High-temperature olefin polymerisation process in solution

C - Chemistry – Metallurgy – 08 – F

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C08F 210/02 (2006.01) C08F 2/06 (2006.01) C08F 4/642 (2006.01) C08F 10/02 (2006.01) C08F 4/659 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2487686

A high-temperature solution process for making polyolefins is disclosed. Olefins polymerize at greater than about 130~C in the presence of an activator and an organometallic complex. The complex includes a bridged indenoindolyl ligand. One part of the ligand is a second indenoindolyl group or a polymerization-stable, cyclopentadienyl-like group having an extended pi- electron system. Because the catalysts activate quickly and thoroughly, even with low levels of an alumoxane, the invention provides an efficient way to make high-molecular-weight (Mw > 100K) polyolefins.

La présente invention concerne un processus de solution à haute température permettant de fabriquer des polyoléfines. Cette invention concerne aussi des oléfines polymérisées à plus de 130?0¿ C en présence d'un activateur et d'un complexe organométallique. Ce complexe comprend un ligand indénoindolyle ponté. Une partie de ce ligand est un second groupe indénoindolyle ou un groupe de type cyclopentadiènyle stable par polymérisation possédant un système électron pi étendu. Comme les catalyseurs activent rapidement et complètement, même avec de bas niveaux d'alumoxane, cette invention offre une manière efficace de fabriquer des polyoléfines de masse moléculaire élevée (Mw > 100K).

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