Single-site catalysts containing chelating N-oxide ligands

Details Single-site catalysts containing chelating N-oxide ligands Single-site catalysts containing chelating N-oxide ligands

2005-04-05

2005-04-05

Wu, David W. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S172000, C526S170000, C526S160000, C526S348000

Reexamination Certificate

active

06875829

ABSTRACT:
A single-site olefin polymerization catalyst and method of making it are disclosed. The catalyst comprises an activator and an organometallic complex. The complex comprises a Group 3 to 10 transition or lanthanide metal, M, and at least one chelating N-oxide ligand that is bonded to M. Molecular modeling results indicate that single-site catalysts based on certain chelating N-oxide ligands (e.g., 2-hydroxypyridine) will rival the performance of catalysts based on cyclopentadienyl and substituted cyclopentadienyl ligands.

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