76results about "Nitro/nitroso dyes" patented technology

Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1):wherein R is selected from C1 to C5 alkyl or hydroxyalkyl, a C3 to C6 cyclic ring containing hetero atoms selected from O, S and N atoms, and -CH2-Ar where Ar is an aromatic ring wherein the aromatic ring may be substituted with one or two hydroxy C1 to C3 alkoxy, or amino groups.

Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): wherein R is selected from C1 to C5 alkyl or hydroxyalkyl, a C3 to C6 cyclic ring containing hetero atoms selected from O, S and N atoms, and -CH2-Ar where Ar is an aromatic ring wherein the aromatic ring may be substituted with one or two hydroxy C1 to C3 alkoxy, or amino groups.

Disclosed are: a novel orange-colored disperse dye which has excellent staining properties onto a hydrophobic fiber material, a high light-resistant color-fastness, an excellent sublimation fastness, and a good buildup property, and is useful as a dye for use in an automotive interior sheet; a disperse dye composition for yellow-to-orange, brown, dark blue and black colors which comprises the disperse dye; an ink for ink-jet printing; a staining method or a stained material using the disperse die, the composition or the ink. The orange-colored disperse dye is represented by the formula (1) below and can stain a hydrophobic fiber material (e.g., a polyester) into orange color. [Chemical formula] (1) wherein X1 represents a chlorine or bromine atom; R1 represents a benzoyl group, a cyanoethyl group, a C1-C4 alkyl group, a phenyl group or a phenyl group substituted by at least one C1-C4 alkyl group.

The present invention is concerned with a dye system for application to a substrate, the dye system comprising: (a) at least one dye precursor; (b) an oxidising agent; and (c) a catalyst, wherein the catalyst is a homogeneous catalyst or a heterogeneous catalyst. Preferably, the catalyst comprises at least one metal-containing compound. The invention also envisages a method for the coloration of a substrate, the method comprising treating the substrate with the dye system of the invention. In preferred embodiments of the invention, the substrate comprises human hair, natural or synthetic polymers, or textile fibres. In further preferred embodiments, the at least one dye precursor is an organic precursor, the at least one metal derivative for use as a catalyst comprises at least one inorganic metal compound or at least one metal complex comprising at least one organic ligand, and the oxidising agent is hydrogen peroxide.

By combining a hydrogen peroxide liberating complex with hair coloring dyes, a highly effective hair coloring composition is obtained which comprises a stable dry powder composition which can be stored in a single container. When use is desired, the stable dry powder composition of the present invention is mixed with water, activating the liberation of hydrogen peroxide and allowing the desired hair coloring effect to be achieved. In addition to providing a single stable dry powder formulation, the composition of the present invention is capable of achieving a wide array of shades and coloring effects.

The invention relates to a benzotriazole dye compound which is characterized by being represented by the chemical general formula in the specifications, wherein in the structural formula (I), R represents OH and OCH3. A synthesis method of the compound comprises the following steps of: (1) synthesizing 2-(2-nitro)azobenzene-4-formaldehyde-phenol; (2) synthesizing 2-(2-hydroxyl-5-formaldehyde)-2H-benzotriazole; (3) synthesizing 2-(2-methoxy-5-formaldehyde)-2H-benzotriazole; and (4) synthesizing a benzotriazole derivative. In the invention, benzotriazole is chemically modified, so that the absorption wavelength of benzotriazole is extended to more than 400nm. The benzotriazole can be used as a visible light photosensitizer and a photoinitiator or other assistants to form a photosensitive system to be used for visible light polymerization of an allyl monomer, and can also be used a photocuring material.

A color filter has a filter segment. The filter segment is formed by means of a color composition for color filter. The color composition for color filter includes: a phosphate-ester series pigment dispersant; a pigment derivatives having a certain alkali-base; at least one alkali-base-containing derivatives selected from pigment derivatives, a Anthraquinone derivatives and a triazine derivatives; a pigment carrier; and a pigment.

The present invention is concerned with a dye system for application to a substrate, the dye system comprising: (a) at least one dye precursor; (b) an oxidizing agent; and (c) a catalyst, wherein the catalyst is a homogeneous catalyst or a heterogeneous catalyst. Preferably, the catalyst comprises at least one metal-containing compound. The invention also envisages a method for the coloration of a substrate, the method comprising treating the substrate with the dye system of the invention. In preferred embodiments of the invention, the substrate comprises human hair, natural or synthetic polymers, or textile fibers. In further preferred embodiments, the at least one dye precursor is an organic precursor, the at least one metal derivative for use as a catalyst comprises at least one inorganic metal compound or at least one metal complex comprising at least one organic ligand, and the oxidizing agent is hydrogen peroxide.

A method for synthesizing dyes excitable by a helium-neon laser (excitable at 633 nm) from hololepidines, e.g., 7-halolepidine, which dyes are suitable for detection and enumeration of reticulocytes in human blood samples. In another aspect, the invention provides a method for immunotyping phenocytes. The method is based on the phenomenon that when dyes of certain structure intercalate into DNA or RNA, the intensity of the dye increases. Dyes suitable for this invention can be described as having (a) a first heterocyclic moiety, (b) a second heterocyclic moiety, and (c) a linking group that connects the first and second heterocyclic moieties. Both the first and second heterocyclic moieties must contain at least two rings, preferably fused together. The dye is characterized by conjugation, whereby the first moiety is ethylenically conjugated to the second moiety.

An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.

The present invention relates to a composition for coloring keratin fibers and a method of use thereof. The coloring composition contains at least one phosphate-based tenside of a particular formula, at least one conditioning component, and at least one dye and / or dye precursor.

The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamine compounds, to a composition for dyeing keratin fibers, for instance human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one ortho- and / or meta-substituted N-alkylhydroxylated secondary para-phenylenediamine, to a process for dyeing keratin fibers comprising applying this composition, and also a dyeing “kit.”

The object of the invention are (p-aminohydroxyphenyl)acrylamide derivatives of general formula (I) or the physiologically tolerated, water-soluble salts thereof and oxidative coloring agents for keratin fibers, containing these compounds.

The invention provides application of binary magnesium-aluminum hydrotalcite in absorption treatment of naphthol green B in a water body. A roasted product obtained by roasting the binary magnesium-aluminum hydrotalcite for 4 to 7 hours at a temperature of between 400 and 600 DEG C is used for adsorbing the naphthol green B in the water body, a general formula of the binary magnesium-aluminum hydrotalcite is [Mg<2+>(1-x)Al<3+>x(OH)2](CO2<2->)x / 2.mH2O, wherein in the formula, x is the ratio of the amount of Al<3+> to Mg<2+>+Al<3+> and is more than 0.2 and less than 0.4, and m is the number of crystallization water. The application has the advantages that the roasted product of the binary magnesium-aluminum hydrotalcite is used for adsorbing the naphthol green B in wastewater solution, has high adsorption capacity and quick adsorption rate; and a material after the adsorption is easy to recover and reutilize.

This invention relates to contains protonated nitrone dye composition and its preparation method. In an implementation program, provides a composition. The composition has the structure shown in general formula I: where R1 and R2 in all cases is a independently from 1 to about 10 carbon atoms of the lipid-based, with from about 3 to about 10 carbon ring grease-based, or have from about 3 to about 12 carbon aryl; R3, R4 and R5 in all cases independently hydrogen atoms, with from 1 to about 10 carbon atoms of the lipid-based, with from about 3 to about 10 resin-based carbon ring, or have from about 3 to about 12 carbon aryl; R6 and R7 in all cases independently hydrogen atoms or with from 1 to about 6 carbon resin base; X is hydrogen; and 'n' is from 0 to about 4 integers.

The invention discloses a purification method of an allergenic disperse dye as shown in formula I, which comprises the following steps: dissolving a commodity dye corresponding to formula I in a polar solvent; and purifying a compound I by the preparative high-performance liquid chromatography, wherein the conditions of the preparative high-performance liquid chromatography are as follows: the chromatographic column is an octadecylsilane chemically bonded silica chromatographic column, methanol and water are used as flowing phases for gradient elution, the start gradient for the ratio of the methanol to the water is 65:35 to 75:25, the final gradient for the ratio of the methanol to the water is 95:5, the time for gradient elution is more than 6 minutes, and the flow rate is 5-30 ml / min; the detection wavelength of an ultraviolet detector is 210-420 nm; and R is a hydroxyl group or an amino group. The invention also discloses a product prepared by the method and application of the product as a standard sample for an analysis. By using the purification method, the purity of the obtained product can be up to 99.1-99.5%.

The invention provides a resin composition for laminated material comprising at least 10 wt% of vinyl compound having chemical formula (1), the pre-impregnated product and metal cover laminated material employing the resin.

A composition has a structure as shown in formula I:R1 and R2 are independently at each occurrence an aliphatic radical having from 1 to about 10 carbons, a cycloaliphatic radical having from about 3 to about 10 carbons, or an aromatic radical having from about 3 to about 12 carbons; R3, R4, and R5 are independently at each occurrence a hydrogen atom, an aliphatic radical having from 1 to about 10 carbons, a cycloaliphatic radical having from about 3 to about 10 carbons, or an aromatic radical having from about 3 to about 12 carbons; R6 and R7 are independently at each occurrence a hydrogen atom or an aliphatic radical having from 1 to about 6 carbons; X is a halogen; and “n” is an integer having a value of from 0 to about 4.

The present invention relates to a preparation process of sulfide dyes and its product. It particular, it relates to a preparation process of sulfur black dyes by adopting spray-drying process and its prepared sulfur black product. Said sulfur black product is characterized by that its grain diameter is 150-200 micrometers, specific surface area is 300-360 sq.cm / g, it has the good wettability, flowability and dissolvability.

A compound of formula (I) or (II) or (III):wherein R5, R6, R7, R8′, R8″ and R8″′ are as defined herein. This compound can be used in a composition for the dyeing of fibers.

The present invention concerns a composition for the dyeing keratin fibers especially human hair on the basis of an oxidation dyestuff precursor system reacting with peroxide and comprising additionally anionic direct dyes which provides long-lasting, intensive, vibrant colors. Hair dyeing composition of the present invention comprises at least one oxidation dyestuff precursor reacting with peroxide, optionally at least one coupling agent and at least one acidic direct dye. The compositions of the present invention do not comprise any cationic dyes.

A method for the synthesis of 5-aryl-1,3,3,-trimethyl-2-methylene-indoline derivatives of Formula (I) or its salts of Formula (Ia)wherein 1 mole of a 5-aryl-2,3,3-trimethyl-3H-indole derivative of Formula (VII) is reacted for 1 to 44 hours at a temperature of 20° to 180° C. in an apolar, aprotic or polar, protic or polar aprotic solvent with 1 to 50 moles of a compound of Formula R1-A; new compounds of Formulas (I) / (Ia) and (V), obtainable by this methodas well as an agent containing at least one compound of Formula (I) / (Ia) and a carbonyl / imine compound for dyeing keratinic fibers and a method for temporarily dyeing keratin fibers, for which the keratin fiber is dyed with the aforementioned agent and the dyeing, so obtained, is removed again at any later time by a sulfite preparation.

The invention discloses a preparation method of C.I. pigment yellow 74. The preparation method comprises the following steps of 1, preparation of a diazonium salt solution; 2, preparation of a coupling solution; 3, a coupling reaction; 4, preparation of an auxiliary agent suspension; 5, post-treatment of the pigment. The method has the advantages that the hue and particle uniformity problems of the post-treatment of the pigment are effectively solved, due to the addition of pigment derivatives, the prepared product is higher in color fastness to light and better in fluidity, the hiding power and the coloring intensity are simultaneously improved, the environmental pollution is extremely small in the aspect of sewage discharge, the prepared pigment can be widely used for aqueous systems ofdry paint and external wall coating, and a vacancy that the hiding power is high but the coloring power is low is filled.

Colorant for Keratin Fibers Containing Cationic Indazoline Thiazolazo Dyes of the General formula (I).

The invention discloses a chromic blue azo dye as well as a preparation method and application thereof. The structural formula is as shown in formula (I). The chromic blue azo dye in the invention is applied to polyester fiber dyeing or printing. The chromic blue azo dye is selected from at least one compound of structural general formula (I) to prepare and obtain a disperse dye composition, and the disperse dye composition can be applied to polyester fiber dyeing or printing. During dyeing, the washing fastness, rubbing fastness, perspiration fastness, light fastness and degree of dyeing are excellent, and the disperse dye composition in the invention is high in strength, bright in color and good in dyeing property, particularly has excellent washing fastness, is stable in color and luster, is unlikely to fade and is relatively low in cost.

The invention relates to a P-nitryl diphenylethylene dye sensitizing agent containing bromine as well as synthesis and application thereof, belonging to the field of singlet oxygen sensitizing agents. A compound of the P-nitryl diphenylethylene dye sensitizing agent has a typical chemical structural formula shown in the structural formula, wherein R1, R2, R3, R4 and R5 in a molecular structural formula represent a hydrogen atom substituent group or a bromine atom substituent group, and at least one of the R1, R2, R3, R4 and R5 is the bromine atom substituent group. Benzyl bromine containing the bromine is added into a glass container to react with 3',4'-dyhydroxyl-4-nitryl diphenylethylene under the alkali condition to prepare the P-nitryl diphenylethylene dye containing bromine which can be sensitized under the irradiation of near ultraviolet and visible light to generate singlet oxygen.

An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.