Aqueous binder compositions

An aqueous binder composition comprising

• (a) an aqueous polymer latex of a film forming carboxylated polymer;
• (b) 0.05 to 7.5% by weight, based on the dry weight of the carboxylated polymer, of a branched polyetheramine polyol dissolved in the aqueous phase of the polymer latex, wherein essentially all of the amino groups in the branched polyetheramine polyol are tertiary amine groups, and wherein the branched polyetheramine polyol contains on average from 4 to 8.2 mol/kg of tertiary amino groups;
• wherein the aqueous polymer latex of the carboxylated polymer is obtained by a radical emulsion polymerization of a monomer composition M, where the monomer composition M consists of
• (a) 70% by weight to 99.95% by weight, based on the total weight of the monomer composition M, of one or more ethylenically unsaturated monomers M1, which are selected from C1-C20-alkyl esters of monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms, di-C1-C20-alkyl esters of monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms, C5-C20-cycloalkyl esters of monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms, vinylesters of C1-C20-alkanoic acids, vinyl aromatic monomers, C2-C6 monoolefins and butadiene;
• (b) 0.05% by weight to 10% by weight, based on the total weight of the monomer composition M, of one or more monoethylenically unsaturated monomers M2, which are selected from monoethylenicaly unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms;
• and
• (c) 0% by weight to 20% by weight, based on the total weight of the monomer composition M, of one or more non-ionic monomers M3, which are different from monomers M1.