发明申请
US20090071573A1 PHOSPHATING SOLUTION WITH HYDROGEN PEROXIDE AND CHELATING CARBOXYLIC ACIDS
审中-公开
具有过氧化氢和螯合羧酸的磷酸盐溶液
- 专利标题： PHOSPHATING SOLUTION WITH HYDROGEN PEROXIDE AND CHELATING CARBOXYLIC ACIDS
- 专利标题（中）： 具有过氧化氢和螯合羧酸的磷酸盐溶液
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申请号： US12055984申请日： 2008-03-26
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公开(公告)号： US20090071573A1公开(公告)日： 2009-03-19
- 发明人: Jan-Willem Brouwer , Jerzy-Tadeusz Wawrzyniak , Jens Kroemer , Maximilian Schoenherr
- 申请人： Jan-Willem Brouwer , Jerzy-Tadeusz Wawrzyniak , Jens Kroemer , Maximilian Schoenherr
- 优先权： DE102005047424.1 20050930
- 主分类号： C23C22/07
- IPC分类号： C23C22/07
摘要：
The invention relates to a phosphating solution and a process for the phosphating of metallic surfaces with aqueous, acidic phosphating solutions that comprise zinc and phosphate ions, at least one source of peroxide and one or more aliphatic chelating carboxylic acids containing 2 to 7 carbon atoms; the phosphating solution having a free acid content of one point or less.
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