Polymerization and catalyst

Details Polymerization and catalyst Polymerization and catalyst

1984-10-01

1985-09-10

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502105, 502111, 502115, 502116, 502120, 526125, 526129, 526352, 526906, C08F 402, C08F 1002

Patent

active

045407576

ABSTRACT:
Polymerization of olefins in the presence of a catalyst system comprising titanium-containing component (A) associated with a milled blend of at least two different silica-containing materials having different MI (polymer melt index) potentials in which at least one of the silicas has been treated with a chemical agent which reacts with OH groups on the surface of the silica and a dihydrocarbylmagnesium compound, and a cocatalyst component (B) comprising an organoaluminum compound. Ethylene polymers having broad molecular weight distribution are obtained using the catalysts defined herein.

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patent: 4455386 (1984-06-01), Lynch et al.
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