C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/423, 400/490
C08F 8/04 (2006.01) C08F 36/04 (2006.01)
Patent
CA 1145883
ABSTRACT OF THE DISCLOSURE: A process of preparing a bimodal or multimodal homopolymer of a conjugated diene or a bimodal or multi- modal copolymer of a conjugated diene with another conjugated diene or with a vinyl aromatic compound consists in polymer izing the monomer(s) in a reaction medium at a temperature of between 20°C. and 200°C. in the presence of a catalytic system comprising an organolithium initiator, a barium, strontium or calcium compound, and an organometallic com- pound of a metal of group 2B or 3A of the periodic classifi- cation of elements of the Mendeleev Table and adding hydrogen as a modifying agent to the reaction medium during the course of the polymerization reaction.
375107
Michelin & Cie (compagnie Generale Des Etablissements Michelin)
Robic Robic & Associes/associates
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