| 摘要 |
PURPOSE:To obtain electrically conductive paste having excellent skinning properties and electrical conductivity after coating and curing, comprising a thermosetting resin binder consisting essentially of a specific phenol oligomer, copper powder and a diluent. CONSTITUTION:(A) A thermosetting resin binder consisting essentially of a phenol oligomer which is a condensate of cresol and formaldehyde, contains 3-7 phenolic nuclei and at least three methylol groups, wherein the phenolic nuclei are mutually linked through dimethylene ether bond, is blended with (B) copper powder having <=200mum average particle diameter and (C) a diluent to give the weight ratio of the components A and B of 15-25:85-75 to give paste. The amount of the component C is preferably 5-50pts.wt. based on 100pts.wt. sum of the components A and B.
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