Anti-fog coating comprising aqueous polymeric dispersion, crosslinker and acid or salt of polyalkylene oxide

A coating composition comprising

• an aqueous polymeric dispersion;
• a crosslinker comprising an aziridine crosslinker;
• and
• a polyalkylene oxide backbone terminating with an acid or salt group on each end, wherein the polyalkylene oxide backbone comprises a copolymer of polyethylene oxide and polypropylene oxide, and wherein the polyalkylene oxide backbone is linked to the acid or salt group on each end by a divalent linking group, the divalent linking group selected from:
• —CH2NHCOC2H4—, —NHCONH—, —(C═O)—O—, —CONH—, —COS—, —CS2—, —S—, —O—, and —SCONH—.