Invention Application
- Patent Title: METHOD FOR TREATING SURFACES OF ALUMINUM CONTAINING SUBSTRATES
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Application No.: US17273522Application Date: 2019-09-05
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Publication No.: US20210355584A1Publication Date: 2021-11-18
- Inventor: Lars Sebralla , Nawel Souad Khelfallah , Axel Schoene , Marie-Pierre Labeau , Guillaume Gody
- Applicant: Rhodia Operations , Chemetall GmbH
- Applicant Address: FR Aubervilliers; DE Frankfurt
- Assignee: Rhodia Operations,Chemetall GmbH
- Current Assignee: Rhodia Operations,Chemetall GmbH
- Current Assignee Address: FR Aubervilliers; DE Frankfurt
- Priority: EP18193165.0 20180907
- International Application: PCT/EP2019/073774 WO 20190905
- Main IPC: C23C22/36
- IPC: C23C22/36 ; C23F11/167 ; C23C22/82

Abstract:
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.
Information query
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