| 摘要 |
PURPOSE:To obtain a resin compsn. useful for obtaining a printed circuit board which has a high resolution, is easily developed with a 1,1,1-trichloroethane-based org. solvent or an aq. alkali soln., is resistant to an org. solvent such as isopropyl alcohol and to a plating soln. in electroless plating, and also is resistant to soldering heat. CONSTITUTION:Both a resin compsn. and a permanent resist resin compsn. for a printed circuit board comprise a urethane acrylate or methacrylate compd. having at least one isocyanate group, an epoxy acrylate or methacrylate compd., a diluent comprising photopolymerizable and thermally reactive monomers, and a photopolymn. initiator. |
