MIXED ORGANIC ADDITIVE ACTIVATING AND HYDROPHILIZING ALUMINUM POWDERS Russian patent published in 2023 - IPC C04B24/00 C04B22/04 C04B38/02 

FIELD: building materials.

SUBSTANCE: invention concerns compositions of organic additives that activate and hydrophilize aluminium powders intended for the manufacture of non-dusting, explosion-proof blowing agents for porous concrete mixtures. Mixed organic additive, activating and hydrophilizing aluminium powders, comprises components in the following ratio, wt.%: isopropyl alcohol С₃Н₇ОН or isobutyl alcohol С₄Н₉ОН or their mixture at a ratio of (0-1): (1-0) 10-20; petroleum solvent 10-20; a mixture of primary ethoxylated higher alcohols RO(C₂H₄O)₁₀H, R=C₁₀-C₁₈ Sintanol DS-10 and/or the product of processing a mixture of mono- and dialkylphenols with ethylene oxide RʼRʼʼ(C₆H₄)O(C₂H₄O)_nH, Rʼ, Rʼʼ=C₈-C₁₂, n=10-12 wetting agent OP-10, and/or a mixture of primary ethoxylated synthetic higher alcohols of fractions C₁₆-C₁₈ Agent OS-25 and/or ethoxylated ester of stearic acid with the addition of 5-10% preparation OS-20 or 5-7% neonol AF9/10 or 5-7% sintanol DS-20 Stearox-6 30-40; salts of lignosulphonic acids, a product of processing of vegetable wood raw materials at the pulp and paper mill, lignosulfonate powder 30-40.

EFFECT: reducing the chemical activity of non-dusting, explosion-proof blowing agents based on aluminium powders at the initial stage of their reaction with Ca(OH)₂ hydrosuspension in water and a sharp increase in chemical activity at the finishing stage, as well as a more complete use of aluminium powder for hydrogen generation

1 cl, 13 tbl