DISPERSING AGENT CONTAINING COPOLYMER MIXTURE

摘要

The invention relates to a polymer composition containing 5 to 95 percent by weight of a copolymer H and 2 to 60 percent by weight of a copolymer K. Copolymers H and K each include polyether macromonomer structural units and acid monomer structural units at a respective molar ratio ranging from 1:20 to 1:1 in copolymers H and K, and at least 20 mole percent of all structural units in copolymer H and at least 25 mole percent of all structural units in copolymer K are provided in the form of acid monomer structural units. Furthermore, the polyether macromonomer structural units in copolymer H have side chains, each of which contains at least 5 ether oxygen atoms. The number of ether oxygen atoms per side chain of the polyether macromonomer structural units in copolymer H varies such that the corresponding frequency distribution diagram, in which the number of ether oxygen atoms per side chain of a polyether macromonomer structural unit is represented on the abscissa and the associated frequency of copolymer H is represented on the ordinate, includes at least two peaks.