FIELD: chemistry.
SUBSTANCE: invention relates to a defoaming agent for a hydraulic composition and to the hydraulic composition containing the defoaming agent. Defoaming agent for a hydraulic composition contains a specific nitrogen-containing polyoxyalkylene compound.
EFFECT: production of a defoaming agent demonstrating high compatibility with the additive and having excellent defoaming properties and bubble stability.
10 cl, 5 tbl
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