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    • 10. 发明申请
    • PROTECTIVE COATING COMPOSITION WITH EARLY WATER RESISTANCE
    • 具有早期耐水性的保护涂料组合物
    • WO98058028A1
    • 1998-12-23
    • PCT/US1998/012720
    • 1998-06-18
    • C04B12/04C04B28/26C09D1/02C09D5/10H04R5/033C08K3/08
    • C09D5/106C04B12/04C04B28/26C04B2111/00525C09D1/02C04B14/062C04B14/043C04B14/303C04B14/34C04B22/10
    • A protective coating composition with early water resistance is prepared, according to principles of this invention, by combining in the presence of water and in their proper proportions: (1) zinc dust; (2) a Group IA metal silicate; (3) a colloidal silica ingredient that is modified with a Group IA metal silicate; and (4) a carbonate-containing internal hardener. Optional ingredients such as a stabilizing agent, external hardener, pigments and fillers, and other additives can be used to achieve certain coating properties depending on the final intended coating application. The Group IA metal silicate and colloidal silica ingredient that is modified with a Group IA metal silicate react, in the presence of the other ingredients, to form a silicate network having early water resistance, i.e., water insolubility, improved high-temperature resistance, improved corrosion resistance, and zero volatile organic content. Coating compositions prepared according to principles of this invention are formulated to cure at ambient temperature to form a water insoluble protective coating, for use in such applications as a full primer or preconstruction primer, within three hours.
    • 根据本发明的原理,通过在水和其适当比例的存在下组合制备具有早期耐水性的保护性涂料组合物:(1)锌粉; (2)IA族金属硅酸盐; (3)用IA族金属硅酸盐改性的胶体二氧化硅成分; 和(4)含碳酸酯的内部硬化剂。 可以使用任选的成分,例如稳定剂,外部固化剂,颜料和填料以及其它添加剂,以根据最终的预期涂料应用获得一定的涂布性能。 在IA族金属硅酸盐中改性的IA族金属硅酸盐和胶体二氧化硅成分在存在其它成分的情况下反应形成具有早期耐水性的硅酸盐网络,即水不溶性,改善的耐高温性,改进 耐腐蚀性和零挥发性有机物含量。 配制成根据本发明原理制备的涂料组合物在环境温度下固化以形成不溶于水的保护涂层,用于诸如全底漆或预结构底漆的应用,在3小时内。