Process for preparing alpha-olefin copolymers having a narrow MW

Details Process for preparing alpha-olefin copolymers having a narrow MW Process for preparing alpha-olefin copolymers having a narrow MW

1991-09-25

1993-03-02

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5261692, 526281, 526282, 526336, C08F 204, C08F23620

Patent

active

051910420

ABSTRACT:
The present invention is directed toward novel copolymers of ethylene and at least one other alpha-olefin monomer which copolymers have an intermolecular compositional distribution (CD), such that at least about 25% by weight of the polymer differs from the mean ethylene content of the polymer by at least plus or minus 5 wt % ethylene and a relatively narrow molecular weight distribution (MWD) such that the weight average molecular weight (Mw) of the polymer divided by the number average molecular weight (Mn) by the polymer is not greater than about 5.0.
The polymers of this invention, which are characterized by exceptional green strength and good processing properties, may be prepared using a catalyst system comprising:

REFERENCES:
patent: 3000866 (1961-09-01), Tarney
patent: 3301834 (1967-01-01), Christman
patent: 3349064 (1967-10-01), Gumboldt et al.
patent: 3489729 (1970-01-01), Kahle et al.
patent: 4540753 (1985-09-01), Cozewith et al.
Liquid Chromatography of Polymers and Related Materials III, J. Cazes editor, Marcel Dekker, 1981, 207-235.
Journal of the American Chemical Society, 95, 4158-4162 (1973), T. A. Cooper.

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