To provide a urethane coated film waterproofing material composition in which accumulation of air scarcely occurs in an interlayer when recoating is carried out and method for applying the urethane coated film waterproofing material.
The urethane coated film waterproofing material composition is obtained by mixing an isocyanate component with a curing component when used and the composition is applied. The isocyanate component comprises a prepolymer having NCO group terminals, obtained by a polypropylene polyol with a diisocyanate, as a main component. The curing component comprises an aromatic diamine and the polypropylene polyol. The aromatic diamine is a modified aromatic diamine obtained by condensing the aromatic diamine and o-chloroaniline and aniline with formaldehyde. At least one kind of the polypropylene polyol constituting the curing component has 2-3 average functional groups and 1,000-8,000 average molecular weight. Ninety percent or more of the terminals is a primary hydroxy group obtained by ring-opening addition of ethylene oxide.
Koichi Kajisaki
Yuzo Ozaki
Toshihiko Taniguchi
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