Zinc phosphate conversion coating composition

Details Zinc phosphate conversion coating composition Zinc phosphate conversion coating composition

1981-07-13

1985-02-12

Silverberg, Sam

Metal treatment

Compositions

Heat treating

C23F 710

Patent

active

044989350

ABSTRACT:
An aqueous acidic zinc phosphate coating composition for treating a metal surface to provide a conversion coating thereon, the composition comprising chlorate anion and an aromatic nitro anion in a weight ratio of less than 2:1 to about 1:10.

REFERENCES:
patent: 2295545 (1942-09-01), Clifford et al.
patent: 3146133 (1964-08-01), Lantoin
patent: 3272664 (1966-09-01), Schlossberg et al.
patent: 4292096 (1981-09-01), Murakami
Wiederholt, The Chemical Surface Treatment of Metals, Robert Draper Ltd, Teddington, 1965, pp. 80-83.

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