| abstract |
Disclosed is a non-halogen flame retardant adhesive composition having excellent migration resistance not only in a single-layer plate structure but also in a copper-clad laminate having a high-density multilayer plate structure. (A) Non-halogen epoxy resin, (B) carboxyl group-containing acrylic resin and / or carboxyl group-containing acrylonitrile-butadiene rubber, (C) curing agent, (E) A flame retardant adhesive composition comprising a specific phosphinic acid compound and (F) an ion scavenger and / or a heavy metal deactivator. [Selection] Figure 1 |