Polymerization of ethylene with a catalyst comprising several tr

Details Polymerization of ethylene with a catalyst comprising several tr Polymerization of ethylene with a catalyst comprising several tr

1983-03-22

1984-12-18

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 65, 526116, 526348, 526352, 526906, C08F 464, C08F 1002

Patent

active

044891989

ABSTRACT:
A process for polymerizing ethylene in the presence of a catalyst system comprising at least two halogen compounds of transition metals, one of which has the formula (TiCl.sub.3,Y3 AlCl.sub.3)(MY.sub.3).sub.x (MgYZ).sub.y, where M is a transition metal of Group VB or V1B, X is a halogen and 0.3.ltoreq.x.ltoreq.3, 0.ltoreq.y.ltoreq.20, and a Group I to III hydryde or organometallic activator and the mean residence time of the catalyst system in the polymerization reactor is between 2 and 100 seconds.

REFERENCES:
patent: 3325424 (1967-06-01), Tornqvist et al.
patent: 4133944 (1979-01-01), Cooper et al.
patent: 4298717 (1981-11-01), Machon

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