Method for manufacturing polyurethane curable composition, of polyurethane elastomer, waterproof construction method and spraying polyurethane waterproof material

摘要

PROBLEM TO BE SOLVED: To provide a polyurethane curable composition used for spray coating hardly influenced by water in a substrate, homogeneously curable and excellent in chemical resistance. SOLUTION: The polyurethane curable composition used for spray coating comprises at least two components: a main agent component containing an isocyanate group-containing compound and a curing agent component containing a castor oil-based polyol.