BINDER FOR POLYLACTIC ACID-BASED AQUEOUS INK, AQUEOUS EMULSION, AND AQUEOUS INK

摘要

PROBLEM TO BE SOLVED: To provide a binder for an aqueous ink having such self-emulsifying function as to enable a stable water-based emulsion to be formed even if no emulsifier is added, and also containing a polylactic acid-based resin having plant material-derived resin skeleton, and to provide an aqueous emulsion and an aqueous ink each containing the binder.;SOLUTION: The binder for an aqueous ink contains a copolymerized polyurethane resin having in the molecule polylactic acid segments and metal sulfonate-containing segments. An aqueous emulsion for preparing an aqueous ink, containing the binder, and the aqueous ink, are also provided.;COPYRIGHT: (C)2010,JPO&INPIT