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| Number | Title | Issue Date |
| 7101405 | Oxidation dyeing composition for karatinous fibers comprising a cationic associative polyurethane The invention concerns an oxidation dyeing composition for keratinous fibers, in particular human keratinous fibers, and more particularly hair, comprising, in a medium suitable for oxidation dyeing, at least an oxidation colouring agent, and furthermore at least a ... | 09/05/2006 |
| 6861106 | Dichroic dye, composition thereof, and liquid crystal composition and liquid crystal display element containing the same Dichroic dyes, dichroic dye compositions, and liquid crystal composition and liquid crystal display element containing the dichroic dyes. The dichroic dye has increased solubility and stability. ... | 03/01/2005 |
| 6743901 | Preparation of liquid formulations of basic azo dyes A process for preparing liquid formulations of dyes of the general formula I where the variables are as defined in the specification by diazotizing an amine of the formula II | 06/01/2004 |
| 6346609 | Cationic azo-dyes Cationic azo dyes of the general formula I ##STR1## where R1, R2, R3, A1, A2, B1, B2, An.crclbar., n and K have the meaning given in the specification are prepared and... | 02/12/2002 |
| 6132894 | 1:2 Iron azo-dyestuff complexes A compound of formula (I) or a mixture thereof ##STR1## The compounds are useful as solvent dyestuffs and exhibit high solubility in alcoholic solvents, e.g. ethanol.... | 10/17/2000 |
| 5962740 | Processes for producing 4,6-bis (substituted)phenylazoresorcinols A process for producing 4,6-bisphenylazoresorcinol of formula 2! wherein R represents halogen atom, C1-5 alkyl group, hydroxycarbonyl or C1-5 alkoxy group, n represents 0 or an integer of 1 to 5, and two or more Rs are the same or ... | 10/05/1999 |
| 5700296 | Azo compound and a polarizing film containing the same An azo compound of the following formulae (I) or (II): ##STR1## wherein Q1 represents a phenyl group or a naphthyl group, Q2 represents a phenyl group; R represents hydroxy group; R1 and R2 each independent... | 12/23/1997 |
| 5668259 | Metallizable disazo compounds having 1, 3-dihydroxybenzene bis-coupling component radicals, iron complexes thereof and mixtures of such iron complexes Compounds of the formula ##STR1## iron complexes thereof and mixtures of such iron complexes, wherein D is a monocyclic or bicyclic aromatic diazo component radical of the benzene series containing one --SO3 M group or is ##STR2## ... | 09/16/1997 |
| 5453542 | Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate The present invention is a method of preparing a 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt and resorcinol in the presence of a base and a reaction medium containing water and a water-miscible solvent at a temperature in the range ... | 09/26/1995 |
| 5319075 | Iron complexes and mixtures of iron complexes of disazo compounds having 1,3-dihydroxybenzene coupling component radicals, their use and metal-free disazo compounds useful as intermediates Mixtures of iron complexes of metallizable disazo compounds, at least one compound being of the formula ##STR1## and at least one compound being of the formula ##STR2## wherein the substituents have the meaning given in the specification, are ... | 06/07/1994 |
| 5312906 | Optical information recording media and bisazo compounds for use therein Bisazo compounds of formula (I), an intermediate for producing the bisazo compound of formula (I), and trisazo compounds of formula (II) for use in optical information recording media, and methods of producing these compounds are disclosed: ##STR1## ... | 05/17/1994 |
| 5270455 | Polyazo dyes containing resorcinol as middle component and metal complexes thereof A metal complex suitable as dyes for the dyeing of a wide range of textile and non-textile materials, particularly leather and fur, said metal complex of a compound of the formula ##STR1## in which D and D1, independently of one another, a... | 12/14/1993 |
| 5162545 | Malonic acid dyes and polycondensation products thereof Malonic acid dyes capable of forming polycondensation products have the formula ##STR1## where R1 and R2 are each independently of the other hydroxyl, C1 -C6 -alkoxy, chlorine or bromine, R3 is h... | 11/10/1992 |
| 5104979 | Polyazo dyes with diazo components of the aminophenol and the amino diphenyl-sulfide, -sulfoxide or -sulfone series Polyazo dyes useful for dyeing leather in the free form or as copper, chromium, iron, cobalt or nickel complexes have the formula ##STR1## where m is 0, 1 or 2, n is 0 or 1, p is from 1 to 2, q is from 0 to 1, and R1, R2, R... | 04/14/1992 |
| 5008379 | Chromium complexes of sulfo group containing disazo compounds having a resorcinol biscoupling component radical Water-soluble, anionic, chromium complexes of disazo compounds, at least one of the complex-forming disazo compounds being of the formula, ##STR1## in which ##STR2## is the radical of a carboxy group-containing diazo component of the benze... | 04/16/1991 |
| 5001226 | Metal-free disazo and polyazo compounds having at least one 6-hydroxypyrid-2-one coupling component radical linked to a 1-amino- or hydroxy-3-amino- or hydroxybenzene coupling component radical and metal complexes thereof Compounds of the formula ##STR1## 1:1 and 1:2 metal complexes thereof, salts of such compounds and metal complexes and mixture thereof, wherein each of B1 and B2 is independently hydroxy or amino, each D is independently ##STR2#... | 03/19/1991 |
| 4923973 | 1:2 Cobalt complexes of disazo dyes 1:2 Cobalt complex dyes of the general formula I ##STR1## in which X1 is nitro or hydrogen, X2 is nitro, hydrogen, chlorine or methyl, Y1 is nitro or hydrogen, Y2 is nitro, hydrogen, chlorine or methyl, m a... | 05/08/1990 |
| 4874848 | Asymmetrical polyazo chromium complex dyes comprising resorcinol as a coupling component Dyes which are 1:2-chromium complexes, containing one azo dye or azomethine dye and one disazo dye or trisazo dye. The dyes are suitable for dyeing wool, synthetic polyamides and leather.... | 10/17/1989 |
| 4853466 | Water-soluble disazo reactive dyes and metals complexes (containing phosphonic acid groups) for dyeing cellulosic fibers This invention relates to disazo dyes, and their metal complexes, which are useful for dyeing cellulosic fibers in lightfast and washfast hues. In addition, these dyes have high water solubility, a high degree of fixation, acceptable migration and high wa... | 08/01/1989 |
| 4801695 | Iron complexes of azo dyes obtained from naphthylsulfonic acid, resorcinol and nitroaminophenol Iron complex dyes which are particularly suitable for dyeing leather in brown shades are obtained by coupling a naphthylaminesulfonic acid with resorcinol, subsequently coupling the reaction product with 4-nitro-2-aminophenol and metallizing with an iron ... | 01/31/1989 |
| 4694075 | Bisazo compounds containing anthranilic acid and thiazole moieties The compounds of the formula ##STR1## where Y is hydrogen, chlorine, bromine or nitro, Z is hydrogen, chlorine, bromine, a sulfonic ester group or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may ... | 09/15/1987 |
| 4665162 | 1:1 and 1:2 metal complexes of sulfo group-free azo compound having on average at least 1.3 basic water-solubilizing groups Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification, Rt is an arylazo group or a group of the formula --Y--Z, wherein Y is a direct b... | 05/12/1987 |
| 4656256 | Benzoazoresorcinol dyes containing a quaternized aminoalkylene oxycarbonyl group Compounds of the formula ##STR1## where Y is chlorine or bromine, Z is hydrogen, chlorine, bromine, a sulfonic ester group, nitro or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may not be interru... | 04/07/1987 |
| 4638055 | Iron, copper and chromium complexes of disazo dyes Compounds which in the form of the free acid are of the general formula I ##STR1## where A is a radical of the formula ##STR2## the radicals Y independently of one another are each hydroxyl or amino, X is hydrogen, hydroxysulfonyl or a radical o... | 01/20/1987 |
| 4587292 | Sulfo group-free azo compounds having on average at least 1.3 basic water-solubilizing groups in metal-free, 1:1 metal complex or 1:2 metal complex form Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification, Rt is an arylazo group or a group of the formula --Y--Z, wherein Y is a direct b... | 05/06/1986 |
| 4582896 | 1:2-metal complex dyes containing one atom of chromium or cobalt and two azo dyes each formed by coupling two diazo compounds to resorcinol Dyes of the formula ##STR1## in which Me is cobalt or chromium, A is a diazo component of a benzene or naphthalene which carries a hydroxyl or carboxyl group in the o-position relative to the azo group, B is an o-aminonaphthol, R and R' independently... | 04/15/1986 |
| 4563520 | Metal complexes of dis- or trisazo compounds containing a middle component twice substituted by hydroxy and/or amino Compounds containing sulfonic acid groups and of the general formula I ##STR1## where D1 is a radical of a diazo component, X1 and X2 independently of one another are each hydroxyl or unsubstituted or substituted amin... | 01/07/1986 |
| 4547566 | Copper, cobalt, nickel and iron complexes of disazo dyes Compounds which in the form of the free acid are of the general formula I ##STR1## where A is a radical of the formula ##STR2## the radicals Y independently of one another are each hydroxyl or amino, X is hydrogen, hydroxysulfonyl or a radical o... | 10/15/1985 |
| 4521216 | Disazo dyes Compounds of the general formula I ##STR1## where R is hydroxyl or unsubstituted or substituted amino, R1 is hydrogen or C1 -C12 -alkyl, X1 and Y1 independently of one another are each a carboxyl... | 06/04/1985 |
| 4491543 | Dis-, tris-, and tetrakisazo compounds containing resorcinol, sulfonylamino, and two or three sulfonic acid groups The present invention discloses substituted phenyl di and trisazo dyes free of reactive groups having two or three sulfonic acid groups, of the general formula: ##STR1## wherein D1 is ##STR2## Z is hydrogen or D4 --N.d... | 01/01/1985 |
| 4424152 | Metal complex dyestuffs, processes for their preparation and their use for dyeing nitrogen-containing materials Metal complexes of disazo dyestuffs of the formula ##STR1## wherein one X=chlorine and the other X=NO2, or both the radicals X=chlorine, and R=the radical of a diazo component of the benzene, naphthalene or diphenylamine series which, in the o-... | 01/03/1984 |
| 4263229 | Metal complex dyes of trisazo compounds having a 3,5-dinitro-2-hydroxyphenylazo group and two other arylazo groups bound to a 1-amino-3-hydroxy-1,3-diamino- or 1,3-dihydroxy-benzene nucleus Compounds of the formula ##STR1## homogeneous and heterogeneous metal complexes thereof, and mixtures of said compounds and complexes, wherein each A is independently hydroxy or amino, T is carboxy or sulpho, T1 is hydrogen, nitro, halo, alkyl,... | 04/21/1981 |
| 4120854 | Disazo and trisazo dyes having a 1,3-diamino-, dihydroxy- or amino-hydroxy-benzene nucleus and metal complexes thereof Compounds of the formula ##STR1## in which R1 is hydrogen or nitro, Each of R2 and R3, independently, is --OH or --NH2, R4 is hydrogen, nitro or (C1-4) alkyl, R5 is hydrogen, nitro or... | 10/17/1978 |
| 4118385 | Disazo compounds Azourethane and urea compounds corresponding to the formula ##STR1## WHEREIN R is an aliphatic hydrocarbyl radical, B is oxygen or -NH- and Ar is an arylene radical, are highly efficacious grease thickening agents.... | 10/03/1978 |
| 4066388 | Disazo dyes derived from 1-acyl-2,4-dihydroxybenzenes and metallized polyolefin dyed therewith Disazo dyes of the general formula: ##STR1## are provided where A is phenyl, naphthyl, phenyl substituted by up to 3 substituents or naphthyl substituted by up to 2 substituents; D is phenyl, naphthyl, or phenyl or naphthyl substituted by up to 2 sub... | 01/03/1978 |
| 3975369 | 2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene bound to a diphenylamine through an azo bridge Dyes of the formula ##SPC1## Wherein Each of R, R1, R2 and R3 is independently hydrogen, halo, nitro, unsubstituted or substituted alkyl or alkoxy, carboxy or sulfo, R4 is a diazo component radical, and Me is a me... | 08/17/1976 |
| 3956268 | Substituted phenyl-azo-phenylene-azo-phenyl dyes This invention provides novel disperse dyes of formula I, ##SPC1## in which R1 signifies hydrogen, cyano, alkyl or alkoxy, R2 signifies unsubstituted alkylcarbonyloxy; alkylcarbonyloxy substituted by halogen, alkoxy, alkylcarbonyl, aryl o... | 05/11/1976 |
| 3943122 | Polyazo compounds containing benzhydrol as a component Azo dyestuffs of the formula: ##SPC1## In which n is zero or 1, R represents a hydrogen atom or an alkyl or aryl group, A1, A2 and A3 each represent the residue of a diazotisable aromatic primary amine, which may be the sa... | 03/09/1976 |
