| abstract |
(57) [Problem] To provide a spray seal method that can easily and quickly repair gas leaks from pipe joints, particularly in domestic pipes, when screw leakage occurs, Moreover, a sealant having earthquake resistance is provided. SOLUTION: Urethane resin prepolymer (for example, tolylene diisocyanate, diphenylmethane-4, 4′-diisocyanate), usually a solvent (for example, Spray sealant composition containing a pipe sealant composition containing a plasticizer (eg, dioctyl phthalate) and, if necessary, a propellant (eg, liquefied dimethyl ether, liquefied petroleum gas). Use things. |