THICKENER CONCENTRATE

摘要

The invention relates to thickener concentrates which are free of solvents and surfactants and can be dispersed in water, said thickener concentrates consisting of (a) between 1 and 98 wt. % of a HEUR type polyurethane associative thickener, (b) between 1 and 98 wt. % of an associative thickener of a polyether type, and (c) between 1 and 98 wt. % of water, the weight percentages of the individual constituents relating to the composition of the entire concentrate and the sum of the constituents (a), (b) and (c) amounting to 100 %, with the proviso that the constituent (b) is selected from the compounds of formula (I), R¹-ABCD (I), wherein R¹ is selected from trivalent or quadrivalent radicals of the group of linear or branched aliphatic groups comprising between 3 and 50 C atoms, cycloalkyl groups comprising between 4 and 20 C atoms, olefinically unsaturated linear or branched aliphatic groups comprising between 3 and 40 C atoms, cycloalkenyl groups comprising between 5 and 20 C atoms and aromatic groups, said aromatic groups being optionally substitutable by between 1 and 4 linear and/or branched aliphatic groups, and the entire number of C atoms of the optionally substituted aromatic groups amounting to between 6 and 21, with the proviso that, within the radical R¹, up to four methylene groups (-CH₂-), that cannot however be directly adjacent, can be respectively replaced by an oxygen atom (-O-); A represents a group -(O-X_i-R²)_n; B represents a group -(O-x_j-R³)_m; C represents a group -(O-X_k-R⁴)₀; and D represents a group -(O-X₁-R⁵ )_p, X representing an ethyleneoxy group, a 1,2 propyleneoxy group or a 1,2 butyleneoxy group, the indices i, j, k and 1 independently representing 0 or a number between 50 and 200, with the proviso that at least two of the indices i, j, k and l are different from 0, the indices n, m, o and p independently representing respectively 0 or 1, with the proviso that at least three of the indices n, m, o and p have the value 1, and also that, if n, m, o or p have the value 0, the corresponding valency of the radical R¹ is saturated with hydrogen, and the radicals R² to R⁵ independently represent alkyl, aryl or alkaryl groups comprising respectively between 1 and 50 C atoms.