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Soluble polyimides from unsymmetrical diamine containing benzimidazole ring and trifluoromethyl pendent group Choi, Hyungsam; Chung, Im Sik; Hong, Kipyo; Park, Chan Eon; Kim, Sang Youl, POLYMER, v.49, no.11, pp.2644 - 2649, 2008-05 |
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