ULTRAVIOLET CURABLE ADHESIVE COMPOSITION AND ADHESIVE FILM

摘要

The present invention addresses the problem of providing an ultraviolet curable adhesive composition which is capable of providing an adhesive film that has excellent followability to a difference in level and is free from entrainment of air bubbles and the like. The present invention provides an ultraviolet curable adhesive composition which contains an organic solvent (C), and which is characterized in that an ultraviolet curable adhesive film before ultraviolet irradiation obtained by applying the ultraviolet curable adhesive composition to a base and then drying the organic solvent (C) has a storage elastic modulus (G') of less than 1.5 × 105 Pa and a loss tangent (tanδ) of 1 or less at 60-80°C. The present invention also provides an adhesive film which is characterized by being obtained by: forming an ultraviolet curable adhesive film by applying the ultraviolet curable adhesive composition to a base and then drying the organic solvent (C); and subsequently bonding an adhesive layer of the ultraviolet curable adhesive film to a base and then irradiating the ultraviolet curable adhesive film with ultraviolet light.