abstract |
1,1,1,3,3-pentafluoropropane 51 to 90 as a blowing agent in the method for producing a foam of polyurethane or polyisocyanurate by reacting a polyol and a polyisocyanate compound in the presence of a blowing agent. A method for producing a synthetic resin foam, characterized by using a mixture consisting of 49% by weight and 1-10% by weight of 1,1,1,3,3-pentafluorobutane. |