Abstract: Disclosed are compounds of formula (1) or formula (2). The compounds are useful for the dyeing of organic materials, such as keratin fibers, wool, leather, silk, cellulose or polyamides, especially keratin-containing fibers, cotton or nylon, and preferably hair, more preferably human hair. (1) (2).

Abstract: The present specification provides for an agent for coloring keratinic fibers. The agent includes, a cosmetic carrier, a compound of formula (I), R1 and R2 independently of one another denote hydrogen, a C1-C6 alkyl group, a C2-C6 alkenyl group, a hydroxyl group, a halogen, a C1-C6 alkoxy group, an amino group, a nitro group, an acetyl amino group, or a sulfonamide group; or when in ortho-position to one another, form a 5- or 6-membered, saturated or unsaturated ring, which optionally include further heteroatoms.

Abstract: The invention relates to agents for coloring keratinic fibers, in particular human hair, including in a cosmetic carrier at least one compound of the formula (I). The structures the of the general formula (I) have a heterocycle A which bears a quaternary nitrogen atom and thus a positive charge. The invention furthermore relates to the use of these novel azo dyes in agents for coloring hair and to the dyes themselves.

Abstract: A hair colorant composition comprises 2,6-diaminopyridine coupler in combination with 2-methoxymethyl-1,4-diaminobenzene developer. A kit for coloring hair comprises the hair colorant composition. A method of treating hair comprises applying the hair colorant composition to hair.

Abstract: The invention relates to a dyeing composition comprising a fluorescent disulphide dye and to a method of dyeing keratin materials, with a lightening effect, that employs said composition. It likewise relates to new fluorescent disulphide dyes and to their uses in the lightening of keratin materials. This composition allows a particularly persistent lightening effect to be obtained.

Abstract: There is provided an aqueous solution containing (a) a preservative and (b) at least one azo compound represented by the following Formula (1) or a salt thereof, in which the content of (b) is 1% by mass to 25% by mass. (In Formula (1), G represents a nitrogen atom or —C(R2)?. R2 represents a hydrogen atom, a sulfo group, a carboxyl group, a substituted or unsubstituted carbamoyl group or a cyano group. X1, X2, X3, X4, X5, X6 and X7 each independently represents a hydrogen atom or a monovalent substituent. Y2, Y3 and Y4 each independently represents a hydrogen atom or a monovalent substituent. Y2, Y3 and Y4 may be bonded with each other to form a ring. All of Y2, Y3 and Y4 do not represent hydrogen atoms at the same time. M each independently represents a hydrogen atom or a monovalent countercation.

Abstract: There is provided an aqueous solution including: (a) a preservative, and (b) at least one kind of an azo compound represented by the following Formula (1) or a salt thereof, wherein a content of (b) is 1% by mass to 25% by mass: wherein, in Formula (1), A represents a substituted phenyl group or a substituted or unsubstituted nitrogen-containing 5-membered heterocyclic group, G represents a nitrogen atom or —C(R2)?, R2 represents a hydrogen atom, a sulfo group, a carboxy group, a substituted or unsubstituted carbamoyl group or cyano group, Y2, Y3 and Y4 each independently represents a hydrogen atom or a monovalent substituent, Y2, Y3 and Y4 may be bonded to each other to form a ring, all of Y2, Y3 and Y4 do not represent a hydrogen atom at the same time, and M each independently represents a hydrogen atom or a monovalent countercation.

Abstract: The present invention relates to a cationic aminopyridine of general formula (I), acid-addition salts thereof and solvates thereof: in which: R1 is a linear or branched, saturated C1-C20 alkyl radical, substituted and/or interrupted with a cationic radical. The present invention is also directed towards a process for synthesizing this cationic aminopyridine, compositions, uses, hair dyeing processes and devices using this cationic aminopyridine.

Abstract: A composition for the oxidative dyeing of keratin fibers, in particular human keratin fibers, comprising (A) a 1-hexyl/heptyl-4,5-diaminopyrazole compound of the general formula (I), its physiologically compatible water-soluble salt, or mixtures thereof; (B) a pyridine compound of the general formula (II), its physiologically compatible water-soluble salt, or mixtures thereof; and (C) an oxidizing agent. wherein R1, R2, R3, R4, R5, R6, R7 and R8 are as defined herein and a=1 or 2.

Abstract: The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.

Abstract: Provided are a method of stabilizing a leuco dye storable as a liquid for a long time, a method of reducing nonspecific color development thereof at a time of a color development reaction, and a stable liquid reagent composition using the methods. The inventors of the present invention found that coexistence of the leuco dye with a specific reducing agent resulted in suppression of self color development and its remarkably improved stability in a solution, and that when a color development reaction of the leuco dye with hydrogen peroxide was performed, coexistence of the leuco dye, in a reaction solution, with another dye which had an absorption spectrum not influencing a measurement wavelength of the leuco dye and did not react with hydrogen peroxide suppressed nonspecific color development and lowered a reagent blank value, which was applied to an analytical reagent.

Abstract: The invention relates to hair dyeing composition comprising (a) a dye of formula (1); (b) ant least one dye selected from the compounds of formulae (2); (3) and (4); wherein D is the radical of a diazo component of the formula (2a); (2b); (2c); (2d); (2f); (2g) or (2h). The invention also relates to the dyeing methods for dyeing keratinous fibers comprising such dyeing composition.

Abstract: Use of a composition comprising hydrogen peroxide in a cosmetic vehicle allows gentle discoloring of permanently colored, keratinous fibers which have been colored with a specific coloring composition. The coloring composition used for coloring the fibers comprises, in a cosmetic vehicle, a combination of at least one CH-acidic compound with at least one reactive carbonyl compound. The discoloring composition contains preferably between 0% and 15% by weight of hydrogen peroxide and has the effect, in particular in a working time of 5 to 20 minutes even without the use of organic peroxo compounds and in the absence of inorganic persalts, of effective color removal with simultaneous gentle treatment of the fibers.

Abstract: The invention relates to hair dyeing composition comprising (a) a dye of formula (1); (b) a least one dye selected from the compounds of formulae (2) and (3), wherein D is the radical of a diazo component of the formula (2a) and (c) a quaternary ammonium salt selected from (c1) quaternary ammonium salts of the formula (4); (c2) imidazolium salts of the formula (5) and (c3) quaternary diammonium salts of the formula (6). The invention also relates to the dyeing methods for dyeing keratinous fibers comprising such dyeing composition.

Abstract: A reversible thermochromic system comprising a) a compound of the formula (I) or a tautomer thereof (I) wherein R1 is C1-C18alkyl, C2-C18alkenyl, C3-C12cycloalkyl, C3-C12cycloalkyl substituted by 1, 2 or 3 C1-C4alkyl; or C7-C12phenylalkyl; R2 and R3 are hydrogen or R2 and R3 together form a group —CH?CH—CH?CH—; and R4 is hydrogen, —NO2, —SO2—R1 or (4-nitrophenyl)azo; and b) a compound containing a group of the formula (II).

Abstract: The invention relates to the dyeing of keratin fibers using azomethine direct dyes or reduced precursors of azomethine direct dyes of formula (I) and (II) obtained from 2-amino-3-hydroxypyridine. The invention relates to a dye composition comprising at least one azomethine direct dye or a reduced precursor of an azomethine direct dye, to a process for dyeing keratin fibers, using the said composition, and to their uses in the dyeing of keratin fibers. This composition allows a particularly stable and fast coloration to be obtained.

Abstract: Disclosed herein are compositions for simultaneous shaping, dyeing, and/or lightening of keratin fibers comprising at least one disulfide direct dye and at least one organic or mineral hydroxide alkaline agent. Also disclosed herein are processes for simultaneous shaping, dyeing, and/or lightening of keratin fibers using said compositions and compartmentalized devices comprising said compositions. The compositions disclosed herein may make it possible to obtain a long-lasting dyeing effect, while limiting the degradation of the keratin fibers.

Abstract: The invention relates to a dye composition comprising a thiol/disulfide fluorescent dye comprising a heterocycle, and to a dyeing process which has a lightening effect on keratin materials, in particular keratin fibers, especially human keratin fibers such as the hair, using said composition. It similarly relates to novel thiol/disulfide fluorescent dyes and to uses thereof in lightening keratin materials. This composition makes it possible to obtain a particularly resistant and visible lightening effect on dark keratin fibers.

Abstract: The invention relates to a dye composition comprising a thiol/disulfide fluorescent dye comprising amino groups, and to a dyeing process which has a lightening effect on keratin materials, in particular keratin fibers, especially human keratin fibers such as the hair, using said composition. It similarly relates to novel thiol/disulfide fluorescent dyes and to uses thereof in lightening keratin materials. This composition makes it possible to obtain a particularly resistant and visible lightening effect on dark keratin fibers.

Abstract: The present invention relates to the dyeing of keratin materials using two colorless dye precursors, at least one of which contains a disulfide/thiol unit, said precursors reacting together chemically to form the color in situ. The process according to the invention makes it possible in the context of certain variants to solve the problems caused by the color generated during the process, while at the same time not degrading the efficacy of the coloration, and especially of the lightening effect. The colorations obtained are moreover powerful, chromatic, sparingly selective, and fast with respect to external agents such as sunlight, perspiration and especially shampoo.

Abstract: Agent for dyeing keratin fibers while simultaneously bleaching the keratin fibers. The agent contains, in a cosmetic carrier, at least one oxidation dye precursor and at least one cationic acylpyridinium derivative.

Abstract: The present disclosure relates to monocationic monochromophoric compounds of formula (I) and (II) and dyeing compositions and multicompartment devices comprising monocationic monochromophoric compounds of formula (I) and (II). The disclosure also relates to methods for preparing monocationic monochromophoric compounds of formula (I) and (II), and also to methods for dyeing comprising applying monocationic monochromophoric compounds of formula (I) and (II) to keratin fibers.

Abstract: The present invention relates to thiol/disulphide azo quinolinium compounds for dyeing keratin fibres. The invention relates to a dye composition comprising a particular thiol/disulphide azo quinolinium chromophore-containing thiol or disulphide dye, and to a process for dyeing keratin fibres such as the hair, using said composition. It similarly relates to novel particular thiol/disulphide azo quinolinium chromophore-containing dyes and to the uses thereof in dyeing keratin fibres. The dyeing process according to the invention makes it possible to dye keratin fibres without damaging them, in a manner which is particularly persistent with respect to shampooing operations and common attacks. Moreover, the novel dyes according to the invention extend the colour range to violets and blues. This process also makes it possible to dye bleached keratin fibres in a strong and chromatic manner.

Abstract: The present invention relates to a hair dye composition containing a dissociative azo dye which has high dyeing power, is capable of imparting a vivid color to the hair firmly, has excellent fastness to light, shampooing, sweat, friction, and heat, and fades less with the passage of time because the dye is stable against an alkali agent or an oxidizing agent and does not decompose during hair dyeing; and a hair dyeing method using the hair dye composition.

Abstract: Disclosed herein is a composition for the dyeing of keratin fibers, for example, human keratin fibers such as the hair, comprising at least one 3-amino pyrazolo-[1,5-a]-pyridine derivative or one of its addition salts and a method employing this derivative. The composition of the present disclosure makes it possible to obtain coloration in various shades that is powerful, chromatic, and aesthetic, with low selectivity and with good resistance to various aggressive factors to which the hair may be subjected, such as shampoos, the light, sweat and permanent shaping.

Abstract: Disclosed are mixtures of sulfide dyes and dyeing compositions comprising mixtures of sulfide dyes. The dye mixtures are useful for the dyeing of organic materials, such as keratin fibers, preferably human hair.

Abstract: Disclosed are composition and method for dyeing keratin-containing fibers comprising or utilizing styryl sulfide dyes of formula (1), their salts, isomers, hydrates and other solvates, wherein R1, R?1, R2, R?2, R3, R?3, W1, W?1, W2, W?2, W3, W?3, W4, W?4, Q, Q?, Y1 and Y2 are defined in claims and disclosure.

Abstract: Disclosed are thiol dyes of formula (1) wherein L1 is hydrogen; C1-C12alkyl; or phenyl-C1-C4alkyl; X is C1-C12alkylene, C2-C12alkenylene, C5-C10cycloalkylene, C5-C10arylene, or C5-C10arylene-C1-C10alkylene, which may by interrupted by —O—, —NH—, —S—, —CO—, o-SO2—; Y is the residue of an organic dye Z is a group of formula (1b) or —C?N; wherein A is O; S; or N-L2; B is L3; —OL3; —NL3L4; or —SL3; and L2, L3 and L4, independently from other are hydrogen; C1-C12alkyl; C5-C12aryl-C1-C12alkyl. The compounds are useful for the dyeing of organic materials, such as keratin fibers, preferably human hair.

Abstract: Provided is a hair dye comprising 0.1 to 3.0% by weight of at least one of aqueous acid dyes and a resin comprising a terpolymer constituted from a vinyl cyclic amide, an acrylic acid derivative and a quaternary derivative of acrylic acid, wherein a content of the resin is 0.1 to 2.5% by weight in terms of a solid content; and the hair dye further comprises 1.0 to 20% by weight of a hair dyeing auxiliary agent, 20 to 60% by weight of a lower alcohol and 20 to 60% by weight of water and has a pH of 2 to 4.

Abstract: Disclosed are tricationic dye compounds, useful for dyeing hair, wool, leather, silk, cellulose or polyamides. The dye compounds are of formula (1), where the groups are as defined in the specification and claims.

Abstract: The invention relates to the dyeing of keratin materials using naphthylimide thiol/disulphide thiol fluorescent dyes, and to a dyeing process which has a lightening effect on keratin materials, in particular keratin fibres, especially human keratin fibres such as the hair, using said composition. It similarly relates to novel thiol/disulphide fluorescent dyes and to uses thereof in lightening keratin materials. This composition makes it possible to obtain a particularly resistant and visible lightening effect on dark keratin fibres.

Abstract: A composition comprising a compound of Formula (1) or a salt thereof and compound of Formula (2) or a salt thereof: wherein: A is or comprises an aryl or heteroaryl group; Q1 and Q2 each independently is an optionally substituted phenylene group; R1, R2, Ra and Rb each independently is H, optionally substituted alkyl, optionally substituted aryl or optionally substituted arylalkyl; each W1, W2, W3 and W4 independently is a —CO2H, —SO3H, —PO3H2 group or an alkyl substituted with one or more groups selected from —CO2H, —SO3H, —PO3H2; each S1, S2, S3 and S4 independently is a substituent other than those defined for W1, W2, W3 and W4; a and d each independently is from 1 to 5; b and c each independently is from 0 to 4; (a+b) has a value of from 1 to 5; (c+d) has a value of from 1 to 5; e and h each independently is from 1 to 7; f and g each independently is from 0 to 6; (e+f) has a value of from 1 to 7; and (g+h) has a value of from 1 to 7.

Abstract: The present disclosure relates to the dyeing of keratin materials using thiol/disulfide styryl tetrahydroquinolinium fluorescent dyes. Disclosed herein is a dye composition comprising a thiol/disulfide styryl tetrahydroquinolinium fluorescent dye and a dyeing process with, for instance, a lightening effect on keratin materials such as hair, using said composition. Disclosed herein are thiol fluorescent dyes and the uses thereof in lightening keratin materials. This composition can be used to obtain a lightening effect which can be resistant and visible on dark keratin fibers.

Abstract: The disclosure relates to the dyeing of keratin materials using indole-derived styryl dyes comprising an alkylene linker. Disclosed herein is a dye composition comprising an indole-derived styryl dye comprising an alkylene linker, and a dyeing process with, for example, a lightening effect on keratin materials such as hair, using said composition. Disclosed herein are novel indole-derived styryl dyes comprising an alkylene linker and the uses thereof in lightening keratin materials. This composition makes it possible to obtain a coloring with a lightening effect which can be resistant and visible on dark keratin fibers.

Abstract: Provided is a hair dyeing composition, containing a first part containing (a) a nitrogen-containing compound expressed by the general formula (1) or a salt thereof and a second part containing a component (b) of an oxidizing agent, wherein a pH upon use is 7.5 to 12, wherein R1 and R3 to R5 represent H, a hydroxy group, and an alkyl group with C12 or less optionally having a substituent, R2 represents a hydroxy group, —R or —OR, in which R means the same as R3 to R5, and two or more of R1 to R5 may be taken together to form a 3 to 8 membered-ring optionally having a substituent.

Abstract: An adjuvant composition comprising (A) a C1-C2carboxylic acid ester of a polyhydroxy compound containing from 2 to 20 hydroxyl groups and (B) an N-heterocyclic compound having a pKa, value of from 6 to 8 is storage-stable and suitable as an acid donor in the dyeing of polyamides.

Abstract: The disclosure relates to the dyeing of keratin materials using styryl hydroxy(cyclo)alkylamino thiol/disulfide fluorescent dyes. Disclosed herein is a dye composition comprising a styryl hydroxy(cyclo)alkylamino thiol/disulfide fluorescent dye and a dyeing process with, for example, a lightening effect on keratin materials such as hair, using said composition. Disclosed herein are novel thiol/disulfide fluorescent dyes and the uses thereof in lightening keratin materials. This composition makes it possible to obtain a lightening effect which can be resistant and visible on dark keratin fibers.

Abstract: Compositions for dyeing keratin fibers comprise (a) at least one keratin dyeing compound selected from aromatic systems which comprise at least one boronic acid or boronic ester moiety and which are capable of forming upon oxidation a nucleophile or an electrophile, (b) at least one additional keratin dyeing compound selected from the group consisting of auxiliary developers and auxiliary couplers, and (c) a cosmetically suitable medium. Methods for oxidatively dyeing keratin fibers comprise the steps of applying such compositions in the presence of an oxidizing agent and rinsing the hair. A hair coloring product in kit form comprises a first separately packaged container comprising a composition as described above and a second separately packaged container comprising an oxidizing agent.

Abstract: The present invention relates to agents for coloring keratin fibers which comprise at least one cationic azodye of the general formula (I).

Abstract: Disclosed herein is the use, in the coloring of keratinous fibers, for example human keratinous fibers, such as the hair, of a composition comprising at least one compound chosen from the compounds of formula (I) comprising a cyclic group G including a ring H capable of opening, the dyes corresponding to the compounds of formula (I) wherein the ring H is open and the addition salts thereof: and a method for treating keratinous fibers employing this composition.

Abstract: A hair dye composition containing an azo dye (1) or a salt thereof, (wherein R1 to R4 represents H, aliphatic hydrocarbon group, aryl group, halogen atom, acyl group, cyano group, acylamino group, or the like, wherein R1 and R2, and/or R3 and R4 may be coupled to form a 5- or 6-membered ring; X represents C or N, with the proviso that when X represents C, n stands for 1, and when X represents N, n stands for 0; A1, A2, A3 and A4 each represents N or represents C substituted by Y or having H, with the proviso that at least one of A1, A2, A3 and A4 is a nitrogen atom; and Y represents a substituent with the proviso that m stands for an integer from 0 to 3).

Abstract: Disclosed herein are methods for coloring keratinous fibers comprising applying to the fibers a dyeing composition comprising at least one aminopyrazolopyridine base, said coloring method being performed without the addition of chemical oxidizing agents.

Abstract: Disclosed herein is the use, in the coloring of keratinous fibers, such as human keratinous fibers, such as the hair, of a composition comprising at least one compound chosen from the compounds of formula (I) comprising a cyclic group G including a ring H capable of opening, the dyes corresponding to the compounds of formula (I) wherein the ring H is open, and the addition salts thereof: and a method for treating keratinous fibers employing this composition.

Abstract: Disclosed herein is a composition for the dyeing of keratin fibers, for example, human keratin fibers such as the hair, comprising at least one 3-amino pyrazolo-[1,5-a]-pyridine derivative or one of its addition salts and a method employing this derivative. The composition of the present disclosure makes it possible to obtain coloration in various shades that is powerful, chromatic, and aesthetic, with low selectivity and with good resistance to various aggressive factors to which the hair may be subjected, such as shampoos, the light, sweat and permanent shaping.

Abstract: The present invention relates to the use, for the dyeing with lightening effect of human keratin substances, and in particular of human keratin fibres such as the hair, of a composition comprising at least one fluorescent cyanine dye. The present invention allows human keratin substances to be both dyed and at the same time lightened without detriment to said substances. The fluorescent dyes employed in the context of the invention also have high tinctorial affinity for keratin substances and good properties of resistance towards external agents, and especially towards shampoos.

Abstract: The present invention relates to compositions for dyeing keratin fibers, and in particular human keratin fibers such as the hair, comprising at least one compound of styryl or imine type containing a heterocycle and at least one thiol compound. The present invention makes it possible in particular to obtain a chromatic and fast coloration of keratin fibers, especially with respect to shampooing. Moreover, the color obtained is visible even on dark hair without necessarily using an oxidizing composition. The invention also makes it possible to obtain a coloration which, under certain conditions, does not stain.

Abstract: The present disclosure relates to a composition for coloring keratin fibers which comprises, in an appropriate dyeing medium, at least one compound chosen from leuco compounds of formula (I), azomethine dyes with a pyrazolinone unit of formula (II), their mesomeric forms, acid addition salts and solvates thereof: and dyeing methods and multicompartment devices for use thereof.

Abstract: The present disclosure relates to a composition for the dyeing of keratin fibers, such as the hair, comprising at least oneoxidation base chosen from cationic 3-amino pyrazolo-[1,5-a]-pyridine derivatives and addition salts thereof, and a method employing this composition. The present disclosure also relates to cationic 3-amino pyrazolo-[1,5-a]-pyridine derivatives and the addition salts thereof.

Abstract: Disclosed herein are compositions for dyeing keratinous fibers comprising, in an appropriate dyeing medium, at least one aminopyrazolopyridine oxidation base chosen from those of formula (I), wherein it is understood that at least one of the groups R?1, and R?2 is chosen from cationic radicals; at least one coupler and at least one C4-C30 polyol. Dyeing methods and multi-compartment devices for use thereof.

Abstract: A method of modulating a stability of a sulfonated dye, particularly its ozonefastness. The method comprises providing a salt of the dye, wherein the salt comprises at least one organic cation selected from the group consisting of: a first organic cation having a positive charge delocalized between a nitrogen atom and at least one other heteroatom; a second organic cation having a positive charge delocalized between a nitrogen atom and at least two other atoms; and a third organic cation of formula (A): wherein: Rp, Rq and Rr are each independently selected from a C1-6 alkyl group; s is 0, 1, 2 or 3; and Ar is a C6-12 aryl group or C3-12 heteroaryl group.