| 摘要 |
The present invention relates to dissolving copper oxide, whether cuprous or cupric oxide. A polyamine selected from a group consisting of ethylenediamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine is mixed with a compound selected from a second group consisting of salicyclic acid, metahydroxybenzoic acid, parahydroxybenzoic acid, a dihydroxybenzoic acid, 5-5'-methylenedisalicyclic acid, 3-hydroxy-2-naphthoic acid and salts thereof with an aliphatic polyamine of the first class and with ammonium hydroxide in an alkaline water solution or a salicylate of one of these amines can be used with ammonium hydroxide. The composition can be used cold but will preferably be used in a temperature range between 150 DEG F. and the boiling temperature at the particular pressure.
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