摘要:
Use of homogeneous catalytic systems which include as a pre-catalyst a complex of a Group IV metal and a salalen ligand in the polymerization of alpha-olefins, is disclosed. The alpha-olefin polymers obtained are characterized by controlled levels of tacticity. Also disclosed are novel salalen ligands and novel complexes thereof with Group IV metals.
摘要:
A cyclopentadienyl-substituted Salan catalyst, a catalyst system comprising an activator and the cyclopentadienyl-substituted Salan catalyst, a process comprising contacting one or more olefins with the catalyst system, and polymers produced by the process are disclosed herein. The instant disclosure is directed to catalyst compounds and catalyst systems comprising such compounds, processes for the preparation of the catalyst compounds and systems, and processes for the polymerization of olefins using such catalyst compounds and systems.
摘要:
Catalysts comprising salan ligands with carbazole moieties. Also, catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and the olefin polymers prepared according to the processes.
摘要:
Polyalphaolefins and Salan cataylsts, catalyst systems, and processes to produce the polyalphaolefins. Also disclosed are high-viscosity index polyalphaolefins and processes for producing them.
摘要:
Catalysts comprising a halogenated Salan ligand. Also disclosed are catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and the olefin polymers prepared according to the processes.