POLYMER DISPERSION Russian patent published in 2013 - IPC C08F2/20 C08F220/56 C02F1/56 D21H17/43 

FIELD: chemistry.

SUBSTANCE: invention relates to an aqueous polymer dispersion, a method for production thereof, use thereof and a method of making paper. The aqueous polymer dispersion for use as a flocculant when making paper or for water treatment contains an anionic water-soluble dispersion polymer which contains, in polymerised form, a monomer mixture containing (i) one or more anionic monomers, (ii) a first nonionic vinyl monomer which is an acrylamide, and (iii) at least a second nonionic vinyl monomer; a water-soluble salt and a stabiliser, where the water-soluble salt is present in an amount equal to at least 2.0 wt %, with respect to the total mass of the dispersion, and where the monomer mixture contains about 1 to about 40 mol % anionic monomer, about 20 to about 98 mol % acrylamide, and about 1 to about 40 mol % second nonionic vinyl monomer, wherein the sum of the percentage content equals 100, and the stabiliser is a polymer.

EFFECT: disclosed dispersion is characterised by better dehydration time.

23 cl, 2 tbl, 2 ex