FIELD: chemistry.
SUBSTANCE: invention relates to polymer compositions for producing polyphenol-based foamed material containing isocyanate, an acid catalyst and tannins. Composition has a mixed tannin-furane-isocyanate structure in which tannins are part of a resin which performs a function of the reagent for the composition, wherein said resin is a tannin-based polyphenol resin, including at least a substance reacting with tannins in the presence of an acid catalyst, and at least a substance reactive with isocyanate in the presence of an acid catalyst, and does not contain low-boiling solvents. Amount of isocyanate is not less than 10 % of the weight of the composition. Composition is intended for production of foamed materials using apparatus used to produce polyurethane foamed materials.
EFFECT: invention improves mechanical strength and fire-resistance of the foamed material.
15 cl, 7 ex, 2 tbl
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