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Two UV-absorbers, Tinuvin 477-DW and Tinuvin 5333-DW were used as active agents in this work. These were added in two different amounts (1.0% and 2.0%) in water-based disperse ink-jet inks. The surface tension, pH, viscosity and conductivity of the prepared formulations were monitored over a period of 90 days in order to estimate the ink stability and the compatibility of the UV-absorbers with the ink constituents. The inks were used for ink-jet printing on paper, transfer printing on polyester and polyamide and thermostabilization. Wash light and rub fastness were evaluated on the printed samples. Color coordinates were measured. Qualitative determination of the active agents, adsorbed on the printed samples was made by using UV-Vis Spectroscopy.

Disperse Ink-Jet Inks with UV-Absorbers as Active Agents for Digital Printing to Polyester and Polyamide Fibres