| 摘要 |
PURPOSE:To provide the subject agent comprising noble metal-activated copper prepared by integrally attaching a noble metal on the particle surface of copper powder in such a state as the particle surface of the copper powder is partially exposed or comprising a modified product thereof prepared by further attaching a basic organic dibasic acid copper salt or basic copper carbonate salt to the surface of the noble metal-activated copper. CONSTITUTION:The subject inhibiting agent contains as an active ingredient a noble metal-activated copper prepared by integrally attaching a noble metal (e.g., silver, gold or platinum) to the particle surface of metal copper powder in an amount of <=0.4 pt.wt. (preferably 0.35-0.3X10<-3> pt.wt.) per 100 pts.wt. of the metal copper in such a state as the particle surface is partially exposed or a noble metal-activated copper modified product prepared by integrally attaching a basic organic dibasic acid copper salt (e.g., adipic acid copper salt) or basic copper carbonate salt to the surface of the noble metal-activated copper. The subject composition comprises the noble metal-activated copper or the modified product thereof and a binder (e.g., a coating vehicle or polymer cement covering agent) for keeping the agent in a dispersion state. The agent contains readily ionized copper, is stable for a long period without changing the properties thereof and does not pollute environments. |
