| abstract |
In a polycarboxylic acid cement dispersant, a means capable of facilitating pulverization while exhibiting excellent dispersion performance is provided. Repeating unit derived from unsaturated polyalkylene glycol monomer ( I), a repeating unit (II) derived from an unsaturated carboxylic acid monomer, a repeating unit (III) derived from a branched compound monomer having a branched structure containing three or more polyoxyalkylene chains in the molecule, Derived from a powdered cement dispersant, or a repeating unit (IV) derived from an unsaturated polyalkylene glycol monomer and an unsaturated carboxylic acid monomer A polycarboxylic acid copolymer (A) having a repeating unit (V) and a branched compound having a branched structure containing three or more polyoxyalkylene chains in the molecule (B When, including, by powdery cement dispersant, the problem is solved. [Selection figure] None |