FI catalysts for olefin polymerization--a comprehensive treatment.

A catalyst precursor having formula (1) wherein M is a Group IVB metal; each L is a monovalent, bivalent, or trivalent anion; X and Y are each heteroatoms; each Cyclo is a cyclic moiety; each R1 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements, and two or more adjacent R1 groups may be joined to form a cyclic moiety; each R2 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements, and two or more adjacent R2 groups may be joined to form a cyclic moiety; W is a bridging group; and each m is independently an integer from 0 to 5.

Catalyst for the production of olefin polymers

Zirconium Complexes of Amine−Bis(phenolate) Ligands as Catalysts for 1-Hexene Polymerization: Peripheral Structural Parameters Strongly Affect Reactivity

Auch Komplexe spater Ubergangsmetalle sind aktive und selektive Katalysatoren fur die Polymerisation von α-Olefinen. Die Entdeckung einer Klasse hochaktiver Eisenkatalysatoren 1 beleuchtet, angesichts der Tatsache, das Eisen auf diesem Gebiet bis dahin vollig bedeutungslos war, die Moglichkeiten zur Entdeckung neuer Katalysatoren. Entdeckungen wie diese losten in den letzten Jahren sowohl in Universitats- als auch in Industrielaboratorien eine intensive Suche nach neuen Katalysatoren aus. R1 = H, Me; R2 = Me, iPr; R3 = H, Me, iPr; R4 = H, Me; X = Halogen.

Auf der Suche nach einer neuen Generation von Katalysatoren zur Olefinpolymerisation: „Leben”︁ jenseits der Metallocene

Reaction of {2,6-bis[2,6-(i-Pr)2PhNC(Me)]2(C5H3N)}VCl3·1.3(CH2Cl2) (1) with stoichiometric amount of methyl alumoxane (PMAO) in toluene resulted in the methylation of the pyridine ring ortho positi...

Life and Death of an Active Ethylene Polymerization Catalyst. Ligand Involvement in Catalyst Activation and Deactivation. Isolation and Characterization of Two Unprecedented Neutral and Anionic Vanadium(I) Alkyls

Xiaohong Bei

Papers

Synthesis, Structures, Bonding, and Ethylene Reactivity of Group 4 Metal Alkyl Complexes Incorporating 8-Quinolinolato Ligands

Formation of novel ansa-carborane-alkoxide complexes by carbonylation of (C5Me5)(η5-C2B9H 11)TiMe