Tri-n-octyl aluminum co-catalyst for higher density homopolymers for the solution process

Abstract

Catalyst systems and solution olefin polymerization processes using a combination of titanium compounds (e.g. halides) with vanadium compounds (e.g. halides or oxyhalides) with tri-n-octyl aluminum (TNOAL) as a co-catalyst, which provides lower in situ oligomerization of olefins that are incorporated into the homopolymer. This feature provides a higher density homopolymer using TNOAL, which enhances polymer properties such as increased moisture barrier and stiffness. Multi-reactor systems and solution olefin polymerization processes comprising this catalyst system.