FIELD: chemistry.
SUBSTANCE: described is a polyol composition containing polyol (a) and fine resin particles (b), dispersed in the polyol (a), where the fine resin particles (b) are polymer particles obtained by polymerising an ethylene unsaturated monomer (d) and content of particles with diametre of not less than 10 mcm in the fine polymer particles (b) is not greater than 2 vol %. The fine resin particles (b) are particles for which arithmetic standard deviation for particle size distribution per unit volume, obtained based on corresponding values in 85 intervals of the range from 0.020 to 2000 mcm, determined using a particle size distribution analyser through a laser radiation diffraction/scattering method, is not greater than 0.6. The resin has ultimate tensile strength of 1.54-1.65 kgf/cm2 and breaking elongation of 116-123%.
EFFECT: improved mechanical strength parametres.
17 cl, 6 tbl, 24 ex
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