Process to prepare ethylene propylene elastomer

Details Process to prepare ethylene propylene elastomer Process to prepare ethylene propylene elastomer

C - Chemistry, Metallurgy

08

F

C08F 210/16 (2006.01) C08F 210/18 (2006.01) C08F 4/659 (2006.01)

Patent

CA 2311068

A solution polymerization process for the preparation of elastomeric ethylene propylene (diene) elastomers is characterized by the use of a) an unbridged catalyst having a cyclopentadienyl ligand and a monosubstituted nitrogen ligand; and b) a boron activator. High molecular weight elastomers may be inexpensively prepared by the process of this invention. The elastomers are suitable for the manufacture of rubber sheets or membranes and automotive parts such as seals, belts, hoses and tire sidewalls.

Méthode de polymérisation de solution pour la préparation d'un élastomère éthylène-propylène (diene), caractérisée en ce qu'elle consiste à utiliser a) un catalyseur non ponté ayant un ligand de cyclopentadiényle et un ligand d'azote monosubstitué; et b) un activateur de bore. Il est possible de préparer des élastomères de poids moléculaire élevé de manière peu coûteuse grâce au procédé prévu par cette invention. Les élastomèeres servent à la fabrication de toiles ou de membranes cirées et de pièces automobiles comme des sièges, des ceintures, des tuyaux et des flancs de pneu.

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