Catalyst composition for copolymerizing ethylene

Details Catalyst composition for copolymerizing ethylene Catalyst composition for copolymerizing ethylene

1981-11-23

1983-01-25

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 5263486, 526901, C08F 402, C08F 1002

Patent

active

043704565

ABSTRACT:
Ethylene copolymers having improved resistance to pinstriping and gel streaking when extruded into film can be produced by continuously copolymerizing ethylene with one or more higher alpha olefin monomers in a low pressure gas phase reaction with a catalyst composition prepared by forming a precursor composition from a magnesium compound, titanium compound, and electron donor compound; diluting said precursor composition with a silica support which has been treated with a dialkylzinc compound; and activating the diluted precursor composition with an organoaluminum compound.

REFERENCES:
patent: 4302566 (1982-11-01), Karol et al.
patent: 4308369 (1981-12-01), Shipley et al.

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