[EN] LIGANDS AND CATALYSTS FOR PRODUCING ELASTOMERIC PROPYLENE POLYMERS<br/>[FR] LIGANDS ET CATALYSEURS DESTINES A LA PRODUCTION DE POLYMERES DE PROPYLENE ELASTOMERES
申请人:BP AMOCO CORP
公开号:WO2000035975A1
公开(公告)日:2000-06-22
A ligand useful to form a metallocene olefin polymerization catalyst comprises formula (I), wherein at least R3 and R4 are substituents having at least a bulk of a t-butyl group and, optionally, wherein R1 or R2 may be a bulky substituent group.