Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2005-04-05
2005-04-05
Zalukaeva, Tatyana (Department: 1713)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S051000, C556S052000, C526S160000, C526S170000, C526S943000
Reexamination Certificate
active
06875879
ABSTRACT:
A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and an organometallic complex that incorporates a Group 3 to 10 transition metal and at least one chelating, dianionic triquinane ligand. The cis,syn,cis-triquinane framework is generated in three high-yield steps from inexpensive starting materials, and with heat and light as the only reagents. By modifying substituents on the triquinane ligand, polyolefin makers can control catalyst activity, comonomer incorporation, and polymer properties.
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Equistar Chemicals LP
Lee Rip A.
Schuchardt Jonathan L.
Zalukaeva Tatyana
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