abstract |
The present invention provides a flame-retardant rigid polyurethane foam containing a polyol, an isocyanate foam-forming composition, and a dialkylphosphorus-containing compound. The dialkylphosphorus-containing compound is, specifically, a monohydroxyl functional dialkylphosphinate that functions as a flame retardant in a polyurethane foam as a highly efficient flame retardant. |