Patent ID: 7282548
Filing Date: 2007-10-16
Classification: C08F

Abstract:
1. A process for the production of a polymer(s) having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % comprising repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer comprising mixing at least one isoolefin monomer, at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl 3 and at least one proton source and/or cationogen capable of initiating the polymerization process and at least one multiolefin cross-linking agent, wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds, wherein the process is continuous, and wherein the conversion level of the polymer is between 50% and 95%.