There is provided a process comprising mixing a divalent copper oxide with a reducing agent in the presence of a complexing agent and a protective colloid in a liquid medium to thereby produce copper microparticles without formation of a univalent copper oxide from the divalent copper oxide. Further,...http://www.google.com.tw/patents/US7828872?utm_source=gb-gplus-share專利 US7828872 - Copper microparticle and process for producing the same
