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Synthesis, characterization, and properties of novel poly(ether urea)s

机译:新型聚醚脲的合成,表征与性能

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Two diamines, 2,6-bis(4-aminophelioxy)pyridine and 2,6-bis(5-amino-1-naphenoxy)pyridine, were prepared through the nucleophilic aromatic substitution reaction of 4-aminophenol and 5-amino- l-naphthol, respectively, with 2,6-dichloropyridine. Poly(ether urea)s were synthesized through the polyaddition reactions of these diamines with aromatic, semiaromatic, and cycloaliphatic di-isocyanates. All the monomers and polymers were fully characterized, and physical properties of the polymers, including the thermal behavior, thermal stability, solubility, and solution viscosity, were studied. The polyureas showed improved thermal stability.(C) 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 961-965, 2004.
机译:通过4-氨基苯酚和5-氨基-1-的亲核芳族取代反应制备了两个二胺2,6-双(4-氨基苯氧基)吡啶和2,6-双(5-氨基-1-萘氧基)吡啶萘酚分别与2,6-二氯吡啶。通过这些二胺与芳族,半芳族和脂环族二异氰酸酯的加聚反应合成了聚醚脲。充分表征了所有单体和聚合物,并研究了聚合物的物理性质,包括热行为,热稳定性,溶解度和溶液粘度。聚脲显示出改善的热稳定性。(C)2004 Wiley Periodicals,Inc. J Appl Polym Sci 93:961-965,2004。

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