Rust preventing treatment of metal-plated steel materials

Details Rust preventing treatment of metal-plated steel materials Rust preventing treatment of metal-plated steel materials

1979-06-05

1981-01-27

Smith, John D.

Metal treatment

Compositions

Heat treating

148 62, C23F 700

Patent

active

042473446

ABSTRACT:
A rust preventing treatment for a metal-plated steel product which comprises treating the metal-plated steel product with an aqueous solution containing 0.01% to 10% by weight of tannic acid on the basis of the aqueous solution and 0.001% to 10% by weight of a water-soluble or water-dispersible polymer which is stable when mixed with the tannic acid to form a corrosion resistant film on the surface of the metal-plated steel product.

REFERENCES:
patent: 3968313 (1976-07-01), Pearlman
patent: 3975214 (1976-08-01), Kulick et al.
patent: 4039353 (1977-08-01), Kulick et al.

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