Poly‐2‐oxazolidones with tailored physical properties synthesized by catalyzed polyaddition of 2,4‐toluene diisocyanate and different bisphenol‐based diepoxides |
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| Authors: | Angelina Prokofyeva Hannah Laurenzen Dirk J Dijkstra Elena Frick Annette M Schmidt Christoph Guertler Carsten Koopmans Aurel Wolf |
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| Affiliation: | 1. Covestro Germany AG, Leverkusen, Germany;2. Institute for Physical Chemistry, Chemistry Department, University of Cologne, Cologne, Germany |
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| Abstract: | In the current study, we investigated poly‐2‐oxazolidones containing one of four different diglycidyl ethers carrying different bulky bisphenol centers. With increasing steric hindrance of the bisphenol‐based diepoxide from bisphenol F to bisphenol A, Z and TMC, the glass transition temperature (Tg) increased markedly from 156 to 211 °C, whereas the plateau modulus of the polymer, i.e. the chain flexibility as determined from rheological characterization, remained almost unchanged. This study demonstrates the general feasibility of the chemical design of poly‐2‐oxazolidones as an amorphous high‐performance thermoplastic. © 2016 Society of Chemical Industry |
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| Keywords: | poly‐2‐oxazolidone polyaddition 2,4‐toluene diisocyanate bisphenol diglycidyl ethers thermal stability |
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