Abstract: A photoresist composition includes a binder resin combined with a black dye, a monomer, a photo-polymerization initiator and a remainder of a solvent.

Abstract: Disclosed is a method for continuously preparing a water-soluble azo dye by coupling a nebulizer with a pipeline. According to the method, the nebulizer is coupled with a pipeline with an interception tower plate, atomized and mixed reaction liquid flow flows through the pipeline with the interception tower plate, and mixing and reacting are further enhanced through turbulent mixing on the tower plate, so that instant separation of reaction heat generated in an atomizing contact reaction from a reactant is achieved, and normal-temperature rapid continuous production of the water-soluble azo dye is achieved. Fog drops which are atomized by using the nebulizer have small particle diameter and large specific surface area, so that a diazo salt and a coupling component are sprayed separately, move face to face and can be fully contacted, and mixing and reacting speeds are increased.

Abstract: Dyes, compositions comprising dyes and methods for using the same are provided.

Abstract: An ink composition containing at least two kinds of water-soluble long-wavelength dyes whose absorption spectrum in an aqueous solvent has a maximum wavelength of 550 nm to 700 nm, in which at least one kind of the water-soluble long-wavelength dyes is a first water-soluble long-wavelength dye of an azo compound represented by the following Formula (1), at least one kind of the water-soluble long-wavelength dyes is a second water-soluble long-wavelength dye that is different from the first water-soluble long-wavelength dye, and the second water-soluble long-wavelength dye is a compound having two to four azo groups conjugated with each other per molecule, an ink for inkjet recording using the ink composition, and an inkjet recording method using the ink for inkjet recording using the ink for inkjet recording.

Abstract: Electrowetting apparatus including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole, wherein the plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.

Abstract: A polarization film, including a polymer resin, and a dichroic dye dispersed in the polymer resin and represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, Ar, R1 to R4 are the same as those defined in the detailed description.

Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.

Abstract: Reactive dyes of formula (1), wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1-C4alkyl, one of the radicals D1 and D2 is a radical of the formula (2), the other one of the radicals D1 and D2 is a radical of the formula (3a), or (3b), wherein (R3)n denotes n identical or different substituents selected from the group C1-C4alkyl, C1-C4alkoxy and sulfo, Z1 is a radical of the formula —SO2—Y (4a), —CONH—(CH2)p—SO2—Y (4b), —NH—CO—CH(Hal)-CH2-Hal (4c), —NH—CO—C(Hal)?CH2 (4d), or (4e), wherein X1 is halogen, T1 independently has the definition of X1, is a non-fibre-reactive substituent or is a fibre-reactive radical of the formula (5a), —NH—(CH2)2-3—SO2—Y (5b), or —NH—(CH2)2-3—O—(CH2)2-3—SO2—Y (5c), R4 is hydrogen or unsubstituted or substituted C1-C4alkyl, (R5)0-2 denotes from 0 to 2 identical or different substituents from the group C1-C4alkyl, C1-C4alkoxy and sulfo, Hal is halogen, Y is vinyl or a —CH2—CH2—U radical and U is a group that is removable under alkaline

Abstract: Dyes, compositions comprising dyes and methods for using the same are provided.

Abstract: The present invention relates to new compounds, which are molecular combinations of a phthalocyanine and a mono-azo dyestuff linked via specific linking groups and to a process for their preparation. Further aspects are shading compositions using these compounds.

Abstract: Reactive dyes of the formula (1) wherein B is an aliphatic bridging member, G is a sulfo naphthalene group or a sulfo benzene group of the formula (2a) or a pyridone radical of the formula (2b), R1, R2, R3 and R4 are each independently of the others hydrogen or unsubstituted or substituted C1-C4alkyl, (R5)h denotes h identical or different substituents selected from the group sulfo, C1-C4alkyl and C1-C4alkoxy, R6 is hydrogen, sulfo, halogen, carboxy, C1-C4alkyl, C1-C4alkoxy or a fiber-reactive group Z1 of the formula —SO2—Y (3a), —NH—CO—(CH2)1—SO2—Y (3b), —CONH—(CH2)m—SO2—Y (3c), —NH—CO—CH(Hal)-CH2-Hal (3d) or —NH—CO—C(Hal)=CH2 (3e), R7 is amino, C1-C4alkyl or a fiber-reactive group Z2 of the formula —NH—(CH2)n—SO2—Y (3a), (R8)j denotes j identical or different substituents selected from the group sulfo, C2-C4alkanoylamino, ureido, C1-C4alkyl and C1-C4alkoxy, R9 is hydrogen, C1-C4alkyl or C1-C4alkoxy, R10 is hydrogen or C1-C4alkyl, R11 is hydrogen, cyano, carbamoyl or sulfomethyl, and R12 is hydrogen, C1-C4al

Abstract: The present invention relates to dyes of the formula (I) in which R1 to R10, D1 and D2 are defined as given in claim 1, a process for preparing them, and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.

Abstract: An azo compound having the following formula (I): A(E)n??(I) wherein A represents a residue of an azo compound, bonded with n pieces of E group through one or more heteroatom being N or O and forming a part of the residue A; E independently represents a hydrogen atom or —C(?O)—O—R1 wherein R1 represents a substituted or an unsubstituted alkyl group having 4 to 10 carbon atoms, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group or an aralkyl group; and n represents an integer of from 1 to 10.

Abstract: A water-soluble azo compound represented by formula (1) or a salt thereof, and an ink composition containing the compound or salt. The ink composition has a chroma saturation and hue suitable for inkjet recording, and enables a material recorded therewith to have high fastness in various fields, in particular high ozone gas resistance, while enabling an image recorded therewith to have excellent storage stability and the like. In formula (1), Q represents a halogen atom; x represents an integer of 2 to 4; and the group A represents an amino group represented by the following formula (101). In formula (101), y represents an integer of 1 to 3.

Abstract: Azo compounds represented by formula (1) (In the formula, R1 represents a lower alkoxy group with a sulfone group. R2-R5 each independently represents a hydrogen atom, lower alkyl group or lower alkoxy group. X is an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group. m represents 1 or 2 and n represents 0 or 1.) and salts thereof.

Abstract: Bis-diazo, triaryl and aryldiazo-N-arylphenazonium quencher moieties, substituted with electron-withdrawing and electron-donating substituents which induce polarity in the delocalized aryl/diazo ring systems, are useful as labels when attached to biomolecules such as polynucleotides, nucleosides, nucleotides and polypeptides. The quencher moieties are non-fluorescent and accept energy transfer from fluorescent reporter labels by any energy-transfer mechanism, such as FRET. Fluorescence quencher compositions are useful in preparing quencher labeled biomolecules for various molecular biology assays based on fluorescence detection.

Abstract: Disclosed are: a yellow dye which has a color phase having a high contrast ratio suitable for inkjet recording, can produce recorded materials having high durability, and can be used for the preparation of an ink composition to provide an ink composition having excellent storage stability; and an ink composition containing the yellow dye. Specifically disclosed are: a water-soluble azo compound represented by formula (1) or a salt thereof; and an ink composition containing the compound or the salt thereof. The ink composition has a color phase and a color saturation suitable for inkjet recording, can produce recorded materials having high durability, particularly high light resistance and ozone gas resistance, and can also produce printed images having excellent storage stability or the like. In the formula, Q represents a halogen atom; R represents a C1-C11 alkylene group; p represents an integer of 2 to 4; and n represents 1 or 2.

Abstract: A water-soluble azo compound represented by formula (1) or a salt thereof, and an ink composition containing the compound or salt. The ink composition has a chroma saturation and hue suitable for inkjet recording, and enables a material recorded therewith to have high fastness in various fields, in particular high ozone gas resistance, while enabling an image recorded therewith to have excellent storage stability and the like. In formula (1), Q represents a halogen atom; x represents an integer of 2 to 4; and the group A represents an amino group represented by the following formula (101). In formula (101), y represents an integer of 1 to 3.

Abstract: The present invention provides an azo pigment comprising a group represented by the general formula (1) below, an electrophotographic photosensitive member comprising an intermediate layer comprising the azo pigment, and a process cartridge and an electrophotographic apparatus that comprise the electrophotographic photosensitive member.

Abstract: Dyes, compositions comprising dyes and methods for using the same are provided.

Abstract: An azo compound having the following formula (I): A(E)n??(I) wherein A represents a residue of an azo compound, bonded with n pieces of E group through one or more heteroatom being N or O and forming a part of the residue A; E independently represents a hydrogen atom or —C(?O)—O—R1 wherein R1 represents a substituted or an unsubstituted alkyl group having 4 to 10 carbon atoms, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group or an aralkyl group; and n represents an integer of from 1 to 10.

Abstract: A method of preparing a pigment includes the steps of: a) providing a mixture including: a pigment selected from the group of pigments including at least 50 wt % of C.I. Pigment Violet 23, C.I. Pigment Red 146, C.I. Pigment Red 176, C.I. Pigment Red 177, C.I. Pigment Violet 19 and C.I. Pigment Orange 13 based on the total weight of the pigment; alkyl nitrile; and at least one acid selected from the group consisting of sulfuric acid and chlorosulfuric acid, with the acid present in the mixture in amount of more than 2 wt % based on the total weight of the pigment; b) heating the mixture for more than 2 hours to a temperature of at least 70° C.; and c) filtering the mixture and washing the filtrand with a washing liquid containing water until the filtrate has a pH between 4 and 7. Pigments obtainable by the method and non aqueous pigment dispersions are also disclosed.

Abstract: Disclosed herein are solubility changeable dye compositions, methods of preparing such compositions and methods of using them. The composition includes a dye component linked via a linker moiety to a stimulus responsive hydrophobic moiety which modulates the solubility of the dye, wherein the hydrophobic moiety is configured to be de-linked from the dye component on exposure to a stimulus and render the dye component more hydrophilic.

Abstract: Reactive dyes of the formula (1) wherein B is an aliphatic bridging member, G is a sulfo naphthalene group or a sulfo benzene group of the formula (2a) or a pyridone radical of the formula (2b), R1, R2, R3 and R4 are each independently of the others hydrogen or unsubstituted or substituted C1-C4alkyl, (R5)h denotes h identical or different substituents selected from the group sulfo, C1-C4alkyl and C1-C4alkoxy, R6 is hydrogen, sulfo, halogen, carboxy, C1-C4alkyl, C1-C4alkoxy or a fibre-reactive group Z1 of the formula —SO2—Y (3a), —NH—CO—(CH2)l—SO2—Y (3b), —CONH—(CH2)m—SO2—Y (3c), —NH—CO—CH(Hal)-CH2-Hal (3d) or —NH—CO—C(Hal)=CH2 (3e), R7 is amino, C1-C4alkyl or a fibre-reactive group Z2 of the formula —NH—(CH2)nSO2—Y (3a), (R8)j denotes j identical or different substituents selected from the group sulfo, C2-C4alkanoylamino, ureido, C1-C4alkyl and C1-C4alkoxy, R9 is hydrogen, C1-C4alkyl or C1-C4alkoxy, R10 is hydrogen or C1-C4alkyl, R11 is hydrogen, cyano, carbamoyl or sulfomethyl, and R12 is hydrogen, C1-C4alk

Abstract: Disclosed is a yellow dye which has a hue with high definition that is suitable for inkjet recording, and which enables a material recorded therewith to have high fastness in various fields. The yellow dye is capable of providing an ink composition that has excellent storage stability. Also disclosed is an ink composition containing the yellow dye. Specifically disclosed are a water-soluble azo compound represented by formula (1) or a salt thereof, and an ink composition containing the compound or salt. The ink composition has a hue and definition suitable for inkjet recording, and enables a material recorded therewith to have high fastness in various fields, while enabling an image recorded therewith to have excellent storage stability and the like. In formula (1), Q represents a halogen atom; W represents a hydrogen atom or a hydroxy group; x represents an integer of 2-4; and y represents an integer of 1-4.

Abstract: The present invention provides a dis-azo compound and an oil ink comprising the same. The Dis-azo compound is represented by the following formula (I): wherein R1 represents substituted or unsubstituted C4˜C16 alkyl, and R2 and R3 independently represent substituted or unsubstituted C1˜C6 alkyl. Besides, the present invention also provides an electrowetting display using the oil ink.

Abstract: The present invention provides a new class of solids supports for synthesis of modified oligomers of nucleic acids, and nucleic acid probes that have a format expediently synthesized on the new supports. Exemplary solid supports include at least one quencher bound through a linker to the solid support. Various exemplary embodiments include a moiety that stabilizes a duplex, triplex or higher order aggregation (e.g., hybridization) of nucleic acids of which the oligomer of the invention is a component. Other components of the solid support include moieties that stabilize aggregations of nucleic acids, e.g., intercalators, minor groove binding moieties, bases modified with a stabilizing moiety (e.g., alkynyl moieties, and fluoroalkyl moieties), and conformational stabilizing moieties, such as those described in commonly owned U.S. Patent Application Publication No. 2007/0059752.

Abstract: Disclosed is a water-soluble azo compound represented by formula (1) or a salt thereof, which functions as a yellow dye having a high print density suitable for inkjet recording. Matter recorded by using the water-soluble azo compound or a salt thereof has high fastness in various fields, and an ink composition prepared by using the water-soluble azo compound or a salt thereof has excellent storage stability. An ink composition containing the water-soluble azo compound or a salt thereof is also disclosed. In formula (1), R represents a hydrogen atom or the like; n represents an integer of 1-3; m represents 1 or 2; x represents an integer of 2-4; and group A represents a carboxy-substituted C1-C20 aliphatic amino group, a sulfo-substituted C1-C3 aliphatic amino group, a substituted or unsubstituted aromatic amino group, a substituted or unsubstituted aryl C1-C4 alkylamino group, or the like.

Abstract: The invention relates to an azo dye of formula (1) The invention also relates to a process for the preparation of the dye of formula (1) and the use of the dye of the formula (1).

Abstract: Azo compounds represented by formula (1) (In the formula, R1 represents a lower alkoxy group with a sulfone group. R2-R5 each independently represents a hydrogen atom, lower alkyl group or lower alkoxy group. X is an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group. m represents 1 or 2 and n represents 0 or 1.) and salts thereof.

Abstract: The present invention relates to a water-soluble azo compound represented by the following formula (1) or a salt thereof: wherein, R represents an alkyl group having 1 to 4 carbon atoms, n represents an integer number of 1 or 2, x represents an integer number of 2 to 4 and y represents an integer number of 2 to 11, respectively and an ink composition containing this; and provides a yellow coloring matter which has a highly vivid hue suitable for inkjet recording, gives various high fastnesses to recorded matter and is excellent in storage stability when prepared as an ink composition, and an ink composition containing this.

Abstract: A process for printing an image on a substrate comprising applying to the substrate an ink comprising a medium and compound of Formula (1) or a salt thereof wherein the compound of Formula (1) or a salt thereof is a triazine coupled azo containing colorant. The process and colorant are especially useful for ink jet printing.

Abstract: Methods and compositions are provided for reducing aggregation of neurodegenerative proteins associated with neurotoxicity or other proteins. The compounds comprise a first domain or targeting element for binding to the target proteins linked to a second domain or recruiting element that binds to an aggregation inhibiting protein, e.g. a prolyl isomerase. By associating the aggregating forming proteins or neuronal cells under conditions where aggregating proteins are produced with the compound and the aggregation inhibiting protein, aggregation is reduced. The subject agents can be used in assays, investigating the etiology of the neuronal diseases and for prophylaxis and therapy.

Abstract: Provided is a water soluble azo compound represented by the following formula (1) or a salt thereof, which serves as a yellow coloring matter having a hue with high brilliance which is suitable for ink jet recording, and which enables a recorded matter to have various superior fastness properties. When an ink composition is prepared using the azo compound or a salt thereof, the ink composition can have superior storage stability. Also provided is an ink composition containing the water soluble azo compound or a salt thereof. In the formula (1), R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms; m represents an integer of 1 to 3; and A represents an amine residue represented by any one of the following formulae (2) to (5). In the formula (2), x represents an integer of 1 to 3. In the formula (3), y represents an integer of 1 to 11.

Abstract: The present invention relates to new compounds, which are molecular combinations of a phthalocyanine and a mono-azo dyestuff linked via specific linking groups and to a process for their preparation. Further aspects are shading compositions using these compounds.

Abstract: A compound of Formula (1) or a salt thereof useful as colorants for use in ink jet printing inks: wherein: A1 is optionally substituted phenyl; A2 is optionally substituted aryl; Q1 and Q2 are each independently an optionally substituted phenylene ring which is para connected to the —N?N— and the —NR— groups shown in Formula (1); and each R independently is H or a substituent; with the provisos that: (i) the compound of Formula (1) has at least one group selected from —SO3H and —PO3H2 groups; (ii) the compound of Formula (1) has more groups selected from —SO3H and —PO3H2 groups than the total number of —CO2H and —COSH groups; and (iii) the compound of Formula (1) is not of Formula (1a):

Abstract: The present invention relates to a water-soluble azo compound or a salt thereof represented by the following formula (1): (wherein, R represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a sulfo group, n, m, x and y represent an integer of 1 or 2, 1 to 3, 2 to 4 and 1 to 3, respectively.) and an ink composition containing the same; the above compound or a salt thereof has a hue possessing a high vividness suitable for inkjet recording, provides various fastnesses to recorded matters, and is useful as a yellow coloring matter excellent in storage stability when prepared into an ink composition, and suitable for ink compositions, especially inks for inkjet recording.

Abstract: A process for printing an image on a substrate comprising applying to the substrate an ink comprising a medium and compound of Formula (1) or a salt thereof wherein the compound of Formula (1) or a salt thereof is a triazine coupled azo containing colorant. The process and colorant are especially useful for ink jet printing.

Abstract: The present invention relates to a water-soluble azo compound for yellow represented by the following formula (1) wherein, A represents a hydroxy group, a morpholino group, an amino group, an aliphatic amine residue which may have a substituent, an aromatic amine residue which may have a substituent, a phenoxy group which may have a substituent, or an alkoxy group which may have a substituent, R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents a hydrogen atom, a nitro group or a hydroxy group, and n represents an integer number of 1 to 3, respectively as a free acid, and an ink composition containing the same; said ink composition has good stability and is suitable for inkjet printing; and printed matters therewith have very high fastness such as ozone fastness and the like.

Abstract: A compound of Formula (1) or a salt thereof: wherein: A1 is optionally substituted phenyl; A2 is optionally substituted aryl; Q1 and Q2 are each independently an optionally substituted phenylene ring which is para connected to the —N?N— and the —NR— groups shown in Formula (1); and each R independently is H or a substituent; with the provisos that: (i) the compound of Formula (1) has at least one group selected from —SO3H and —PO3H2 groups; (ii) the compound of Formula (1) has more groups selected from —SO3H and —PO3H2 groups than the total number of —CO2H and —COSH groups; and (iii) the compound of Formula (1) is not of Formula (1a): The compounds are particularly useful as colorants for use in ink jet printing inks.

Abstract: A process for printing an image on a substrate comprising applying to the substrate by means of an ink jet printer an ink comprising a compound of Formula (1) or salt thereof: Also claimed are compounds, inks, printed substrates and the use of compounds in preparing ink jet printing inks. The compounds provide inks which when printed exhibit good light fastness and ozone fastness.

Abstract: Dye mixtures comprising at least one dye of formula together with at least one dye of formula wherein the radicals indicated in the formulae are defined in accordance with the claims, are suitable for dyeing or printing cellulosic fibre materials with good build-up behaviour and yield dyeings of a deep shade having good fastness properties.

Abstract: A compound of Formula (1) or a salt thereof: wherein: A1 and A2 are each independently optionally substituted aryl; Q1 and Q2 are each independently an optionally substituted arylene or polycyclic heteroarylene group each comprising a phenylene ring which is para connected to the —N?N— and the —NR— groups shown in Formula (1); each R is independently H or a substituent; each X is independently selected from O, S or NRa wherein Ra is H or a substituent, provided that at least one of the groups represent by X is O or S; L is a linking group; and provided that the groups represented by the formula XLX do not contain any group selected from sulfonic acid, phosphonic acid, carboxylic acid and sulfonamide groups. Inks containing these compounds, have particularly good ozone-fastness, optical density, colour space and especially good light-fastness.

Abstract: The present invention relates to a water-soluble azo compound represented by the following formula (1) [KA 1] (wherein, A represents a hydroxyl group, a morpholino group, an amino group, an aliphatic amine residue which may have a substituent, aromatic amine residue which may have a substituent, a phenoxy group which may have a substituent or an alkoxy group which may have a substituent, R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents a substituent selected from a hydrogen atom, a halogen atom, a nitro group and a hydroxyl group, n represents an integer number of 1 to 3, respectively) as free acid and an ink composition comprising the same. Said azo compound has hue having high vividness suitable for inkjet recording, said ink composition is excellent in storage stability, and an inkjet recorded article by using this is excellent in fastnesses such as moisture fastness, ozone gas fastness and light fastness.

Abstract: The present invention relates to a water-soluble azo compound for yellow represented by the following formula (1) (wherein, A represents a hydroxy group, a morpholino group, an amino group, an aliphatic amine residue which may have a substituent, an aromatic amine residue which may have a substituent, a phenoxy group which may have a substituent, or an alkoxy group which may have a substituent, R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents a hydrogen atom, a nitro group or a hydroxy group, and n represents an integer number of 1 to 3, respectively) as a free acid, and an ink composition containing the same; said ink composition has good stability and is suitable for inkjet printing; and printed matters therewith have very high fastnesses such as ozone fastness and the like.

Abstract: A process for printing an image on a substrate comprising applying to the substrate by means of an ink jet printer an ink comprising a compound of Formula (1) or salt thereof: Also claimed are compounds, inks, printed substrates and the use of compounds in preparing ink jet printing inks. The compounds provide inks which when printed exhibit good light fastness and ozone fastness.

Abstract: A compound of Formula (1) or salt thereof: Also, claimed are inks, a process for printing an image on a substrate using the inks and substrates printed with said inks. The compounds of Formula (1) provide colorants especially suitable for ink jet printing having good light and ozone fastness.

Abstract: Methods and compositions are provided for reducing aggregation of neurodegenerative proteins associated with neurotoxicity or other proteins. The compounds comprise a first domain or targeting element for binding to the target proteins linked to a second domain or recruiting element that binds to an aggregation inhibiting protein, e.g. a prolyl isomerase. By associating the aggregating forming proteins or neuronal cells under conditions where aggregating proteins are produced with the compound and the aggregation inhibiting protein, aggregation is reduced. The subject agents can be used in assays, investigating the etiology of the neuronal diseases and for prophylaxis and therapy.

Abstract: The present invention provides a reactive dyestuff with an alkylthio group and a ?-sulfatoethylsulfone group, which is represented by formula (I), wherein D, R, R1, R2, R3, R4, Q, x, and y are defined the same as the specification. The reactive dyestuffs of the present invention not only have characteristics of high solubility, high alkali solubility, and easily being washed off for dyeing cellulose fiber, but also are suitably applied in cold-pad-batch dyeing, continuous-dyeing, printing, and digital printing.

Abstract: The present invention refers to dyestuffs of the formula (I) wherein R1, R2 are independently H, optionally substituted alkyl or optionally substituted aryl, R3 is optionally substituted alkyl or optionally substituted aryl, an organic acyl group (i.e. acetyl, propionyl, benzoyl etc.) or an organic thioacyl group (i.e. 10 thioacetyl, thiopropionyl, thiobenzoyl etc.), all of which may or may not bear a reactive group able to form a dye-fibre bond, R4 is any coloured organic group, which may or may not bear a reactive group able to form a dye-fibre bond, L is any carbon containing linking group that is aliphatic, aromatic, or a combined alkyl-aryl group such as benzyl or phenethyl, X is halogen or tertiary ammonium or an optionally substitute aryl amine, processes for the preparation of said dyestuffs and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.