Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2005-01-04
2005-01-04
Bell, Mark L. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S104000, C502S202000, C502S232000
Reexamination Certificate
active
06838410
ABSTRACT:
A process for making ethylene copolymers is disclosed. Ethylene copolymerizes with an α-olefin in the presence of a catalyst system comprising an activator and a silica-supported, bridged indenoindolyl metal complex having “open architecture.” The supported complex incorporates comonomers with exceptional efficiency, and the process gives ethylene copolymers having high molecular weights (Mw>100K) and very low densities (<0.910 g/cm3). Open architecture catalysts that include bridging through the indolyl nitrogen of the indenoindolyl framework are also described. Additionally, supported and unsupported indeno[1,2-b]indolyl catalysts provide exceptional activities in the preparation of elastomeric polypropylene and ethylene copolymers.
REFERENCES:
patent: 5064802 (1991-11-01), Stevens et al.
patent: 5153157 (1992-10-01), Hlatky et al.
patent: 5198401 (1993-03-01), Turner et al.
patent: 5241025 (1993-08-01), Hlatky et al.
patent: 5414180 (1995-05-01), Geerts et al.
patent: 5495035 (1996-02-01), Jordan et al.
patent: 5539124 (1996-07-01), Etherton et al.
patent: 5637659 (1997-06-01), Krishnamurti et al.
patent: 5648440 (1997-07-01), Sugano et al.
patent: 5902866 (1999-05-01), Nagy et al.
patent: 6211311 (2001-04-01), Wang et al.
patent: 6232260 (2001-05-01), Nagy et al.
patent: 6559251 (2003-05-01), Wang et al.
patent: 6583242 (2003-06-01), Wang et al.
patent: 6596826 (2003-07-01), Nagy
patent: 6608224 (2003-08-01), Resconi et al.
patent: 6613712 (2003-09-01), McDaniel et al.
patent: 6630547 (2003-10-01), Lynch et al.
patent: 6653416 (2003-11-01), McDaniel et al.
patent: 6673880 (2004-01-01), Schaverien et al.
patent: 6693156 (2004-02-01), Resconi
patent: 6703338 (2004-03-01), Holtcamp et al.
patent: 6730754 (2004-05-01), Resconi et al.
patent: WO 9924446 (1999-05-01), None
patent: WO 0153360 (2001-07-01), None
US 2004/0106514 A1 (Nagy et al) Jun. 3, 2004.*
US 2003/0032744 A1 (Nagy et al) Feb. 13, 2003.*
Buu-Hoi and Xuong,J. Chem. Soc. (1952) 2225.
J. Am. Chem. Soc. 118 (1996) 8024.
Organometallics 15(1996) 4045.
Hlatky Gregory G.
Lee Clifford C.
Mack Mark P.
Meverden Craig C.
Nagy Sandor
Bell Mark L.
Brown Jennine
Equistar Chemicals LP
Schuchardt Jonathan L.
LandOfFree
Catalysts for making polyolefins does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalysts for making polyolefins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalysts for making polyolefins will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3385627