PHOTOCURABLE PUTTY FOR REPAIRING SHEET METAL

摘要

To provide a photocurable one-pack type putty for repairing sheet metal, which cures rapidly by harmless visible light. A photocurable putty for repairing sheet metal comprising: (a) 100 parts by weight (33.3 % to 73.5 % by weight based on the total amount of the components (a) to (c)) of a bisphenol A type epoxy di(meth)acrylate; (b) 1 to 100 parts by weight (0.7 % to 33.3 % by weight based on the total amount of the components (a) to (c)) of a photopolymerizable (meth)acrylate; (c) 35 to 100 parts (25.7 % to 33.3 % by weight based on the total amount of the components (a) to (c)) by weight of a photopolymerizable urethane oligomer having two or more (meth)acryloyloxy groups per molecule; and (d) 0.01 to 10 parts by weight of .alpha.-diketone as a photoinitiator, 0.01 to 10 parts by weight of tertiary amine as a photosensitizer and 0.01 to 5 parts by weight of an onium salt as a photoreaction accelerator, each amount being based on 100 parts by weight of the total amount of the components (a) to (c).