METHOD OF PRODUCING PARTICLES OF FLOCCULATED FILLER Russian patent published in 2019 - IPC C09C1/40 C01F11/18 C09C1/00 C09C1/02 D21H19/38 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing particles of a flocculated filler, where at least two aqueous suspensions of at least one filler material and at least one flocculating additive are combined. Described is a method of producing particles of a flocculated filler, comprising steps a) obtaining at least two aqueous suspensions, each of which contains at least one filler material, where i) first aqueous suspension S1 contains at least one flocculating additive A, which is a cationic polymer, and ii) second aqueous suspension S2 contains at least one flocculating additive B, which is an anionic polymer and which differs from flocculation additive A, and iii) at least one filler material in first aqueous suspension S1 and second aqueous suspension S2 is substantially identical, which means that same are more than 99 wt. % of at least one filler material in first and second suspensions, and b) combining at least two aqueous suspensions obtained at step a), as a result of simultaneous reduction thereof to obtain an aqueous suspension of SM particles of the flocculated filler, where the weight ratio for at least one filler material in the first aqueous suspension and the second aqueous suspension S1:S2 is in range of 1:100 to 100:1. Also, suspension of particles of flocculated filler, fleece and application of particles suspension are described.

EFFECT: technical result is improvement of binding properties of filler.

15 cl, 6 dwg, 3 tbl