US 7,247,687 B2 · Late transition metal catalysts for olefin polymerization and oligomerization

Late transition metal catalysts for olefin polymerization and oligomerization

AssigneeExxonMobil Chemical Patents Inc.

InventorsVladimir Kuzunich Cherkasov, Michael Paviovich Bubnov, Nikolay Olegovich Druzhkov, Valentina Nikolavena Glushakova, Irina Alexandrovna Teplova, Nina Aleksandrovna Skorodumova, Gleb Arsent′evich Abakumov, Cynthia A. Ballinger, Kevin R. Squire, Jo Ann Marie Canich, Enock Berluche, Lisa Saunders Baugh, Donald Norman Schulz, Baiyi Zhao

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Abstract

This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen; X is a substituted or unsubstituted catecholate ligand provided that the substituted catecholate ligand does not contain a 1,2-diketone functionality.

Claims94

Dependent claims

A transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal;

L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen;
and X is a substituted or unsubstituted catecholate ligand provided that the substituted catecholate ligand does not contain a 1,2-diketone functionality.

Dependencies are inferred from the claim text.

Facts

Application

10/517,104Filed 17 Jul 2003

Published

US 2006/0047094 A12 Mar 2006

Granted

24 Jul 2007

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Classification15 codes

B01J 31/0214
With a metal-oxygen link: aryloxylates, e.g. phenolates
B01J 31/1805
Containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in…
B01J 31/1815
Cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom as ring member, e.g. pyridine:…
C07F 15/0066
Palladium compounds: without a metal-carbon linkage