Methods and compositions for removing copper and copper oxides f

Details Methods and compositions for removing copper and copper oxides f Methods and compositions for removing copper and copper oxides f

1985-02-15

1986-05-06

Hunter, Jeanette

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 29, 252 80, 252102, 252156, C23G 102

Patent

active

045869618

ABSTRACT:
Methods and compositions for removing copper and copper oxide deposits from metal surfaces including surfaces formed of austenitic, nickel-chromium and other similar alloys without adversely affecting such surfaces are provided. The copper and copper oxide deposits are dissolved in an aqueous ammoniacal cleaning solution which includes one or more alkali metal or ammonium perborate oxidizing agents.

REFERENCES:
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patent: 3000767 (1961-09-01), Elliott
patent: 3034851 (1962-05-01), Dustman
patent: 3460989 (1969-08-01), Rusch
patent: 3664870 (1972-05-01), Oberhofer et al.
patent: 3738867 (1973-06-01), Franz
patent: 4452643 (1984-06-01), Martin et al.

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