Organic compounds -- part of the class 532-570 series – Organic compounds – Rare earth containing
Patent
1995-09-11
2000-05-30
Bell, Mark L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Rare earth containing
502102, 502103, 502117, 502152, 502155, 502158, 556 11, 556 22, 556 23, 556 32, 556 43, 556 52, 556 53, C07F 500, C07F 900, C07F 1700, C07F 700
Patent
active
060692375
ABSTRACT:
New metallocene ligand systems and catalysts/catalyst precursors are described where the ligand system contains at least one open-pentadienyl ligand characterized by an acyclic six .pi. electron delocalized, five atomic center structure. The open pentadienyl ligand is bonded to either another pentadienyl ligand or a Cp ligand by a bridging group. The metal is from group 3-5 or the Lanthanides. These metallocene catalysts/catalyst precursors optionally in combination with co-catalysts can be used to generate a wide variety of different polymer types including HDPE, LLDPE, LHDPE, ethylene/propylene elastomers, tactiospecific C3+ .alpha.-olefins, intimate mixture thereof and the like.
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Ewen John A.
Strozier Robert W.
Bell Mark L.
Montell Technology Company BV
Pasterczyk J.
Strozier Robert W.
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