发明名称 |
CHROMIUM HYDROXIDE, METHOD FOR PRODUCING THE SAME, TRIVALENT CHROMIUM-CONTAINING SOLUTION USING THE SAME, AND CHROMIUM PLATING METHOD |
摘要 |
<p>Chromium hydroxide of the invention has an average particle size D determined from a scanning electron micrograph of 40 to 200 nm and a degree of agglomeration of 10 and more and less than 70, the degree of agglomeration being defined to be a ratio of a volume average particle size D50 determined with a particle size analyzer to the average particle size D, D50/D. The chromium hydroxide is suitably obtained by adding an aqueous solution containing trivalent chromium to an aqueous solution of an inorganic alkali at a reaction temperature of 0°C or higher and lower than 50°C. The inorganic alkali is preferably an alkali metal hydroxide.</p> |
申请公布号 |
EP2141125(A1) |
申请公布日期 |
2010.01.06 |
申请号 |
EP20080738913 |
申请日期 |
2008.03.26 |
申请人 |
NIPPON CHEMICAL INDUSTRIAL CO., LTD.;HOSHINO, SHIGEO;SHIMPO, RYOKICHI |
发明人 |
HOSHINO, SHIGEO;SHIMPO, RYOKICHI;TANAKA, YASUYUKI |
分类号 |
C01G37/02;C25D3/06;C25D21/14 |
主分类号 |
C01G37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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