Patent ID: 8092617

Claim:
A composition for coating or touching-up or both coating and touching-up a metal surface, said composition comprising water and: (A) from about 4.5 millimoles per kilogram to about 27 millimoles per kilogram of a component of fluorometallate anions and mixtures of fluorometallate anions, each of said anions comprising: (i) at least four fluorine atoms; and (ii) at least one atom of an element selected from the group consisting of titanium, zirconium, hafnium, silicon, aluminum, and boron, and, optionally, one or both of (iii) at least one ionizable hydrogen atom; and (iv) at least one oxygen atom; (B) at least 6.5 g/l to about 46 g/l of trivalent chromium cations; said composition being substantially free of hexavalent chromium.