PURPOSE: A composition which cures rapidly upon irradiation and shows excellent adhesion to metals, comprising a halogenated polyolefin or a halogenated diene polymer and a monomer having a radiation-polymerizable unsaturated double bond.

CONSTITUTION: A resin composition containing 1W40wt% halogenated polyolefin and/or halogenated diene polymer and 60W99wt% radiation-polymerizable double bond-containing monomer and/or its propolymer as essential components and a photopolymerization initiator as an optional component. The halogenated resins used are a halogenated polyolefin and/or a halogenated diene polymer, and are selected from halogenated resins soluble in the radiation-polymerizable unsaturated double bond-containing monomer and/or its polymer each of which plays a roll of both a crosslinking component and a solvent.