Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-02-14
2006-02-14
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, C526S135000, C526S941000
Reexamination Certificate
active
06998451
ABSTRACT:
A process for making polyolefins is disclosed. The process comprises polymerizing an olefin in the presence of an activator, an organometallic complex, and an aluminum phosphate support. The complex comprises a Group 3 to 10 transition metal and an indenoindolyl ligand that is bonded to the transition metal. The use of the aluminum phosphate support in combination with the indenoindolyl complex provides an unexpected boost in catalyst activity when compared with other common supports. When a combination of olefins is used, good comonomer incorporation is obtained.
REFERENCES:
patent: 4596862 (1986-06-01), McDaniel et al.
patent: 5698758 (1997-12-01), Rieser et al.
patent: 5869587 (1999-02-01), Auburn et al.
patent: 6184169 (2001-02-01), Sartain
patent: 6211311 (2001-04-01), Wang et al.
patent: 6232260 (2001-05-01), Nagy et al.
patent: 6440889 (2002-08-01), Tsuie
patent: 6451724 (2002-09-01), Nifant'ev et al.
patent: 6541583 (2003-04-01), Meverden et al.
patent: 6559251 (2003-05-01), Wang et al.
patent: 2003/0004052 (2003-01-01), Lynch et al.
patent: 2004/0181017 (2004-09-01), Lynch et al.
patent: WO 99/24446 (1999-05-01), None
patent: WO 01/53360 (2001-07-01), None
Noh et al.,J. Organometal. Chem. 580(1990) 90.
Buu-Hoi and Xuong,J. Chem. Soc. (1952) 2225.
Jüngling et al.,J. Organometal, Chem. 460(1993) 191.
Noh et al.,J. Organometal. Chem. 518(1996) 1.
Nagy Sandor
Neal-Hawkins Karen
Equistar Chemicals LP
Lee Rip A.
Schuchardt Jonathan L.
Tyrell John
Wu David W.
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