RHEOLOGY REGULATOR FOR INORGANIC BINDER-BASED DISPERSION SYSTEMS Russian patent published in 2018 - IPC C04B24/24 C04B28/02 C04B28/14 C04B28/10 C04B103/30 C04B111/20 C04B103/46 

FIELD: chemistry.

SUBSTANCE: invention relates to a composition of a rheology regulator, to the use thereof and to the composition of a dry construction mixture containing a regulator, and be used in inorganic binder-based compositions. Rheology regulator for use in inorganic binder-based compositions contains at least one component which is a copolymer of 2-propenamide and ethenecarboxylic acid, wherein the mole fraction of the carboxyl groups in the copolymer of 2-propenamide and ethenecarboxylic acid is about 0.05 to 0.30, and the product of copolymerisation constants r₁⋅r₂ is less than 1, where r₁ is the copolymerisation constant of 2-propenamide, r₂ is the copolymerisation constant of ethenecarboxylic acid. Use of the rheology regulator in inorganic binder-based compositions, where said composition is selected from dry plaster, putty, adhesive, cement-based floor and assembly mixture, gypsum, limestone, cement-limestone, gypsum cement and gypsum-limestone binder. Dry construction mixture includes binder – gypsum plaster, alkalinity regulator – slaked lime, filler – limestone flour, aggregate – quartz sand, water-retaining additive – 2-hydroxyethyl methylcellulose, pore-forming agent – sodium dodecyl sulphate, setting retarder – L-(+)-2,3-dihydroxybutanedioic acid, and also contains a rheology regulator at a given ratio of components.

EFFECT: wider range of permissible water-solids ratio, lower density and higher water-retaining capacity of the dispersion system, reduced consumption of the construction composition on forming a unit surface area for a given layer thickness, reduced defects and graininess of the surface due to the introduction of a rheology regulator in the construction composition.

8 cl, 3 tbl