| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Copolymerization of ethylene and hexene by dinuclear half-titanocenes having xylene bridge with MAO. |
| 초록 |
It was known that the nature of the bridge between two active sites exerted a significant influence on the catalytic properties of dinuclear metallocenes. We have prepared three dinuclear half-titanocenes [Ti(η5-cyclopentadienyl)Cl2L]2[CH2-C6H4-CH2] (L=2,6-iPr2C6H3) by treating 2 equivalents of aryl lithium salt with the corresponding chloride compounds. Using these complexes we conducted polymerization of ethylene and 1-hexene. It was found that all of these compounds were efficient catalysts for the polymerization of ethylene and 1-hexene. It was observed that activities of the catalysts having xylene bridge between two half-titanocenes were actually greater than those of the catalysts having polymethylene bridge. This result demonstrates that the rigidity of the bridge plays a major role to direct the activity of the dinuclear metallocenes. Amount of 1-hexene incorporation on polyethylene backbone has been investigated by the analysis of polymer microstructure. |
| 저자 |
김지윤1, 웽티레탄1, 팜나탄1, 구엔두바린1, 노석균1, 이동호2
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| 소속 |
1영남대, 2경북대 |
| 키워드 |
metallocene;copolymerization;Ethylene and 1-Hexene; xylene bridged |
| E-Mail |
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