| abstract |
The present invention provides an antifoaming composition for a cement composition that can be used in a wide temperature range regardless of temperature. As a component (A), the following general formula (1) (Wherein R represents an aliphatic hydrocarbon group having 3 to 22 carbon atoms, m represents a number of 1 to 3, and n represents a number of 10 to 80), As the component (B), the following general formula (2) (Wherein p and p ′ each independently represent a number of 8 to 80, and q represents a number of 3 to 50) and a defoamer composition for a cement composition containing the surfactant object. [Selection figure] None |