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    • 64. 发明申请
    • AQUEOUS POLYURETHANE RESIN DISPERSION AND USE THEREOF
    • 水性聚氨酯树脂分散体及其用途
    • US20130317167A1
    • 2013-11-28
    • US13984737
    • 2012-02-09
    • Atsushi MorikamiMasahiro NaikiFumio AdachiManabu Takahashi
    • Atsushi MorikamiMasahiro NaikiFumio AdachiManabu Takahashi
    • C09D175/04
    • C09D175/04C08G18/0823C08G18/10C08G18/6659C09D175/06C08G18/28
    • An aqueous polyurethane resin dispersion exhibits excellent drying properties of coating films and gives coating films having high water resistance and on the other hand showing a high rate of swelling with respect to aqueous cleaning liquids to permit new application. The aqueous polyurethane resin dispersion is a dispersion of a polyurethane resin in an aqueous medium, the polyurethane resin being obtained by reacting (A) a polyurethane prepolymer obtained from (a) a polyisocyanate compound, (b) a polycarbonate polyol with a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound and (d) a blocking agent, with (B) a chain extender, the total content of urethane bonds and urea bonds being 7 to 15 wt %, the content of carbonate bonds being 15 to 40 wt %, the content of ether bonds being 0 wt %, the content of isocyanate groups bonded to the blocking agent being 0.2 to 2 wt %, each of these contents being based on solid contents, the acid value being 11 to 16 mg KOH/g, the weight average molecular weight being 25,000 to 60,000. A coating composition includes the dispersion. A polyurethane resin film is obtained by thermally drying a composition including the dispersion.
    • 水性聚氨酯树脂分散体表现出优异的涂膜干燥性能,并提供具有高耐水性的涂膜,另一方面表现出相对于水性清洁液体的高膨胀率以允许新的应用。 水性聚氨酯树脂分散体是聚氨酯树脂在水性介质中的分散液,聚氨酯树脂通过(A)由(a)多异氰酸酯化合物得到的聚氨酯预聚物,(b)数均分子量的聚碳酸酯多元醇 重量为400〜3000,(c)含酸性基团的多元醇化合物和(d)封端剂,(B)扩链剂,氨基甲酸酯键和尿素键的总含量为7〜15重量%,含量 的碳酸酯键为15〜40重量%,醚键含量为0重量%,与封端剂结合的异氰酸酯基的含量为0.2〜2重量%,这些含量均以固体成分计,酸值 为11〜16mg KOH / g,重均分子量为25,000〜60,000。 涂料组合物包括分散体。 通过将包含该分散体的组合物进行热干燥来获得聚氨酯树脂膜。
    • 70. 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
    • US20110313100A1
    • 2011-12-22
    • US13203450
    • 2010-02-23
    • Atsushi MorikamiMasahiro NaikiFumio AdachiManabu Takahashi
    • Atsushi MorikamiMasahiro NaikiFumio AdachiManabu Takahashi
    • C09D175/04C08L75/04
    • C09D5/02C08G18/0823C08G18/12C08G18/44C08G18/6692C08G18/758C08G2101/00C09D175/06C08G18/286C08G18/3228
    • An aqueous polyurethane resin dispersion which can provide a coating film having high impact resistance and hardness and excellent in adhesiveness to an electrodeposited coating surface is to be provided.It is an aqueous polyurethane resin dispersion which comprises a polyurethane resin obtained by reacting (A) a polyurethane prepolymer which is 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., and (B) a chain elongating agent which has reactivity with the isocyanate group, being dispersed in an aqueous medium, a sum of a content of urethane bodings and a content of urea bondings is 15 to 30% by weight in terms of solid components, a content of carbonate bondings is 8% by weight or more and less than 15% by weight in terms of solid components, and a content of an isocyanate group to which the above-mentioned blocking agent has bound is 0.2 to 3% by weight in terms of solid components and calculated on the isocyanate group.
    • 可以提供能够提供具有高抗冲击性和硬度以及对电沉积涂层表面具有优异粘附性的涂膜的水性聚氨酯树脂分散体。 它是一种水性聚氨酯树脂分散体,其包含聚氨酯树脂,该聚氨酯树脂通过使(A)聚氨酯预聚物反应获得,所述聚氨酯预聚物是通过(a)多异氰酸酯化合物,(b)至少一种含有数均分子量的聚碳酸酯多元醇的多元醇化合物 重量为400〜3000,(c)含酸性基团的多元醇化合物,(d)在80〜180℃下分解的异氰酸酯基封闭剂,(B)具有反应性的伸长剂 与异氰酸酯基分散在水性介质中,氨基甲酸乙酯凝胶含量与尿素键含量之和为固形成分的15〜30重量%,碳酸酯键合的含量为8重量%,或 以固形成分换算为15重量%以上,上述封端剂结合的异氰酸酯基含量为0.2〜3重量%,按异氰酸酯基计算。