C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/642 (2006.01) C07F 17/00 (2006.01) C08F 2/34 (2006.01) C08F 210/02 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 210/16 (2006.01)
Patent
CA 2454060
The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer. In particular, the invention relates to identifying the comonomer incorporation behavior of metallocene polymerization catalyst compounds. More particularly, the invention relates to identifying metallocene catalyst compounds which incorporate comonomer poorly. Preferably, such metallocene catalyst compounds contain at least one substituted or unsubstituted fused ring cyclopentadienyl based ligand. The invention also relates to the use of these low comonomer incorporating metallocene catalyst compounds in catalyst systems to produce polymers that are easy to process into a variety of articles, especially polyethylene based film, having enhanced properties.
L'invention concerne des composés catalyseurs de polymérisation, des systèmes catalyseurs incluant ces composés catalyseurs et leur utilisation dans la polymérisation d'éthylène et d'au moins un comonomère. En particulier, l'invention concerne l'identification du comportement de composés catalyseurs de polymérisation à métallocène du point de vue de l'incorporation du comonomère. Plus particulièrement, l'invention concerne l'identification de composés catalyseurs à métallocène qui incorporent faiblement le comonomère. De préférence, ces composés catalyseurs à métallocène contiennent au moins un ligand cyclopentadiényle à noyaux condensés substitué ou non substitué. L'invention concerne aussi l'utilisation de ces composés catalyseurs à faible incorporation de comonomère dans des systèmes catalyseurs en vue de produire des polymères faciles à traiter pour obtenir divers articles, notamment un film à base de polyéthylène, aux propriétés améliorées.
Mccullough Laughlin G.
Vaughan George Alan
Borden Ladner Gervais Llp
Univation Technologies Llc
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