| 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 an additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP). <IMAGE> |
| 申请公布号 |
EP1378585(A1) |
申请公布日期 |
2004.01.07 |
| 申请号 |
EP20030254085 |
申请日期 |
2003.06.27 |
| 申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
BHATIA, PROMILA |
| 分类号 |
C23C22/36;C23C22/06;C23C22/34;C23C22/56;C25D11/24 |
主分类号 |
C23C22/36 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
