Coating solution for metal surface

Details Coating solution for metal surface Coating solution for metal surface

1976-12-30

1979-04-10

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 627, C23F 714

Patent

active

041486706

ABSTRACT:
An acidic aqueous coating solution for forming on an aluminum surface a coating which is corrosion resistant and to which overlying coatings adhere excellently is disclosed. The coating solution contains compounds of zirconium and/or titanium, fluoride and phosphate in dissolved form, and optionally, polyhydroxy compounds having 6 or fewer carbon atoms. The coating solution is capable of forming on an aluminum surface a uniformly colorless and clear coating so that the coated surface has the appearance of the underlying metal surface, that is, the coating can be formed without changing the appearance of the metal surface.

REFERENCES:
patent: 2813814 (1957-11-01), Goodspeed et al.
patent: 2820731 (1958-01-01), Heinzelman
patent: 3109757 (1963-11-01), Reinhold
patent: 3682713 (1972-08-01), Ries et al.
patent: 3964936 (1976-06-01), Das
patent: 4017334 (1977-04-01), Matsushima et al.

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