Method of producing a polymer

C - Chemistry – Metallurgy – 08 – F

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C08F 2/06 (2006.01) C08F 2/42 (2006.01) C08F 4/68 (2006.01) C08F 36/06 (2006.01)

Patent

CA 2381357

A polymer of ethylenically unsaturated monomer, for example, 1,3-butadiene, having a desired molecular weight and distribution thereof is produced, with a high stability, by preparing a solution of hydrogen in an inert organic solvent for the monomer in which a vapor-liquid phase equilibrium of hydrogen is attained, and then by addition-polymerizing the monomer in the hydrogen-dissolved inert organic solvent in the presence of a catalyst preferably including a metallocene complex of transition metal compound, an inert compound of a non-coordination anionic compound with a cationic compound, an organic metal (aluminum) compound and, optionally, water.

Un polymère de monomère éthyléniquement insaturé, par exemple, le 1,3-butadiène, ayant un poids moléculaire souhaité et la distribution de celui-ci est produite, avec une stabilité élevée, en préparant une solution d'hydrogène dans un solvant organique inerte pour le monomère dans lequel une phase d'équilibre liquide-vapeur d'hydrogène est atteint, et ensuite en polymérisant par addition le monomère dans le solvant organique inerte dissout par l'hydrogène en la présence d'un catalyseur comprenant de préférence un complexe métallocène de composé de métal de transition, un composé inerte d'un anionique non-coordonné avec composé cationique, un composé de métal organique (aluminium) et, en option, de l'eau.

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