METHOD FOR THE CONTINUOUS PREPARATION OF A CATALYTIC SYSTEM THAT IS USED TO POLYMERISE A CONJUGATED DIENE AND INSTALLATION FOR IMPLEMENTING SAME

• Main Authors: KIENER PIERRE, MARTINET FABRICE, BARBOTIN FANNY, ANSELME BERNARD, PAROLA HELENE
• Format: Patent
• Language: English
• Published: 10.07.2008
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a method for the continuous preparation of a catalytic system that can be used for the polymerisation of at least one conjugated diene monomer, said catalytic system being based on at least: a conjugated preformation diene; a salt of one or more rare earth metal(s) of an organic phosphoric acid, said salt being in suspension in at least one saturated inert hydrocarbon solvent of the aliphatic or alicyclic type; an alkylation agent comprising an alkylaluminium having formula A1R3 or HA1R2; and a halogen donor comprising an alkylaluminium halide. The inventive method is characterised in that it comprises the following successive steps in one line (L), namely: (i) a reaction between the conjugated preformation diene with the rare earth salt solution and the alkylation agent and the continued alkylation reaction for a minimum characteristic period of at least 5 minutes in an alkylation reactor (30) consisting of at least one well-mixed-type dynamic mixer, and (ii) the addition of the halogen donor to the mixture obtained in (i) in order to produce a reaction for the halogenation/ageing of the preformed catalytic system and continuous production of the preformed catalytic system at the output of the line (L).