Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1988-11-08
1990-05-15
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502104, 502111, 502117, 502120, C08F 464
Patent
active
049258214
ABSTRACT:
This invention relates to a process for preparing a supported metallocene alumoxane catalyst for use in the polymerization of olefins. The invention particularly relates to the use of silica gel containing from about 6 to about 20 percent by weight adsorbed water as the catalyst support material. It has been found that such silica gel may be safely added to a solution, of trialkylaluminum to form by direct reaction with the adsorbed water content of the silica gel catalyst support material the majority of the alumoxane component requirement of the catalyst system. An alkylalumoxane coated silica gel is formed to which a trimethylaluminum treated metallocene may be added and the resulting material dried to free-flowing powder. The dry free flowing powder may then be used as a supported metallocene alumoxane catalyst complex for gas phase or liquid phase polymerization of olefins. The supported catalyst produced by such procedure has an activity at least comparable to a catalyst of similar composition which is produced exclusively with trimethylaluminum as the alumoxane forming aluminum alkyl.
REFERENCES:
patent: 4808561 (1989-02-01), Welborn
Exxon Chemical Patents Inc.
Garvin Patrick P.
Kurtzman M. B.
LandOfFree
Method for utilizing triethyaluminum to prepare an alumoxane sup does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for utilizing triethyaluminum to prepare an alumoxane sup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for utilizing triethyaluminum to prepare an alumoxane sup will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-621552