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 or 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.
Claims30
An ink for an ink-jet recording process comprising a disperse dye and a water-soluble addition 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.
An aqueous ink for an ink-jet recording process, comprising a disperse dye and 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.
A process for maintaining the hand of a printed textile made of polyester, the printed textile being made by a process comprising the steps of:
- imparting an aqueous ink on a textile made of polyester with an ink-jet printing machine, fixing the ink onto the textile;
- and washing the polyester to which the ink is fixed,
- wherein the aqueous ink comprises a dye and 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.
A process for reducing staining on a printed cotton textile which is produced by a process comprising the steps of:
- imparting an aqueous ink on a cotton textile with an ink-jet printing machine;
- fixing the ink onto the cotton textile and washing the cotton textile to which the ink is fixed,
- wherein the aqueous ink comprises a disperse dye and 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.