| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous floor-coating excellent in attaching property with old coated film, also excellent in the initial hardness of the coated film and waterproof property, and a method for coating the floor by using the same coating. SOLUTION: This aqueous floor-coating is obtained by dispersing (A) a polyisocyanate, (B) an acrylic resin having 40 to 150 mgKOH/g hydroxy group value, preferably 50 to 120 mgKOH/g hydroxy group value and 25 to 60°C glass transition temperature (Tg) and (C) an acrylic resin having≥350,000 weight-average molecular weight, 0 to 15 mgKOH/g hydroxy group value, preferably 0 to 12 mgKOH/g hydroxy group value and 40 to 65°C glass transition temperature (Tg) preferably by a weight ratio [(B)/(C)] becoming 0.4 to 2.2. Also, the method for coating the floor is provided by applying the aqueous floor-coating on the floor material on which the old coated membrane presents, and drying. COPYRIGHT: (C)2007,JPO&INPIT
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