| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an aqueous printing ink composition which is excellent in on-board stability and printing suitability in ink printing, has good printing qualities, and is biodegradable. <P>SOLUTION: The biodegradable aqueous printing ink composition comprises a colorant, a binder resin, and an aqueous medium containing water. As the binder resin, a polylactic acid resin aqueous dispersion, which is prepared by dispersing a polylactic acid resin in an aqueous medium in the presence of a poly(ethylene oxide/propylene oxide) block polymer having a weight average molecular weight of 5,000-50,000 and an HLB of 11-20, is used. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
