the polymerization or copolymerization medium, F (INIT) represents the number of moles of polymerization or copolymerization initiator in the polymerization or copolymerization medium, and (F