FIELD: chemistry.
SUBSTANCE: aqueous dispersion contains: a) from 51 to 90 wt % polymer particles of basic latex and b) from 10 to 49 wt % polymer particles of reinforcing latex, containing structural links of aromatic vinyl monomers and conjugated diene monomers. Amount of latex is given in terms of total mass of polymer particles in the rubber dispersion. Polymer particles of the reinforcing latex have a single glass transition temperature (Tg) from -25°C to 28°C, measured through differential scanning calorimetry (DSC). The polymer particles of the basic latex have Tg, measured through differential scanning calorimetry, lower than Tg of particles of the reinforcing latex.
EFFECT: obtaining required hardness of the obtained foamed latex with relatively high hysteresis, which can be easily regulated, while retaining constant hardness.
19 cl, 1 tbl, 18 ex
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