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 |
Keywords
- Copolymerization
- Disubstituted diallylsilane
- Ethylene
- Zircnocene
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
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Naga, N. (2005). Synthesis of polyolefins containing silacycloalkane units in the main chain, 1 copolymerization of ethylene and disubstituted diallylsilanes involving intramolecular cyclization with zirconocene catalysts. Macromolecular Chemistry and Physics, 206(19), 1959-1966. https://doi.org/10.1002/macp.200500247