Use of polycarboxylate ethers with branched side chains as dispersants for inorganic binders

摘要

Use of a copolymer for the dispersion of inorganic binders, the copolymer comprising as comonomers in copolymerized form: (A) at least one ethylenically unsaturated acid monomer, (B) at least one ethylenically unsaturated branched polyether macromonomer of the general formula EVkLk - 1, in which E is an ethylenically unsaturated structural unit which comprises at least one ether, carboxylic ester or carboxamide structural unit V is a branched structural unit of the formula -CH (CH2O-) 2, and L is a structural unit linear formula [A1O] 1-A2, in which A1 in each case is independently selected from C2-C10 alkylene, C6-C10 arylene and / or C7-C10 aralkylene, preferably -C2H4-, A2 in each If independently selected from C1-30 alkyl, C3-C10 cycloalkyl, C6-30 aryl and / or C7-C30 aralkyl, preferably C1-C4 alkyl, k is an integer from 1 to 7, preferably from 1 to 3, and in each case independently it is an integer from 1 to 350, preferably from 2 to 100, more particularly from 5 to 70 and most preferably from 7 to 17.