Process for the preparation of ethylene (co)polymers

Details Process for the preparation of ethylene (co)polymers Process for the preparation of ethylene (co)polymers

1992-08-05

1994-03-08

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526113, 526118, 526119, 526124, 5263486, 526352, 502113, C08F 464

Patent

active

052928373

ABSTRACT:
For the homopolymerization of ethylene or for the copolymerization of ethylene with other 1-olefins, a catalyst is used which comprises a trialkylaluminum compound and the entire product from the reaction of a magnesium alkoxide which is dissolved, suspended or dispersed as a gel in an inert solvent, with a tetravalent transition-metal compound and an organoaluminum compound, washing with an inert solvent and reacting with a halogenated metal compound. A polymer having coarse particles and a high bulk density is obtained.

REFERENCES:
patent: 4245071 (1981-01-01), Kondo et al.
patent: 4253984 (1981-03-01), Imai et al.
patent: 4364851 (1982-12-01), Shiga et al.
patent: 4390671 (1983-06-01), Imai et al.
patent: 4562170 (1985-12-01), Graves
patent: 4716206 (1987-12-01), Fujita et al.
patent: 4859749 (1989-08-01), Franke
Derwent Abstract of DE 3325221 (laid open Jan. 24, 1985).

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