| abstract |
An object of the present invention is to easily obtain a styrenic resin extruded foam having an excellent heat insulating property and a sufficient thickness suitable for use. The polybutadiene resin composition according to any one of claims 1 to 3, which contains hydrofluoroolefin and contains polyvalent alcohol fatty acid ester in an amount of not less than 0.05 part by weight and not more than 5.0 parts by weight based on 100 parts by weight of the styrene resin, have. The amount of the hydrofluoroolefin added is preferably 3.0 parts by weight or more and 14.0 parts by weight or less based on 100 parts by weight of the styrene resin. |