Nova Chemicals (International) S.a.

Nova Chemicals Inc.

Wei Xu

Qinyan Wang

Xiaoliang Gao

Stephen John Brown

Rupert Edward Von Haken Spence

Douglas W Stephan

Ian Douglas McKay

Daryll G Harrison

Linda Koch

Ryan Paul Wurz

Rupert Edward Spence

Peter Zoricak

John McMeeking

Ian Mckay

John Mcmeeking

Catalyst activator

Organometallic complexes having two phosphinimine ligands and at least one activatable ligand are catalyst components for olefin polymerization. Preferred polymerization systems are prepared by combining the organometallic complexes with an ionic activator and/or an alumoxane. Preferred catalyst components contain titanium, zirconium, or hafnium and are activated with an ionic activator to form catalysts for ethylene polymerization.

Bis-phosphinimine catalyst

Olefin co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of a pyridyl bridged bisphosphinimine complex of a Group 8, 9 or 10 metal.

Group 8, 9 or 10 olefin copolymerization catalyst

Olefin co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of a tridentate complex of a Group 8, 9 or 10 metal.

Group 8, 9 or 10 transition metal catalyst for olefin polymerization

Aluminum-phosphinimine complexes function as a component in a catalyst system for the (co)polymerization of ethylene. The inventive catalyst components form a highly productive polymerization system when activated with so-called &ldquo;ionic activators&rdquo;. The need for conventional transition metal catalyst metals (such as titanium, hafnium, zirconium or vanadium) is eliminated.

Aluminum-phosphinimine complexes as catalysts for the (co)polymerization of ethylene

Organometallic complexes having a phosphinimine ligand, a (non-phosphinimine) heteroligand and at least one activatable ligand are catalyst components for olefin polymerization. Preferred polymerization systems are prepared by combining the organometallic complexes with an ionic activator and/or an alumoxane. Preferred catalyst components contain Ti, Zr or Hf and are activated with an ionic activator to provide ethylene polymerization catalysts.

Phosphinimine/heteroatom catalyst component

Growing community of inventors

Calgary, Canada

Wei Xu