| abstract |
The invention relates to processes for the preparation of a water-in-water polymer dispersion containing polymer A and at least one polymeric dispersant B, according to which monomers are distributed in an aqueous phase containing water-soluble dispersant B, optionally with the addition of a water-soluble one Salt are subjected to a radical polymerization and, after the polymerization, a water-soluble acid is added to the water-soluble or water-swellable polymer A thus obtained, the acid in amounts of 0.1-5% by weight and the salt in amounts up to a maximum of 3.0 % By weight, based in each case on the total dispersion, are added and the total amount of salt and acid is at most 5% by weight, based on the total dispersion. |