Scale reducer for zinc phosphating solutions

Details Scale reducer for zinc phosphating solutions Scale reducer for zinc phosphating solutions

1976-01-29

1977-11-08

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 627, C23F 710

Patent

active

040574407

ABSTRACT:
The hard rock-like scale formed on zinc phosphating equipment is rendered soft and dispersible by adding a scale-reducing amount of dialkyl triamine pentakis methylene phosphonic acid or its alkaline salt in the zinc phosphating solution.

REFERENCES:
patent: 3336221 (1967-08-01), Ralston
patent: 3459600 (1969-08-01), Sedlak
patent: 3738937 (1973-06-01), Kausky
patent: 3778377 (1973-12-01), Clark
patent: 3816517 (1974-06-01), Krueger et al.
patent: 4000012 (1976-12-01), Burrows et al.

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