| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 08.99 |
| PATENT ASSIGNEE | Mobil Oil (Fairfax; Va) |
| PATENT CLAIMS |
Catalyst compn comprising catalyst precursor (I) & trialkyl-Al cocatalyst to activate (I); wherein (I) comprises - Silica having 0.4-0.9 mmol -OH/gr of silica - Bibutyl-Mg compd in amount such that (Mg)/(OH) = 1:1-4:1 - Tetra-Et orthosilicate (II) to provide (II)/(Mg) = 0.4-1.0 - TiCl4 such that (Ti)/(Mg) = 0.7-1.4 |
| PATENT PHOTOCOPY | Available on request |
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