| abstract |
(57) [Problem] To provide a styrene-based resin foam which is both easy to produce and has both heat insulation and flame retardancy, while using a foaming agent having a low environmental problem. SOLUTION: A styrene-based resin foam obtained by heating and melting a styrene-based resin, adding a foaming agent, and extruding and foaming the same, wherein the foaming agent has at least 3 to 3 carbon atoms. 5. A styrenic resin foam containing at least one saturated hydrocarbon of No. 5, and containing a halogen-based flame retardant and a specific nitrogen-containing compound, and a method for producing the same. |