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    • 4. 发明申请
    • METHOD FOR COATING POROUS POLYURETHANE RESIN
    • 涂多孔聚氨酯树脂的方法
    • WO2005035609A2
    • 2005-04-21
    • PCT/US2004/027388
    • 2004-08-23
    • FOREX ASSET MANAGEMENT, INC.ITO, Koichi
    • ITO, Koichi
    • C08G
    • C08J9/365B05D7/02B05D7/544C08J2375/04C08J2429/00Y10T428/249953Y10T428/249987Y10T428/249992
    • A method for coating a porous polyurethane resin substrate with an aromatic isocyanate coating composition is provided comprising the steps of (i) providing a porous substrate of a polyurethane foam resin comprising at least one surface upon which the aromatic isocyanate coating composition is to be applied; (ii) applying at least one coating of a primary layer to the substrate surface, the primary layer comprising an aqueous solution of a compound that includes at least one -OH reactive group in its nonaqueous, dry state, and capable, upon drying, of forming a self-supporting, continuous film on the substrate surface at room temperature; (iii) optionally subjecting the applied primary layer to forced drying conditions at a temperature below the softening point of the porous polyurethane resin substrate; and (iv) after allowing the primary layer to substantially dry, applying a secondar layer comprising an aromatic isocyanate compound to the primary layer to form a continuous, film-forming coating on the substrate surface, preferably one having the property of being water - impermeable or water-impermeable and water vapor-permeable.
    • 提供了一种用芳族异氰酸酯涂料组合物涂覆多孔聚氨酯树脂基材的方法,包括以下步骤:(i)提供聚氨酯泡沫树脂的多孔基材,其包含至少一个表面,其上涂有芳族异氰酸酯涂料组合物; (ii)将至少一个初级层的涂层施加到基底表面,所述主层包含化合物的水溶液,所述化合物的水溶液包含至少一个在其非水干燥状态下的-OH反应性基团,并且能够在干燥时 在室温下在基材表面上形成自支撑的连续膜; (iii)任选地使所施加的主层在低于多孔聚氨酯树脂基材的软化点的温度下进行强制干燥条件; 和(iv)在允许主层基本干燥之后,将包含芳族异氰酸酯化合物的第二层施加到初级层,以在基材表面上形成连续的成膜涂层,优选具有不透水性的物质 或不透水和透水蒸气。