Patent ID: 6414096
Filing Date: 2002-07-02
Classification: C08F,Y10S

Abstract:
A process for the preparation of a polyolefin by polymerization of an olefin of the formula R11â€”CH&boxH;CHâ€”R12, in which R11 and R12 are identical or different and are a hydrogen atom or a C1-C14-alkyl radical, at a temperature of 0Â° C. to 150Â° C., under a pressure of 0.5 to 100 bar, in solution, in suspension or in the gas phase and in the present of a catalyst which consists essentially of a metallocene and an aluminoxane of the formula (II) for the linear type, and/or of the formula (III) for the cyclic type, in which, in the formulae (II) and (III), R10 is a C1-C6-alkyl group and n is an integer from 2 to 50, wherein the metallocene is wherein said metallocene is ethyl-ethylene(indenyl)2 zirconium dichloride.