| abstract |
(57) [Summary] [Object] To provide a method for producing a polyurethane resin molded article, which contributes to improvement of productivity by reducing the operations in the molding step. [Structure] A reaction mixture comprising a polyisocyanate, a polyol, a cross-linking agent, a catalyst and an internal release agent, and if necessary, a foaming agent and an auxiliary agent is introduced into a molding die to which an external release agent has been applied in advance. An internal mold release agent used in a method for producing a polyurethane resin molded article, which comprises 0.5 to 5 parts by weight of zinc stearate and 1 to 10 parts by weight of stearin per 100 parts by weight of a polyol. A composition comprising zinc acid and an equimolar amount or more of polyoxypropylene polyamine, polyoxyethylene polyamine, isophorone diamine or 1,8-diamino-p-menthane. |