method for achieving a jump in mooney viscosity increase in high molecular weight polybutadiene production; neodymium catalyzed high molecular weight polybutadiene; rubber mixtures; and use of rubber blends

摘要

abstract method for achieving a jump in mooney viscosity increase in high molecular weight polybutadiene production; neodymium catalyzed high molecular weight polybutadiene; rubber mixtures; and use of rubber blends the invention relates to a method for achieving a jump in mooney viscosity increase in high molecular weight polybutadiene production having a content 95% by weight of 1,4-cis units and 1% by weight. 1,2-vinyl weight, characterized in that 1) at least one monomer selected from butadiene and / or isoprene is polymerized at temperatures between -20 ° C to 150 ° C in the presence of at least one inert organic solvent, and in the presence of of at least one neodymium carboxylate-based catalyst, 2) the polymerization is then terminated by the addition of protic compounds and 3) then sulfur chlorides are added to the polymer and prior to addition these sulfur chlorides are treated with a carboxylic acid, fatty acid and / or fatty acid ester. 1/1