| abstract |
Process for the production of a water-in-water polymer dispersion containing a polymer A and at least one polymeric dispersing agent B, according to which monomers that are dispersed in an aqueous phase containing the water-soluble dispersing agent B are subjected to a radical polymerization, if necessary with the addition of a water soluble salt, and, after polymerization, a water soluble acid is added to the water soluble polymer A and / or water swellable, characterized in that the acid is added in amounts of 0, 1-5% by weight and salt in amounts of at most 3.0% by weight, with respect to the total dispersion in each case, the total amount of salt and acid increasing to a maximum of 5% by weight with respect to the total dispersion. |