A liquid composition which on exposure to actinic radiation polymerises to form a heat-curable solid film adhesive, said composition comprising (A) a heat-curable phenol-aldehyde resol resin, (B) a photopolymerisable resin having, on average, more than one polymerisable acrylic group per molecule, (C) a photopolymerisation initiator for (B) and (D) an aminotriazine-formaldehyde resin.
展开▼