| 摘要 |
PROBLEM TO BE SOLVED: To provide a one-liquid type adhesive composition for crack repair which is used for sealing and adhesion in crack repairing with excellent detachability, curability, and adhesive properties; and a crack repair method with excellent workability using the adhesive composition.SOLUTION: A crack repair method includes the steps of: sealing the surface of a crack with an adhesive and fixing a repair agent injection tool with the adhesive; injecting a repair agent in the crack; and peeling off the adhesive for removal after curing of the repair agent. A one-liquid type adhesive composition, which contains (A) urethane prepolymer produced by a reaction of propoxy polyether polyol having an ethylene oxide cap and a polyisocyanate compound and (B) fatty acid ester, is used as the adhesive in the method. |
