ADDITIVE FOR LIME, CEMENT FINISHING COMPOUNDS Russian patent published in 2023 - IPC C04B28/22 C04B22/00 C04B14/04 

FIELD: construction materials.

SUBSTANCE: method for producing modifying additives for lime, cement finishing compounds used for finishing concrete and plaster surfaces and is aimed at increasing the activity of the additive. The additive is obtained by precipitation from liquid sodium glass with a density of 1335-1663 kg/m³ and the module M=1.53-2.9 during sequential administration of the plasticizer C-3 and additives-precipitators CaCl₂ in the amount of 31.9-39% by weight of water glass in the form of a 7.5-15% solution and Al₂(SO₄)₃ in the amount of 8.45-13.24% by weight of liquid glass in the form of 15% solution, and drying at a temperature of 105°C with subsequent grinding of the dried precipitate at the following ratio of components during synthesis, in % by weight: liquid glass - 66-71, calcium chloride - 21.2-25.8, C-3 - 0.66-0.7, aluminum sulfate - 6.0-8.74.

EFFECT: enhancement of the additive activity.

1 cl, 2 tbl