Ziegler Catalysts: Recent Scientific Innovations and Technological Improvements |
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Contents | 1 |
Binuclear Titanocene and Zirconocene Cations with μCl | 10 |
Marczinke B 363 | 15 |
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13C NMR a-olefins active centers active species agostic interaction AlCl3 aluminumtrimethyl Amer Chem Soc atoms bond Brintzinger HH calculations carbon catalyst system Chien JCW chiral cm³ cocatalyst comonomer complex compounds concentration coordination copolymerization copolymers Corradini cyclopentadienyl cyclopolymerization energy ethene ethylene ethylene insertion Ewen external donor forcefield fraction growing chain homopolymer hydrogen isospecific isotactic Kaminsky Karl Ziegler kcal/mol kinetic Lewis base ligand Macromolecules Makromol Chem mechanism melting point metallocene catalysts methyl group MgCl2 microstructure mmol mol/l molecular mass molecular weight molecule monomer Natta norbornene olefin polymerization Organomet Chem Organometallics parameters patent pentad phase poly polyethylene Polym Sci polymer polymer chain Polymerization conditions polyolefins polypropylene produced propene propylene propylene polymerization racemic ratio reaction reactor ring shown in Fig Soga solution solvent stereoregular stereoselectivity stereospecificity steric structure substituents syndiotactic Table temperature TiCl4 titanium toluene transition metal Zambelli Ziegler catalysts zirconocene ZrCl2