This invention relates to heterocyclic red azo colorants for seed treatment applications. The red azo colorants contain a heterocycle that includes one nitrogen atom and one sulfur atom and are free from electron-withdrawing groups on the heterocycle. Seeds for use in horticultural/agriculture applications that are coated with the heterocyclic azo colorants provide anti-counterfeiting properties to the coated seeds. A color change phenomenon is observed when the coated seeds are exposed to an acidic material, such as vinegar, and provides evidence of the authenticity of the coated seeds. The invention also relates to agricultural formulations containing the heterocyclic red azo colorants that can be used as an anti-counterfeit agents.

The present invention relates to laundry care compositions comprising carboxylate dyes. The laundry care compositions can be laundry detergent compositions, laundry additive compositions such as fabric enhancer compositions or bleach additive compositions. Preferably, the laundry care composition is a laundry detergent composition. The composition can be a solid, such as a powder, tablet or bar, or a liquid. The composition can be in the form of a unit dose, such as pouch. Suitable unit dose pouches include single compartment and multi-compartment pouches.

Disclosed is a mono-azo dichroic dye compound represented by the following Chemical Formula 1, a composition for polarizing plate, a polarizing plate, and an optical device.

##STR00001##

In Chemical Formula 1, Z represents any one selected from the group consisting of CN, COOR.sub.11, indanone and 1,3-dioxoindane, wherein R.sub.11 is any one selected from the group consisting of alkyl groups, aryl groups, and substituted or non-substituted heteroaryl groups. The mono-azo dichroic dye compound shows excellent dichroic properties, and has excellent heat resistance and photo-resistance, and thus may be used advantageously for a dye-based polarizing plate.

Disclosed is a mono-azo dichroic dye compound represented by the following Chemical Formula 1, a composition for polarizing plate, a polarizing plate, and an optical device.

##STR00001##

In Chemical Formula 1, R.sub.3 represents a substituted or non-substituted heterocyclic group having 1-20 carbon atoms. The mono-azo dichroic dye compound shows excellent dichroic properties, and has excellent heat resistance and photo-resistance, and thus may be used advantageously for a dye-based polarizing plate.

The present invention relates to a colorant mixture comprising (A) at least one blue- or black-dyeing disperse dye of formula ##STR00001## wherein R.sub.1 denotes hydrogen or halogen, R.sub.2 and R.sub.3 are each independently of the other hydrogen; C.sub.1-C.sub.8-alkyl which is unsubstituted or substituted with hydroxy, cyano, C.sub.1-C.sub.4alkoxy or halogen; —(CH.sub.2).sub.n—O—(CH.sub.2).sub.mR.sub.4, wherein R.sub.4 denotes hydrogen or C.sub.1-C.sub.8-alkyl, n is a number from 2 to 6 and m is a number from 0 to 6; C.sub.5-C.sub.24aryl which is unsubstituted or substituted with hydroxy, carboxy, cyano, C.sub.1-C.sub.8alkyl, C.sub.1-C.sub.4alkoxy or halogen; or C.sub.6-C.sub.30aralkyl which is unsubstituted or substituted with hydroxy, cyano, C.sub.1-C.sub.4alkyl, C.sub.1-C.sub.8alkoxy groups or halogen; and (B) at least one yellow-, orange- or red-dyeing disperse dye, solvent dye, vat dye or pigment; and to the use thereof in dyeing or printing cellulose or cellulose blend fibre materials.

The present invention relates to a colorant mixture comprising

(A) at least one blue- or black-dyeing disperse dye of formula

##STR00001## wherein R.sub.1 denotes hydrogen or halogen, R.sub.2 and R.sub.3 are each independently of the other hydrogen; C.sub.1-C.sub.8-alkyl which is unsubstituted or substituted with hydroxy, cyano, C.sub.1-C.sub.4alkoxy or halogen; —(CH.sub.2).sub.n—O—(CH.sub.2).sub.mR.sub.4, wherein R.sub.4 denotes hydrogen or C.sub.1-C.sub.8-alkyl, n is a number from 2 to 6 and m is a number from 0 to 6; C.sub.5-C.sub.24aryl which is unsubstituted or substituted with hydroxy, carboxy, cyano, C.sub.1-C.sub.8alkyl, C.sub.1-C.sub.4alkoxy or halogen; or C.sub.6-C.sub.30aralkyl which is unsubstituted or substituted with hydroxy, cyano, C.sub.1-C.sub.4alkyl, C.sub.1-C.sub.8alkoxy groups or halogen; and

(B) at least one yellow-, orange- or red-dyeing disperse dye, solvent dye, vat dye or pigment; and to the use thereof in dyeing or printing cellulose or cellulose blend fibre materials.

Provided are a dye compound, a composition comprising the dye compound, and a display device using the dye compound. The dye compound is represented by Formula 1.

##STR00001##

The present invention relates to azo dyes of formula ##STR00001##
wherein R.sub.1 denotes C.sub.1-C.sub.12 alkyl which is unsubstituted or substituted by one or more C.sub.1-C.sub.12 alkoxy groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical O, S, NR.sub.4, COO or OOC; R.sub.4 is hydrogen or C.sub.1-C.sub.12 alkyl; either R.sub.2 is cyano and R.sub.3 is halogen or R.sub.2 is halogen and R.sub.3 is cyano; and Ar represents a carbocyclic or heterocyclic aromatic radical, to the process for the preparation thereof, to mixtures containing said dyes and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic fiber materials, more especially textile materials.

This invention relates to heterocyclic red azo colorants for seed treatment applications. The red azo colorants contain a heterocycle that includes one nitrogen atom and one sulfur atom and are free from electron-withdrawing groups on the heterocycle. Seeds for use in horticultural/agriculture applications that are coated with the heterocyclic azo colorants provide anti-counterfeiting properties to the coated seeds. A color change phenomenon is observed when the coated seeds are exposed to an acidic material, such as vinegar, and provides evidence of the authenticity of the coated seeds. The invention also relates to agricultural formulations containing the heterocyclic red azo colorants that can be used as an anti-counterfeit agents.

Disclosed is a mono-azo dichroic dye compound represented by the following Chemical Formula 1, a composition for polarizing plate, a polarizing plate, and an optical device. ##STR00001## In Chemical Formula 1, R.sub.3 represents a substituted or non-substituted heterocyclic group having 1-20 carbon atoms. The mono-azo dichroic dye compound shows excellent dichroic properties, and has excellent heat resistance and photo-resistance, and thus may be used advantageously for a dye-based polarizing plate.