发明名称 |
Stability additive for trivalent chrome conversion coating bath solutions |
摘要 |
An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a solution stability additive for reducing precipitation of trivalent chromium over time. The concentration of the solution stability additive varies based on the complexing capability of the additive. Suitable additives for use as solution stability additives in accordance with the present invention are selected from the group consisting of acetic acid, glycolic acid, and mixtures thereof.
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申请公布号 |
US6648986(B1) |
申请公布日期 |
2003.11.18 |
申请号 |
US20020146435 |
申请日期 |
2002.05.13 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
TANG XIA;BHATIA PROMILA;PARKOS, JR. JOSEPH JOHN;LOMASNEY GARY M.;JAWOROWSKI MARK |
分类号 |
C23C22/34;C25D11/24;(IPC1-7):C23C22/00 |
主分类号 |
C23C22/34 |
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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