Patent ID: 9056303
Filing Date: 2015-06-16
Classification: B01J,C08F

Abstract:
1. A process for continuous preparation of a catalytic system that can be used for polymerization of at least one conjugated diene monomer, said catalytic system being based on at least: a preforming conjugated diene; an organic phosphoric acid salt of one or more rare-earth element(s), said salt being in solution in at least one saturated aliphatic or alicyclic and inert hydrocarbon-based solvent; an alkylating agent comprising an alkylaluminium having the formula AlR a halogen donor comprising an alkylaluminium halide; which comprises successively in one line: (i) an alkylation reaction between the preforming conjugated diene, with a solution of the salt of rare-earth element(s) and the alkylating agent, the alkylation reaction being carried out for a period of at least 5 minutes in an alkylation reactor composed of at least one well-mixed dynamic mixer; and (ii) addition of said halogen donor to the mixture obtained in (i) that has been removed from the alkylation reactor, and introduction of the mixture obtained in (i) to a continuous halogenation-ageing reactor, to produce a reaction for halogenation-ageing of the preformed catalytic system and to continuously produce said preformed catalytic system at an outlet of said line.