| abstract |
[Problem] In addition to the excellent resist shape and the ability to form a pattern with excellent resolution, PCT resistance (moisture and heat resistance), reflow resistance, electrical insulation (HAST resistance), and electroless plating resistance, heat resistance, content To provide a photosensitive resin composition capable of forming a pattern excellent in agent resistance, chemical resistance (alkali resistance, acid resistance) and adhesion, a permanent mask resist using the same, and a printed wiring board comprising the permanent mask resist. [Solution means] containing (A) acid-modified vinyl group-containing epoxy resin, (B) photoinitiator, (C) nitrogen-containing heterocyclic compound, and (D) photopolymerizable compound, and (C) nitrogen-containing heterocyclic compound A photosensitive resin composition having an average particle diameter of 0.01 to 10 µm, a permanent mask resist using the same, and a printed wiring board. |