Smear resistant inkjet inks
Inkjet inks are provided, relating in particular to smear resistant inkjet inks, and even more particularly to smear resistant pigmented aqueous inkjet inks comprising polyurethane dispersions and self-dispersing pigments. The polyurethane dispersions have a glass transition temperature Tg greater than −30 ° C. to less than about 35 ° C. and have at least one of the following thermal properties: loss modulus E″ of 1.7 to 5×108 pascals, and/or a peak tan delta is 0.23 to 0.65, where the glass transition temperature, peak tan delta and the loss modulus are measured by dynamic mechanical analysis on a film prepared from the polyurethane dispersion.
E I DU PONT DE NEMOURS AND COMPANY
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Jose Esteban Xiaoqing Daniel C.
Valentini Li Kraiter