C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 36/06 (2006.01) C08F 136/06 (2006.01)
Patent
CA 2506181
The invention concerns a method for obtaining a 1,3-butadiene homopolymer which consists in reacting a catalytic system in the presence of 1,3-butadiene and one or more mono-olefin(s) of 4 carbon atoms. The invention is characterized in that said catalytic system is based on at least: one conjugate diene monomer, one salt of one or more rare earth metals of an organic phosphoric acid, said salt being suspended in at least a saturated, inert hydrocarbon solvent of the aliphatic or alicyclic type, an alkylating agent consisting of alkylaluminium of formula AlR¿3? or HalR¿2?, wherein R is an alkyl group, and a halogen donor consisting of alkylaluminium halide.
La présente invention concerne un procédé d'obtention d'un homopolymère du butadiène-1,3 comprenant la réaction d'un système catalytique en présence de butadiène-1,3 et d'une ou plusieurs mono-oléfine(s) de 4 atomes de carbone. Selon l'invention, ce système catalytique est à base d'au moins - un monomère diène conjugué, - un sel d'un ou plusieurs métaux de terre rare d'un acide phosphorique organique, ledit sel étant en suspension dans au moins un solvant hydrocarboné inerte, saturé et de type aliphatique ou alicyclique, - un agent d'alkylation constitué d'un alkylaluminium de formule AIR3 ou HAIR2 où R est un groupe alkyle, et - un donneur d'halogène constitué d'un halogénure d'alkylaluminium.
Barbotin Fanny
Rasigade Jean-Philippe
Michelin Recherche Et Technique S.a.
Robic
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