| abstract |
An electrodeposition solution using polymer particles made of polyamic acid, in which the dispersibility of polymer particles contained in the electrodeposition solution is greatly improved without lowering the coulomb efficiency during electrodeposition. An electrodeposition solution for forming an insulating film is provided. In a water-dispersed insulating film-forming electrodeposition solution 11 containing polymer particles, an organic solvent, a basic compound and water, the polymer particles are made of polyamic acid having a predetermined structural unit, and the polymer particles are based on volume. Has a median diameter (D50) of 0.1 to 0.7 μm. [Selection] Figure 1 |