Patent ID: 8329800

Claim:
An aqueous binder composition, comprising: a) a water-insoluble polymer in the form of dispersed polymer particles having a glass transition temperature in a range from −50° C. to 50° C., obtained by free-radical polymerization of ethylenically unsaturated monomers M, the monomers M comprising: a1) 80% to 99.9% by weight, based on a total amount of monomers M, of at least one neutral, monoethylenically unsaturated monomer M1 of low water-solubility; and a2) 0.1% to 15% by weight, based on the total amount of monomers M, of at least one monoethylenically unsaturated monomer M2 which comprises at least one selected from the group consisting of a carboxyl group and a carboxamido group (CONH 2 ); and b) at least one selected from the group consisting of boric acid and a salt of boric acid.