Abstract:

For cationic dyeable polyester fiber, an anti-reactive dye staining agent was prepared by using polyvinylpyrrolidione K30, cetyl trimethyl ammonium bromide and polyoxyethylene alkyl amine via experiment optimum design. The effect of anti-staining agent on spectra absorbability of aqueous dye solution was studied, and its universal applicability in reactive dyeing was also discussed. Polyester staining of reactive dyes can be effectively weakened by the compound of polyvinylpyrrolidione K30, cetyl trimethyl ammonium bromide and polyoxyethylene alkyl amine, and the best anti-staining effect can be achieved when their mass ratio was kept at 5︰1︰5. There is no visible effect of anti-staining agent on the spectra absorption curve, maximum absorption wavelength and absorbance of aqueous dye solution. And the anti-staining agent shows good universal applicability in reactive dyes.

Key words: cationic dyeable polyester, polyester fiber, reactive dye, anti-staining agent