Process for forming a catalyst precursor for copolymerizing ethy

Details Process for forming a catalyst precursor for copolymerizing ethy Process for forming a catalyst precursor for copolymerizing ethy

1998-01-21

1999-11-30

Bell, Mark L.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502103, 502105, 502110, 502115, 502120, 502125, 502127, 5261249, 526129, B01J 3100, B01J 3700, C08F 402, C08F 460, C08F 444

Patent

active

059942568

ABSTRACT:
A process is described for forming a catalyst precursor, for copolymerizing ethylene and an alpha-olefin of 3 to 10 carbon atoms, by preparing a contact mixture of an inert solvent, dibutylmagnesium and tetraalkyl orthosilicate which is free of precipitate and adding silica to the contact mixture to form a slurry to form a supported catalyst precursor. Titanium tetrachloride is then incorporated into the support in a specific ratio to the magnesium and silane components. Activation of this catalyst precursor with a trialkylaluminum compound results in a catalyst system which is effective for the production of ethylene copolymers.

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