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公开(公告)号：US20220282381A1
公开(公告)日：2022-09-08
申请号：US17664665
申请日：2022-05-24
申请人： Henkel AG & Co. KGaA
发明人： Ralf Posner , Christina Angenendt , Jan-Willem Brouwer , Frank-Oliver Pilarek , Ulrike Schmidt-Freytag , Kristof Wapner
IPC分类号： C23C22/12
摘要： The present invention relates to a method for phosphating metal surfaces in a layer-forming manner using a colloidal aqueous solution as an activation stage, containing a dispersed particulate constituent, the particulate constituent containing, in addition to dispersed inorganic compounds of phosphates of polyvalent metal cations, polymeric organic compounds as dispersing agents which are composed at least partially of styrene and/or an α-olefin having no more than 5 carbon atoms and are composed at least partially of maleic acid, its anhydride and/or its imide, the polymeric organic compounds additionally comprising polyoxyalkylene units. The cleaning and rinsing stages preceding the activation stage as well as the activation stage itself can be carried out using service water in a resource-saving manner without any loss of activation performance, the colloidal aqueous solution containing at least 0.5 mmol/L of alkaline-earth metal ions dissolved in water.
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公开(公告)号：US11535940B2
公开(公告)日：2022-12-27
申请号：US16275677
申请日：2019-02-14
申请人： Henkel AG & Co. KGaA
发明人： Thomas Moeller , Kristof Wapner , Juergen Stodt , Natascha Henze , Kevin D. Murnaghan , Ralf Posner , Jan-Willem Brouwer , Thomas S. Smith, II , Donald R. Vonk
IPC分类号： C23C22/34
摘要： The invention relates to use of an adhesion promoting organic compound comprising at least one tertiary amine group, bonded via a bridge-constituting divalent radical, with the carbonyl carbon atom of an amide group, wherein the bridge-constituting divalent radical comprises two carbon atoms as bridge atoms, for anticorrosion pretreatment of metallic materials before painting and to aqueous compositions containing the adhesion promoting organic compound which generate conversion layers based on the elements Zr, Ti and/or Si. The present invention further comprises a process for anticorrosion coating of components at least partly manufactured from metallic materials comprising a pretreatment using acidic aqueous compositions according to the invention and subsequent painting. In a further aspect, the invention relates to a metallic substrate having a mixed organic/inorganic coating consisting of oxides, hydroxides and/or oxyfluorides of the elements Zr, Ti and/or Si and of the adhesion promoting organic compounds.
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公开(公告)号：US11230768B2
公开(公告)日：2022-01-25
申请号：US15783171
申请日：2017-10-13
申请人： Henkel AG & Co. KGaA
发明人： Sophie Cornen , Kristof Wapner , Ralf Posner , Natascha Henze , Kirsten Agnes Lill , Michiel Gerard Maas
IPC分类号： C23C22/34 , C23C22/78 , C11D11/00 , C09D133/06 , C09D5/08 , C09D139/06 , C09D5/12 , C23F11/173 , C08L39/04 , C23C22/28 , C23C22/44 , C08L33/10
摘要： A multi-step method for anti-corrosion pretreatment of components made from metallic materials, in which a wet chemical treatment with an aqueous composition (A) containing a dissolved and/or dispersed polymer P, which is substituted with heterocycles containing at least one quaternary nitrogen heteroatom, is followed by a conversion treatment based on water-soluble compounds of the elements Zr, Ti, and/or Si before further anti-corrosion coatings are optionally applied.
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公开(公告)号：US10435805B2
公开(公告)日：2019-10-08
申请号：US15037365
申请日：2013-11-18
IPC分类号： C25D5/02 , C25D5/48 , C25D9/02 , C25D7/00 , C09D5/44 , C25D3/54 , C09D7/40 , C09D7/63 , C08K5/092
摘要： The present invention relates to a method for at least partly coating an electrically conductive substrate with an electrocoat material, comprising at least contacting the substrate with an aqueous coating composition (A) as step (1), which is carried out in at least two successive stages (1a) and (1b), i.e., first at an applied voltage in a range from 1 to 50 V (1a), which is applied over a duration of at least 5 seconds, and then in a range from 50 to 400 V (1b), the voltage applied in (1b) being greater by at least 10 V than the voltage applied in (1a), with (A) comprising at least one cathodically depositable binder (A1), at least one organic monocarboxylic or polycarboxylic acid which has no nitrogen atom(s), and/or anions thereof (A3) and trivalent bismuth (A4), with (A3) and (A4) each being present in (A) in an amount such that their stoichiometry to one another allows at least 50 mol % of (A4) to be present in the form of a salt and/or complex of components (A3) and (A4), with the molar fractions of any zirconium ions and aminopolycarboxylic acids present in (A) to be lower by a factor in each case of 100 or of 15, respectively, than the molar fraction of (A4) present in (A); to a use of (A) for at least partly coating the substrate with an electrocoat material; to at least partly coated electrically conductive substrates obtainable by the method; and to articles or components produced from such substrates.
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公开(公告)号：US20210087693A1
公开(公告)日：2021-03-25
申请号：US17106337
申请日：2020-11-30
申请人： Henkel AG & Co. KGaA
发明人： Christina Angenendt , Jan-Willern Brouwer , Hendrik Bussmann , Franz-Adolf Czika , Ralf Posner , Sebastian Sinnwell , Kristof Wapner
摘要： The present invention relates to an aqueous dispersion as a concentrate for the activation stage of phosphating of metal surfaces, containing a dispersed particulate constituent and a thickener, the particulate constituent containing, in addition to dispersed inorganic compounds of polyvalent metal cations, polymeric organic compounds as dispersing agents which are composed at least partially of styrene and/or an α-olefin having no more than 5 carbon atoms and maleic acid, its anhydride and/or its imide, and which additionally comprise polyoxyalkylene units. The aqueous dispersion is further characterized by a D50 value above 10 μm. The present invention also relates to a method for anti-corrosion pretreatment of the surfaces of a metal material, in particular for zinc phosphating.
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公开(公告)号：US10407578B2
公开(公告)日：2019-09-10
申请号：US15037362
申请日：2013-11-18
发明人： Franz-Adolf Czika , Klaus Lepa , Kristof Wapner
摘要： The present invention relates to an aqueous coating composition (A) having a pH in a range from 4.0 to 6.5 and comprising at least one cathodically depositable binder (A1), a total amount of at least 130 ppm of Bi, based on the total weight of (A), including at least 30 ppm of Bi in a form (A3) in solution in (A) and at least 100 ppm of Bi in a form not in solution in (A), and at least one at least bidentate complexing agent (A5) suitable for complexing Bi, (A5) being present in (A) in a fraction of at least 5 mol %, based on the total amount of the Bi present in (A), for at least partly coating an electrically conductive substrate with an electrocoat material, to a method for producing (A), to the use of (A) for at least partly coating an electrically conductive substrate with an electrocoat material, to a corresponding coating method, to an at least partly coated substrate obtainable by this method, and to a method for setting and/or maintaining the concentration of component (A3) and/or (A4) in the coating composition (A) during the coating method.
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公开(公告)号：US20220290303A1
公开(公告)日：2022-09-15
申请号：US17664701
申请日：2022-05-24
申请人： Henkel AG & Co. KGaA
发明人： Ralf Posner , Christina Angenendt , Jan-Willem Brouwer , Frank-Oliver Pilarek , Ulrike Schmidt-Freytag , Kristof Wapner
摘要： A method for phosphating metal surfaces in a layer-forming manner using a colloidal aqueous solution as an activation stage containing a dispersed particulate constituent, the particulate constituent containing dispersed inorganic compounds of phosphates of polyvalent metal cations; plus polymeric organic compounds as dispersing agents, which are composed at least partially of styrene and/or an α-olefin having no more than 5 carbon atoms and are composed at least partially of maleic acid, its anhydride and/or its imide, the polymeric organic compounds additionally comprising polyoxyalkylene units. In the activation stage of the method according to the invention, the addition of condensed phosphates can be dispensed with such that the content of dissolved condensed phosphates in the colloidal aqueous solution is less than 0.25, based on the phosphate content in the particulate constituent thereof, in each case based on the element P.
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公开(公告)号：US20190177853A1
公开(公告)日：2019-06-13
申请号：US16275677
申请日：2019-02-14
申请人： Henkel AG & Co. KGaA
发明人： Thomas Moeller , Kristof Wapner , Juergen Stodt , Natascha Henze , Kevin D. Murnaghan , Ralf Posner , Jan-Willem Brouwer , Thomas S. Smith, II , Donald R. Vonk
IPC分类号： C23C22/34
摘要： The invention relates to use of an adhesion promoting organic compound comprising at least one tertiary amine group, bonded via a bridge-constituting divalent radical, with the carbonyl carbon atom of an amide group, wherein the bridge-constituting divalent radical comprises two carbon atoms as bridge atoms, for anticorrosion pretreatment of metallic materials before painting and to aqueous compositions containing the adhesion promoting organic compound which generate conversion layers based on the elements Zr, Ti and/or Si. The present invention further comprises a process for anticorrosion coating of components at least partly manufactured from metallic materials comprising a pretreatment using acidic aqueous compositions according to the invention and subsequent painting. In a further aspect, the invention relates to a metallic substrate having a mixed organic/inorganic coating consisting of oxides, hydroxides and/or oxyfluorides of the elements Zr, Ti and/or Si and of the adhesion promoting organic compounds.
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9.发明授权公开(公告)号：US09920205B2
公开(公告)日：2018-03-20
申请号：US15037278
申请日：2013-11-18
发明人： Kristof Wapner , Florian Gaspar , Christian Hammer
CPC分类号： C09D5/4496 , C09D5/08 , C09D5/4488 , C09D5/4492 , C25D13/18
摘要： The present invention relates to an aqueous coating composition (A) having a pH in a range from 4.0 to 6.5 and comprising at least one cathodically depositable binder (A1), a total amount of at least 130 ppm of Bi, based on the total weight of (A), including at least 30 ppm of Bi in a form (A3) in solution in (A) and optionally at least 100 ppm of Bi in a form (A4) not in solution in (A), and at least one at least bidentate complexing agent (A5) suitable for complexing Bi, (A5) being a compound of the general formula (1) or an anion of this compound, for at least partly coating an electrically conductive substrate with an electrocoat material, to a method for producing (A), to the use of (A) for at least partly coating an electrically conductive substrate with an electrocoat material, to a corresponding coating method, to an at least partly coated substrate obtainable by this method, and to a method for setting and/or maintaining the concentration of component (A3) and/or optionally (A4) in the coating composition (A) during the coating method.
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