申请人:Toppan Forms Co., LTD.
公开号:US10040960B2
公开(公告)日:2018-08-07
There are provided a silver ink composition which is capable of forming metallic silver having sufficient electrical conductivity without carrying out a heat treatment at high temperatures; and a conductor and communication device which are obtained using this silver ink composition. Such a silver ink composition is characterized by being obtained by blending: a silver carboxylate having a group represented by a formula “—COOAg”; one or more nitrogen-containing compounds selected from the group consisting of amine compounds and quaternary ammonium salts of not more than 25 carbon atoms, ammonia, and ammonium salts obtained by reacting the above amine compounds or ammonia with an acid; and one or more reducing compounds selected from the group consisting of oxalic acid, hydrazine and compounds represented by a general formula (5) shown below (in the formula, R21 represents an alkyl group, alkoxy group or N,N-dialkylamino group of not more than 20 carbon atoms, a hydroxyl group or an amino group): or obtained by preparing a second mixture by supplying carbon dioxide to a first mixture formed by mixing a silver carboxylate having a group represented by a formula “—COOAg” and one or more nitrogen-containing compounds selected from the group consisting of amine compounds and quaternary ammonium salts of not more than 25 carbon atoms, ammonia, and ammonium salts obtained by reacting the amine compounds or ammonia with an acid; and further mixing one or more reducing compounds selected from the group consisting of oxalic acid, hydrazine and compounds represented by a general formula (5) shown below to the mixture: H—C(═O)—R21 (5).
本发明提供了一种银墨组合物,无需进行高温热处理即可形成具有足够导电性的金属银;以及使用这种银墨组合物获得的导体和通信设备。这种银墨组合物的特点是通过混合获得:具有由式"-COOAg "表示的基团的羧酸银;一种或多种含氮化合物,这些化合物选自由不超过 25 个碳原子的胺化合物和季铵盐、氨和通过使上述胺化合物或氨与酸反应而得到的铵盐组成的组;一种或多种还原性化合物,选自草酸、肼和下图通式(5)所代表的化合物(式中,R21 代表不超过 20 个碳原子的烷基、烷氧基或 N,N-二烷基氨基、羟基或氨基):或通过向第一混合物中加入二氧化碳制备第二混合物,该第一混合物是由具有式 "-COOAg "代表的基团的羧酸银和一种或多种含氮化合物混合而成,这些含氮化合物选 自胺化合物、不超过 25 个碳原子的季铵盐、氨和胺化合物或氨与酸反应生成的铵盐所 组成的组;再将一种或多种选自草酸、肼和下图所示通式 (5) 所代表的化合物的还原性化合物混入混合物中:H-C(═O)-R21 (5).