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http://dx.doi.org/10.7473/EC.2011.46.4.304

Preparation of Reactive Poly(ethylene-ter-1-hexene-ter-divinylbenzene) using Metallocene Catalysts  

Kim, Dong-Hyun (Green Process and Material R&D Group, Korea Institute of Industrial Technology)
Publication Information
Elastomers and Composites / v.46, no.4, 2011 , pp. 304-310 More about this Journal
Abstract
In this study, we prepared poly(ethylene-ter-1-hexene-ter-divinylbenzene) using briged rac-$Et[Ind]_2ZrCl_2$ or unbriged $Cp_2ZrCl_2$ metallocene catalysts. Bridged rac-$Et[Ind]_2ZrCl_2$ catalyst showed relatively good results compared with unbridged one. When cocatalyst/catalyst molar ratio was 3000, catalytic activity indicated more than 8000(kg of polymer/$mol{\cdot}h$) which was very remarkable value. As a polymerization time increased, the weight-average molecular weight of the terpolymer gradually increased to some degree. In the case of a polymerization time of 50 minutes, the state of the terpolymer became amorphous. The range of the weight-average molecular weight and the densities of the terpolymer was 110,000~200,000 and $0.85{\sim}0.89g/cm^3$, respectively. The thermal properties and the structure of the terpolymer were also identified.
Keywords
Terpolymer; Metallocene; Coordination; Ethylene; 1-Hexene; Divinylbenzene;
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