| abstract |
The invention relates to a chemical composition redispersible in aqueous media, containing (a) a copolymer based on styrene and/or at least one alkyl (meth)acrylate, the quantity of styrene and/or alkyl (meth)acrylate being ≧ 50% by weight, based on the total monomers, and at least one further comonomer, and (b) a water-soluble polymeric protective colloid, wherein about 2 to 30 parts per weight of the water-soluble polymeric protective colloid are allotted to 100 parts by weight of the copolymer, and (c) optional further additives as required. The copolymer contains appoximately 0.1 to 50% by weight units of an epoxide-group-containing ethylenically unsaturated comonomer. Such units show reactive epoxide groups. Polymeric acryllc protective colloids which have monomer units with at least one aldehyde or ketone group are excluded. The invention relates further to an aqueous polymer dispersion of said chemical composition, the production of same and a special method for obtaining the chemical composition from the polymer dispersion and special applications of the aqueous polymer dispersion and the chemical composition. |