Coating solution for metal surfaces

Details Coating solution for metal surfaces Coating solution for metal surfaces

1980-07-03

1982-02-02

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 614R, C23F 706

Patent

active

043137695

ABSTRACT:
In an acidic aqueous coating solution which contains zirconium, hafnium or titanium, and fluoride and which is effective in forming on an aluminum surface a non-chromate coating to which overlying coatings adhere tightly and which is corrosion resistant and resists being discolored when subjected to hot water, the improvement comprising including in said coating solution a surfactant in an amount such that a coating formed from the surfactant-containing coating solution has an improved tendency to resist being discolored by hot water.

REFERENCES:
patent: 4054466 (1977-10-01), King et al.
patent: 4148670 (1979-04-01), Kelly
patent: 4191596 (1980-03-01), Dollman
Payne, Organic Coating Technology, vol. 1, (1954), John Wiley & Son, pp. 5543/8556.

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