abstract |
The present invention relates to ancomposition for rigid polyurethane foams withnlow thermal conductivity and permeabilitynreduced to water vapor and polyurethane foams,nflexible and semi - rigid, with high capacitynvibration damping, which contain, as filler,npre-expanded polystyrene beads, non-compliant, withndiameter less than 1 mm. |