| abstract |
Aqueous dispersions of fillers and / or pigments contain a combination of dispersants with the following composition: A) 40 to 95% by weight of a water-soluble polymer, B) 0 to 60% by weight of a nonionic alkylene oxide adduct with an average molecular weight of 200 to 100,000, C) 0 to 60% by weight of compounds of the formulas (I), (II) and / or (III) R₁ - (- SO₃X) z R₁ - (- O-SO₃X) z R₁ - (- O-PO₃X₂) z , (I) (II) (III) in which R₁ represents an optionally substituted aliphatic, aromatic or araliphatic radical with 1 to 50 C atoms, z each independently for an integer from 1 to 10 and X represents hydrogen, a monovalent metal ion or an optionally substituted ammonium ion and D) 0 to 60% by weight of a compound of the formula (IV) in the Q for hydrogen, in the Y in each case independently of one another for hydrogen, a monovalent metal ion or an optionally substituted ammonium ion, R₂ each independently of one another for hydrogen, an optionally substituted alkyl radical having 1 to 12 carbon atoms or for a radical of the type -CH₂-COOR₃ or -CH₂-CH₂-COOR₃ and R₃ each independently represent hydrogen, Y or an optionally substituted alkyl radical having 1 to 25 carbon atoms, the sum of A) + B) + C) + D) being 100% by weight and at least one of components B), C) and D) being different from zero. |