| PATENT CLAIMS |
(a) Applying to water-resistant substrate an aq. coating compn contg. water & only one binder which consists of a hydrophilically-modified polyisocyanate comp. contg. one or more hydrophillically modified polyisocyanates which are dispersible in water, said comp. having a visc. at 23C of 100-5000 mPa.s, an av. NCO functio
nality of 2-4, a content of (cyclo)aliphatically bound NCO groups of 12-21.5% ny wt., based on wt. of said comp., & content of ethylene oxide (EO) units (calculated as C2H4O, MW = 44) present within polyether chains of 2-20%
(b) Curing compn in presence of moisture to form polyurea coating
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