Protective coating composition for circuit board

A method of forming a protective coating for circuit boards, the method comprising:

• performing, at least once, a process of applying a protective coating composition on at least a portion of a surface of a circuit board on which an electrical/electronic component is mounted and then drying the protective coating composition,
• wherein the protective coating composition comprises:
• a polyketone, or a combination of a polyketone and an ethylene vinyl alcohol resin;
• a fluorine wax;
• and
• a solvent, and
• wherein an amount of the wax in the protective coating composition is 0.5 wt % or less.

A laminate comprising:

• a circuit board on which an electrical/electronic component is mounted;
• and
• a protective coating formed on at least a portion of a surface of the circuit board,
• wherein the protective coating comprises a polyketone, or a combination of a polyketone and an ethylene vinyl alcohol resin and a fluorine wax, and
• wherein an amount of the wax in the protective coating is 9.09 wt % or less.