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US 12,735,599 B2Granted
Aqueous pigment dispersion and inkjet ink
AssigneeDIC Corporation
InventorsYuuya Enomoto, Toshihiro Seki, Maiko Kitade
Life of this patent
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Abstract
The present invention relates to an aqueous pigment dispersion containing a bisacetoacetarylide pigment (A), a dispersant (B), and an aqueous medium (C) and having an absorbance ratio represented by (absorbance at a wavelength of 408 nm)/(absorbance at a wavelength of 450 nm) of 1.40 or more and to an inkjet ink containing the aqueous pigment dispersion.
Claims6
An aqueous inkjet ink for printing on a textile product comprising an aqueous pigment dispersion, comprising:
- a bisacetoacetarylide pigment (A) which is C.I. Pigment Yellow 155;
- a dispersant (B) which is styrene-(meth)acrylate-(meth) acrylic acid-based copolymer;
- and
- an aqueous medium (C),
- the aqueous pigment dispersion having an absorbance ratio represented by (absorbance at a wavelength of 408 nm)/(absorbance at a wavelength of 450 nm) of 1.40 or more,
- wherein a pigment sedimentation velocity is 18.5 μm/day or less.
3 more elements
Dependencies are inferred from the claim text.