| abstract |
A polyol (PL) for polyurethane preparation is disclosed that includes the polyol (a) and the strength-enhancing agent (b), as follows. Polyol (a): a polyoxyalkylene polyol that is the alkylene oxide adduct of an active hydrogen-containing compound (H), in which at least 40% of a hydroxyl group positioned on the terminal is a primary hydroxyl group-containing group represented by general formula (I). In general formula (I), R 1 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, cycloalkyl group, or phenyl group. Strength-enhancing agent (b): a compound that is at least one compound selected from the group comprising an ester compound, a thioester compound, a phosphoric acid ester compound, and an amide compound, and that is derived from an aromatic polyvalent carboxylic acid with a valence of 2 or higher. |