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Hex-1-ene (hexene), 4-methylpent-1-ene (4-MP-1) and 3-methylpent-1-ene (3-MP-1), homopolymerizations were conducted by using metallocenes, En(Ind) 2 ZrCl 2 and iPr(Cp)(Flu)ZrCl 2 , with methylaluminoxane. 1 H NMR analyses of the resulting polymers were carried out to identify the unsaturated structures of these polymers. In polyhexene and poly(4-MP-1), the detected...
In this study, insertion reaction of 10-undecen-1-ol (Un-OH) into the metallocene active center was investigated in the absence of olefin monomers. 10-Undecen-1-ol protected with trialkylaluminum (Un-O-AlR 2 ; R=Me, Et, n-Bu, i-Bu) was treated with an En(Ind) 2 ZrCl 2 /MAO catalyst system. The reactant, after quenched with HCl, was analyzed to identify the resulting alcohol...
Propylene homopolymerizations were conducted by using three kinds of metallocenes: Cp 2 ZrCl 2 , En(Ind) 2 ZrCl 2 and iPr(Cp)(Flu)ZrCl 2 , all of which were activated with methylaluminoxane. Detailed NMR analyses of the chain ends in the resulting polymers were carried out to discuss the chain end structures of the polypropylenes and the mechanism of polymerization...
The vinylidene structures in polypropylenes produced by ethylenebis(indenyl)zirconiumdichloride (En(Ind) 2 ZrCl 2 ), 1, and isopropyl(cyclopentadienyl)(fluorenyl)zirconiumdichloride (iPr(Cp)(Flu)ZrCl 2 ), 2, were analyzed by 1 H NMR. The vinylidene group adjacent to the chain end was clearly distinguished from other internal vinylidene structures for the first time...
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