Fitzpatrick, Cella, Harper & Scinto
Water-soluble addition polymer and aqueous ink using the same
 The present invention relates to a water-soluble addition polymer which is produced from a carboxylated diol represented by the following general formula (I) and a polyisocyanate and has an acid value of 100 or 250, and an aqueous ink using this polymer as a dispersant for a disperse dye: ##STR1## wherein the residue A is an aromatic, alicyclic or aliphatic polybasic acid residue, and the residue B is a trivalent aliphatic alcohol residue. 
Canon Kabushiki Kaisha
C C Y C C Y
C08G C08G Y10S C09D C08G Y10S
inventional inventional additional inventional inventional additional
Shinichi Hiromichi Shoji Koromo Mariko Tomoya Masahiro
Hakamada Noguchi Koike Shirota Suzuki Yamamoto Haruta