Method for corrosion-protective and cleaning pretreatment of metallic components

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United States of America Patent

PATENT NO 11761092
APP PUB NO 20190284700A1
SERIAL NO

16432125

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Abstract

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The present invention relates to a method for the corrosion-protective and cleaning pretreatment of metallic components, produced at least partially from metallic materials from the elements iron, zinc and/or aluminum, with the use of an acid aqueous composition containing, in addition to the water-soluble compounds of the elements Zr and/or Ti causing the conversion of the metal surface, a mixture of an aliphatic diol and an aliphatic saturated polyhydroxy compound. It also comprises a chrome(VI)-free aqueous composition based on the constituents mentioned above which delivers outstanding results in cleaning and simultaneous corrosion-protective conversion of technical metal surfaces in one method step.

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Patent Owner(s)

Patent OwnerAddress
HENKEL AG & CO KGAAHENKELSTRASSE 67 DUESSELDORF 40589

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bongartz, Nils Haan, DE 4 2
Ehmann, Dalija Duesseldorf, DE 2 0
Rossmaier, Henry Duesseldorf, DE 6 102
Wawrzyniak, Jerzy-Tadeusz Duesseldorf, DE 4 4

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