Patent ID: 7985811
Filing Date: 2011-07-26
Classification: B01J,C08F

Abstract:
1. A process for monitoring the static generated during a gas-phase polymerization to avoid or minimize reactor discontinuity events comprising: measuring carryover static using one or more of at least one static probe; wherein the at least one static probe measures current in the range of ±0-50 nanoamps/cm adding at least one continuity additive to the polymerization in an amount effective to maintain levels of electrostatic activity at or near zero, wherein the at least one continuity additive comprises an ethoxylated stearyl amine and an aluminum distearate, each present in said process in an amount ranging from 1-250 ppm, based on the total polymer produced in said process and wherein the ratio of said ethoxylated stearyl amine and said aluminum distearate ranges from 10:90 to 90:10.