SURFACE-TREATMENT SOLUTION COMPOSITION CONTAINING TRIVALENT CHROMIUM AND INORGANIC COMPOUND, ZINC-BASED PLATED STEEL SHEET SURFACE-TREATED USING SAME, AND METHOD FOR PRODUCING SAME

    公开(公告)号:US20190264334A1

    公开(公告)日:2019-08-29

    申请号:US16339888

    申请日:2017-09-29

    申请人: POSCO

    IPC分类号: C23C22/42 C23C22/82

    摘要: Provided is a surface-treating solution composition, a zinc-based plated steel sheet surface-treated using the same, and a method for producing the same, wherein the surface-treatment solution composition includes: 10 wt % to 20 wt % of a trivalent chromium compound containing chromium phosphate (A) and chromium nitrate (B), the content ratio thereof, A/(A+B), satisfying 0.3 to 0.6; 20 wt % to 40 wt % of a silane-based sol-gel resin in which three types of silane compounds are crosslinked; 0.2 wt % to 0.4 wt % of a rust-inhibiting and corrosion-resistant agent; 0.1 wt % to 0.3 wt % of a molybdenum-based compound; 5 wt % to 10 wt % of a water-soluble cationic urethane resin; 0.5 wt % to 2.0 wt % of a silane coupling agent; 0.5 wt % to 2.0 wt % of an Al compound; and 25.3 wt % to 63.7 wt % of water. The zinc-based plated steel sheet surface-treated with the surface-treatment solution composition containing trivalent chromium has an excellent effect on corrosion resistance, blackening resistance, fingerprint resistance, piping oil infiltration, and alkali resistance.

    Coated metal sheet, method for manufacturing same, and exterior building material

    公开(公告)号:US10378111B2

    公开(公告)日:2019-08-13

    申请号:US15314185

    申请日:2014-12-16

    摘要: Provided is a coated metal sheet for exterior use, having a metal sheet, and a top coat film situated on the metal sheet. The top coat film contains a resin, 0.2-15 volume percent of a gloss control agent composed of porous particles, and a delustering agent composed of primary particles. The coated metal sheet satisfies the following expressions in which, in the number-size distribution of the gloss control agent and the delustering agent, R is the number-average particle diameter (μm) of the gloss control agent, D197.5 and D297.5 are 97.5% particle diameter values (μm) of the gloss control agent and the delustering agent, Ru is the upper limit particle diameter (μm) of the gloss control agent, and T is the film thickness (μm) of the top coat film. D197.5/T≤0.7 Ru≤1.2T R≥1.0 2.0≤D297.5/T≤7.0 13≤T≤20.

    Metal surface treatment agent, and metal surface treatment method
    110.
    发明授权
    Metal surface treatment agent, and metal surface treatment method 有权
    金属表面处理剂,金属表面处理方法

    公开(公告)号:US09382635B2

    公开(公告)日:2016-07-05

    申请号:US14899524

    申请日:2014-03-13

    摘要: A metal surface treatment agent and a metal surface treatment which impart excellent electrodeposition coatability (smoothness and throwing power) to a metallic base while heightening corrosion resistance. The metal surface treatment agent that is used in a pretreatment of an electrodeposition coating of a metallic base and includes one or more zirconium, titanium, or hafnium metallic elements, one or more silane coupling agents, hydrolysates thereof, or polymers thereof, and an electrophilic reactive group-containing compound (C) containing a homocycle and a heterocycle in one molecule and has a water solubility at 20° C. of 0.2 to 30 g/L, and the contents of the metallic elements, the coupling agents, and the electrophilic reactive group-containing compound satisfy a given relationship.

    摘要翻译: 金属表面处理剂和金属表面处理,其在提高耐腐蚀性的同时赋予金属基材优异的电沉积涂布性(平滑性和抛光力)。 金属表面处理剂,其用于预处理金属基底的电沉积涂层,并且包括一种或多种锆,钛或铪金属元素,一种或多种硅烷偶联剂,其水解物或其聚合物,以及亲电子 在一分子中含有同质异构体和杂环的具有反应性基团的化合物(C),其在20℃下的水溶性为0.2〜30g / L,金属元素,偶联剂和亲电子 含有活性基团的化合物满足给定的关系。