Process for the preparation of substantially amorphous alpha-olefin polymers and compositions containing them and process for the preparation of bridged ligand

Abstract From the Canadian patent

Amorphous polymers of alpha-olefins, particularly of propylene having high , molecular weights and narrow molecular weight distributions in which the , isotactic sequences are more abundant than the syndiotactic ones can be , obtained in high yields at temperatures of industrial interest by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3position on the indenyl groups. The obtained amorphous polymers are particularly useful for the preparation of miscible compositions with substantially isotactic alpha-olefins.