stable aqueous suspensions of vanduoploeselige, for binding of calcium ions suitable silicates, their use in the manufacture of phosphaterstatninger for detergentsand phosphaterstatninger

摘要

1. Pumpable stable aqueous suspensions of a water-insoluable silicate capable of binding calcium ions in the form of a finely divided bound water-containing synthetically produced water-insoluble compound corresponding to the general formula (Cat2/n O)x . Me2 O3 . (SiO2 )y (I), in which Cat represents a cation which is exchangeable with calcium of valency n x represents a number from 0.7 to 1.5, Me represents boron or aluminium, and y represents a number from 0.8 to 6, characterised in that contains the water-insoluble silicate capable of binding calcium ions in quantities of at least 0.5% by weight and as constituent having a dispersing effect, from 0.5 to 6% by weight of a mixture of at least two different alkylphenol ethoxylates corresponding to the formula see diagramm : EP0144492,P9,F2 wherein in Formula II R=an aliphatic radical containing from 1 to 15 carbon atoms and n represents from 2 to 7 preferably from 4 to 6, in particular 5 in one alkylphenol ethoxylate used in the mixture and from 8 to 15, preferably from 8 to 12, in particular 9 or 10 in the other alkylphenol ethoxylate and a content which is dissolved in the aqueous phase of from 4 to 25% by weight of the trisodium salt of nitrilotriacetic acid, with respect to the suspension, on the condition that the suspension contains at least 20% by weight of water.