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    • 3. 发明授权
    • Degradable polyurethane resin
    • 可降解聚氨酯树脂
    • US06555645B1
    • 2003-04-29
    • US09831408
    • 2001-05-09
    • Kan IkedaHiroaki MatsunoNaoki Sato
    • Kan IkedaHiroaki MatsunoNaoki Sato
    • C08G1875
    • C08G18/4269C08G18/42C08G18/4238C08G18/757C08G18/758C08G18/7831C08G18/798C08G2230/00
    • The invention is a degradable polyurethane resin obtained by reacting 2,5-/2,6-diisocyanatomethylbicyclo[2.2.1]heptane and/or a modified compound thereof with polyol comprising a single compound, mixture or copolycondensate selected from the group consisting of (A) polyhydroxycarboxylate polyol, (B) aliphatic polyester polyol and (C) saccharides, or (D) straight or branched polyol formed by condensation of (A) and/or (B) with aliphatic polyhydric alcohol having functionality of three or more, and the polyurethane resin has hydralyzability and biodegradability, is excellent in rigidity and elasticity in combination with flexibility as compared with conventionally known biodegradable resin, and can provide formed articles having outstandingly high elasticity and elongation and other unprecedented properties.
    • 本发明是通过使2,5- / 2,6-二异氰酸甲酯基双环[2.2.1]庚烷和/或其改性化合物与多元醇反应得到的可降解聚氨酯树脂,所述多元醇包含单一化合物,混合物或共缩聚物,其选自( A)多羟基羧酸酯多元醇,(B)脂肪族聚酯多元醇和(C)糖类,或(D)通过(A)和/或(B)与官能度为3以上的脂肪族多元醇缩合形成的直链或支链多元醇,以及 聚氨酯树脂具有可水解性和生物降解性,与常规已知的可生物降解树脂相比,刚性和弹性与柔韧性相比优异,并且可以提供具有突出的高弹性和伸长率等前所未有的性能的成型制品。