C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 17/00 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01) C08F 4/659 (2006.01) C08F 210/02 (2006.01)
Patent
CA 2301740
Group 4 metal complexes comprising a cyclopentaphenanthreneyl ligand, catalytic derivatives thereof and their use as olefin polymerization catalysts, especially for the copolymerization of ethylene and a vinylaromatic monomer are disclosed. The resulting copolymers are uniform, pseudo-random copolymers of ethylene and a vinylaromatic monomer having a cluster index, CIES less than 1.0 and a polymerized vinylaromatic monomer content less than 50 mole percent.
L'invention porte sur des complexes de métaux du groupe 4 comportant un ligand de cyclopentaphènanthrénéyle, sur leurs dérivés catalyseurs, et sur leur utilisation comme catalyseurs de polymérisation d'oléfines, et spécialement pour la copolymérisation d'éthylène et d'un monomère vinylaromatique. Les copolymères résultants uniformes et pseudoaléatoires présentent un indice de regroupement de moins de 1,0 et un contenu de monomère vinylaromatique polymérisé de moins de 50 moles %.
Arriola Daniel J.
Campbell Richard E. Jr.
Shankar Ravi B.
Timmers Francis J.
Dow Global Technologies Inc.
Smart & Biggar
The Dow Chemical Company
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