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    • 64. 发明申请
    • SURFACE-TREATED STEEL SHEET FOR FUEL TANKS AND METHOD OF FABRICATING SAME
    • 燃料油表面处理钢板及其制造方法
    • WO00032843A1
    • 2000-06-08
    • PCT/KR1999/000722
    • 1999-11-30
    • B05D1/28B05D7/14B32B15/04B32B15/08C09D123/04C09D123/10C09D127/12C09D161/28C09D163/00C09D171/10C09D183/00C09D191/06C23C22/26C23C22/27C23C22/28C23C22/30C23C22/32C23C22/37C23C28/00C23C30/00
    • C23C28/3225C23C28/00C23C28/345C23C30/00C23C2222/20Y10S428/926Y10S428/935Y10T428/12014Y10T428/12549Y10T428/12569Y10T428/12611Y10T428/12799Y10T428/12951Y10T428/31511Y10T428/31551Y10T428/31942
    • A surface-treated steel sheet for fuel tanks includes a cold-rolled steel sheet with a low carbon content, a zinc or zinc-based alloy plating layer formed on the steel sheet, and a chromate film coated on the zinc or zinc-based plating layer. The chromate film is formed from a chromate solution. The chromate solution includes a subject solution containing a chrome aqueous solution where a ratio of trivalent chrome ions is in the range of 0.4-0.8 and a concentration of chrome is in the range of 5-50g/l. Phosphoric acid of 20-150wt.% with respect to the chrome content, 10-100wt.% of fluoric acid, 50-2000wt.% of colloidal silica having pH of 2-5, and 5-30wt.% of sulfuric acid are mixed with the chrome aqueous solution. An aqueous solution of 5-50wt.% with respect to the subject solution are added to the subject solution. The aqueous solution contains Epoxy-based silane of 2-10wt.% with respect to all of the aqueous solution for hardening agent and has pH of 2-3. A resin coating layer is formed on one side or both sides of the chromate film. A resin coating layer is formed from a resin solution. The resin solution includes a phenoxy resin solution having a molecular weight of 25,000-50,000, colloidal silica of 10-20phr with respect to the phenoxy resin content, and melamine resin of 2-15phr with respect to the phenoxy resin content.
    • 用于燃料箱的表面处理钢板包括具有低碳含量的冷轧钢板,在钢板上形成的锌或锌基合金镀层,以及涂覆在锌或锌基镀层上的铬酸盐膜 层。 铬酸盐膜由铬酸盐溶液形成。 铬酸盐溶液包括含有铬水溶液的目标溶液,其中三价铬离子的比例在0.4-0.8范围内,铬的浓度在5-50g / l的范围内。 相对于铬含量为20-150重量%的磷酸,10-100重量%的氟酸,50-2000重量%的pH为2-5的胶体二氧化硅和5-30重量%的硫酸被混合 与铬水溶液。 将相对于本发明溶液的5-50重量%的水溶液加入到本发明溶液中。 该水溶液含有相对于所有固化剂水溶液为2-10重量%的环氧基硅烷,pH为2-3。 在铬酸盐膜的一面或两面上形成树脂涂层。 由树脂溶液形成树脂被覆层。 树脂溶液包含分子量为25,000-50,000的苯氧基树脂溶液,相对于苯氧基树脂含量为10-20phr的胶体二氧化硅和相对于苯氧基树脂含量为2-15phr的三聚氰胺树脂。
    • 69. 发明公开
    • Chromium-containing low-cure coating composition
    • Chrom enthaltende Zusammensetzungfüreine Beschichtung mit niedrigerAushärttemperatur。
    • EP0278283A1
    • 1988-08-17
    • EP88100875.9
    • 1988-01-21
    • Metal Coatings International Inc.
    • Guhde, Donald J.Dorsett, Terry E.
    • C23C22/24C23C22/26C23C22/27
    • C23C22/74C09D5/10
    • A coating composition is now provided which can have a great number of desirable coating characteristics, when the composition is applied and cured on a metal substrate. Moreover, the coating composition has applicability to a great variety of metal substrates. Such substrates include base metal such as steel as well as metal coated substrates such as zinc electroplated steel. Furthermore, the coating compositions can be useful when applied to substrates sensitive to elevated cure temperature, e.g., annealed steel. In one important aspect the composition can contain hexavalent-chromium-providing substance in mixture with cobalt compound. Particulate metal may be present in the compositon. A composition furthermore most desirably contains a special organic acid/alcohol reducing agent combination for the hexavalent chromium. The composition can provide a low-cure coating on a metal substrate, which can then translate into higher production line speeds as when used for coating of metal coils.
    • 现在提供一种涂料组合物,当组合物在金属基材上施用和固化时,其可以具有大量所需的涂层特性。 此外,涂料组合物适用于各种各样的金属基材。 这种基材包括诸如钢的贱金属以及诸如锌电镀钢的金属涂覆的基材。 此外,涂料组合物在用于对升高的固化温度敏感的基材上时是有用的,例如退火的钢。 在一个重要方面,组合物可以含有与钴化合物混合的六价铬提供物质。 颗粒状金属可能存在于组合物中。 此外最理想的组合物包含六价铬的特殊有机酸/醇还原剂组合。 组合物可以在金属基材上提供低固化涂层,随后可以将其转化成更高的生产线速度,如同用于涂覆金属线圈时一样。