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In this, work the performance of several dye transfer inhibitors (DTI) copolymers (PVP, PVNO and PVNO with PVP) was tested for use as DTIs in washing softened undyed cotton fabric, in the presence of a direct dye in the washing bath, with and without water hardness. Three direct dyes were tested: red, blue and yellow. The detergent used was composed of an LAS anionic surfactant and a non-ionic fatty alcohol ethoxylate surfactant with 7¿m. OE, both separately and in the different molar proportions anionic with non ionic, at a total concentration of 5¿×¿10-3¿ M, and in the presence of zeolite as a builder. Washing temperature was 40°C and washing time was 30¿min. Staining of the softened undyed cotton fabric was assessed as the CIELAB colour differences between the original fabric and the stained fabric after washing.The different DTIs and the dye in the washing bath with and without water hardness were tested
CitationCarrion, F. Influence of the dye transfer inhibitors for the washing of softened cotton fabric. "Journal of the Textile Institute", 2014, vol. 105, núm. 2, p. 150-155.
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