Method for the inhibition of corrosion of copper-bearing metallu

Details Method for the inhibition of corrosion of copper-bearing metallu Method for the inhibition of corrosion of copper-bearing metallu

1990-10-03

1992-07-07

Kyle, Deborah L.

Compositions

Preservative agents

Anti-corrosion

252395, 422 16, 210696, C23F 1114

Patent

active

051280655

ABSTRACT:
A method for inhibiting the corrosion of copper or copper-bearing metals in contact with an aggressive aqueous environment by combining a copper corrosion inhibitor with a chelant. Azoles are employed as the corrosion inhibitor. Characteristic chelants include ethylenediamine tetracetic acid nitrilotriacetic acid, citric acid, tartaric acid and dialkyldithiocarbamates.

REFERENCES:
patent: 2618606 (1952-11-01), Schaffer
patent: 4101441 (1978-07-01), Hwa et al.
patent: 4246030 (1981-01-01), Lipinski
patent: 4277359 (1981-07-01), Lipinski
patent: 4387027 (1983-06-01), May et al.
patent: 4406811 (1983-09-01), Christensen et al.
patent: 4744950 (1988-05-01), Hollander
Weisstuch et al., Chelation Compounds as Cooling Water Corrosion Inhibitors, Materials Performance, Apr. 1971.

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