Patents by Inventor Lars Sebralla
Lars Sebralla has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11958989Abstract: Described herein is a method for treatment of at least one surface of a substrate at least partially made of aluminum and/or an aluminum alloy, including at least a step of contacting said surface with an acidic aqueous composition (A) including one or more metal compounds (M) selected from the group of titanium compounds, zirconium compounds, and hafnium compounds and one or more linear polymers (P) containing (m1) N,N-dimethyl (meth)acryl amide, (m2) vinylphosphonic acid, and (m3) (meth)acrylic acid in form of their polymerized monomeric units, the one or more linear polymers (P) being included in the acidic aqueous composition (A) in an amount of 50 to 5000 ppm. Also described herein is an acidic aqueous composition (A), a master batch to produce the acidic aqueous composition (A), a method of using the acidic aqueous composition (A) for treating surfaces, and substrates comprising the treated surfaces.Type: GrantFiled: September 5, 2019Date of Patent: April 16, 2024Assignees: Rhodia Operations, Chemetall GmbHInventors: Lars Sebralla, Nawel Souad Khelfallah, Axel Schoene, Marie-Pierre Labeau, Guillaume Gody
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Patent number: 11346002Abstract: The present invention relates to an acidic aqueous composition for coating metallic surfaces, particularly of aluminium materials, that comprises, besides water and optionally further components, a) at least one compound selected from the group consisting of organoalkoxysilanes, organosilanols, polyorganosilanols, organosiloxanes and polyorganosiloxanes, b) at least one compound selected from the group consisting of titanium, zirconium, hafnium and aluminium compounds and silicon complex fluoride, and c) at least one copolymer which is stable at least in a segment of the pH range below 6 and which comprises, in alternating configuration, monomer units containing at least one carboxylic and/or phosphonic acid group and monomer units containing no acid group. The invention further relates to a corresponding coating method and to the use of the substrates coated by this method.Type: GrantFiled: December 15, 2015Date of Patent: May 31, 2022Assignee: Chemetall GmbHInventors: Lars Sebralla, Stefan Birkenheuer, Manfred Walter, Nawel Souad Khelfallah
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Patent number: 11261531Abstract: Provided herein is a method for pretreating aluminum materials, particularly aluminum wheels, wherein an aluminum material is successively i) cleaned and subsequently rinsed, ii) optionally subjected to alkaline pickling and subsequently rinsed, iii) optionally contacted with an aqueous composition comprising at least one mineral acid, iv) optionally rinsed and v) contacted with an acidic aqueous composition comprising a) at least one compound selected from the group consisting of titanium, zirconium and hafnium compounds and b) at least one linear terpolymer prepared by controlled radical polymerisation and comprising vinylphosphonic acid monomeric units, hydroxylethyl- and/or hydroxylpropyl-(meth)acrylate monomeric units and (meth)acrylic acid monomeric units, vi) optionally rinsed, vii) optionally contacted with another aqueous composition, viii) optionally rinsed and ix) optionally dried.Type: GrantFiled: September 11, 2018Date of Patent: March 1, 2022Assignees: CHEMETALL GMBH, RHODIA OPERATIONSInventors: Lars Sebralla, Nawel Souad Khelfallah, Manfred Walter, Marie-Pierre Labeau, Guillaume Gody
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Publication number: 20210355584Abstract: Described herein is a method for treatment of at least one surface of a substrate at least partially made of aluminum and/or an aluminum alloy, including at least a step of contacting the surface with an acidic aqueous composition (A) including one or more metal compounds (M) selected from the group of titanium compounds, zirconium compounds, and hafnium compounds and one or more linear polymers (P) containing (m1) hydroxyethyl- and/or hydroxypropyl-(meth)acrylate, (m2) vinylphosphonic acid, and (m3) (meth)acrylic acid in form of their polymerized monomeric units, the one or more linear polymers (P) being included in the acidic aqueous composition (A) in an amount of 50 to 5000 ppm. Also described herein is an acidic aqueous composition (A), a master batch to produce the acidic aqueous composition (A), a method of using the acidic aqueous composition (A) for treating surfaces, and substrates comprising the treated surfaces.Type: ApplicationFiled: September 5, 2019Publication date: November 18, 2021Inventors: Lars Sebralla, Nawel Souad Khelfallah, Axel Schoene, Marie-Pierre Labeau, Guillaume Gody
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Publication number: 20210253870Abstract: Described herein is a method for treatment of at least one surface of a substrate at least partially made of aluminum and/or an aluminum alloy, including at least a step of contacting said surface with an acidic aqueous composition (A) including one or more metal compounds (M) selected from the group of titanium compounds, zirconium compounds, and hafnium compounds and one or more linear polymers (P) containing (m1) N,N-dimethyl (meth)acryl amide, (m2) vinylphosphonic acid, and (m3) (meth)acrylic acid in form of their polymerized monomeric units, the one or more linear polymers (P) being included in the acidic aqueous composition (A) in an amount of 50 to 5000 ppm. Also described herein is an acidic aqueous composition (A), a master batch to produce the acidic aqueous composition (A), a method of using the acidic aqueous composition (A) for treating surfaces, and substrates comprising the treated surfaces.Type: ApplicationFiled: September 5, 2019Publication date: August 19, 2021Inventors: Lars Sebralla, Nawel Souad Khelfallah, Axel Schoene, Marie-Pierre Labeau, Guillaume Gody
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Publication number: 20200299847Abstract: Provided herein is a method for pretreating aluminum materials, particularly aluminum wheels, wherein an aluminum material is successively i) cleaned and subsequently rinsed, ii) optionally subjected to alkaline pickling and subsequently rinsed, iii) optionally contacted with an aqueous composition comprising at least one mineral acid, iv) optionally rinsed and v) contacted with an acidic aqueous composition comprising a) at least one compound selected from the group consisting of titanium, zirconium and hafnium compounds and b) at least one linear terpolymer prepared by controlled radical polymerisation and comprising vinylphosphonic acid monomeric units, hydroxylethyl- and/or hydroxylpropyl-(meth)acrylate monomeric units and (meth)acrylic acid monomeric units, vi) optionally rinsed, vii) optionally contacted with another aqueous composition, viii) optionally rinsed and ix) optionally dried.Type: ApplicationFiled: September 11, 2018Publication date: September 24, 2020Inventors: Lars Sebralla, Nawel Souad Khelfallah, Manfred Walter, Marie-Pierre Labeau, Guillaume Gody
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Publication number: 20200181778Abstract: The present invention relates to an acidic aqueous composition for coating metallic surfaces, particularly of aluminium materials, that comprises, besides water and optionally further components, a) at least one compound selected from the group consisting of organoalkoxysilanes, organosilanols, polyorganosilanols, organosiloxanes and polyorganosiloxanes, b) at least one compound selected from the group consisting of titanium, zirconium, hafnium and aluminium compounds and silicon complex fluoride, and c) at least one copolymer which is stable at least in a segment of the pH range below 6 and which comprises, in alternating configuration, monomer units containing at least one carboxylic and/or phosphonic acid group and monomer units containing no acid group. The invention further relates to a corresponding coating method and to the use of the substrates coated by this method.Type: ApplicationFiled: December 15, 2015Publication date: June 11, 2020Inventors: Lars Sebralla, Stefan Birkenheuer, Manfred Walter, Nawel Souad Khelfallah
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Patent number: 9511392Abstract: A method for coating metal surfaces, in particular surfaces of wheels made of an aluminum alloy, in a multi-step method, wherein the metallic surfaces are first contacted with an aqueous composition predominantly containing silane/silanol/siloxane/polysiloxane and thereafter contacted with an aqueous composition predominantly containing at least one phosphonic compound.Type: GrantFiled: March 3, 2010Date of Patent: December 6, 2016Assignee: Chemetall GmbHInventors: Lars Sebralla, Manfred Walter
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Publication number: 20120070674Abstract: A method for coating metal surfaces, in particular surfaces of wheels made of an aluminium alloy, in a multi-step method, wherein the metallic surfaces are first contacted with an aqueous composition predominantly containing silane/silanol/siloxane/polysiloxane and thereafter contacted with an aqueous composition predominantly containing at least one phosphonic compound.Type: ApplicationFiled: March 3, 2010Publication date: March 22, 2012Inventors: Lars Sebralla, Manfred Walter
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Patent number: 7344757Abstract: A process for the treatment or pretreatment of containers made of aluminum, aluminum-containing alloys, magnesium-containing alloys, iron-containing materials such as steel, coated iron-containing materials such as galvanized steel, or aluminum alloys, tinplate, brass or bronze, in particular the treatment or pretreatment of bags, tubs, bottles, cans, canisters, casks or tubes, wherein the process steps for the treatment or pretreatment take place at the same time as the application of the lubricant, with the agent used for the pretreatment or treatment, which also contains or is a lubricant, not essentially consisting of titanium or zirconium with fluoride and polymer, the lubricant possibly being formed first in the agent for the pretreatment or treatment or in the formation of the coating produced therefrom.Type: GrantFiled: May 21, 2001Date of Patent: March 18, 2008Assignee: Chemetall GmbHInventors: Karl-Heinz Bischoff, Mats Eriksson, Norbert Kliehm, Lars Sebralla, Markus Wahren, Manfred Walter
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Publication number: 20040043907Abstract: The invention relates to a process for the treatment or pretreatment of containers made of aluminium, aluminium-containing alloys, magnesium-containing alloys, iron-containing materials such as steel, coated iron-containing materials such as galvanised steel, galvanised metallic materials or metallic materials coated with aluminium or aluminium alloys, tinplate, brass or bronze, in particular the treatment or pretreatment of bags, tubs, bottles, cans, canisters, casks or tubes, in which the process steps for the treatment or pretreatment coincide with the application of the lubricant, with the agent used for the pretreatment or treatment and which also contains and/or is a lubricant essentially not comprising titanium and/or zirconium together with fluoride and polymer, the lubricant optionally being formed only in the agent for the pretreatment or treatment and/or being formed during the formation of the coating produced therefrom.Type: ApplicationFiled: August 8, 2003Publication date: March 4, 2004Inventors: Karl-Heinz Bischoff, Mats Eriksson, Norbert Kliehm, Lars Sebralla, Markus Wahren, Manfred Walter
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Patent number: 6488990Abstract: Sequentially applying two different coatings, in two steps, to metallic surfaces. Metallic surfaces are contacted at temperatures from 10-100° C.Type: GrantFiled: October 6, 2000Date of Patent: December 3, 2002Assignee: Chemetall GmbHInventors: Sean M. Wetterer, Lars Sebralla, Manfred Walter
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Patent number: 6436475Abstract: The invention relates to a method for treating metallic surfaces consisting of zinc, magnesium or aluminium or of the alloys of zinc, magnesium or aluminium, to which lacquer, coatings of plastic material, paint, sealants or adhesives are applied after treatment. The treatment of the metallic surfaces takes place at between 10° C. and 100° C. by immersion, spraying or rolling with an aqueous solution. The solution has a pH of between 2 and 13 and contains one or more compounds of the type XYZ at a concentration of between 10−5 and 1 mol/l. Y is an organic group containing between 2 and 50 C atoms and has a straight-chain structure. X is a COOH, HSO3, HSO4, (OH)2PO, (OH)2PO2, (OH)(OR′)PO or (OH)(OR′)PO2 group. Z is a OH, SH, NH2, NHR′, CN, CH═CH2, OCN, epoxy, CH2═CR″—COO, acrylamide, COOH, (OH)2PO, (OH)2PO2, (OH)(OR′)PO or (OH)(OR′)PO2 group. R′ is an alkyl group with between 1 and 4 C atoms.Type: GrantFiled: December 17, 1999Date of Patent: August 20, 2002Assignee: Chemetall GmbHInventors: Hans-Jürgen P. Adler, Christian Bram, Ralf Feser, Evelin Jähne, Christian Jung, Iris Mäge, Jürgen Rudolph, Lars Sebralla, Martin Stratmann