Process and composition for sealing a conversion coated surface

Details Process and composition for sealing a conversion coated surface Process and composition for sealing a conversion coated surface

1987-03-23

1989-05-09

Lieberman, Paul

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1414, 106 1421, 106 1444, C23C 1846

Patent

active

048286150

ABSTRACT:
A solution containing pentavalent vanadium is applied to a metal surface subsequent to conversion coating. The solution contains pentavalent vanadium ions which may be obtained from a sodium metavanadate or sodium metavanadate/orthovanadate solution that is acidified with an acid. Vanadium pentoxide may be dissolved in a base such as sodium hydroxide, potassium hydroxide or lithium hydroxide to form a basic concentrate which can be acidified conveniently after dilution. In one disclosed embodiment, the solution comprises vanadium pentoxide, sodium hydroxide, nitric acid and water which is applied to a phosphate conversion coated surface than rinsed with deionized water prior to priming and painting.

REFERENCES:
patent: 2989448 (1961-06-01), France
patent: 3930081 (1975-12-01), Shinomiya
patent: 4039582 (1977-08-01), Nasyrov
patent: 4233088 (1980-11-01), Kronstein
patent: 4298404 (1981-11-01), Greene
patent: 4485190 (1984-11-01), Sherif
patent: 4548792 (1985-10-01), Rodriguez
patent: 4610732 (1986-09-01), Sasaki

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