| 摘要 |
PURPOSE:To obtain the titled light-weight foam having sound-absorbing property as well as vibration-damping property and having excellent heat-resistance, by using a specific polyether polyol as a polyol component and using specific amounts of a plasticizer and a tackifier soluble in the polyol component. CONSTITUTION:The objective foam can be produced by compounding (A) a mixed polyol composed of (i) >=10wt% poly(oxyalkylene)diol having an average molecular weight of 1,000-3,000 and (ii) a poly(oxyalkylene)triol having an average molecular weight of 2,000-6,000 with (B) 25-200pts.(wt.) (based on 100pts. of the component A) of a tackifier soluble in the component A, (C) 0.25-2pts. (based on 1pt. of the component B) of a plasticizer (e.g. phthalic acid ester), (D) an organic isocyanate, (E) a foaming agent, (F) a catalyst and (G) a foam stabilizer and reacting and foaming the mixture e.g. by one-shot process. |
