| abstract |
PROBLEM TO BE SOLVED: To provide a dispersant capable of easily dispersing a substance insoluble in a liquid substance in a liquid medium, and to improve the dispersibility of an inorganic substance in an aqueous medium. It is useful as a cement dispersant, and in particular, to provide a cement admixture that contributes to water reduction and high fluidization of a cement composition. A polymer (A) having a structural group (a) derived from vinyl ether, a carboxy structural group (b), and a nitrogen-containing structural group (c) as essential components, and having these structural groups in a specific ratio, It improves the dispersibility of an inorganic substance in an aqueous medium, and particularly when applied to a cement composition, it can reduce water and is excellent in the effect of improving fluidity. [Selection figure] None |