Copolymerizations of Ethylene with 1-Hexene over ansa-Metallocene Diamide Complexes
|
 |
|
Post a Comment
|
|
|
|
|
CONTRIBUTORS:
|
|
|
JOURNAL:
|
http://www.polymer.or.kr/mr/,
12(3),
316 -
321.
|
|
|
|
YEAR:
|
2004
|
|
PUB TYPE:
|
Journal Article
|
|
SUBJECT(S):
|
Polymer, Chemistry, organometallics, catalysis
|
|
DISCIPLINE:
|
Chemistry
|
|
HTTP:
|
http://www.polymer.or.kr/mr/
|
|
LANGUAGE:
|
English
|
|
PUB ID:
|
103-438-954
(Last edited on
2007/12/01 12:50:31 US/Mountain)
|
|
SPONSOR(S):
|
|
|
ABSTRACT:
We have performed copolymerizations of ethylene with 1-hexene using various ansa-metallocene compounds in the presence of the non-coordinative [CPh3][B(C6F5)4] ion pair as a cocatalyst. The metallocenes
chosen for this study are isospecific metallocene diamide compounds, rac-(EBI)Zr(NMe2)2 [1, EBI = ethylene-1,2-
bis(1-indenyl)], rac-(EBI)Hf(NMe2)2 (2), rac-(EBI)Zr(NC4H8)2 (3), and rac-(CH3)2Si(1-C5H2-2-CH3-4-tC4H9)2
Zr(NMe2)2 (4), and syndiospecific metallocene dimethyl compounds, ethylidene(cyclopentadienyl)(9-fluorenyl)
ZrMe2 [5, Et(Flu)(Cp)ZrMe2] and isopropylidene(cyclopentadienyl)(9-fluorenyl)ZrMe2 [6, iPr(Flu)(Cp)ZrMe2].The copolymerization rate decreased in the order 4 > 1 ~ 3 > 2 > 5 > 6. The reactivity of 1-hexene decreased in the order 2 > 6 > 1 ~ 3 ~ 5 > 4. We characterized the microstructure of the resulting poly(ethylene-co-1-hexene) by 13C NMR spectroscopy and investigated various other properties of the copolymers in detail.
|
|
|
|
STATISTICS
|
|
Click on # to view
|
|
Citations
|
|
0
|
|
References
|
|
0
|
|
Comments
|
|
0
|
|
Quality
|
|
0/0.00
|
|
Interest
|
|
0/0.00
|
|
View(er)s
|
|
1/249
|
|
|
|
|
|
|
| Prev |
Next |
|