A surface treating agent containing a novel phenylnaphthylimidazole compound represented by the following formula is brought into contact with the surface of copper or a copper alloy.
In the formula, when A
1
is a phenyl group, then A
2
represents a 1-naphthyl group or a 2-naphthyl group, and when A
1
is a 1-naphthyl group or a 2-naphthyl group, then A
2
represents a phenyl group; and R represents a hydrogen atom or a methyl group.
一种表面处理剂,包含以下公式所表示的新型苯基
萘亚
咪唑化合物,与
铜或
铜合
金的表面接触。在公式中,当A1为苯基时,A2代表1-
萘基或2-
萘基,当A1为1-
萘基或2-
萘基时,A2代表苯基;而R代表氢原子或甲基基团。