Method for preparing styrene butadiene Copolymer s gradual with improved Mechanical and Physical Properties

摘要

The present Invention refers to a procedure for the preparation of styrene butadiene Copolymer improved, which achieves fully incorporated,I.e. with zero nodes after mixed in a Roller Mill; characterised in that it comprises the polymerization reaction in Solution, styrene and butadiene.In a Hydrocarbon Solvent type, Solvent / COPOLYMER in a ratio of 5.4, with organolitiados Initiators in a ratio calculated for disable Poisons such as initial step and a concentration of 0.01 g per gram of initiator Agent aleatorizante tetrahydrofuran Copolymer, concentration of 0.66, Gram for gram of SiCl4 concentration preparation of Copolymer, in 0.0.007 g / g of Copolymer and initiating the Reaction at 30C and deactivated Aromatic Chains alive with alcohol at a concentration of 0.006 g / g of Copolymer.