Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1990-02-16
1991-08-20
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...
502122, 502124, 502127, C08F 464
Patent
active
050414038
ABSTRACT:
Disclosed is a catalyst composition for use in the polymerization of olefins, which is comprised of (a) a catalyst component containing magnesium, titanium, a halogen, and an ingredient derived from an ester compound, and (b) an organic aluminum compound. The catalyst activity and capability of providing a highly stereroregular polymer are enhanced by preparing the catalyst component (a) by a process wherein, during or after the formation of a solid catalyst component containing magnesium, titanium, and a halogen, the solid catalyst component is treated with an ester of the formula:
REFERENCES:
patent: 4290915 (1981-09-01), Toyota et al.
patent: 4727049 (1988-02-01), Furuhashi et al.
patent: 4914069 (1990-04-01), Job et al.
Fushimi Masaki
Miyake Shigenobu
Nakajo Tetuo
Sakurai Hideki
Garvin Patrick P.
Peebles Brent M.
Showa Denko K.K.
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