Crosslinkable aqueous polymer dispersions with aminoacid crosslinker for textile

An aqueous coating composition comprising:

• a) an aqueous polymer dispersion, said polymer remaining insoluble in water after neutralization and remaining in the form of dispersed polymeric particles having a mean particle size varying from 10 to 1000 nm, wherein said polymer a) comprises monomeric units from the following monomers:
• a1) at least one ethylenically unsaturated monomer selected from the group consisting of acrylic and vinylinic monomers, with the exception of (meth)acrylic acid monomers, and
• a2) at least one ethylenically unsaturated monomer different from a1) and bearing at least two carboxylic acid functional groups at a weight content with respect to the total weight of said copolymer of from 0.1% to 15%;
• and
• b) a crosslinker selected from amino acids bearing at least two amino functional groups capable of reacting with said carboxylic acid functional groups,
• where a molar ratio of the amino groups of said crosslinker b) to the carboxy groups of said polymer of dispersion a) is of from 0.1 to 3.0.