このエントリーをはてなブックマークに追加
ID 30776
本文ファイル
著者
Tada, Tomoyuki
Cai, Zhengguo
Nakayama, Yuushou
キーワード
chain transfer
copolymerization
ethylene
metallocene catalysts
norbornene
polyolefins
synthesis
NDC
化学
内容記述
Ethylene/norbornene copolymerizations were conducted with [Ph_2C(Flu)(3-RCp)]ZrCl_2 [R: Me (1) or Me_3Si (2)], which give alternating EN copolymers. The activity of 1 in the absence of R_3Al was approximately twice that of 2 and increased further upon addition of R_3Al. Et_3Al increased the activity most effectively, and the M^^-_n of the produced polymer decreased from 100 000 to 25 000 g.mol^<-1>. On the other hand, the M^^-_n value increased upon addition of (Bu_3Al)-Bu-i from 100 000 to 209 000 g.mol^<-1> accompanied by an approximate to 2.5-fold increase of activity. Consequently, 1 was found to be one of the most promising complexes for the synthesis of alternating EN copolymers, of which M^^-_n value was efficiently controlled by the kind and the amount of R_3Al added.
掲載誌名
Macromolecular Chemistry and Physics
211巻
19号
開始ページ
2132
終了ページ
2137
出版年月日
2010
出版者
Wiley-VCH Verlag GmbH
ISSN
1022-1352
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
関連情報URL
部局名
工学研究科