| 摘要 |
PURPOSE:To make it possible to obtain a foam having good flame retardancy characteristics, a high strength and a low water absorptivity, by mixing an aqueous carbohydrate solution with a polyether polyol obtained by reacting a phenolic resin with an alkylene oxide, a reaction catalyst and an isocyanate compound. CONSTITUTION:This foamable resin composition contains an aqueous carbohydrate solution and/or its slurry (a), a polyether polyol (b) obtained by reacting a phenolic resin with an alkylene oxide, a reaction catalyst (c), an isocyanate compound (d) and, optionally, a foam stabilizer (e) and/or a flame retardant (f). The mixing ratio of said composition is preferably (a): 50-200pts.wt., (b): 5-200pts.wt., (c): 0.1-5pts.wts., (d): 50-200pts.wt., (e): 0.1-5pts.wt. and (f): 0.1-100pts.wt. The water content of the aqueous carbohydrate solution and/or its slurry (a) is preferably 5-20wt%. |
