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    • 6. 发明申请
    • COATING COMPOSITION FOR STEEL SHEETS HAVING ZINC AND ZINC ALLOY COATING LAYER, METHOD FOR FORMING COATING LAYER USING THE COATING COMPOSITION AND STEEL SHEET HAVING THE COATING LAYER FORMED THEREOF
    • 具有锌和锌合金涂层的钢板涂层组合物,使用该涂层组合物形成涂层的方法和形成有该涂层组合物的钢板
    • WO2009028801A2
    • 2009-03-05
    • PCT/KR2008004420
    • 2008-07-29
    • POSCOKIM YOUNG GEUNPARK HA SUNLEE SANG MINCHOUN SI YOULKIM YONG WOONLEE JAE RYUNG
    • KIM YOUNG GEUNPARK HA SUNLEE SANG MINCHOUN SI YOULKIM YONG WOONLEE JAE RYUNG
    • C09D143/02
    • C09D129/04C08K3/22C08K3/32Y10T428/12569Y10T428/1259Y10T428/12611Y10T428/12667Y10T428/12785Y10T428/12792
    • There is provided a coating composition for zinc- and zinc alloy-coated steel sheets capable of forming a coating film having a fine appearance as well as excellent properties such as adhesion, alkaline coating removal property and lubricating property, a method for forming a coating film on a steel sheet using the same, and a steel sheet having a coating film formed according to the method. The coating composition for zinc- and zinc alloy -coated steel sheets includes: 1 to 30% by weight of hypophosphorous add, 0.1 to 10% by weight of manganese, 0.01 to 5% by weight of a polyvinyl compound, zinc oxide and the balance of water, and further comprises 20% by weight or less of alcohol, when necessary, wherein the zinc oxide is included in such a content that, when 50 ml (milliliters) of the coating composition is neutralized and titrated with 0.1N NaOH, the NaOH used for the neutralization titration is present in an amount of 10.0 m# (milliliters) or less, and a content of free add in the coating composition is adjusted to such an amount that, when 50 ml (milliliters) of the coating composition is neutralized and titrated with 0.1N NaOH, the NaOH used for the neutralization titration is present in an amount of 10.0 m# (milliliters) or less. The coating film formed on the steel sheet using the coating composition shows excellent properties such as lubricating property, adhesion and coating removal property, and also has a fine surface appearance.
    • 本发明提供一种锌和锌合金被覆钢板用涂料组合物,其能够形成外观良好的涂膜和密合性,碱性涂膜除去性,润滑性等优异的特性,形成涂膜的方法 在使用其的钢板上,以及具有根据该方法形成的涂膜的钢板。 用于锌和锌合金涂层钢板的涂层组合物包括:1-30重量%次磷酸盐,0.1-10重量%锰,0.01-5重量%聚乙烯化合物,氧化锌和余量 并且当需要时还包含20重量%或更少的醇,其中氧化锌的含量使得当用0.1N NaOH中和和滴定50ml(毫升)的涂料组合物时, 用于中和滴定的NaOH的存在量为10.0毫升(毫升)或更少,并且涂料组合物中的游离添加剂的含量被调节至使得当50毫升(毫升)的涂料组合物为 用0.1N NaOH中和并滴定,用于中和滴定的NaOH的存在量为10.0毫升(毫升)或更少。 使用该涂料组合物在钢板上形成的涂膜显示出优异的性能如润滑性,粘合性和涂层去除性,并且还具有优良的表面外观。