Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1999-07-12
2000-11-14
Bell, Mark L.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502114, 502115, 502116, B01J10100, B01J10110, B01J10140, B01J10150
Patent
active
061470244
ABSTRACT:
The present invention provides a catalyst for the polymerization of olefin that exhibits improved selectivity and broader molecular weight distribution in the polymer product. The catalyst is a conventional supported Ziegler-Natta catalyst in combination with a mixture of at least two electron donors, both having the general formula SiR.sub.m (OR').sub.4-m where R is selected from the group consisting of an alkyl group, a cycloalkyl group, an aryl group and a vinyl group; R' is an alkyl group; and m is 0-3, wherein when R is an alkyl group, R may be identical with R'; when m is 0, 1 or 2, the R' groups may be identical or different; and when m is 1, 2 or 3, the R groups may be identical or different. This catalyst produces polypropylene having xylene solubles of 1-7 to 5.1 wt % and a molecular weight distribution of about 10.
REFERENCES:
patent: 5494872 (1996-02-01), Hosaka et al.
Burmaster Douglas Alan
Rauscher David John
Shamshoum Edwar S.
Bell Mark L.
DiVerdi Michael J.
Fina Technology Inc
Wheelington Jim D.
LandOfFree
Catalyst systems for improved stereoselectivity and broader mole does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst systems for improved stereoselectivity and broader mole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst systems for improved stereoselectivity and broader mole will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2065313