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
2011-01-18
2011-01-18
Wu, David (Department: 1796)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S167000, C526S141000, C526S147000, C526S211000, C526S217000, C526S236000
Reexamination Certificate
active
07871952
ABSTRACT:
A modified Ziegler-Natta catalyst system, a method for preparing the catalyst system, and a process for polymerizing an olefin in the presence of the catalyst system are disclosed. The catalyst system comprises a titanium or vanadium compound, an aluminum compound, and a 2-hydroxypyridine N-oxide. Improved properties such as increased molecular weight are obtained.
REFERENCES:
patent: 2540218 (1951-02-01), Shaw
patent: 2752356 (1956-06-01), Cislak
patent: 3218266 (1965-11-01), Ludlum
patent: 3968118 (1976-07-01), Lohaus et al.
patent: 4015060 (1977-03-01), Karayannis et al.
patent: 4136243 (1979-01-01), Appleyard et al.
patent: 4168358 (1979-09-01), Harada et al.
patent: 4298718 (1981-11-01), Mayr et al.
patent: 4399054 (1983-08-01), Ferraris et al.
patent: 4464518 (1984-08-01), Iwabuchi et al.
patent: 4469648 (1984-09-01), Ferraris et al.
patent: 4481301 (1984-11-01), Nowlin et al.
patent: 4483938 (1984-11-01), Rees
patent: 4495338 (1985-01-01), Mayr et al.
patent: 4518706 (1985-05-01), Gessell
patent: 4699961 (1987-10-01), Gessell
patent: 4739022 (1988-04-01), Blenkers et al.
patent: 4829034 (1989-05-01), Iiskolan et al.
patent: 4927797 (1990-05-01), Ewen
patent: 5100849 (1992-03-01), Miya et al.
patent: 5106926 (1992-04-01), Eisinger et al.
patent: 5258345 (1993-11-01), Kissin et al.
patent: 5492876 (1996-02-01), Gillis et al.
patent: 5534472 (1996-07-01), Winslow et al.
patent: 5968865 (1999-10-01), Wilson et al.
patent: 6228792 (2001-05-01), Carney
patent: 6291384 (2001-09-01), Mink et al.
patent: 6436864 (2002-08-01), Tagge
patent: 6498221 (2002-12-01), Nagy
patent: 6541592 (2003-04-01), Inagaki et al.
patent: 6627710 (2003-09-01), Sacchetti et al.
patent: 6713585 (2004-03-01), Mavridis et al.
patent: 6875829 (2005-04-01), Nagy
patent: 7560521 (2009-07-01), Collin et al.
R. Shroff and H. Mavridis, “New Measures on Polydispersity from Rehological Data on Polymer Melts,”J. Appl. Polym. Sci., 57, (1995), 1605-1626.
Morini Giampiero
Nagy Sandor
Pater Joachim T. M.
Eng Elizabeth
Equistar Chemicals LP
Schuchardt Jonathan L.
Wu David
LandOfFree
2-hydroxypyridine N-oxide-modified ziegler-natta catalyst... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with 2-hydroxypyridine N-oxide-modified ziegler-natta catalyst..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 2-hydroxypyridine N-oxide-modified ziegler-natta catalyst... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2662154