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    • 7. 发明授权
    • Water-dispersible poly(urethane-urea) compositions
    • 水分散性聚(尿烷 - 尿素)组合物
    • US5504145A
    • 1996-04-02
    • US115280
    • 1993-08-31
    • Urvee Y. Treasurer
    • Urvee Y. Treasurer
    • C08G18/08C08G18/12C08G18/34C08G18/36
    • C08G18/36C08G18/0823C08G18/12C08G18/348
    • Water dispersible, one component, self crosslinkable poly(urethane-urea) composition that is stable and capable of curing at room temperature is prepared by forming a prepolymer comprising an alcoholized drying oil; a diisocyanate, a polyalkylene ether polyol, and a dihydroxy containing alkanoic acid polyol; neutralizing the prepolymer; contacting the neutralized prepolymer with water and diamine wherein the alcoholized drying oil has a sufficient content of monoglycerides to allow for chain extension in step (C) and the poly(urethane-urea) self-crosslinks upon drying. The waterborne poly(urethane-urea) composition exhibits good chemical resistance, adhesion, abrasion, and high gloss properties when used as a coating.
    • 通过形成包含醇化干燥油的预聚物制备稳定且能够在室温下固化的水分散性单组分自交联聚氨酯脲组合物, 二异氰酸酯,聚亚烷基醚多元醇和含二羟基的链烷酸多元醇; 中和预聚物; 使中和的预聚物与水和二胺接触,其中醇化干燥油具有足够的单酸甘油酯含量,以允许步骤(C)中的链延长和干燥后的聚(氨基甲酸酯 - 尿素)自交联。 当用作涂层时,水性聚(尿烷 - 尿素)组合物表现出良好的耐化学性,粘附性,耐磨性和高光泽性能。