Water-soluble addition polymer and aqueous ink using the same
AssigneeCanon Kabushiki Kaisha
InventorsHiromichi Noguchi, Masahiro Haruta, Shoji Koike, Koromo Shirota, Tomoya Yamamoto, Mariko Suzuki, Shinichi Hakamada
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Abstract
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 to 250, and an aqueous ink using this polymer as a dispersant for a disperse dye: wherein the residue A is an aromatic, alicyclic or aliphatic polybasic acid residue, and the residue B is a trivalent aliphatic alcohol residue.
Claims10
A polymer produced from a carboxylated diol represented by the following general formula (I) and a polyisocyanate, and having an acid value in a range from 100 to 250:
- wherein A is an aromatic, alicyclic or aliphatic polybasic acid residue, and B is a trivalent aliphatic alcohol residue that is not grafted with vinyl monomer.
A water-soluble urethane polymer represented by the following formula:
- wherein R1 represents an ester residue from a carboxylic acid and a multivalent alcohol, R2 represents a residue of the diisocyanate compound, and n represents an integer in a range from 1 to 100, and wherein the water-soluble urethane polymer has an acid value of 100 to 250.
Dependencies are inferred from the claim text.