发明公开
- 专利标题： Metal surface-treating method
- 专利标题（中）： Verfahren zurMetalloberflächenbehandlung
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申请号： EP01401238.9申请日： 2001-05-15
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公开(公告)号： EP1156137A1公开(公告)日： 2001-11-21
- 发明人: Hiroshi, Chihara, Nippon Paint Co., Ltd. , Kenji, Tsuge, Nippon Paint Co., Ltd. , Yutaka, Kinose, Nippon Chemical Industrial Co. Ltd , Toru, Hata, Nippon Chemical Industrial Co. Ltd. , Eriko,Okuno, Nippon Chemical Industrial Co. Ltd. , Takahiro, Nagayama
- 申请人： Nippon Paint Co., Ltd. , NIPPON CHEMICAL INDUSTRIAL COMPANY LIMITED
- 申请人地址： 1-2 Oyodokita 2-chome, Kita-ku Osaka-shi, Osaka 531-0077 JP
- 专利权人： Nippon Paint Co., Ltd.,NIPPON CHEMICAL INDUSTRIAL COMPANY LIMITED
- 当前专利权人： Nippon Paint Co., Ltd.,NIPPON CHEMICAL INDUSTRIAL COMPANY LIMITED
- 当前专利权人地址： 1-2 Oyodokita 2-chome, Kita-ku Osaka-shi, Osaka 531-0077 JP
- 代理机构： Hubert, Philippe
- 优先权： JP2000141313 20000515; JP2001008717 20010117
- 主分类号： C23C22/73
- IPC分类号： C23C22/73 ; C23C22/13 ; C23C22/18
摘要：
This invention provides a metal surface-treating method
which comprises a chemical conversion step of dipping a substrate in an acidic aqueous zinc phosphate solution,
and using an aqueous zinc nitrite solution as an accelerator,
said aqueous zinc nitrite solution being substantially free of calcium ion and containing 0 to 6500 ppm of sodium ion and 0 to 20 ppm of sulfate ion in case of assuming the concentration of zinc nitrite [Zn(NO 2 ) 2 ] therein to be 10 weight % as NO 2 .
which comprises a chemical conversion step of dipping a substrate in an acidic aqueous zinc phosphate solution,
and using an aqueous zinc nitrite solution as an accelerator,
said aqueous zinc nitrite solution being substantially free of calcium ion and containing 0 to 6500 ppm of sodium ion and 0 to 20 ppm of sulfate ion in case of assuming the concentration of zinc nitrite [Zn(NO 2 ) 2 ] therein to be 10 weight % as NO 2 .
公开/授权文献
- EP1156137B1 Metal surface-treating method 公开/授权日：2004-07-21
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