<b>Polymerization of propene with <sup><i>t</i></sup>BuNSiMe<sub>2</sub>C<sub>5</sub>Me<sub>4</sub>TiMe<sub>2</sub>: Effects of trialkylaluminiums as additives</b>
oleh: E.O. Dare, D.S. Ogunniyi, G.A. Olatunji, P. Chattopadhyay
| Format: | Article |
|---|---|
| Diterbitkan: | Chemical Society of Ethiopia 2004-12-01 |
Deskripsi
Propene was polymerized at 0 <sup>o</sup>C with <sup><i>t</i> </sup>BuNSiMe<sub>2</sub>C<sub>5</sub>Me<sub>4</sub>TiMe<sub>2</sub>.Kinetic features and other parameters indicated quasi-living polymerization. Effects of various trialkylaluminiums as additives have been investigated; it was found that compounds with more bulky groups like <sup><i>i</i></sup>Bu<sub>3</sub>Al, Oct<sub>3</sub>Al increased the activities significantly whereas Me<sub>3</sub>Al and Et<sub>3</sub>Al reduced the activities of the catalyst system. The triad sequence in the <sup>13</sup>C NMR spectrum confirmed a syndiotactic-enriched atactic polypropene.