Abstract
High-molecular-weight amphiphilic copolymers having both hydrophilic side chain of methoxy polyethyleneglycol (MPEG) and hydrophobic side chain of methoxy-polypropyleneglycol (MPPG) or lauryl as a polymeric dispersant employed for disperse dyes in textile-inkjet inks were proposed. Some random and block copolymers synthesized by means of ordinary solution polymerization, were brought to aqueous dispersions of disperse dye and then made them into inkjet ink. Fine dye-particles, which were dispersed using these polymeric dispersants in the aqueous inkjet ink resulted in smooth gushing of the ink via a piezo-type inkjet printer, and brought out a high uptake capability of dye onto untreated polyester fabric when compared to printing with a dispersant-free inkjet ink. In addition,it was revealed that color strength of the untreated polyester fabric printed with the inkjet inks using these dispersants,as represented by K/S values, showed the values close to that of color print via pretreated polyester fabric.
