Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1994-06-10
1996-05-07
Achutamurthy, Ponnathapura
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502120, B01J 3100, B01J 3700
Patent
active
055146341
ABSTRACT:
An ethylene polymerization catalyst is prepared by impregnating a porous support, such as silica, with an organomagnesium compound such as a dialkylmagnesium compound, contacting the magnesium-containing support with a silane compound which is free of hydroxyl groups, such as tetraalkoxysilanes, e.g. tetraethyl orthosilicate, and incorporating a transition metal component, such as titanium tetrachloride, in a specific ratio to the magnesium and silane components. Activation of this catalyst precursor with dimethylaluminum chloride as a cocatalyst results in a catalyst system which is effective for the production of ethylene copolymers with multimodal molecular weight distributions.
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WO 93/09147; Nowlin, Thomas; High Activity Polyethylene Catalysts Prepared With Alkoxysilane Reagents, May/1993.
Hagerty Robert O.
Husby Per K.
Kissin Yury V.
Mink Robert I.
Nowlin Thomas E.
Achutamurthy Ponnathapura
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Schneller Marina V.
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