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
2007-01-30
2007-01-30
Choi, Ling-Sui (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S103000, C502S076000, C502S125000, C502S121000, C526S124300, C526S124200, C526S124600
Reexamination Certificate
active
10898739
ABSTRACT:
A pre-catalyst is formed by reacting butylethylmagnesium with an alcohol to form a magnesium alkoxide compound, followed by contacting the magnesium alkoxide compound with a phosphorous compound to form a magnesium alkoxide phosphorous compound mixture. The magnesium alkoxide phosphorous compound mixture is subsequently reacted with TiCl4to form a MgCl2support. The MgCl2support is then contacted with an internal donor while being heated to form a first catalyst slurry, which is then contacted with TiCl4while being heated to form a second catalyst slurry. The second catalyst slurry is next contacted with TiCl4while being heated to form a third catalyst slurry, which is washed and dried, resulting in a highly active pre-catalyst with controlled morphology. The pre-catalyst may be combined with one or more co-catalysts and optionally one or more external electron donors to form an active catalyst system, which may be used for the polymerization of olefins.
REFERENCES:
patent: 4107413 (1978-08-01), Giannini et al.
patent: 4114319 (1978-09-01), Governale
patent: 4124532 (1978-11-01), Giannini et al.
patent: 4220554 (1980-09-01), Scata et al.
patent: 4294721 (1981-10-01), Ceccin et al.
patent: 4439540 (1984-03-01), Ceccin et al.
patent: 4460701 (1984-07-01), Terano et al.
patent: 4562173 (1985-12-01), Terano et al.
patent: 4634687 (1987-01-01), Fujita et al.
patent: 4657882 (1987-04-01), Karayannis et al.
patent: 4673662 (1987-06-01), Bailly
patent: 4721763 (1988-01-01), Bailly et al.
patent: 4784983 (1988-11-01), Mao et al.
patent: 4861847 (1989-08-01), Mao et al.
patent: 5066738 (1991-11-01), Ewen
patent: 5098875 (1992-03-01), Bailly et al.
patent: 5227355 (1993-07-01), Seppala et al.
patent: 5945366 (1999-08-01), Kataoka et al.
patent: 6051524 (2000-04-01), Karayannis et al.
patent: 6376417 (2002-04-01), Yang et al.
patent: 6399837 (2002-06-01), Wilson et al.
patent: 1083187 (1999-03-01), None
Choi Ling-Sui
Fina Technology, Inc.
Kilpatrick-Lee Diane L.
Krueger Tenley R.
LandOfFree
Process for forming a ziegler-natta catalyst system having a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for forming a ziegler-natta catalyst system having a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for forming a ziegler-natta catalyst system having a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3785518