FOAMING AGENT FOR PRODUCTION OF FOAM CONCRETE Russian patent published in 2007 - IPC C04B24/02 C04B38/10 

FIELD: manufacture of building materials and foaming agents containing surfactants for production of foam concrete.

SUBSTANCE: proposed foaming agent contains the following components, mass-%: triethanol amine and/or sodium salts of alkyl sulfates of primary higher fatty alcohols of C₈-C₁₀ fraction at any ratio of C₈ and C₁₀ fractions, 13.0-30.0; olefin sulfonates or alkane sulfonates of sodium of C₁₄-C₁₆ fraction and/or triethanol amine and/or sodium salts of alkyl sulfates of primary higher fatty alcohols of C₁₂-C₁₅ fraction at hydroxyethylation degree of 23, 2.0-5.0; primary higher fatty alcohols of C₁₂-C₁₄ fraction at content of C₁₄ not exceeding 50 mass-%, 1.0-3.0; carbamide, 2.0-7.0; n-butanol, 2.0-7.0; formaldehyde and ethanol amine trimer, 0.2-1.0; soda ash, 0.15-1.0; the remainder being water.

EFFECT: improved foam-making properties for production of foam of low and average expansion ratio; enhanced stability of foam in cement slurry.

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