Protective compositions for steel surfaces and the process for t

Details Protective compositions for steel surfaces and the process for t Protective compositions for steel surfaces and the process for t

1980-03-17

1981-10-06

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 615Z, 148 315, C23F 710

Patent

active

042933498

ABSTRACT:
The invention refers to new compositions for protecting steel surfaces from the oxidizing action of atmosphere.
The essential components are: glucosides of pyrogallic and/or allagic acid of molecular weight between 270 and 1200; phosphoric acid, phosphates of bivalent transition metals such as Zn and Mn and nitrates of bivalent metals such as Zn and Mn.

REFERENCES:
patent: 2502441 (1950-04-01), Dodd
patent: 2854368 (1958-09-01), Shreir
patent: 2863793 (1958-12-01), Cerma
patent: 4017334 (1977-04-01), Matsushima et al.

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