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8264125 
Journal Article 
反式聚环戊烯橡胶合成及结构分析 
He, X; Qiu, Y; Wang, X; Cao, D; Chen, J; Bu, S; Luo, J 
2020 
Beijing University of Chemical Technology 
47 
4 
45-51 
Chinese 
The synthesis of trans-polycyclopentene rubber (TPR) has been studied and the effects of varying the preparation of the tungsten-based catalyst and the polymerization conditions were investigated. The catalyst exhibited high activity and stability after aging. Toluene and n-hexane were suitable solvents for cyclopentene polymerization. When the catalyst loading was (2.5-3.5)×10-6 molW/g monomer, the molar ratio of molecular weight regulator (n-butene)/W was 2-3 and the triisobutyl-aluminium/W ratio was 1-3, the monomer conversion rate reached a maximum of 78%, the TPR trans-structure content was about 85%, the glass transition temperature was lower than -92℃, the number average molecular weight was in the range 100 000-300 000 and the relative molecular mass distribution was in the range 1.5-2.5. These meet the structure and molecular weight requirements for rubber for general. © 2020, Editorial Board of Journal of Beijing University of Chemical Technology (Natural Science Edition). All right reserved. 
Activator; Aging; Catalyst; Molecular weight regulator; Trans-polycyclopentene rubber