| abstract |
The present invention relates to a dispersant composition for a hydraulic composition, comprising: (A) a polymer compound having a monomer unit including a naphthalene ring; A monomer unit of a group converted to a carboxylic acid group and a group converted to a phosphoric acid group by hydrolysis, and a polymer having a weight average molecular weight of 1,000 or more and 1,000,000 or less with a monomer unit having an alkyleneoxy group , and (C) specific compounds represented by general formulae (C1) to (C4). |