Patent ID: 6599969
Filing Date: 2003-07-29
Classification: C08F

Abstract:
A process for preparing stabilized olefin polymers which have a cold heptane extractables content in the range of from 0.0 to 2.0% by weight by the polymerization of olefins with Phillips catalysts, wherein the olefin polymer is, immediately after leaving the polymerization reactor, brought in to contact with a phenol derivative having at least one free hydroxy group, a boiling point above 270Â° C. measured under 100 kPa and a molecular weight not less than 250 wherein the pressure prevailing in the zone into which the phenol derivative is metered is in the range of from 100 to 2,000 kPa and the phenol derivative is present in a solvent which is substantially inert toward the constituents of the polymerization reaction mixture.