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AssigneeHenkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
InventorsDieter Kuhling, Josef Huppertz, Peter Krings, Herbert Reuter
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Aqueous suspensions of water-insoluble, calcium-binding aluminosilicates with an improved stability against settling comprising at least 20% by weight of at least one finely-divided, water-insoluble silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and having the formula, combined water not shown (M.sub.2/n O).sub.x . Me.sub.2 O.sub.3 . (SiO.sub.2).sub.y where M is a cation of the valence n, exchangeable with calcium, x is a number of from 0.7 to 1.5, Me is aluminum or boron, and y is a number from 0.8 to 6, and at least 0.5% by weight of at least one organic dispersing agent as follows: (1) an organic, macromolecular polymer with carboxyl and/or hydroxyl groups, (2) an organic phosphonic acid with at least one additional phosphonic or carboxylic acid group, (3) an alkyl acid phosphate having 3 to 20 carbon atoms in the alkyl (4) a nonionic surface-active compound with a turbidity point in aqueous butoxyethoxyethanol according to DIN 53917 of below 90.degree. C. (5) a surface-active sulfonate, and the remainder an aqueous liquor. The said suspensions are pumpable and suitable as stock solution in the preparation of washing agent compositions.
An aqueous suspension having a pH of between 7 and 12 of water-insoluble, calcium-binding aluminosilicates with an improved stability against settling consisting essentially of (A) from 20% to 50% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and a primary particle size of from 0.1.mu. to 100.mu. and having the formula, combined water not shown
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