Olefin polymerization

Details Olefin polymerization Olefin polymerization

1984-12-20

1986-03-11

Garvin, Patrick P.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525260, 525263, 526139, 526140, 526141, 526142, 526164, 502102, C08F 452

Patent

active

045755388

ABSTRACT:
A process for producing a novel-highly active lanthanide containing catalysts comprising products formed by reacting a lanthanide halide, and an electron doner ligand with an organometal cocatalyst component and its use in the polymerization of olefins, especially olefins such as ethylene, 1,3-butadiene, isoprene and the like. In one embodiment, an organic base is used to increase catalyst activity in those instances where rare earth metal halide-ligand complex is formed with a ligand containing an acidic proton. In another embodiment, diolefins and vinyl aromatics are polymerized in a two-stage process employing a lanthanide complex-organometal cocatalyst in the first stage and a free radical initiator in the second stage.

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