Patent ID: 7714082
Filing Date: 2010-05-11
Classification: C08F,Y10S

Abstract:
1. A continuous process for increasing a granular particle density of a polymeric product using at least one particle density promoting agent, comprising: passing a gaseous stream comprising at least one monomer through a fluidized bed reactor in the presence of a catalyst to form a polymeric product having a first granular particle density of less than or equal to 850 kg/m contacting the polymeric product with at least one particle density promoting agent to increase the granular particle density of the polymeric product by at least 2%; isolating the polymeric product having the at least 2% increased granular particle density from polymer products not having an increased granular particle density; withdrawing the polymeric product having an increased granular particle density and a recycle stream comprised of unreacted monomers; and cooling and reintroducing the recycle stream into the fluidized bed reactor with sufficient additional monomer to replace the monomer polymerized and withdrawn as the polymeric product; wherein the at least one particle density promoting agent is added to the recycle stream such that the recycle stream comprises at least 0.5 mole % of the at least one particle density promoting agent.