FIELD: chemistry.
SUBSTANCE: binder for making paper and cardboard contains carbamide, formaldehyde, melamine, cationic starch, glycerine, sodium silicate and a surfactant which contains fatty alkylamidopropylbetaine, with the following ratio of components, wt %: carbamide 29-36; formaldehyde 35-42; melamine 11-12; cationic starch 3-5; glycerine 2-4; sodium silicate 1-12; surfactant 3-6.
EFFECT: invention enables to obtain binder for making paper and cardboard, which meets requirements for mechanical strength, water-resistance and toxicity, with high stability of aqueous dispersions.
2 cl, 2 tbl
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