FIELD: technological processes.
SUBSTANCE: invention describes a method for producing acylated vinylamine-containing polymer comprising steps of: a) conducting free radical polymerisation of N-vinylformamide in an aqueous solution; b) conducting alkaline hydrolysis to form vinylamine-containing polymer and c) reacting vinylamine-containing polymer with at least one acylating agent, wherein acylating agent is selected from a group consisting of carboxylic acid anhydride, acyl halide and mixtures thereof, and wherein acylation temperature ranges from about 20 to about 50 °C and wherein carboxylic acid anhydride is not a cyclic anhydride.
EFFECT: technical result consists in application of acylated polymer in making paper as additives for increasing strength in dry state, retention and dehydrating agents, as well as agents for inhibiting formation of deposits of resin and adhesive materials.
13 cl, 32 ex, 3 tbl
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