97722 ⎘
Polymerisation catalysts; Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof; Refractory metals or compounds thereof; Catalysts comprising at least two different metals, in metallic form or as compounds thereof, in addition to the component covered by group containing silicium