PROCESS FOR PREPARING ETHYLENE POLYMERS HAVING LONG CHAIN BRANCHES

The present invention relates to a process for the preparation of long chain branched ethylene polymers via the polymerization, preferably slurry polymerisation, of ethylene in the presence of a catalyst system comprising a bridged metallocene catalyst which is optionally supported on an inert support, and at least one alkenyl-aluminum compound as activating agent. The invention moreover relates to long chain branched ethylene polymers obtained by the present process.