Patent ID: 8871886
Filing Date: 2014-10-28
Classification: C08F

Abstract:
1. A process for making a low density polymer in a polymerization reactor system, the process comprising: polymerizing an olefin monomer, and optionally an olefin comonomer, in the presence of a diluent in a polymerization reactor to make a polymerization product slurry consisting of a liquid phase and a solid phase, wherein the solid phase comprises an olefin polymer having a density of between about 0.905 g/cm discharging the polymerization product slurry from the polymerization reactor through a continuous take-off valve to make a mixture further comprising a vapor phase upstream of a flashline heater, wherein the flashline heater is upstream of a separation vessel, wherein the mixture comprises, at least at one location upstream of the separation vessel, a pressure less than a bubble point pressure of a component in the polymerization product slurry.