Synthesis method for self-dispersible pigment, self-dispersible pigment, ink jet ink, ink cartridge, and ink jet recording method
AssigneeCanon Kabushiki Kaisha
InventorsKatsuhiro Hayashi, Junichi Sakai, Kenji Nishiguchi
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Abstract
Provided is a synthesis method for a self-dispersible pigment, including performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.
Claims13
A synthesis method for a self-dispersible pigment, comprising performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.
A self-dispersible pigment, comprising:
- a pigment particle;
- and
- a functional group represented by the following general formula (1) bonded to the a surface of the pigment particle:
- -(X)p—Y—(Z—COO)nM General formula (1)
- in the general formula (1):
- X represents another atomic group;
- p represents a number of 0 or 1;
- Y represents an ester group;
- Z represents an alkylene group;
- n represents a number of 1 or more and 20 or less;
- M represents a hydrogen atom, an alkali metal, ammonium, or an organic ammonium.
Dependencies are inferred from the claim text.