Polycondensation product containing phenolic copolymer and dispersant for hydraulic composition containing the same

A polycondensation product containing a copolymer obtained by polycondensation of a monomer mixture containing a compound A of the following Formula (A), a compound B of the following Formula (B), a compound C of the following Formula (C), and one or more aldehyde compounds D of the following Formula (D):

• (wherein A1O and A2O are each independently a C2-4 alkylene oxide group;
• m and n are an average number of moles of alkylene oxide added, and are each independently a number of 0 to 300, and m+n is 1 or more;
• A3O is a C2-4 alkylene oxide group;
• p is an average number of moles of alkylene oxide added, and is a number of 1 to 300;
• X is a hydrogen atom, a C1-10 alkyl group, or a C2-24 acyl group;
• A4O is a C2-4 alkylene oxide group;
• q is an average number of moles of alkylene oxide added, and is a number of 1 to 300;
• R0 is a hydrogen atom, a C1-24 alkyl group, or a C2-24 alkenyl group;
• R1 is a hydrogen atom, a C1-24 alkyl group, or a C2-24 alkenyl group;
• Y1 and Y2 are each independently a hydrogen atom, a phosphate group, or a sulfate group;
• Y3 is a phosphate group or a sulfate group;
• R2 is a hydrogen atom, a carboxyl group, a C1-10 alkyl group, a C2-10 alkenyl group, a phenyl group, a naphthyl group, or a heterocyclic group;
• and
• r is a number of 1 to 100.)