| abstract |
(57) [Summary] [Problem] It has extremely low viscosity without using a solvent, Provided is a polyurethane-based coating film waterproofing material composition having good workability, sufficient curability, appearance of a cured coating film, and mechanical strength. SOLUTION: In a polyurethane-based coating film waterproofing material composition comprising at least a main agent and a curing agent, a main agent containing an isocyanate group-containing compound having an NCO group content of 12 to 28% by mass and a curing agent containing polyoxytetramethylene glycol Is used. Preferably, a filler is used as the third component. |