abstract |
The present invention relates to polymerized, optionally substituted styrene and maleic acid in which at least one comb-copolymer (I) and carboxyl groups containing blocks of specific structural units are at least partially present as alkali metal, alkaline earth metal or ammonium salts. A polymer mixture consisting of at least one copolymer (II) comprising anhydride units. The present invention relates to the use of such polymer mixtures as wetting agents and dispersants. |