| abstract |
Described herein is a process and an apparatus for preparing propylene polymers, innparticular impact modified polymers containing mixtures of propylene and propyleneethylenencopolymers. The process comprises the steps of polymerizing propylenenoptionally with comonomers in at least one slurry reactor and at least one gas phasenreactor, at least 40 % of the polymer product being produced in the gas phase reactor(s),nrecovering from the slurry reactor a polymerization product containing unreactednmonomers and conducting the polymerization product to a first gas phase reactornessentially without recycling of the unreacted monomers to the slurry reactor before the gasnphase reactor. |