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    • 5. 发明授权
    • One-pack type moisture-curable composition
    • 单组分湿气固化组合物
    • US06221998B1
    • 2001-04-24
    • US09424501
    • 1999-11-24
    • Hiroyuki OkuhiraNaoya Adachi
    • Hiroyuki OkuhiraNaoya Adachi
    • C08G1832
    • C08G18/765C08G18/10C08G18/3256C08G18/3893C08G18/503
    • An isocyanate-based one-part moisture curable composition having excellent storage stability and high curing rate, and use of this composition enables production of a cured product of high flexibility without using any plasticizer. The composition comprises (A) an isocyanate compound having a structure wherein all of the isocyanate (NCO) groups in the molecule have secondary or tertiary carbon bonded thereto, and (B) a ketimine having ketimine (C═N) bond derived from a ketone or an aldehyde and an amine having a structure wherein &agr;-position of at least one of the carbon or the nitrogen of the ketimine bond has a branched carbon atom or a ring member carbon atom bonded thereto. A urethane prepolymer having such structure is preferable for use as the isocyanate compound (A).
    • 具有优异的储存稳定性和高固化速度的异氰酸酯基的一部分湿气固化性组合物,并且使用该组合物能够在不使用任何增塑剂的情况下生产高柔性的固化产物。 该组合物包含(A)具有结构的异氰酸酯化合物,其中分子中的所有异氰酸酯(NCO)基团都具有二级或叔碳键合,和(B)酮衍生自酮的酮亚胺(C = N)键 或具有其中酮亚胺键的碳或氮中的至少一个的α-位具有支链碳原子或与其结合的环成员碳原子的结构的醛和胺。 具有这种结构的氨基甲酸酯预聚物优选用作异氰酸酯化合物(A)。