| 摘要 |
PROBLEM TO BE SOLVED: To provide an adhesive composition excellent in flame retardancy, migration resistance, adhesion, heat resistance and solvent resistance while being halogen-free, and a print board material using the composition such as an adhesive sheet, a coverlay film, a copper clad laminate. SOLUTION: The flame retardant adhesive composition includes a halogen-free epoxy resin (A), a synthetic rubber (B), a hardener (C), and a phosphoric acid ester compound (D) having a specific reactive group. The adhesive sheet has a release substrate, and a layer composed of the composition provided on at least one side of the substrate. The coverlay film has an electric insulation film, and a layer composed of the composition provided on at least one side of the electric insulation film. The flexible copper clad laminate has an electric insulation film, a layer or layers composed of the composition provided on one side or both sides of the electric insulation film, and one layer or two layers of copper foil on the one layer or tow layers of the composition thus provided. COPYRIGHT: (C)2009,JPO&INPIT |
