FIELD: chemistry.
SUBSTANCE: described is a method of producing polyguanidines by polycondensation of a guanidine salt with a diamine while heating, characterised by that polycondensation is carried out in the presence of an organic acid or a mixture of organic acids and heating is carried out in steps as follows: at the first step at 120-130°C for 0.5-1 hour; at the second step at 150-160°C for 3.5-4 hours; at the third step at 170-180°C for 0.5-1.5 hours.
EFFECT: improved method.
11 cl, 2 tbl, 4 ex
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