| abstract |
(57) Abstract: A rigid polyurethane foam having high heat insulation and sound insulation is obtained. SOLUTION: In a rigid polyurethane foam obtained by reacting and curing an active hydrogen compound and an organic polyisocyanate in the presence of a catalyst, a foam stabilizer, a foaming agent, etc., at least a part of the active hydrogen compound is sulfamic acid (salt). A rigid polyurethane foam composed of a group-containing polyol, in which a transition metal or a chalcogen compound or halogen compound or hydroxide thereof is dispersed in the foam. |