Dimeric and tetrameric cyclopentadienyl group 6b metal alpha-ole

Details Dimeric and tetrameric cyclopentadienyl group 6b metal alpha-ole Dimeric and tetrameric cyclopentadienyl group 6b metal alpha-ole

1993-05-13

1994-04-12

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526113, 526160, 526169, 526352, 502117, 502155, C08F 422

Patent

active

053026748

ABSTRACT:
Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a dimeric or tetrameric cyclopentadienyl Group 6b metal compound in which the metal has an oxidation state of +2, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound cocatalyst.

REFERENCES:
patent: 3849459 (1974-11-01), Maitlis et al.
patent: 4806513 (1989-02-01), McDaniel et al.
Heintz, R. A. et al., Angew. Chem. Int. Engl. 1992, 31, No. 8, pp. 1077-1079.

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