发明名称 |
PROCESS FOR FORMING A PHOSPHATE CONVERSION COATING |
摘要 |
To prevent the deterioration in water-resistant secondary adherence that occurs during prolonged use of a fluoride-containing phosphate conversion coating liquid composition to form a conversion coating on metal surfaces that are at least partly aluminiferous, the aluminum compound-containing sludge produced in the phosphate conversion coating liquid composition as it is used is coagulated and sedimented by adding at least one cationic polymeric coagulant to the sludge-containing phosphate conversion coating liquid composition. |
申请公布号 |
EP0765405(A4) |
申请公布日期 |
1997.06.04 |
申请号 |
EP19950926607 |
申请日期 |
1995.07.11 |
申请人 |
HENKEL CORPORATION |
发明人 |
AIZAWA, KENJI;OKABAYASHI, YUTAKA |
分类号 |
C23C22/12;C23C22/36;C23C22/73;C23C22/86 |
主分类号 |
C23C22/12 |
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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