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    • 9. 发明申请
    • AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME
    • 水性聚氨酯树脂分散体及其制备方法
    • US20110313099A1
    • 2011-12-22
    • US13203247
    • 2010-02-23
    • Atsushi MorikamiMasahiro NaikiFumio AdachiManabu Takahashi
    • Atsushi MorikamiMasahiro NaikiFumio AdachiManabu Takahashi
    • C09D175/04C08L75/04
    • C08G18/0823C08G18/12C08G18/44C08G18/6692C08G18/758C08G2101/00C09D5/02C09D175/06C08G18/286
    • An aqueous polyurethane resin dispersion which can easily carry out repaint or removal of an extra coating film after coating on a substrate material, and has high coating film hardness is to be provided.It is an aqueous polyurethane resin dispersion which comprises (A) a polyurethane resin obtained by reacting (a) a polyisocyanate compound, (b) at least one polyol compound containing a polycarbonate polyol having a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound, and (d) a blocking agent for an isocyanate group, which dissociates at 80 to 180° C., being dispersed in an aqueous medium, a sum of a content of urethane bondings and a content of urea bondings is 7 to 30% by weight in terms of solid components, a content of carbonate bondings is 8 to 40% by weight in terms of solid components, and a content of an isocyanate group to which the above-mentioned blocking agent has bound is 2 to 10% by weight in terms of solid components and calculated on the isocyanate group.
    • 可以提供一种水性聚氨酯树脂分散体,其可以在涂布在基材上之后容易地进行再涂覆或除去多余的涂膜,并且具有高的涂膜硬度。 它是一种水性聚氨酯树脂分散体,其包含(A)通过(a)多异氰酸酯化合物,(b)至少一种含有数均分子量为400至3000的聚碳酸酯多元醇的多元醇化合物(c) )含酸性基团的多元醇化合物,和(d)在80〜180℃离解的异氰酸酯基封闭剂,分散在水性介质中,氨基甲酸酯键合的含量与 尿素键的固体成分为7〜30重量%,以固体成分计,碳酸酯键合含量为8〜40重量%,上述封端剂所结合的异氰酸酯基的含量 按固形成分计为2〜10重量%,以异氰酸酯基计算。
    • 10. 发明申请
    • AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME
    • 水性聚氨酯树脂分散体及其制备方法
    • US20110136976A1
    • 2011-06-09
    • US13054391
    • 2009-06-30
    • Taku NakamuraMasahiro NaikiManabu Takahashi
    • Taku NakamuraMasahiro NaikiManabu Takahashi
    • C09D175/04
    • C08G18/6659C08G18/0823C08G18/12C08G18/44C08G18/758C09D175/06C08G18/3228
    • This is to provide an aqueous polyurethane resin dispersion which can form a tough coating film.An aqueous polyurethane resin dispersion is obtained by dispersing an aqueous polyurethane resin, which is obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a1) a polycarbonate polyol having no urethane bonding having an average molecular weight of 400 to 5000, and having 2.05 to 5 hydroxyl groups in average in one molecule, (b) a polyol compound having an acidic group and (c) a polyisocyanate, or obtained by reacting (a2) the polycarbonate polyol having no urethane bonding having an average molecular weight of 600 to 5000, and having 2.05 to 5 hydroxyl groups in average in one molecule, and having an acidic group, and (c) a polyisocyanate, and (B) a chain elongating agent having a reactivity with the isocyanate group of (A) the polyurethane prepolymer, being dispersed in an aqueous medium.
    • 这是提供一种能形成坚硬涂膜的水性聚氨酯树脂分散体。 通过使(A)通过使(a1)不具有平均分子量为400〜5000的氨基甲酸酯键的聚碳酸酯多元醇反应得到的聚氨酯预聚物与(A)聚氨酯预聚物反应而得到的水性聚氨酯树脂, 在一分子中平均为2.05〜5个羟基,(b)具有酸性基团的多元醇化合物和(c)多异氰酸酯,或通过使(a2)不具有平均分子量为600的聚氨酯键的聚碳酸酯多元醇与 5000,并且在一个分子中平均具有2.05至5个羟基并具有酸性基团,和(c)多异氰酸酯,和(B)与(A)聚氨酯预聚物具有异氰酸酯基的反应性的伸长剂 ,分散在水性介质中。