| 摘要 |
<p>A process comprising polymerising olefins in the presence of a polymerisation catalyst and a cocatalyst wherein said cocatalyst is prepared in a process comprising forming a mixture of a chromium compound, metal amide and ether; wherein said polymerisation catalyst is a supported chromium catalyst containing titanium, carried out by means of suspension in the hydrogen atmosphere in the range from 66 to 110 degrees Celsius.</p> |
