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Class 534/685 - At least three azo groups attached indirectly to each other by nonionic bonding


Subclass of Class 534 - Organic compounds -- part of the class 532-570 series
Definition: Compounds in which at least two azo groups are attached
No. of patents: 36
Last issue date: 09/19/2006


NumberTitleIssue Date
7108897Dye type polarizing plate
This invention relates to a polyvinyl alcohol type polarizing film or plate which comprises a water-soluble dye having the formula (1) in a free acid form or a copper complex salt thereof. The said polarizing plate has excellent polarizing performance capability and...
09/19/2006
7084191Ink composition resistant to solvent evaporation
The present invention is directed to an ink composition resistant to solvent evaporation which may be employed for use in retractable permanent marker pens. Generally, the ink composition of the present invention comprises n-propanol, a pyrrolidone, a tryglyceride, ...
08/01/2006
6929666Composition comprising a dye
A composition of matter (e.g., a molded article) is described. More particularly, the composition of matter includes: (a) a resinous component selected from at least one member of the group consisting of (co)polyester, (co)polycarbonates, acrylontrile-butadiene-styr...
08/16/2005
6153734Oligomer azo colorants
Oligomeric azo dyes having an alternating construction made up of tetrazo components and coupling components, containing in the molecule at least 2 units of the structure I ------[D--------K]------ (I) where D and K are as def...
11/28/2000
6114512Oligomeric azo dyes
Oligomeric azo dyes having an alternating construction made up of diazo components and coupling components, containing in the molecule at least 3 units of the structure I --[D--K]-- (I) where D is a tetrazo compo...
09/05/2000
6028180Ink compositions
An ink comprising water, a water-dissipatable polymer and one or more dyes having a benzene ring carrying a hydroxy group at each of the 1-, 3- and 5-positions and an azo group at each of the 2-, 4- and 6-positions or a tautomer thereof. Also claimed are ...
02/22/2000
5700296Azo 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
5659020Tetrakisazo compound and a polarizing film containing the same
A tetrakisazo compound of the formulae: ##STR1## wherein Q1 represents a phenyl or naphthyl group, Q2 represents a phenyl which is substituted by at least one substituent selected from a hydroxy group and an amino group, and R
08/19/1997
5536819Trisazo compounds imparting deep black color a method for dyeing by using them and an ink containing them
A trisazo compound represented by the following formula (I) in the free acid form: ##STR1## wherein Q is an phenyl or naphthyl group both of which may be unsubstituted or substituted; one of the A and B is hydroxy group and the other is amino gr...
07/16/1996
5530105Tetraskisazo compound and ink containing the compound
A tetrakisazo compound represented by the following formula (1) in the free acid form: ##STR1## wherein Q1 and Q2 independently represent phenylene or naphthylene group which may be optionally substituted, R4, R5...
06/25/1996
5488101Trisazo compounds, method for dyeing fiber materials, paper or leather using the same and inks containing the same
Herein is provided a trisazo compound represented by formula (I) in the free acid form: ##STR1## wherein Q1 is an unsubstituted or substituted phenylene or naphthylene group, Q2 is an unsubstituted or substituted phenyl or ...
01/30/1996
5486601Trisazo dye, and aqueous ink composition containing the same
Disclosed is a trisazo dye represented by the formula: ##STR1## wherein R1 and R2 independently represent a substituted amino group which is substituted with hydrogen, a hydroxyl group, a carboxyl group, an amino group, an alkyl...
01/23/1996
5340929Trisazo dye and dye composition containing the same
The present invention provides a trisazo dye represented by the formula: ##STR1## wherein B is a substituted or non-substituted phenyl group, A is a phenyl group substituted with at least one substituent selected from the group consisting of an amino...
08/23/1994
5336763Trisazo dye and dye composition containing the same
The present invention provides a trisazo dye represented by the formula: ##STR1## [wherein A is a phenyl group substituted with at least one substituent selected from the group consisting of an amino group, a substituted amino group and a hydroxyl gr...
08/09/1994
5270455Polyazo 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
5171848Salts of black trisazo dyes with alkyl amines having good solubility in organic liquids
Black compounds of Formula (1) having enhanced solubility in polar organic liquids which are useful as ink colorants in conventional and hot melt ink-jet printing and automatic identification, as black colorants for toners and thermal wax transfer sheets ...
12/15/1992
5127946Ink, and ink-jet recording method and apparatus employing the ink
Provided is an ink containing a recording agent and a liquid medium for dissolution or dispersion thereof, said ink comprising, as the recording agent, a compound represented by the general formula (A) ##STR1## where n is 0 or 1; R1, R
07/07/1992
5104979Polyazo 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
5001226Metal-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
4996302Process for the preparation of polyazo dyes
A process for the preparation of polyazo dyes is described which comprises (a) diazotizing a compound of the formula ##STR1## and coupling the product onto a compound of the formula ##STR2## (b) diazotizing a compound of the formula ##STR3## ...
02/26/1991
4988804Polyazo dyes obtained by successive coupling of H-acid and two further anilinic diazo components on resorcinol or the like
Polyazo dyes obtainable by (a) diazotizing 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid and coupling onto a compound of the formula ##STR1## (b) coupling a diazotized compound of the formula ##STR2## onto the monoazo dye thus obtained, (c) c...
01/29/1991
4874848Asymmetrical 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
4758659Hexakisazo dyes
A hexakisazo dye suitable for dyeing cellulose, natural or synthetic polyamide meterials, leather, represented by the formula ##STR1## wherein X is --CH.dbd.CH--, --CONH--, --CRH-- (wherein R is phenyl which is unsubstituted or substituted by H or a ...
07/19/1988
4701525Polyazo dyestuffs having high UV absorption
Compounds of the formula in which A is the radical of a bisazo or trisazo dye, L and L' are organic radicals and B and B' are cyclic organic radicals and at least one of the radicals B and B' has spectral absorption in the UV region and one of the radical...
10/20/1987
46651621:1 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
4587292Sulfo 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
4491543Dis-, 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
4479906Trisazo dye
Trisazo dyes containing sulfo groups and having the formula: ##STR1## which for the most part give black colorations on paper and particularly on leather and are therefore especially useful as leather dyes....
10/30/1984
4443371Trisazo black dyes
New trisazo dyes, having the structure ##STR1## in which M represents H, Na, K, Li, or N(R3)H wherein R represents --H, --CH3, --C2 H5, --C3 H7, --CH2 CH2 OH, --C...
04/17/1984
4263229Metal 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
4169831Water-soluble tetrakisazo dyestuffs derived from 4,4'-diaminoazobenzene
Dyestuffs of the formula: ##STR1## in which C2 represents the radical of the formula: ##STR2## where X is NH2 or OH, C1 and C3 are different residues of molecules C1 H and C3 H fr...
10/02/1979
4120854Disazo 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
4081437Water soluble polyazo dyestuffs
Dyestuffs of the formula: ##STR1## in which C2 represents the radical of the formula: ##STR2## where X is NH2 or OH, C1 and C3 are different residues of molecules C1 H and C3 H fr...
03/28/1978
4009156Hydroxynaphthalene trisazo dyestuffs
The subject matter of the invention is trisazo dyestuffs, which in the form of the free acid correspond to general formula ##STR1## wherein K1 denotes the radical of the 2,8-dihydroxynaphthalene-6-sulfonic acid (coupled in alkaline medium)...
02/22/1977
3969339Water-soluble pentakis-azo dyestuffs derived from 4,4'-diaminoazobenzene
The invention is directed to pentakisazo dyestuffs of the formula: ##SPC1## In which A1 and A2 may be the same or different and each is monosulphonaphthylene, hydroxy-monosulpho-naphthylene or hydroxy-disulphonaphthylene and B1
07/13/1976
3943122Polyazo 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
 
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