C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/34 (2006.01) C23C 22/37 (2006.01)
Patent
CA 2132336
Heating an aqueous mixture of a fluoroacid such as H2TiF6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide, or carbonate phase before heating was a dispersed solid with sufficiently large particles to scatter light and make the mixture before heating cloudy. The clear mixture produced by heating can either be mixed with water soluble and/or water dispersi- ble polymers that are polyhydroxyalkylamino-substituted polymers and/or copolymers of p-vinyl phenol, or with soluble hexavalent and/or trivalent chromium, to produce a Composition that improves the corrosion resistance of metals treated with the composition, especially after subsequent painting.
Dolan Shawn E.
Reghi Gary A.
Fetherstonhaugh & Co.
Henkel Corporation
Henkel Kommanditgesellschaft Auf Aktien
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