PRETREATMENT LIQUID FOR ELECTROLESS NICKEL PLATING, AND PRETREATMENT METHOD TO ELECTROLESS NICKEL PLATING

摘要

PROBLEM TO BE SOLVED: To provide a pretreatment liquid for electroless nickel plating where the generation of the abnormal precipitation of electroless nickel plating is reduced to a sufficient level.;SOLUTION: The pretreatment liquid for electroless nickel plating comprises a heterocyclic compound containing sulfur atoms in the molecule and an organic solvent. In the heterocyclic compound, the concentration is 0.0005 to 3 g/L based on the total volume of the pretreatment liquid for electroless nickel plating, and, provided that the concentration of the heterocyclic compound is defined as M_A(g/L), the concentration of the organic solvent is 5×M_A to 5,000×M_A mL/L based on the total volume of the pretreatment liquid for electroless nickel plating.;COPYRIGHT: (C)2007,JPO&INPIT