Slurry phase polymerisation process
AssigneeIneos Manufacturing Belgium NV
InventorsStephen Kevin Lee, Daniel Marissal, Brent R. Walworth
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Abstract
A process for controlling a slurry phase (co-) polymerisation process in the presence of a polymerisation catalyst, which comprises maintaining the density SPAN of the polymer powder particles (defined as the absolute value of the density difference in g/cm3 between the average density of the polymer particles exiting the reactor with particle size above D90 and the average density of the material with particle size below D10) below 0.005, preferably below 0.003, more preferably below 0.0026, most preferably below 0.0023.
Claims26
A process for controlling a slurry phase (co-) polymerisation process in a reactor in the presence of a polymerisation catalyst, which process comprises maintaining the density SPAN of the polymer powder particles (defined as the absolute value of the density difference in g/cm3 between the average density of the polymer particles exiting the reactor with particle size above D90 and the average density of the material with particle size below D10) below 0.005, D95 for the polymer powder particles being less than 1000 microns and the particle size distribution of the polymer particles being such that (D90-D10)/D50 is less than 1.5.
Dependencies are inferred from the claim text.