Process for producing ethylene homopolymers as copolymers of ethylene with alpha-monoolefins

摘要

A process for the homo- and co-polymerization of ethylene by means of a supported catalyst (1) containing inorganic oxide on a carrier material (1.1), a chromium-hydrocarbon complex compound (1.2). It is characteristic of the inventive method that a supported catalyst is used (1) (1.1) on a particular inorganic oxide carrier (1.2), a chromium-hydrocarbon complex compound of formula RCrACrR - wherein R is a 2n or 2n + 1 carbon atoms and 1 to n non-heaped double bonds - with n from 2 to 10 - comprising hydrocarbon or hydrocarbon radical annular and / or open-chain structure, Cr chromium and a is cyclooctatetraene, a divalent n-Octatetraenrest or their alkyl groups as substituents homologues - includes, as well as (2) - if appropriate - is that belongs to a particular group of alkyl aluminum compounds - a co-catalyst with a. In this way, polymers available with a particularly broad molecular weight distribution.