Abstract
Copolymerizations of ethylene and disubstituted diallylsilanes (CH 2=CH-CH2)2R2Si (R = CH3, C6H5) have been investigated with various zirconocene catalysts using methylaluminoxane as a cocatalyst. The bridged stereospecific catalysts showed a higher reactivity for disubstituted diallylsilanes than the non-bridged aspecific catalysts, Disubstituted diallylsilanes were incorporated into the polymer chain via cyclization insertion preferentially, and formed 3,5-disubstituted silacyclohexane units in the polyethylene main chain. A zirconocene catalyst, dimethylsilylenebis(indenyl)zirconium dichloride, produced a copolymer containing pendant ullyl groups derived from the 1,2-insertion of diallyldiphenylsilane without cyclization.
| Original language | English |
|---|---|
| Pages (from-to) | 1959-1966 |
| Number of pages | 8 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 206 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2005 Oct 6 |
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Keywords
- Copolymerization
- Disubstituted diallylsilane
- Ethylene
- Zircnocene
ASJC Scopus subject areas
- Polymers and Plastics
- Materials Chemistry
- Organic Chemistry
- Physical and Theoretical Chemistry
Cite this
Synthesis of polyolefins containing silacycloalkane units in the main chain, 1 copolymerization of ethylene and disubstituted diallylsilanes involving intramolecular cyclization with zirconocene catalysts. / Naga, Naofumi.
In: Macromolecular Chemistry and Physics, Vol. 206, No. 19, 06.10.2005, p. 1959-1966.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis of polyolefins containing silacycloalkane units in the main chain, 1 copolymerization of ethylene and disubstituted diallylsilanes involving intramolecular cyclization with zirconocene catalysts
AU - Naga, Naofumi
PY - 2005/10/6
Y1 - 2005/10/6
N2 - Copolymerizations of ethylene and disubstituted diallylsilanes (CH 2=CH-CH2)2R2Si (R = CH3, C6H5) have been investigated with various zirconocene catalysts using methylaluminoxane as a cocatalyst. The bridged stereospecific catalysts showed a higher reactivity for disubstituted diallylsilanes than the non-bridged aspecific catalysts, Disubstituted diallylsilanes were incorporated into the polymer chain via cyclization insertion preferentially, and formed 3,5-disubstituted silacyclohexane units in the polyethylene main chain. A zirconocene catalyst, dimethylsilylenebis(indenyl)zirconium dichloride, produced a copolymer containing pendant ullyl groups derived from the 1,2-insertion of diallyldiphenylsilane without cyclization.
AB - Copolymerizations of ethylene and disubstituted diallylsilanes (CH 2=CH-CH2)2R2Si (R = CH3, C6H5) have been investigated with various zirconocene catalysts using methylaluminoxane as a cocatalyst. The bridged stereospecific catalysts showed a higher reactivity for disubstituted diallylsilanes than the non-bridged aspecific catalysts, Disubstituted diallylsilanes were incorporated into the polymer chain via cyclization insertion preferentially, and formed 3,5-disubstituted silacyclohexane units in the polyethylene main chain. A zirconocene catalyst, dimethylsilylenebis(indenyl)zirconium dichloride, produced a copolymer containing pendant ullyl groups derived from the 1,2-insertion of diallyldiphenylsilane without cyclization.
KW - Copolymerization
KW - Disubstituted diallylsilane
KW - Ethylene
KW - Zircnocene
UR - http://www.scopus.com/inward/record.url?scp=27344444139&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27344444139&partnerID=8YFLogxK
U2 - 10.1002/macp.200500247
DO - 10.1002/macp.200500247
M3 - Article
AN - SCOPUS:27344444139
VL - 206
SP - 1959
EP - 1966
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
SN - 1022-1352
IS - 19
ER -