A method for the preparation of polyolefins with a broad molecular weight distribution

摘要

A method for the preparation of polyolefins in the case of pressures of from 5 to 4000 bar and temperatures of from 20 to 350 deg c in the presence of a catalyst system, which is an organometallic compound from the group consisting of the metallocenes or of the catalytically active iron -, cobalt -, nickel - or palladium complexes, wherein the organometallic compound is a lewis - bases - functionality, which is arranged in such a way that they intramolecularly to the central metal atom of the organometallic compound can coordinate, wherein the reaction temperature is adjusted such that the resulting polyolefin a molecular weight distribution m φ w φ / m φ n φ /, measured by gel permeation chromatography, of = has 5,0.