| abstract |
The present invention provides a substrate intermediate body including a substrate having a hole in which a conductor is disposed in a thickness direction, and an adhesion layer formed on a wall surface of the hole, and the adhesion layer contains a cationic functional group Further, a reaction product of a polymer (A) having a weight average molecular weight of 2,000 or more and 1,000,000 or less and a polyvalent carboxylic acid compound (B) having two or more carboxyl groups in one molecule or a derivative thereof. |