SYSTEM FOR NICKEL-FREE ZINC PHOSPHATE PRETREATMENT

Disclosed is a substrate pretreatment system, comprising (a) an activating rinse for treating at least a portion of a substrate comprising a dispersion of metal phosphate particles having a D90 particle size of no greater than 10 µm, wherein the metal phosphate comprises divalent or trivalent metals...

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Bibliographische Detailangaben
Hauptverfasser: VOTRUBA-DRZAL, Peter L, KARABIN, Richard F, LEMON, Steven J, MCMILLEN, Mark W
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:Disclosed is a substrate pretreatment system, comprising (a) an activating rinse for treating at least a portion of a substrate comprising a dispersion of metal phosphate particles having a D90 particle size of no greater than 10 µm, wherein the metal phosphate comprises divalent or trivalent metals or combinations thereof; and (b) a pretreatment composition for treating at least a portion of the substrate treated with the activating rinse, comprising zinc ions and phosphate ions, wherein the pretreatment composition is substantially free of nickel. Methods of treating a substrate with the substrate pretreatment system also are disclosed. Substrates treated with the substrate pretreatment system also are disclosed.