Synthesis and properties of elastic polyurethane‐imide |
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| Authors: | Tetsuya Kogiso Shin‐Ichi Inoue |
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| Affiliation: | Department of Applied Chemistry, Aichi Institute of Technology, 1247 Yachigusa, Yakusa‐cho, Toyota‐shi, Aichi 470‐0392, Japan |
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| Abstract: | A new synthesis route for elastic polyurethane‐imides (EPUIs) has been established by a method involving the use of urea. Various EPUIs were synthesized from polyurethane‐urea, which was prepared from 4,4′‐diphenylmethane diisocyanate (MDI), polyoxytetramethylene glycol (PTMG) and 4,4′‐diphenylmethanediamine (MDA), and pyromellitic dianhydride in N‐methyl‐2‐pyrrolidone (NMP). Flexible films were cast from these solutions that had different inherent viscosities. Imidization of the EPUI films was completed at 200°C for 4 h in vacuo. The EPUIs were determined by FTIR, 1H NMR, and 13C NMR spectra. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 |
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| Keywords: | Polyurethane‐imide Polyurethane‐urea Polyurea method |
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