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    • 4. 发明授权
    • Aluminum flake pigment treated with time release corrosion inhibiting
compounds and coatings containing the same
    • 铝片状颜料处理时间缓和腐蚀抑制化合物和含有其的涂层
    • US5322560A
    • 1994-06-21
    • US114718
    • 1993-08-31
    • Jeffrey S. DePueClint W. CarpenterLynne G. Bemer
    • Jeffrey S. DePueClint W. CarpenterLynne G. Bemer
    • C09C1/62C09C1/64C09D5/38C23F11/18
    • C09D5/38C09C1/642C09C1/644C09C1/648C01P2004/20C01P2004/80
    • The invention is a slightly water-soluble, time release corrosion inhibitor compound for treating aluminum flake pigment. The corrosion inhibitor is the reaction product of a water-soluble metal salt including metals selected from the group consisting of yttrium and rare earth metals and an anionic metal salt including transition metal oxo-complexes and soluble salts of silicon and mixtures thereof. The corrosion inhibitor is useful for preventing hydrogen gassing of aluminum pigment particles. The compound is particularly useful for preventing gassing of bare and chromated aluminum pigment particles in aqueous compositions and in water-borne coating compositions having a basic pH. The pigment particles used in combination with the corrosion inhibitors of the present invention experience significantly less hydrogen gassing in a high pH aqueous environment and in water-borne coating compositions having high pH, than aluminum flake pigment particles and coatings without the corrosion inhibitor. The corrosion inhibitor is also effective when combined with a second corrosion inhibitor, such as a water-soluble salt of yttrium or rare earth metal in a coating composition.
    • 本发明是用于处理铝薄片颜料的轻微水溶性时间缓和腐蚀抑制剂化合物。 腐蚀抑制剂是包括选自钇和稀土金属的金属的水溶性金属盐和包含过渡金属氧代络合物和硅的可溶性盐的阴离子金属盐及其混合物的反应产物。 防腐剂可用于防止铝颜料颗粒的氢气化。 该化合物特别可用于防止水性组合物中的裸露和铬酸盐的铝颜料颗粒和具有碱性pH的水性涂料组合物的气化。 与本发明的腐蚀抑制剂组合使用的颜料颗粒在高pH水溶液环境中以及在具有高pH的水性涂料组合物中的氢气明显少于铝片状颜料颗粒和没有腐蚀抑制剂的涂层。 当与涂料组合物中的第二种腐蚀抑制剂如钇或稀土金属的水溶性盐组合时,腐蚀抑制剂也是有效的。