Imino-amide catalysts for olefin polymerization

Details Imino-amide catalysts for olefin polymerization Imino-amide catalysts for olefin polymerization

2007-04-03

2007-04-03

Lorengo, J. A. (Department: 1755)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C556S012000, C556S032000, C556S051000, C502S167000

Reexamination Certificate

active

10923597

ABSTRACT:
The present invention provides a catalyst precursor, a catalyst system comprising the precursor, and a polymerization method using the catalyst system, an embodiment of the precursor is selected from the following structures:wherein T is a bridging group; M is selected from Groups 3 to 13 atoms, and the Lanthanide series of atoms the Periodic Table of the Elements; Z is a coordination ligand; each L is a monovalent, bivalent, or trivalent anionic ligand; X and Y are each independently selected from nitrogen, oxygen, sulfur, and phosphorus; each R can be the same or different and is a bulky substituent that is sterically hindering with respect to X and Y.

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