Abstract: The present invention is concerned with a process for providing a homogeneous particle-containing slurry comprising the steps of: (a) providing a vessel comprising at least one impeller rotating around a vertical axis of the vessel, the vessel further comprising an inlet and an outlet; (b) introducing the particle-containing slurry into the vessel or introducing components forming the particle-containing slurry into the vessel; (c) rotating the at least one impeller at least around the vertical axis for homogenizing and/or maintaining a homogeneous particle distribution within the slurry; (d) withdrawing the homogeneous particle-containing slurry via the outlet; (e) stopping the at least one impeller for a maximum time T, whereby T is calculated according to the following relations: u T = 4 ? g ? ( ? p - ? f ) ? D p 3 ? ? f ? C D ( 1 ) C D = 24 Re ? [ 1 + 0.173 ? Re 0.657 ] ( 2 ) T = h u T .

Abstract: A process for the solution polymerization of a polymer from an ?-olefin monomer and one or more ?-olefin comonomers in the presence of a catalyst, the process having a catalyst performance index (CPI) not higher than 15, wherein the catalyst performance index is defined according to equation (I): CPI = ( F C ? 2 + F C ? 8 ) / F Cat Catalyst ? Productivity ( I ) wherein FC2 and FC8 are the feed velocities of the monomer and comonomer feed streams in kg/h, FCat is the feed velocity of the catalyst and the catalyst productivity is the weight ratio of produced polymer to catalyst.

Abstract: The present invention is concerned with a process for providing a homogeneous particle-containing slurry comprising the steps of: (a) providing a vessel comprising at least one impeller rotating around a vertical axis of the vessel, the vessel further comprising an inlet and an outlet; (b) introducing the particle-containing slurry into the vessel or introducing components forming the particle-containing slurry into the vessel; (c) rotating the at least one impeller at least around the vertical axis for homogenizing and/or maintaining a homogeneous particle distribution within the slurry; (d) withdrawing the homogeneous particle-containing slurry via the outlet; (e) stopping the at least one impeller for a maximum time T, whereby T is calculated according to the following relations: u T = 4 ? g ? ( ? p - ? f ) ? D p 3 ? ? f ? C D ( 1 ) C D = 24 Re ? [ 1 + 0.173 ? Re 0.