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公开(公告)号：EP1483429A1
公开(公告)日：2004-12-08
申请号：EP02733925.8
申请日：2002-04-01
IPC分类号： C23C22/07
摘要： A conversion coating composition and method of applying the conversion coating composition to magnesium and magnesium alloy articles prior to painting to prevent corrosion. The conversion coating composition comprises a source of vanadate ions, a material comprising phosphorus, and nitric acid or a source of nitrate ions. In addition, the composition may also contain boric acid or a source of borate ions and a source of fluoride ions or a source of fluoroborate ions.
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公开(公告)号：EP1406984B1
公开(公告)日：2007-07-04
申请号：EP02787176.3
申请日：2002-04-04
发明人： WOJCIK, Gerald
IPC分类号： C09D105/08 , C09D5/08 , C09K15/06 , C09K15/12 , C09K15/32 , C08B37/08 , B05D3/00 , C23C22/56 , C08B37/00
CPC分类号： C23C22/56 , C08B37/003 , C09D105/08
摘要： A composition and process for inhibiting the corrosion of metallic substrates is revealed. The process utilizes an aqueous treatment solution comprising chitosan which has been reacted with an acid selected from the group consisting of phosphonic acids, carboxylic acids and mixtures thereof. The composition and process are particularly useful in providing corrosion protection for aluminium alloys.
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公开(公告)号：EP1492902A1
公开(公告)日：2005-01-05
申请号：EP03708992.7
申请日：2003-02-07
发明人： WOJCIK, Gerald , GIRARD, Justin , BERRY, Robert , BAUER, Richard
IPC分类号： C23C22/48
摘要： A method of forming a conversion layer on a metallic surface and a composition usable in the method are provided. The composition is an aqueous solution comprising a source of tungstate ions and a soluble material comprising zirconium. The method provides a conversion coating on a surface that can then be painted or otherwise treated. The conversion coatings of the present invention are minimally affected by heating and/or baking, unlike chromate conversion coatings of the prior art.
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公开(公告)号：EP1406984A2
公开(公告)日：2004-04-14
申请号：EP02787176.3
申请日：2002-04-04
发明人： WOJCIK, Gerald
CPC分类号： C23C22/56 , C08B37/003 , C09D105/08
摘要： A composition and process for inhibiting the corrosion of metallic substrates is revealed. The process utilizes an aqueous treatment solution comprising chitosan which has been reacted with an acid selected from the group consisting of phosphonic acids, carboxylic acids and mixtures thereof. The composition and process are particularly useful in providing corrosion protection for aluminium alloys.
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5.发明公开
公开(公告)号：EP1339503A1
公开(公告)日：2003-09-03
申请号：EP01916454.0
申请日：2001-03-07
IPC分类号： B05D3/10
CPC分类号： C23C22/78 , B05D3/102 , B05D7/51 , B05D2202/25 , C23C22/56
摘要： A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in treating the metal surface prior to application of the organic coating. The adhesion promoting composition comprises a nitro sulfonic acid. A chromating step is optionally employed.
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