C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/80 (2006.01) C23C 22/05 (2006.01)
Patent
CA 2164008
An otherwise conventional Jernstedt salt dispersion for activating metal surfaces to improve the quality of subsquently deposited phosphate conversion coatings on the activated metal surface is stabilized against deterioration is storage for at least six months by utilizing in the dispersion a mixture of sodium and potassium salts, preferably condensed phosphate salts, in such amounts that the ratio of potassium to titanium is within the range from 8.0:1.0 to 40:1.0 and the ratio of potassium to sodium is within the range from 0.9:1.0 to about 2.5:1Ø
Une autre forme de dispersion traditionnelle de sel de Jernstedt, servant à activer des surfaces métalliques afin d'améliorer la qualité des revêtements de conversion du phosphate déposé ultérieurement sur la surface métallique activée, est stabilisée contre la détérioration au stockage sur une période d'au moins six mois grâce à l'emploi, dans la dispersion, d'un mélange de sels de sodium et de potassium, de préférence des sels de phosphate condensés, en quantités telles que le rapport du potassium et du titane soit compris entre 8:1 et 40:1, et que le rapport du potassium et du sodium soit compris entre 0,9:1 et environ 2,5:1.
Fetherstonhaugh & Co.
Henkel Corporation
Henkel Kommanditgesellschaft Auf Aktien
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