Abstract: Mixed metallocene catalyst systems may comprise an activator, a first metallocene having a structure represented by Formula 1, and a second metallocene different from the first metallocene. M is a Group 4 metal, T is a bridging group, X1 and X2 are each a univalent anionic ligand or optionally joined together to define a metallocycle ring or similar, J1 and J2 are each H or J1 and J2 are joined together to form a cyclic or polycyclic ring structure, and R1, R2, and R8 are preferably independently H, optionally substituted C1-C40 alkyl, or optionally substituted C6-C14 aryl. R3 is a bulky alkyl group, such as an optionally substituted cyclohexyl, norbornanyl, adamantyl, or t-butyl, or an optionally substituted aryl group, such as an optionally substituted phenyl group. The second metallocene may have C2 symmetry or pseudo-C2 symmetry. The catalyst systems may afford polyolefins having a high degree of vinyl termination.

Abstract: The present disclosure provides aromatic-solvent-free supported catalyst compounds and catalyst systems comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. These supported catalyst compounds and catalyst systems can be used to prepare polymer comprising no aromatic solvent.

Abstract: A catalyst compound and process for olefin polymerization.

Abstract: A catalyst compound and process for olefin polymerization.