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| Number | Title | Issue Date |
| 7371831 | Azo dyestuffs Compounds of formula (I) wherein all substituents have the meanings as defined in the Specification, their production and their use. ... | 05/13/2008 |
| 7101983 | Azo dyes The present invention relates to novel dyestuffs of formula (I) wherein the substituents have the meanings defined in the claims, the production of such dyestuffs, the use of these dyestuffs and material dyed or ... | 09/05/2006 |
| 6451988 | Naphthol derivatives Novel naphthol derivatives, and various azo compounds and metal complexes prepared by using the derivatives are provided. The instant invention provides naphthol derivatives represented by general formula (1); ##STR1## wherein at least one of Y1 | 09/17/2002 |
| 6140477 | Near-infrared ray absorbing polyazo compound A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one --OH group or at least one group derived from --OH group at p-position of the azo ... | 10/31/2000 |
| 6068687 | Azo dyes and their preparation and use Azo dyes of formula (4) ##STR1## wherein A, R4, M and m are as defined in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and especially for the preparation of inks for ink jet printing.... | 05/30/2000 |
| 6013775 | Polyazo dyes containing a plurality of hydroxy sulfonyl groups Polyazo dyes of the formula I ##STR1## where one of the two radicals X1 and X2 is hydroxyl and the other is amino, p and q are each independently of the other 0 or 1, D1 and D2 are each independently of the othe... | 01/11/2000 |
| 6011141 | Acid polyazo dyes Polyazo dyes of the formula ##STR1## where n, Y1, Y2, Y3, Y4, X, R1, R2 and R3 are each as defined in more detail in the description are useful for dyeing natural or synthet... | 01/04/2000 |
| 5844100 | Ink compositions containing azo dyes for ink jet printing There is described novel azo dyes of formula (4) with high water solubility for use in aqueous inks, particularly for ink jet recording, which provide images having high water, smudge and light resistance ##STR1## wherein n, m are each independently ... | 12/01/1998 |
| 5786459 | Tetrazo dyestuffs Compounds of the formula (I) ##STR1## have been found which are suitable for dyeing and printing hydroxyl- and/or amido-containing substrates, in particular for printing paper by the ink-jet method.... | 07/28/1998 |
| 5773593 | B15-A20 dyes and inks based thereon A bisazo compound of the Formula (1) and salts thereof: ##STR1## wherein Ar1, Ar2, each J, each X, L, R1 and R2 are as defined in the description, provided that L comprises the residue ##STR2## and/or ... | 06/30/1998 |
| 5756692 | Chemical compounds A bisazo compound of the Formula (1) and salts thereof: ##STR1## wherein the variables are as defined in the specification, the compounds of Formula (1) being free from fibre-reactive groups and any carboxyl substituents present in the compounds bein... | 05/26/1998 |
| 5721344 | Ink compositions containing azo dyes for ink jet printing There is described novel azo dyes of formula (4) with high water solubility for use in aqueous inks, particularly for ink jet recording, which provide images having high water, smudge and light resistance ##STR1## wherein n, m are each independently ... | 02/24/1998 |
| 5646257 | Azodyestuffs, their preparation and their use The new dyestuffs of the formula (I) ##STR1## wherein the substituents R and R1 and the index n have the meaning given in the description, are outstandingly suitable for dyeing and printing cellulose-containing materials, in particular for... | 07/08/1997 |
| 5639864 | Azo dyes, containing a triazine middle component and a monoazo and a disazo dye radical Azo dyes of formula ##STR1## wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1 -C4 alkyl, R3, R4, R5, R6 and R7 | 06/17/1997 |
| 5637679 | Azo dyestuffs for dyeing and printing cellulose-containing fiber materials in an ink jet process New azo dyestuffs of the formula (I) ##STR1## wherein n in each case independently of one another represents 0 or 1, a, b and c independently of one another denote 1 or 2, a+c | 06/10/1997 |
| 5631352 | Azodyes containing a bridge member based on diamino-substituted triazines Dye mixtures which comprise at least one anionic acid dye of the formula ##STR1## together with at least one anionic acid dye of the formula ##STR2## in which the substituents are as defined in claim 1, and the novel dyes of the formulae (1) and... | 05/20/1997 |
| 5536818 | Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition A dichroic dye represented by the formula (I) or (II): ##STR1## wherein the substituents are as described in the specification. The dichroic dyes (I) and (II) exhibit excellent dichroism and can be prepared from 2,2'-ditrifluoromethylbenzidine having... | 07/16/1996 |
| 5493011 | Monoazo or disazo pigments based on (benoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides Water-insoluble azo colorants, their preparation and use The invention relates to monoazo and disazo compounds of the formula (I) ##STR1## in which D is the radical of a carbocyclic or heterocyclic diazo or bisdiazo component, R1 and R | 02/20/1996 |
| 5489671 | Trisazo compound imparting black color, method for dyeing by using it and ink containing it A trisazo compound represented by the following formula (1) in the free acid form: ##STR1## wherein Q' is phenylene group, Q2 is phenyl or naphtyl group, one of the A and B is a hydroxy group and the other is an amino group, K is 1 or ... | 02/06/1996 |
| 5484899 | Fiber-reactive triazinyl dyes having a monoazo moiety with a 2,4-diaminobenzene sulfonic acid coupling component and a second chromophore The invention relates to compounds of the formula ##STR1## in which the variables are as defined in the claims. The compounds are suitable as dyes, in particular for dyeing and printing cellulosic fibre materials, and produce dyeings and prints with ... | 01/16/1996 |
| 5466282 | Azo dye compound, ink containing the same, and recording method and instrument using the ink Disclosed herein is a monoazo dye compound having a structural unit represented by the following formula in its molecule: --X--Y--(R1)(R2)(R3)k [I] wherein Y is a 6-membered ring containing 2 or 3 nitroge... | 11/14/1995 |
| 5328995 | Azo dyes containing triazine middle components and a 1,4-phenylene-2,5-disubstituted coupling component The compounds of the formula ##STR1## where the substituents are as defined in claim 1, are direct dyes for various substrates, in particular cellulosic fibre materials. They are high temperature resistant and therefore are particularly highly suitab... | 07/12/1994 |
| 5225545 | Disazo dyes containing a 1-hydroxy-3-sulfo-acylaminophenyl-amino-naphthalene coupling component The compounds of the formula (1) indicated in claim 1 are suitable for use as direct dyes for dyeing and printing a wide range of materials, in particular cellulose-containing fibre materials, producing dyeings and prints having good fastness properties.... | 07/06/1993 |
| 5183501 | Ink compositions for ink jet recording An ink composition for ink jet recording, which contains a water-soluble dye, an organic solvent and water, in which the dye is represented by the formula (1) as shown in the state of free acid: D--(SO2 CH2 CH2 SO3 H... | 02/02/1993 |
| 5178671 | Ink, and ink-jet recording method and apparatus employing the ink Provided is an ink comprising a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## where R1 is a radical selected from the group of lo... | 01/12/1993 |
| 4997919 | Azo direct dyes containing a non-reactive triazinyl moiety This invention relates to direct dyes for various substrates, in particular cellulosic fiber materials. The inventive dyes are high-temperature-resistant and highly suitable for the single bath, one step dyeing of polyester/cotton mixed fabrics with a dis... | 03/05/1991 |
| 4990421 | Electrophotographic recording material containing a trisazo dye An electrophotographic recording material comprising a conductive support and a photosensitive layer containing a photoconductive compound that has p-type charge generating capacity and is a trisazo compound which is the reaction product of the coupling r... | 02/05/1991 |
| 4988593 | Azo compound containing electrophotographic photosensitive member An electrophotographic photosensitive member having a photosensitive layer is formed on a support and contains an azo pigment expressed by a general formula [I] or [II]: ##STR1## where A, B1 and B2 are aromatic hydrocarbon nucle... | 01/29/1991 |
| 4917981 | Photosensitive member for electrophotography A photosensitive member for electrophotography which comprises a photosensitive layer containing at least one member of the group consisting of thiophene structure-containing azo compounds having one of the general formulae (I) to (X): ##STR1## ... | 04/17/1990 |
| 4799960 | Ink comprising water soluble triazine dye free from cellulose reactive groups A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R1 is --(Ca H2a O)m (Cb H2b O) n H, R2 is H or --(Ca H2a | 01/24/1989 |
| 4780532 | Water-soluble triazine dyestuffs free from cellulose reactive groups and suitable for use in inks A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R1 is --(Ca H2a O)m (Cb H2b O)n H, R2 is H or --(Ca H2a | 10/25/1988 |
| 4746733 | Water-soluble triphendioxazine disazo dyes A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R1 is --(Ca H2a O)m (Cb H2b O)n H; R2 is H or --(Ca H2a | 05/24/1988 |
| 4734218 | Dichroic azo dyestuffs and liquid crystal composition containing said dyestuffs Provided are novel dichroic azo dyestuffs, which contain skeletons represented by the following general formula: ##STR1## at one terminals of the long axes of the molecules of the azo dyestuffs, and liquid crystal compositions containing the dichroic... | 03/29/1988 |
| 4705528 | Water-soluble triazine black dyes from cellulose reactive groups and suitable for use in inks A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R1 is --(Ca H2a O)m (Cb H2b O)n H, R2 is H or --(Ca H2a | 11/10/1987 |
| 4703113 | Water-soluble triazine black dyes free from cellulose reactive groups and suitable for use in inks A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R1 is --(Ca H2a O)m (Cb H2b O)n H, R2 is H or --(Ca H2a | 10/27/1987 |
| 4670547 | Tetrakisazo compounds having two 1-hydroxy-3- or 4-sulfo-6- or 7-amino- or substituted amino-naphthalene coupling component radicals the amino or substituted amino groups of which are linked 1,3,5-triazine rings Tetrakisazo compounds of the formula ##STR1## and salts thereof, wherein B is ##STR2## wherein B1 is a bridging radical as defined in the specification, R7 is hydrogen or C1-4 alkyl, R8 is hydrogen or C | 06/02/1987 |
| 4667019 | Azo dyes containing a triazolyl group for use in liquid crystalline materials Compounds of the general formula I ##STR1## where n is 0, 1 or 2, R1 and R2 are each hydrogen, unsubstituted or substituted alkyl, cycloalkyl, aralkyl, aryl, acyl, alkoxycarbonyl or aryloxycarbonyl, or together form alkylene or ... | 05/19/1987 |
| 4619881 | Photoconductive composition and electro-photographic light-sensitive material containing a trisazo compound A photoconductive composition is disclosed, containing at least one trisazo compound represented by the following general formula (1): ##STR1## wherein Z represents ##STR2## R6 represents a hydrogen atom, a lower alkyl group, an aryl ... | 10/28/1986 |
| 4594410 | Azo compounds containing both sulfo groups and basic or cationic groups which compounds are in metal-free or 1:1 metal complex form Azo dyes of the formula ##STR1## and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form, each X is in... | 06/10/1986 |
| 4492653 | Water-soluble trisazo dyestuffs on the basis of a combination of naphthalene-, diphenylamine- and pyrazolone derivatives Water soluble trisazo dyestuffs of the formula ##STR1## in which A is 1-amino-8-naphthol-3,6-disulfonic acid or 1-amino-8-naphthol-4,6-disulfonic acid, or a mixture of these two compounds, and B is 1-(3'- or 4'-aminophenyl)-3-methyl-5-pyrazolone, a ... | 01/08/1985 |
