Catalyst composition having improved comonomer reactivity

Details Catalyst composition having improved comonomer reactivity Catalyst composition having improved comonomer reactivity

1998-02-25

2000-02-22

Wu, David W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526153, 526160, 5263485, 5263486, 526901, 526943, C08F 444

Patent

active

060281510

ABSTRACT:
A process for producing an olefin polymer, which comprises contacting at least two olefin monomers under polymerization conditions with a catalyst composition comprising A) an aluminoxane-impregnated support prepared by contacting an aluminoxane with an inert carrier material and heating to a temperature of at least about 80.degree. C.; B) a metallocene of the formula:

REFERENCES:
patent: 4242479 (1980-12-01), Yokota et al.
patent: 5122491 (1992-06-01), Kioka et al.
patent: 5840645 (1998-11-01), Ohno et al.
Soga, et al., "Activation of SiO.sub.2-s upported zirconocene catalysts by common trialkylaluminiums", Makromol Chem 194: 3499-3504 (1993).

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