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Raghu, A.V.,Jeong, Han-Mo,Kim, Jae-Hoon,Lee, Yu-Rok,Cho, Youn-Bok,Sirsalmath, Kiran The Polymer Society of Korea 2008 Macromolecular Research Vol.16 No.3
Four novel polyurethanes were prepared from 4-{(4-hydroxyphenyl)iminomethyl} phenol by reactions with two aromatic diisocyanates, 4,4'-diphenylmethane diisocyanate and toluene 2,4-diisocyanate, and two aliphatic diisocyanates, isophorone diisocyanate and hexamethylene diisocyanate. The polyurethanes formed were characterized by UV-vis, fluorescence, FT-IR, $^1H$-NMR, $^{13}C$-NMR, differential scanning calorimetry, thermogravimetry, and X-ray diffraction. The polymers were semi-crystalline and all polymers were soluble in polar aprotic solvents.