POLYMERIC COMPOSITION FOR MANUFACTURING A POLYPHENOL BASED FOAM MATERIAL, AND PROCESS THEREOF

摘要

A polymeric composition for manufacturing a polyphenolic based foam material includes isocyanate, an acid catalyst and tannins. The composition has a mixed tannin-furan-isocyanate structure in which the tannins are part of a resin having the function of reactant for the composition, and it is completely free of low-boiling solvents. The amount of isocyanate is substantially greater than 1% by weight of the composition, preferably not less than 10% by weight with respect to the composition. The composition is adapted to obtain foam materials by means of the plants used for manufacturing polyurethane foam materials.