C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 16/02 (2006.01)
Patent
CA 2584654
Chromate-free treatments and compositions for applying a conversion or passivation coating for metals, more particularly zinc coated metal surfaces. The methods of the invention comprise contacting the requisite metal surface with a phosphonomethylated polyamine. Other aspects of the invention involve methods and compositions in which the following optional components can be included: fluoacid, silane, inorganic phosphorus, acid, latex film forming component and pH adjustment agent.
L'invention concerne des traitements dépourvus de chromate et des compositions destinées à appliquer un revêtement de conversion ou de passivation destiné à des métaux, plus particulièrement des surfaces métalliques revêtues de zinc. Les procédés de l'invention consistent à mettre en contact la surface métallique voulue avec une polyamine phosphonométylée. D'autres aspects de cette invention impliquent des procédés et des compositions dans lesquels les composants facultatifs suivants peuvent être contenus: du fluoacide, du silène, du phosphore minéral, de l'acide, un composant formant un film latex et un agent de régulation du pH.
Carey William S.
Melzer Jeffrey I.
Raab Michael T.
Szwajkowski Edmund P.
Chemetall Corp.
Company General Electric
Craig Wilson And Company
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