PREPARATION FOR BRIGHTENING SYNTHETIC FIBRES, PROCESS FOR ITS PREPARATION AND PROCESS FOR OPTICAL BRIGHTENING

摘要

The formulation for brightening synthetic fibers or mixtures of synthetic fibers and natural fibers, which is an aqueous dispersion comprising at least one finely divided optical brightener and a dispersing agent, wherein the improvement comprises the dispersing agent being a water-soluble or water-dispersible polyester containing at least one phosphonic acid ester moiety.