C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 17/00 (2006.01) C08F 4/52 (2006.01) C08F 4/64 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01)
Patent
CA 2248689
Yttrium complexes of dibenzopyrolyl substituted cyclopentadienyl ligands (I) are useful as ethylene polymerization catalysts and uniquely prepare low molecular weight ethylene polymers having a high degree of terminal vinyl unsaturation wherein Y is yttrium and R and Z are as defined in claim 1.
Des complexes d'yttrium de ligands cyclopentadiényle à substitution dibenzopyrolyle sont utiles en tant que catalyseurs de polymérisation de l'éthylène et permettent de préparer de manière unique des polymères d'éthylène à faible poids moléculaire ayant un degré élevé d'insaturation vinylique terminale, Y étant yttrium et R et Z étant définis dans la revendication 1.
Patton Jasson T.
Soto Jorge
Dow Global Technologies Inc.
Smart & Biggar
The Dow Chemical Company
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