US2001003579A1PendingUtilityA1

Process for the reduction of copper oxide

24
Priority: Jun 27, 1996Filed: May 11, 1998Published: Jun 14, 2001
Est. expiryJun 27, 2016(expired)· nominal 20-yr term from priority
Inventors:Joseph A. Corella IiKevin Neigh
C23C 22/63C01G 3/02H05K 3/385C23C 22/83H05K 2203/0315H05K 2203/1157C01P 2006/60H05K 3/38
24
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Claims

Abstract

The present invention provides a method of reducing copper oxide to improve its acid resistance comprising the step of reacting cupric oxide with a reducing agent selected from the group consisting of morpholine borane, ethylene diamine borane, ethylene diamine bisborane, t-butylamine borane, piperazine borane, imidazole borane, and methoxyethylamine borane to form cuprous oxide.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method of reducing copper oxide comprising the step of reacting the copper oxide with a reducing agent selected from the group consisting of morpholine borane, ethylene diamine borane, ethylene diamine bisborane, t-butylamine borane, piperazine borane, imidazole borane, and methoxyethylamine borane.  
     
     
         2 . The method of    claim 1    wherein the reaction occurs in a solution of the reducing agent wherein the concentration of the reducing agent is in the range of approximately 0.1 wt % to the solubility limit of the reducing agent.  
     
     
         3 . The method of    claim 2    wherein the concentration of the reducing agent is in the range of approximately 0.3 wt % to the solubility limit of the reducing agent.  
     
     
         4 . The method of    claim 1    wherein the reaction occurs at temperature in the range of approximately 3° C. to approximately 95° C.  
     
     
         5 . The method of    claim 4    wherein the reaction occurs at temperature in the range of approximately 20° C. to approximately 50° C.  
     
     
         6 . The method of    claim 1    wherein the solvent comprises water and the pH of the solution is in the range of approximately 4 to approximately 14.  
     
     
         7 . The method of    claim 6    wherein the pH of the solution is in the range of approximately 5 to approximately 13.  
     
     
         8 . The method of    claim 7    wherein the pH of the solution is in the range of approximately 7 to approximately 13.  
     
     
         9 . The method of    claim 2    wherein reducing agent is morpholine borane.  
     
     
         10 . The method of    claim 9    wherein concentration of the morpholine borane is in the range of approximately 0.1 wt % to 2.0 wt %.  
     
     
         11 . A method of reducing cupric oxide to cuprous oxide comprising the step of reacting the copper oxide with a reducing agent selected from the group consisting of morpholine borane, ethylene diamine borane, ethylene diamine bisborane, t-butylamine borane, piperazine borane, imidazole borane, and methoxyethylamine borane.  
     
     
         12 . The method of    claim 11    wherein the reaction occurs in a solution of the reducing agent wherein the concentration of the reducing agent is in the range of approximately 0.1 wt % to the solubility limit of the reducing agent.  
     
     
         13 . The method of    claim 12    wherein the concentration of the reducing agent is in the range of approximately 0.3 wt % to the solubility limit of the reducing agent.  
     
     
         14 . The method of    claim 11    wherein the reaction occurs at temperature in the range of approximately 3° C. to approximately 95° C.  
     
     
         15 . The method of    claim 14    wherein the reaction occurs at temperature in the range of approximately 20° C. to approximately 50° C.  
     
     
         16 . The method of    claim 11    wherein the solvent comprises water and the pH of the solution is in the range of approximately 4 to approximately 14.  
     
     
         17 . The method of    claim 16    wherein the pH of the solution is in the range of approximately 5 to approximately 13.  
     
     
         18 . The method of    claim 17    wherein the pH of the solution is in the range of approximately 7 to approximately 13.  
     
     
         19 . The method of    claim 12    wherein reducing agent is morpholine borane.  
     
     
         20 . The method of    claim 19    wherein concentration of the morpholine borane is in the range of approximately 0.1 wt % to 2.0 wt %.

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