| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Polymerization of propylene with [t-BuNSiMe2Ind]TiMe 2-MAO catalyst systems |
|
言語 |
en |
| 作成者 |
Nishii, Kei
Ikeda, Tomiki
Akita, Munetaka
Shiono, Takeshi
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2005 Elsevier B.V |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Isotactic |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Metallocene catalysts |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Poly(propylene) (PP) |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Quasi-living polymerization |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
430 |
| 内容記述 |
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|
内容記述タイプ |
Other |
|
内容記述 |
ansa-Indenylamidodimethyltitanium complex ([t-BuNSiMe2Ind] TiMe2: 1) was synthesized by one-pot reactions starting from the ligand, MeLi and TiCl4. The structure of 1 was determined by X-ray crystallography and the results obtained revealed that the indenyl ligand coordinate to titanium in an η4-tendency. Propylene polymerization was conducted with 1 in toluene or heptane as solvent at 0°C in the presence of dried methylaluminoxane (MAO) or dried modified MAO (MMAO), which was prepared from the toluene solutions of MAO or MMAO by removing free trialkylaluminium contained. Polymerization behavior was investigated from the consumption rate of propylene in a semi-batch system. The dried MAO/toluene system showed the highest activity without any deactivation. The produced polymer in the dried MAO/toluene system had the highest molecular weight and narrowest molecular weight distribution. The number-average molecular weight of the polymer increased almost linearly with increasing polymerization time accompanied by narrowing molecular weight distribution from 1.42 to 1.37 and the number of polymer chains was almost constant. Thus, it was found that quasi-living polymerization of propylene proceeded. The 13C NMR measurement indicated that 1-dried MAO/toluene produced poly(propylene) with isotactic triad of 40%.0 |
| 出版者 |
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|
出版者 |
Elsevier |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AO |
|
出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1016/j.molcata.2004.12.035 |
| 収録物識別子 |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1381-1169 |
| 開始ページ |
|
|
開始ページ |
241 |
| 書誌情報 |
Journal of Molecular Catalysis A: Chemical
Journal of Molecular Catalysis A: Chemical
巻 231,
号 1-2,
p. 241-246,
発行日 2005-04
|
| 旧ID |
14675 |
JMolCatalA231_241.pdf (193.4 KB)
