Method of polymerizing olefins

Details Method of polymerizing olefins Method of polymerizing olefins

1974-03-18

1976-11-30

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 526153, 526352, 526904, C08F 466, C08F 1002

Patent

active

039950980

ABSTRACT:
The method of polymerizing olefins which includes the preparation of a pre-activated compound of a transition metal of IVa, Va and VIa of the periodic table of elements, in which the transition metal is at least partially in a reduced valency state, in which the pre-activation is carried out by contacting the transition metal compound with an organomagnesium compound and then polymerizing the olefins in the presence of the pre-activated transition metal compound and an organo-aluminum compound.

REFERENCES:
patent: 2954367 (1960-09-01), Vandenberg
patent: 3058963 (1962-10-01), Vandenberg
patent: 3058970 (1962-10-01), Rust et al.
patent: 3118865 (1964-01-01), Bruce et al.
patent: 3201192 (1965-08-01), Siggel et al.
patent: 3392159 (1968-07-01), Schooley et al.
patent: 3461083 (1969-08-01), Luciani et al.

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