发明名称 CORROSION RESISTANT TRIVALENT CHROMIUM PHOSPHATED CHEMICAL CONVERSION COATINGS
摘要 An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP).
申请公布号 CA2433122(C) 申请公布日期 2007.02.20
申请号 CA20032433122 申请日期 2003.06.23
申请人 UNITED TECHNOLOGIES CORPORATION 发明人 BHATIA, PROMILA
分类号 C23C22/34;C23C22/36;C01G37/04;C23C22/06;C23C22/56;C25D11/24 主分类号 C23C22/34
代理机构 代理人
主权项
地址