Production of nonwoven fabrics

In a process for binding nonwoven fabrics by impregnating the fabrics with anionic or non-ionic aqueous heat-sensitized polymer dispersions and drying the impregnated fabrics at elevated temperature in the usual manner, the improvement of using a polymer dispersion containing 2 to 10 percent by weight, based on the polymer, of a polyalkoxylated aliphatic amine containing from 1 to 10 amino groups and being alkoxylated with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and both ethylene and propylene oxides, said polyalkoxylated amine having inverse solubility and a mean molecular weight of from 200 to 15,000, as measured by the hydroxyl number determined by the acetic anhydride method, and said polymer dispersion containing said polyalkoxylated amine having a pH below 6.