Aqueous dip-coating composition for electroconductive substrates, comprising dissolved bismuth

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United States of America Patent

PATENT NO 9920205
SERIAL NO

15037278

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Abstract

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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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Patent Owner(s)

  • BASF COATINGS GMBH;HENKEL AG & CO. KGAA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gaspar, Florian Solingen, DE 2 3
Hammer, Christian Duesseldorf, DE 38 60
Wapner, Kristof Duesseldorf, DE 13 4

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