Direct conversion of a polymerization reaction catalyzed by a Zi

Details Direct conversion of a polymerization reaction catalyzed by a Zi Direct conversion of a polymerization reaction catalyzed by a Zi

1982-10-28

1984-07-17

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 79, C08F 234

Patent

active

044607555

ABSTRACT:
A method of converting a continuous olefin polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst, without the need of emptying and recharging the polymerization reactor, by adding a hydroxyl-containing compound to the reactor containing the Ziegler-type catalyst to interact with such catalyst before the chromium-based catalyst is introduced into the reactor.

REFERENCES:
patent: 2825721 (1958-03-01), Hogan et al.
patent: 3023203 (1962-02-01), Dye
patent: 3298792 (1967-01-01), DiDrusco
patent: 3324101 (1967-06-01), Baker et al.
patent: 3622521 (1971-11-01), Hogan et al.
patent: 3709853 (1973-01-01), Karapinka
patent: 4011382 (1977-03-01), Levine et al.

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