PURPOSE: To obtain a copper-containing electroconductive coating composition giving a coating film excellent in initial conductivity, long-term stability of electroconductivity, etc., by mixing a copper powder of a low reduction loss or a copper powder from which a surface oxide layer has been removed with a binder resin for a coating agent and a specified antioxidant.
CONSTITUTION: At least one ester (A) of di(glycerol) borate with an 8W84C dicarboxylic acid (e.g., phthalic acid) is reacted with at least one 5W82C tert. amine (B) having at least one hydroxyl group (e.g., diethylhydroxymethylamine) at such a ratio that one nitrogen atom. is present per boron atom. to obtain an oxidizing agent comprising a charge transfer complex (e.g., a compound of the formula, wherein p=30). A copper powder of a reduction loss ≤0.2wt.% or a copper powder from which a surface oxide layer has been removed by treatment with an organic carboxylic acid (e.g., citric acid) is mixed with a binder resin for a coating agent and said antioxidant to obtain a copper- containing electroconductive coating composition.
YAMADA KIMIKO
YADA KATSUYOSHI
SAKAGUCHI KURAICHI
INOUE HIROSHI
HAMANAKA HIROYOSHI
BORON INTERNATL KK