Composition and process for inhibiting corrosion of ferrous or n

Details Composition and process for inhibiting corrosion of ferrous or n Composition and process for inhibiting corrosion of ferrous or n

1984-06-21

1986-01-14

Silverberg, Sam

Metal treatment

Compositions

Heat treating

148 615Z, 148 315, C23F 710

Patent

active

045643970

ABSTRACT:
Phosphate coated ferrous and non-ferrous metal surfaced articles are passivated without treatment by a chromium compound by rinsing with an aqueous solution of urea or a urea derivative, or an acidulated urea or urea derivative in an amount sufficient to form a corrosion resistant barrier on the surface which is receptive to synthetic resinous coating compositions.

REFERENCES:
patent: 2817610 (1957-12-01), Newell
patent: 3493440 (1970-02-01), Ashdown
patent: 3776782 (1973-12-01), Kiefer
patent: 3816185 (1974-06-01), Toledo
patent: 4381249 (1983-04-01), Bouffard

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