| abstract |
(57) [Summary] [Objective] A polyurethane elastomer obtained by reacting an isocyanate group-terminated prepolymer with a curing agent, and a binding agent and a sealing material using the elastomer. [Structure] An isocyanate group-terminated prepolymer obtained by reacting diphenylmendiisocyanate with a specific composition and a polyol, and a curing agent, which is liquid at room temperature and has a workable viscosity. It has elasticity and high physical properties. |