TREATMENT OF COPPER POWDER FOR CONDUCTIVE COATING

摘要

PURPOSE:To obtain a copper powder which maintains consistent conductivity for a long time, by coating a copper powder which has been treated with an aqueous solution containing an amine (derivative) with a boron-nitrogen composite dispersing agent. CONSTITUTION:A copper powder of a particle diameter of 100mum or less is immersed in an aqueous solution containing 0.01-10wt%, based on the copper powder, amine (e.g., cetylamine) or its derivative (e.g., a poly oxyethylenealkylamine) and is dried. 100pts.wt. copper powder thus obtained is mixed with 0.1-20pts.wt. boron-nitrogen composite dispersing agent to coat the copper powder with the dispersing agent.