| 摘要 |
Polymer powders redispersible in aqueous solution, their use in cosmetic, pharmaceutical or crop protection formulations and a process for preparing polymer powders redispersible in aqueous solution comprising copolymers carrying free acid or base groups and, if appropriate, auxiliaries, which comprises adjusting the pH of the dispersion prior to drying by the addition of at least one buffer system to a pH of from 2.0 to 6.5 in the case of copolymers carrying free acid groups or a pH of from pH 7.5 to 12 in the case of copolymers carrying free base groups. |
