Synthesis of Brominated Polyethylene by Copolymerization of Ethylene with ω–bromoalkene Catalyzed by a Metallocene and Methylaluminoxane System
| Autor: | Itaru Miura, Tomoyuki Toda, Katsuhiko Takenaka, Masamitsu Miya |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Ethylene
Catalytic complex Methylaluminoxane methylaluminoxane brominated PE 02 engineering and technology 010402 general chemistry lcsh:Chemical technology 01 natural sciences Catalysis law.invention lcsh:Chemistry chemistry.chemical_compound Magazine law Polymer chemistry Copolymer lcsh:TP1-1185 Physical and Theoretical Chemistry metallocene ω-bromoalkene Polyethylene 021001 nanoscience & nanotechnology 0104 chemical sciences copolymerization chemistry lcsh:QD1-999 0210 nano-technology Metallocene |
| Zdroj: | Catalysts, Vol 9, Iss 8, p 660 (2019) |
| ISSN: | 2073-4344 |
| Popis: | The metallocene-catalyzed copolymerization of ethylene and 11−bromo−1−undecene was carried out to synthesize brominated polyethylene (PE). A modified methylaluminoxane (MMAO) solution was used as a cocatalyst and rac−Et(H4Ind)2ZrCl2 as a catalyst. The copolymerization showed a high activity and afforded the copolymer with a 11-bromo-1-undecene incorporation ranging from 1.0 to 4.3 mol%. When using a dried methylaluminoxane (dMAO) as a cocatalyst, the incorporation ratio of 11-bromo-1-undecene increased remarkably to 25.2 mol%. It was demonstrated that the type of MAO used as a cocatalyst affects the composition of the ethylene/11-bromo-1-undecene copolymer without changing the structure of the catalytic complex. |
| Databáze: | OpenAIRE |
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