abstract |
PROBLEM TO BE SOLVED: To provide a flame-retardant adhesive composition using a halogen-free flame retardant excellent in electric insulation and flame retardancy, and a flame-retardant adhesive film and a flame-retardant adhesive using the same. Provided are a metal foil with an agent and a printed wiring board. SOLUTION: Epoxy resin, nitrilotris (methylene) phosphonic acid metal salt, nitrilotris (methylene) Melamine phosphonate, 1-hydroxyethylidene- A flame-retardant adhesive containing one or more phosphonates obtained from a metal salt of 1,1-diphosphonic acid and a melamine salt of 1-hydroxyethylidene-1,1-diphosphonic acid. Composition. |