Alternating Ring-Opening Metathesis Copolymerization of Norborn-2-ene with cis-Cyclooctene and Cyclopentene |
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| Authors: | Kati Vehlow Martin Lichtenheldt Dongren Wang Siegfried Blechert Michael R. Buchmeiser |
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| Affiliation: | 1. Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany;2. Lehrstuhl für Makromolekulare Stoffe und Faserchemie, Institut für Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany |
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| Abstract: | Ru-alkylidenes based on unsymmetrical imidazolin-2-ylidenes, were used for the alternating copolymerization of norborn-2-ene (NBE) with cis-cyclooctene (COE) and cyclopentene (CPE), respectively. Alternating copolymers, i.e., poly(NBE-alt-COE)n and poly(NBE-alt-CPE)n containing up to 97 and 91% alternating diads, respectively, were obtained. The copolymerization parameters of the alternating copolymerization of NBE with CPE under the action of different initiators were determined using a first order Markov model. Hydrogenation of poly(NBE-alt-COE)n yielded a fully saturated, hydrocarbon-based polymer. |
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| Keywords: | copolymerization polyolefins ring-opening metathesis polymerization synthesis |
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