FIELD: manufacturing technology.
SUBSTANCE: invention relates to the manufacture of paper, namely the composition, which is used as an additive in papermaking technologies. Composition of a graft copolymer of vinyl monomer on a functionalized vinylamine-containing polymer is described. In the grafted polymer, the ratio of the number of moles of the functionalized polymer containing vinylamine to the number of moles of the vinyl monomer is in the range from 40:60 to 80:20.
EFFECT: improved dry strength, wet strength, paper retention and dewatering.
21 cl, 9 ex, 9 tbl
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