DISPERSANT COMPOSITION FOR SUSPENSIONS OF INORGANIC SOLID SUBSTANCES Russian patent published in 2021 - IPC C04B24/26 C04B28/02 C04B40/00 C04B103/12 C04B103/14 

FIELD: chemistry.

SUBSTANCE: invention relates to solid compositions for use as a dispersant for suspensions of solid substances used in compositions of inorganic binding substances. Composition in form of a solid substance suitable for use as a dispersant for suspensions of inorganic solid substances and containing A) at least one water-soluble polymer, containing polyether groups, and B) at least one acid group and/or their salts containing a water-soluble condensation product based on monomers. Monomers are at least α) a monomer with a ketone residue and β) formaldehyde. Method of preparing said composition comprises following steps: a) preparing water-soluble polymer A), b) preparing a water-soluble condensation product B), c) preparing an aqueous mixture, containing at least one water-soluble polymer A) and a water-soluble condensation product B) and d) the aqueous mixture is subjected to spray drying to obtain a solid substance. Use of said composition in composition of inorganic binder.

EFFECT: technical result is improvement of dispersant powder properties with their preservation under thermal and mechanical load, improved dosing efficiency, elimination of slowing-down of inorganic binding.

15 cl, 4 tbl