A pigment composition contains: an azo pigment that is a reaction product between a coupler and a base; and a pigment derivative, and a content of o-anisidine derived from the coupler is less than or equal to 20 mg/kg in the entire pigment composition. A method for producing the pigment composition includes, after reaction between a coupler and a base to generate an azo pigment, or during the reaction between the coupler and the base, adding a remover for o-anisidine derived from the coupler.

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 novel direct dyes and compositions comprising them for dyeing keratin fibers especially human hair. The novel dyes of the present invention have benzothiophene structure providing intensive and homogeneous dyeing on keratin fibers, especially human hair.

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.

A compound represented by formula: is disclosed. R is hydrogen or alkyl; X is alkylene; Y is a bond, ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, thiourea, alkylene, arylalkylene, alkylarylene, or arylene, wherein alkylene, arylalkylene, alkylarylene, and arylene are optionally at least one of interrupted or terminated by at least one of an ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, or thiourea; and Z is an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrenyl, or a terminal alkenylene having at least three carbon atoms. A composition including the compound, and a method of determining the degree of cure of a curable polymeric resin are also disclosed. ##STR00001##

Solution comprising about 1 to about 25 wt % of a dye that loses its colour during radical cure and about 75 to about 99 wt % of a solvent mixture, said solvent mixture comprising cyclopentanone and dimethylsulphoxide in a weight ratio of about 60:40 to about 95:5.

The disclosure relates to a method for improving the alkali resistance and oxidation resistance of a benzothiazole disperse dye, and belongs to the field of disperse dyes. In the disclosure, 4 kinds of diazo components and 8 kinds of coupling components are used in designing and synthesizing 28 thiazole heterocyclic azo disperse dyes, and the alkali resistance and oxidation resistance of the disperse dyes are improved. Structure confirmation is performed on the synthetic disperse dyes, and the alkali resistance, oxidation resistance and other dyeing properties of the disperse dyes are tested. According to the method for improving the alkali resistance and oxidation resistance of the benzothiazole disperse dye provided in the disclosure, a relationship between a dye structure and the alkali resistance and oxidation resistance is determined, the disperse dyes with excellent alkali resistance and oxidation resistance are obtained, and the dyeing performance is stable under a dyeing condition of 10 g/L of sodium hydroxide or 5 g/L of hydrogen peroxide. This kind of dyes can be applied to a one bath for bleaching and dyeing of polyester and cotton and a one bath for deweighting and dyeing of polyester, dyeing and finishing in a short process are achieved, and great ecological and economic benefits are obtained.

The disclosure relates to a method for improving the alkali resistance and oxidation resistance of a benzisothiazole disperse dye, and belongs to the technical field of textiles. In the disclosure, azo alkali-resistant disperse dyes with benzisothiazole as a diazo component are synthesized based on structural design of the dyes, the alkali resistance and oxygen bleaching resistance of the heterocyclic azo disperse dyes are improved by introducing different groups to a coupling component, a series of benzisothiazole disperse dyes having gradient differences in alkali resistance and oxidation resistance are obtained, disperse dyes capable of meeting requirements of a one-bath process for cotton bleaching and disperse dyeing of a polyester-cotton blended fabric or a one-bath process for alkali deweighting and disperse dyeing of polyester fabrics are determined, and a reference can be provided for structural design of disperse dyes with alkali resistance and oxidation resistance.

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.

A laundry detergent composition comprising: (i) from 2 to 70 wt. % of a surfactant; and (ii) from 0.00001 to 0.1 wt. % of shading dye which is covalently bound to at least one alkoxy-CH.sub.2CHO or —CH.sub.2CHO capped polyalkoxy group.