An optical sheet 10 of the present invention includes a laminate including a polarizing layer 4 containing at least one kind of a light absorbing agent and having a polarizing function, and a protective layer 1 laminated on the polarizing layer 4, in which in the polarizing layer 4, a value of a* is 0 or more and 30 or less and a value of b* is 0 or more and 30 or less in an L*a*b* color system defined by JIS Z 8781-4, and in the optical sheet 10, a size of a Q Blue value defined by Australian Standard Australia/New Zealand Standard 1067-2016 is 0.70 or more. Thus, even when the optical sheet is toned to brown, blue light can be distinguished with excellent distinguishability.

Provided is a composition which can be used for formation of an optical film having high quality and a high dichroic ratio even after the composition is stored for a predetermined period of time. The composition includes a compound represented by the general formula (A) and a compound represented by the general formula (B), wherein R.sup.1a in the general formula (A) and R.sup.1b in the general formula (B) are mutually different groups.

R.sup.1a—Ar.sup.1a—N═N—Ar.sup.2a—N═N—Ar.sup.3a—R.sup.10a   (A)

R.sup.1b—Ar.sup.1b—N═N—Ar.sup.2b—N═N—Ar.sup.3b—R.sup.10a   (B)

This invention relates to bis-azo colorants for use as bluing agents, laundry care compositions comprising bis-azo colorants that may serve as bluing agents, processes for making such bluing agents and laundry care compositions and methods of using the same. The bluing agents are generally comprised of at least two components: at least one chromophore component and at least one polymeric component. These bluing agents are advantageous in providing a whitening effect to fabrics, while not building up over time and causing undesirable blue discoloration to the treated fabrics.

This invention relates to bis-azo colorants for use as bluing agents, laundry care compositions comprising bis-azo colorants that may serve as bluing agents, processes for making such bluing agents and laundry care compositions and methods of using the same. The bluing agents are generally comprised of at least two components: at least one chromophore component and at least one polymeric component. These bluing agents are advantageous in providing a whitening effect to fabrics, while not building up over time and causing undesirable blue discoloration to the treated fabrics.

An object of the invention is to provide a coloring composition which can form a light absorption anisotropic film having an excellent dichroic ratio, a dichroic dye compound, a light absorption anisotropic film, a laminate, and an image display device. A coloring composition according to the invention contains a dichroic dye compound which has a Hansen solubility parameter of 17.5 or greater and has a structure represented by Formula (1), and a liquid crystalline compound.
L.sup.1-A.sup.1-NN-A.sup.2-NN-A.sup.3-L.sup.2(1) in Formula (1), A.sup.1, A.sup.2, and A.sup.3 each independently represent a divalent aromatic group which may have a substituent. Any one of A.sup.1, A.sup.2, and A.sup.3 represents a divalent thienothiazole group which may have a substituent. In Formula (1), L.sup.1 and L.sup.2 each independently represent a substituent.

An object of the invention is to provide a coloring composition which can form a light absorption anisotropic film having an excellent dichroic ratio, a dichroic dye compound, a light absorption anisotropic film, a laminate, and an image display device. A coloring composition according to the invention contains a dichroic dye compound which has a Hansen solubility parameter of 17.5 or greater and has a structure represented by Formula (1), and a liquid crystalline compound.
L.sup.1-A.sup.1-NN-A.sup.2-NN-A.sup.3-L.sup.2(1) in Formula (1), A.sup.1, A.sup.2, and A.sup.3 each independently represent a divalent aromatic group which may have a substituent. Any one of A.sup.1, A.sup.2, and A.sup.3 represents a divalent thienothiazole group which may have a substituent. In Formula (1), L.sup.1 and L.sup.2 each independently represent a substituent.

Provided is an ink composition for ink jet printing containing a coloring material, a water-soluble organic solvent, and water. The coloring material contains a compound A represented by Formula (1) and a compound B represented by Formula (2) and a mass ratio (a/b) of a content a of the compound A to a content b of the compound B is 1.0 or more and 99 or less.

Provided is an ink composition for ink jet printing containing a coloring material, a water-soluble organic solvent, and water. The coloring material contains a compound A represented by Formula (1) and a compound B represented by Formula (2) and a mass ratio (a/b) of a content a of the compound A to a content b of the compound B is 1.0 or more and 99 or less.

This invention relates to polymer particles, a process for their preparation, the use of these particles for the preparation of an electrophoretic device, electrophoretic displays comprising such particle, and new polymerizable dyes.

A dichroic dye compound has an excellent alignment property when used in a light absorption anisotropic film, and has excellent solubility. A coloring composition contains the dichroic dye compound having a structure represented by Formula (1). In Formula (1), A and B represent a crosslinkable group, a and b are 0 or 1, and a+b is not less than 1. L.sub.1 and L.sub.2 represent a monovalent substituent, a single bond, or a divalent linking group. Each of Ar.sub.1 to Ar.sub.3 represents an aromatic hydrocarbon group or heterocyclic group. R.sub.1 to R.sub.3 represent a monovalent substituent. k represents an integer of 1 to 4. n1, n2, and n3 represent an integer of 0 to 4. In a case where k is 1, n1+n2+n3 is not less than 0, and in a case where k is not less than 2, n1+n2+n3 is not less than 1.

##STR00001##