NOVELTY - An ultraviolet curable adhesive composition contains chlorinated polyolefin (A), radically polymerizable diluent (B), acrylic polymer (C) and photoinitiator (D). The component (B) contains polyfunctional acrylic monomer (b-1) containing isocyanuric acid ethylene oxide modified diacrylate and acrylic monomer (b-2) having 1 acryloyl group in a molecule. The component (C) contains polyfunctional acrylic monomer (c-1) containing 2 or more acryloyl groups in a molecule, radically polymerizable unsaturated monomer (c-2) and acrylic monomer (c-3).    USE - Ultraviolet curable adhesive composition used for sealing in photovoltaic cell, dye-sensitive photovoltaic cell, adhesive of laminated layer for lithium ion secondary battery, adhesive agent, high functional filter, plasma display panel television and liquid crystal display television.    ADVANTAGE - The adhesive composition has excellent weather resistance, high transparency, favorable coloring property and firm adhesion property. The adhered material has excellent rework property and chemical resistance.    DETAILED DESCRIPTION - An ultraviolet curable adhesive composition contains 1-25 wt.% of chlorinated polyolefin (A), 15-59 wt.% of radically polymerizable diluent (B), 40-60 wt.% of acrylic polymer (C) and 1-5 wt.% of photoinitiator. The total amount of the components (A-C) is 100 wt.%. The component (B) contains 1-16 wt.% of polyfunctional acrylic monomer (b-1) containing isocyanuric acid ethylene oxide modified diacrylate having 2 or more acryloyl groups in a molecule and 74-99 wt.% of acrylic monomer (b-2) having 1 acryloyl group in a molecule. The component (C) contains 0.05-1.5 wt.% of polyfunctional acrylic monomer (c-1) containing 2 or more acryloyl groups in a molecule, 0.2-16 wt.% of radically polymerizable unsaturated monomer (c-2) and 82.5-99.75 wt.% of acrylic monomer (c-3). The sum total amount of the components (b-1,b-2) is 100 wt.% and sum total amount of the components (c-1,c-2,c-3) is 100 wt.%.