Electrowetting element including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole. The plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.

Electrowetting element including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole. The plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.

Provided are a pigment dispersion liquid including a pigment, a polymer dispersant, and water, in which the pigment is a pigment including a compound represented by General Formula (1) as described in the specification, a tautomer thereof, or a salt of the compound or the tautomer, and the polymer dispersant includes a polymer compound having a repeating unit represented by General Formula (2-1) and a repeating unit represented by General Formula (2-2) as described in the specification, and having a structure represented by General Formula (3) introduced into at least one terminal of the main chain; and an inkjet ink including this pigment dispersion liquid.

##STR00001##

In General Formula (3), L represents a linking group; R.sub.4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; and the symbol * represents a linking bond.

Provided are a pigment dispersion liquid including a pigment, a polymer dispersant, and water, in which the pigment is a pigment including a compound represented by General Formula (1) as described in the specification, a tautomer thereof, or a salt of the compound or the tautomer, and the polymer dispersant includes a polymer compound having a repeating unit represented by General Formula (2-1) and a repeating unit represented by General Formula (2-2) as described in the specification, and having a structure represented by General Formula (3) introduced into at least one terminal of the main chain; and an inkjet ink including this pigment dispersion liquid.

##STR00001##

In General Formula (3), L represents a linking group; R.sub.4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; and the symbol * represents a linking bond.

Provided are an aqueous pigment dispersion that includes an azo pigment represented by Formula (1) as described in the specification, and/or a tautomer thereof, the azo pigment showing characteristic X-ray diffraction peaks at least at Bragg's angles (20.2) of 4.8, 7.2, 9.7, 20.0, 17.3, 26.0, and 26.7 in CuK characteristic X-ray diffraction; a first dispersant; a second dispersant; and water, the aqueous pigment dispersion being obtained via the following Step b.

Step b: a step of dispersing an azo pigment represented by Formula (1) and/or a tautomer thereof, a first dispersant, and a second dispersant in water and thereby obtaining an aqueous pigment dispersion.

Provided are an aqueous pigment dispersion that includes an azo pigment represented by Formula (1) as described in the specification, and/or a tautomer thereof, the azo pigment showing characteristic X-ray diffraction peaks at least at Bragg's angles (20.2) of 4.8, 7.2, 9.7, 20.0, 17.3, 26.0, and 26.7 in CuK characteristic X-ray diffraction; a first dispersant; a second dispersant; and water, the aqueous pigment dispersion being obtained via the following Step b.

Step b: a step of dispersing an azo pigment represented by Formula (1) and/or a tautomer thereof, a first dispersant, and a second dispersant in water and thereby obtaining an aqueous pigment dispersion.

The present invention provides a dye compound excellent in both chroma and light fastness, an ink, and a resist composition for a color filter. The present invention provides an ink and a resist composition for a color filter, in which each of the ink and the resist composition contains a pyridone azo compound having a specific structure.

The present invention provides a dye compound excellent in both chroma and light fastness, an ink, and a resist composition for a color filter. The present invention provides an ink and a resist composition for a color filter, in which each of the ink and the resist composition contains a pyridone azo compound having a specific structure.

The present invention relates to dyes of formula (1) ##STR00001##
a process for preparing them and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.

The present invention relates to dyes of formula (1) ##STR00001##
a process for preparing them and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.