| 摘要 |
<p>515,983. Precipitating copper. JOHNSON, G. W. (I. G. Farbenindustrie Akt.-Ges.). July 7, 1938, No. 20149. [Class 82 (i)] [Also in Group III] Copper is precipitated from copper solutions, e.g., cuprous chloride, by nickel that has been prepared electrolytically and has not been remelted after its electrolytic deposition. In one form the method is carried out at 100‹C. for 8 hours.</p> |
