Process for corrosion-protecting pretreatment of a metallic surface containing steel, galvanized steel, aluminum, an aluminum alloy, magnesium and/or a zinc-magnesium alloy

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United States of America Patent

PATENT NO 12043753
APP PUB NO 20190249030A1
SERIAL NO

16332858

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Abstract

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Described herein is an improved process for anticorrosion pretreatment of a metallic surface including steel, galvanized steel, aluminum, an aluminum alloy, magnesium and/or a zinc-magnesium alloy, wherein the metallic surface is brought into contact with i) an acidic aqueous composition A which includes a1) at least one compound selected from the group consisting of titanium, zirconium and hafnium compounds, and with ii) an aqueous composition B which includes b1) at least one (meth)acrylate resin and b2) at least one phenol resin, where the metallic surface is brought into contact firstly with the composition A and then with the composition B and/or firstly with the composition B and then with the composition A and/or simultaneously with the composition A and the composition B.

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Patent Owner(s)

Patent OwnerAddress
CHEMETALL GMBH60487 FRANKFURT AM MAIN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Birkenheuer, Stefan Shanghai, DE 5 3
Chmielewski, Dietmar Romanshorn, CH 6 12
Hecker, Carina Frankfurt am Main, DE 4 0
Sauer, Oliver Frankfurt am Main, DE 5 0
Schatz, Daniel Frankfurt am Main, DE 13 4

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