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 disperse azo dyes of formula ##STR00001##
wherein R.sub.1 is bromo, nitro, cyano, methyl, methoxy or trifluoromethyl; R.sub.2 is hydrogen, chloro, bromo or trifluoromethyl; R.sub.3 is hydrogen, chloro, bromo, methoxy, trifluoromethyl, nitro or cyano; and R.sub.4 is methyl, ethyl, n-propyl, 2-methoxyethyl, methoxycarbonylmethyl or 2-methoxycarbonylethyl;
with the proviso that R.sub.1 is cyano in case R.sub.2 denotes chloro or bromo,
to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

An azo compound excellent in solubility in solvent and having a high absorbance coefficient is disclosed, as well as an ink containing the azo compound. Such an ink contains a solvent having a relative permittivity at 22° C. and at a measurement frequency of 1 kHz of 3 or less and having a solubility in water at 25° C. of 20 mg/L or less, and an azo compound.

The present invention relates to new profluorophores and conjugates thereof and their use for the detection of target molecule in a sample, in particular nucleic acid target molecules. The invention relates to new profluorophores and new fluorophores and methods of use thereof particularly useful in the fields of diagnostics and quality control.

The present invention relates to disperse azo dyes of formula

##STR00001##

wherein

R.sub.1 is bromo, nitro, cyano, methyl, methoxy or trifluoromethyl;

R.sub.2 is hydrogen, chloro, bromo or trifluoromethyl;

R.sub.3 is hydrogen, chloro, bromo, methoxy, trifluoromethyl, nitro or cyano; and

R.sub.4 is methyl, ethyl, n-propyl, 2-methoxyethyl, methoxycarbonylmethyl or 2-methoxycarbonylethyl;

with the proviso that R.sub.1 is cyano in case R.sub.2 denotes chloro or bromo,

to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

The present invention relates to new profluorophores and conjugates thereof and their use for the detection of target molecule in a sample, in particular nucleic acid target molecules. The invention relates to new profluorophores and new fluorophores and methods of use thereof particularly useful in the fields of diagnostics and quality control.

A compound represented by formula:

##STR00001##

and a treated filler having the compound on at least a portion of its surface. R is hydrogen or alkyl. X is alkylene, arylalkylene, or alkylarylene, each optionally interrupted by at least one of an ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, or thiourea, with alkylene optionally interrupted by arylene. W is hydroxyl, a sulfonic acid group, a phosphonic acid group, carboxylic acid group, NHR.sup.1, epoxy, or Si(Y).sub.x(Z).sub.3-x. Y is alkyl, aryl, arylalkylenyl, or alkylarylenyl. Z is halide, hydroxyl, alkoxy, aryloxy, acyloxy, polyalkyleneoxy, O covalently bonded to the surface of the filler, or O bonded to another silicon atom, and x is 0 or 1. A composition including the treated filler, a method of making the treated filler, and a method of determining the degree of cure of a curable polymeric resin are also disclosed.

A compound represented by formula (I): and a treated filler having the compound on at least a portion of its surface. R is hydrogen or alkyl. X is alkylene, arylalkylene, or alkylarylene, each optionally interrupted by at least one of an ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, or thiourea, with alkylene optionally interrupted by arylene. W is hydroxyl, a sulfonic acid group, a phosphonic acid group, carboxylic acid group, NHR.sup.1, epoxy, or Si(Y).sub.x(Z).sub.3-x. Y is alkyl, aryl, arylalkylenyl, or alkylarylenyl. Z is halide, hydroxyl, alkoxy aryloxy, acyloxy, polyalkyleneoxy, O covalently bonded to the surface of the filler, or O bonded to another silicon atom, and x is 0 or 1. A composition including the treated filler, a method of making the treated filler, and a method of determining the degree of cure of a curable polymeric resin are also disclosed. ##STR00001##

This invention relates to particles comprising a pigment core particle encapsulated by a polymer, a process for their preparation, electrophoretic fluids comprising such particles, and electrophoretic display devices comprising such fluids.

This application relates to thiophene azo carboxylate dyes for use as hueing agents, laundry care compositions comprising such dyes that may serve as hueing agents, processes for making such dyes and laundry care compositions and methods of using the same. The aforementioned dyes contain a formally charged moiety and are generally comprised of at least two components: at least one chromophore component and at least one polymeric component. Suitable chromophore components generally fluoresce blue, red, violet, or purple color when exposed to ultraviolet light, or they may absorb light to reflect these same shades. Such dyes are advantageous in providing a hueing effect, for example, a whitening effect to fabrics, while not building up over time and causing undesirable blue discoloration to the treated fabrics. Such dyes are also generally stable to bleaching agents used in laundry care compositions.