抄録
Copolymerization of ethylene or propylene and norbornene (NB) was carried out with stereospecific zirconocene catalysts rac-ethylenebis(indenyl)zirconium dichloride, rac-dimethylsilylenebis(indenyl)zirconium dichloride (2), rac-dimethyl-silylenebis(2-methylindenyl)zirconium dichloride, and diphenylmethylene(cyclopentadienyl)(9-fluorenyl)zirconium dichloride combined with cocatalysts at 40°C. Temperature-rising elution fractional of the copolymers was carried out with cross-fractionation chromatography with o-dichlorobenzene as a solvent, and a broad distribution of the copolymer composition was detected. The fraction eluted at lower temperature contained higher NB. The effect of the polymerization time was examined in the ethylene-NB copolymerization with catalyst 2, and the higher-temperature elution fraction increased with increasing polymerization time.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 441-448 |
| ページ数 | 8 |
| ジャーナル | Journal of Polymer Science, Part A: Polymer Chemistry |
| 巻 | 41 |
| 号 | 3 |
| DOI | |
| 出版ステータス | Published - 2003 2月 1 |
| 外部発表 | はい |
ASJC Scopus subject areas
- ポリマーおよびプラスチック
- 有機化学
- 材料化学