Blakely, Sokoloff, Taylor & Zafman LLP
Preparation method of hot dip galvanized sheet anti-corrosive treatment agent of environmental protective
A coating composition is provided, the starting materials of which comprise nano SiO2, film-forming substance, film-forming aid, accelerator, acid, and water. The composition has pH of 3-9. A passivated zinc-plated material is also provided. The zinc-plated material comprises zinc-plated substrate and passivated coat adhered to the surface of the zinc-plated substrate, wherein the passivated coat is formed by curing the coating composition. The coating composition can impart to the zinc-plated material excellent corrosion resistance, water resistance, high temperature resistance, surface conductivity, and adhesion to the zinc-plated substrate. Additionally, the coating composition contains no Cr6+, and satisfies the requirement of EU RoHS Directive.
Pangang Group Research Institute Co., Ltd. Pangang Group Steel Vanadium and Titanium Co., Ltd. Pangang Group Company Ltd. Pangang Group Panzhihua Iron and Steel Research Institute Co., Ltd.
C C C C C C C C C
C09D C09D C09D C23C C09D C08K C23C C23C C23C
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Zhefeng Xingde Yong Guoan Quan Dongsheng Aiping Taixiong
Xu Cheng Chen Li Xu Mei Zhang Guo