Consolidated nonwoven

A consolidated nonwoven consolidated by treatment with an aqueous binder composition comprising:

• a polymer P,
• a polyvinylalcohol,
• optionally a starch compound S and
• optionally at least one metal compound M selected from the group consisting of magnesium, calcium and zinc, in the form of an oxide, hydroxide, carbonate or bicarbonate, wherein the polymer P is obtained by free radical aqueous emulsion polymerization of a monomer mixture of
• 75 to 99% by weight of one or more monomers a) selected from the group consisting of esters of one or more of acrylic and methacrylic acid with alkanols of 1 to 12 carbon atoms, aliphatic conjugated diene and aromatic vinyl compound,
• 1 to 25% by weight of one or more monomers b) selected from the group consisting of N-methylolacrylamide, N-methylolmethacrylamide, glycidyl methacrylate and carboxylic acid-functional ethylenically unsaturated monomers, and
• ≥0 to 15% by weight of one or more further ethylenically unsaturated monomer c) different from any of monomers a) and b),
• wherein the amounts of monomers a) to c) sum to 100 wt %.

An aqueous binder composition comprising

• a polymer P,
• a polyvinyl alcohol,
• optionally a starch compound S, and
• optionally at least one metal compound M selected from the group consisting of magnesium, calcium and zinc, in the form of an oxide, hydroxide, carbonate or bicarbonate,
• wherein the polymer P is obtainable by free radical aqueous emulsion polymerization of a monomer mixture of
• 75 to 99% by weight of one or more monomers a) selected from the group consisting of esters of one or more of acrylic and methacrylic acid with alkanols of 1 to 12 carbon atoms, aliphatic conjugated diene and aromatic vinyl compound,
• 1 to 25% by weight of one or more monomers b) selected from the group consisting of N-methylolacrylamide, N-methylolmethacrylamide, glycidyl meth-acrylate and carboxylic acid-functional ethylenically unsaturated monomers, and
• ≥0 to 15% by weight of one or more further ethylenically unsaturated monomer c) different from any of monomers a) and b)
• wherein the amounts of monomers a) to c) sum to 100 wt %.