Use of dialkylzinc compounds to initiate polymerization of ethyl

Details Use of dialkylzinc compounds to initiate polymerization of ethyl Use of dialkylzinc compounds to initiate polymerization of ethyl

1981-10-01

1983-03-08

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252430, 5263486, C08F 478

Patent

active

043761917

ABSTRACT:
A method for initiating polymerization of ethylene in a fluidized bed reactor employing a supported chromium oxide as catalyst in a smooth and controlled manner, and for reducing the start-up time required to initiate such polymerization, by adding a dialkylzinc compound to the reactor prior to the commencement of polymerization and subjecting the reactor containing such dialkylzinc compound to conditions conventionally employed in the polymerization of ethylene with such catalyst.

REFERENCES:
patent: 2825721 (1958-03-01), Hogan et al.
patent: 3023203 (1962-02-01), Dye
patent: 3298792 (1967-01-01), Di Drusco
patent: 3622521 (1971-11-01), Hogan et al.
patent: 3984351 (1976-10-01), Rekers et al.
patent: 4011382 (1977-03-01), Levine et al.

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