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公开(公告)号：US11499237B2
公开(公告)日：2022-11-15
申请号：US16817044
申请日：2020-03-12
申请人： Henkel AG & Co. KGaA
发明人： Volker Geick , Kathrin Schaeuble
摘要： The present invention relates to a method for the anti-corrosion treatment of components produced from aluminum, in particular casting parts such as vehicle rims, comprising a pretreatment stage and subsequent coating, wherein the pretreatment stage in turn includes a pickle on the basis of sulfuric acid aqueous solutions containing water-soluble compounds of the element Ti and at least one α-hydroxycarboxylic acid which is carried out upstream of an acidic conversion treatment on the basis of an acidic aqueous solution containing water-soluble compounds of the elements Zr and/or Ti.
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2.发明申请公开(公告)号：US20200208273A1
公开(公告)日：2020-07-02
申请号：US16817044
申请日：2020-03-12
申请人： Henkel AG & Co. KGaA
发明人： Volker Geick , Kathrin Schaeuble
摘要： The present invention relates to a method for the anti-corrosion treatment of components produced from aluminum, in particular casting parts such as vehicle rims, comprising a pretreatment stage and subsequent coating, wherein the pretreatment stage in turn includes a pickle on the basis of sulfuric acid aqueous solutions containing water-soluble compounds of the element Ti and at least one a-hydroxycarboxylic acid which is carried out upstream of an acidic conversion treatment on the basis of an acidic aqueous solution containing water-soluble compounds of the elements Zr and/or Ti.
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公开(公告)号：US20190010610A1
公开(公告)日：2019-01-10
申请号：US16106759
申请日：2018-08-21
申请人： Henkel AG & Co. KGaA
发明人： Joerg Riesop , Volker Geick
摘要： A method for anti-corrosion pre-treatment of metal substrates using zirconium-based aqueous anti-corrosion agents comprising polycyclic hydrocarbons that have at least one anellated benzene ring, each having at least two ring-substituted hydroxyl groups in ortho position to each other. The aqueous anti-corrosion agent can be substantially free both of passivating chromium-containing compounds and of fluoride-containing compounds that pickle the metal substrate. Pre-treatment by drying (dry-in-place method) is especially advantageous. Accordingly, the method according to the invention is suitable in particular for the pre-treatment of metal strip, wherein excellent anti-corrosion results are achieved on surfaces of aluminum or steel. The invention further relates to a method for producing coated can lids from aluminum strip by using the previously mentioned zirconium-based anti-corrosion agent. A further aspect comprises an aqueous concentrate for providing the ready-to-use anti-corrosion agents.
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公开(公告)号：US11142827B2
公开(公告)日：2021-10-12
申请号：US16106759
申请日：2018-08-21
申请人： Henkel AG & Co. KGaA
发明人： Joerg Riesop , Volker Geick
IPC分类号： C23C22/05 , C23C22/34 , C23C22/56 , C23C22/53 , C23C22/48 , B21D28/00 , C23F11/04 , C23C22/50
摘要： A method for anti-corrosion pre-treatment of metal substrates using zirconium-based aqueous anti-corrosion agents comprising polycyclic hydrocarbons that have at least one anellated benzene ring, each having at least two ring-substituted hydroxyl groups in ortho position to each other. The aqueous anti-corrosion agent can be substantially free both of passivating chromium-containing compounds and of fluoride-containing compounds that pickle the metal substrate. Pre-treatment by drying (dry-in-place method) is especially advantageous. Accordingly, the method according to the invention is suitable in particular for the pre-treatment of metal strip, wherein excellent anti-corrosion results are achieved on surfaces of aluminum or steel. The invention further relates to a method for producing coated can lids from aluminum strip by using the previously mentioned zirconium-based anti-corrosion agent. A further aspect comprises an aqueous concentrate for providing the ready-to-use anti-corrosion agents.
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公开(公告)号：US20200299518A1
公开(公告)日：2020-09-24
申请号：US16893738
申请日：2020-06-05
申请人： Henkel AG & Co. KGaA
发明人： Ard de Zeeuw , Todd Bryden , Andreas Arnold , Ramona Hochstrate , Volker Geick
摘要： The present invention relates to a method for providing electrically insulating and anti-corrosive coatings on electrical steel strip by using a phosphate-free aqueous dispersion. Furthermore, the invention relates to such an aqueous dispersion which is particularly suitable for providing electrically insulating and anti-corrosive coatings on electrical steel strip. The aqueous dispersion of the present invention is substantially free of phosphates and organic compounds and comprises silicates dissolved in water as an inorganic binder which forms the coating, and a mixture of oxide pigments of the elements titanium and aluminum. The subject matter of the invention also comprises a laminated electrical steel strip which is made from the electrical steel strip produced in the method according to the invention or from electrical steel strip coated with an aqueous dispersion according to the invention.
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