Process for reducing hexane extractables from ethylene copolymers.

摘要

A process for reducing the amount of hexane extractables present in ethylene copolymer resins produced by gas phase polymerization in the presence of a catalyst having a least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound and at least one silica support material, by utilizing a silica support material having a particle size having an average value of 15-25 microns with no more than 5% of the particles being greater than 50 microns.