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;
• wherein the aqueous polymer latex of the carboxylated polymer is obtainable 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-monoolefines 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 monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms;
• (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.

A method comprising utilizing a branched polyetheramine polyol, wherein essentially all of the amino groups in the branched polyetheramine polyol are tertiary amine groups, as an additive for an aqueous polymer latex of a film forming carboxylated polymer, where the branched polyetheramine polyol is used in an amount of 0.05 to 7.5% by weight, based on the dry weight of the carboxylated polymer,

• wherein the aqueous polymer latex of the carboxylated polymer is obtainable 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-monoolefines 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 monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms;
• 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.