Olefin polymerization

Details Olefin polymerization Olefin polymerization

1991-03-04

1992-05-05

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502102, 502113, 526352, C08F 4643, C08F 4646

Patent

active

051108844

ABSTRACT:
High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50. In another catalyst system the organo lithium compound is combined with a rare earth metal halide. For best results these catalyst systems are employed at pressures of at least about 100 psi. In ethylene polymerization an ethylene partial pressure of at least about 100 psi is preferred.

REFERENCES:
patent: 3429864 (1969-02-01), Stapp
patent: 4384982 (1983-05-01), Martin
patent: 4524195 (1985-06-01), Martin

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