Abstract: A light absorption anisotropic film, having at least one dichroic dye, in which the light absorption anisotropic film shows a diffraction peak derived from a periodic structure in a direction in a plane of the light absorption anisotropic film in X-ray diffraction measurement and the diffraction peak has a half width of 1.0 ? or less.

Abstract: An object of the present invention is to provide an ink containing an azo compound which is excellent in solubility in a solvent and has a high extinction coefficient. The present invention relates to an ink comprising a solvent having a relative permittivity of 3 or less, as measured at a frequency of 1 kHz and at 22° C. and having a solubility in water of 20 mg/L or less at 25° C. and a specific azo compound.

Abstract: The present invention relates to dye mixtures which comprise at least one dye of the formula (I), at least one dye of the formula (II) and optionally at least one dye of the formula (III) and/or optionally at least one dye of the formula (IV) in which D1 to D7, R201 to R203, R0, R* and R**, T, M, v and f are as defined in claim 1, to dyes of the formula (II), to processes for their preparation, and to their use for dyeing and printing hydroxyl- and carboxamido-containing materials.

Abstract: The present invention claims dyestuffs of formula (I), wherein D, R1 to R7 and n are defined as given in claim 1, a process for their preparation and their use

Abstract: An electrophotographic photoconductor contains a conductive support; and a photoconductive layer disposed on the photoconductive support; wherein the photoconductive layer contains an azo compound expressed by a general formula <<1>> ArN?N—Cp)n,??(<<1>>) wherein in the general formula <<1>>, Ar is a substituted or non-substituted aromatic series hydrocarbon group or an aromatic series heterocyclic ring group which can be bonded by way of a bonding group; Cp is a coupler residual group; n represents an integer of 1, 2, 3, or 4, at least one of the Cp is a coupler residual group selected from the group consisting of general formulae <<2>>, <<3>>, and <<4>> wherein in the general formulae <<2>>, <<3>>, and <<4>>, all substituents are as defined in the specification.

Abstract: An ink, which contains at least one dye of formula (1): A—N?N—BX1n1B?—N?N—A???Formula (1) wherein A and A? each independently represent an aryl group or a monovalent heterocyclic group; B and B? each independently represent an arylene group or a divalent heterocyclic group; X1 represents a divalent linking group; n1 is 0 or 1; and at least one of A, B, A?, and B? is a heterocyclic group.

Abstract: Providing an electrophotographic photoconductor comprising a conductive support and a photoconductive layer disposed on the photoconductive support; wherein the photoconductive layer contains an azo compound expressed by a general formula <<1>>. Ar?N?N—Cp)n??general formula <<1>> (in the general formula <<1>>, Ar expresses one of a substituted or non-substituted aromatic carbon hydride group and heterocyclic ring aromatic series group which can be combined by way of a bond group; Cp expresses a coupler residual group; n expresses an integer of one of 1, 2, 3, and 4; at least one of the Cp is a coupler residual group selected from one of the following general formulae <<2>>, <<3>>, and <<4>>.

Abstract: Disperse dyes of the general formula I ##STR1## wherein D signifies a diazo component which is usual with disperse dyes,K signifies an aromatic radical of formula ##STR2## Y signifies ##STR3## and the other symbols have the meanings as defined in claim 1, are useful for dyeing or printing hydrophobic, fully or half-synthetic organic fiber materials.

Abstract: The disperse dyes of formula I ##STR1## wherein the symbols D, K, R.sub.3-5, R.sub.10, m, z, n and Y possess the significances given in claim 1, are eminently suitable for dyeing or printing hydrophobic, fully or semi-synthetic, organic fiber materials.

Abstract: An organic photoconductive material is represented by the following general formula [1]:A.sub.1 --N.dbd.N--B--N.dbd.N--A.sub.2 [1],wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A.sub.1 and A.sub.2 are groups different from each other, A.sub.1 is represented by the following general formula [A1]: ##STR1## wherein X is an atomic group which is necessary for forming an aromatic hydrocarbon ring or an aromatic hetero-ring by condensation with the benzene ring, Y is a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom, m is an integer of 1 to 4, R is an aromatic hydrocarbon ring group or an aromatic hetero-ring group and n is 1 or 2, and A.sub.2 is a group represented by one of the following general formulae [A2] and [A3]: ##STR2## wherein a.sub.1 is a group selected from R, --N.dbd.CH--R and ##STR3## R, X, Y, m and n are the same as those in the general formula [A1] and p is 0 or 1.

Abstract: An organic photoconductive material is represented by the following general formula [1]:A.sub.1 -N.dbd.N-B-N.dbd.N-A.sub.2 [1],wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A.sub.1 and A.sub.2 are groups different from each other, A.sub.1 is represented by the following general formula [A1]: ##STR1## wherein X is an atomic group which is necessary for forming an aromatic hydrocarbon ring or an aromatic hetero-ring by condensation with the benzene ring, Y is a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom, m is an integer of 1 to 4, R is an aromatic hydrocarbon ring group or an aromatic hetero-ring group and n is 1 or 2, and A.sub.2 is a group represented by one of the following general formulae [A2] and [A3]: ##STR2## wherein a.sub.1 is a group selected from R, -N.dbd.CH-R and ##STR3## R, X, Y, m and n are the same as those in the general formula [A1] and p is 0 or 1.

Abstract: 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, R.sup.1 and R.sup.2, independently of one another, are each a substituted or unsubstituted aryl or heteroaryl radical, X.sup.1 and X.sup.2, independently of one another, are each ring-forming ether oxygen or a substituted or unsubstituted imide grouping and n has the value 0 or 1, in which rings A and B, independently of one another, can each be additionally substituted and/or carry substituted or unsubstituted fused rings.These new compounds of the formula (I) are obtained by coupling diazotized amines or diamines of the type D--NH.sub.2 or H.sub.2 N--D--NH.sub.2 with (benzoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides.Depending on the presence and length of alkyl chains, the compounds of the formula (I) are suitable for use as pigments, disperse dyes or oil-soluble dyes.

Abstract: A compound of Formula (1) and salts thereof: ##STR1## wherein: L is optionally substituted piperazinyl;D is optionally substituted phenylene or naphthylene;E is optionally substituted phenylene, naphthylene or quinoline;R is H or C.sub.1-4 -alkyl;Z is optionally substituted carboxyaryl; andn has a value of 0 or 1.A compound of Formula (1) is useful as a colorant for black inks suitable for ink jet printing.

Abstract: A compound of the formula I ##STR1## in which D is a diazo component,K is an aromatic group of formula a, b or c, ##STR2## Y is C.sub.2-3 alkylene and the remaining symbols are as defined in the specification. These compounds are useful for dyeing or printing textile substrates based on synthetic or semisynthetic, hydrophobic, high molecular weight organic materials. Preferably, the textile substrate is made from a linear aromatic polyester, cellulose 21/2 acetate or cellulose tri-acetate. The dyeings and prints obtained show good all round fastness properties such as good thermomigration properties, lightfastness, thermofixation, blistering properties as well as good wet fastness properties, especially after thermal fixation.

Abstract: Disclosed is an imidazole azo dye of formula (I), which is useful for image formation and as a filter dye, which has a sharp absorption wave and which is fast to light, heat, air, moisture and chemicals. Also disclosed is a thermal transfer dye-donating material containing imidazole azo dye(s) of formula (I) preferably along with aminopyrazole azo dye(s) of formula (II). The material gives a high-density image with good color reproduction, and the image formed has improved storage stability. ##STR1## In (I), B and C independently represent a hydrogen atom or a substituent capable of being substituted in the imidazole ring; A represents an aryl or heterocyclic group; provided that when B is a hydrogen atom, C is not a hydrogen atom nor an alkyl group having from 1 to 3 carbon atoms; provided that when C is a hydrogen atom, B is not a substituted nor unsubstituted alkyl group; provided that C is not a mercapto group or an alkylthio group; and provided that B is not a carboxyl group.

Abstract: The present invention provides a salt forming-type dye represented by the formula: ##STR1## wherein Ka.sup.+ is a C.sub.6-20 amine cation or a basic dye cation, and n is an integer of 1 to 4, which indicates the number of Ka.sup.+. The salt-forming dye can be used in an ink composition.

Abstract: A metal chelate compound of a dis-azo compound represented by the following formula (I) with a metal: ##STR1## (wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, and D is an aromatic residue which may have a substituent, or a heterocyclic amine residue which may have a substituent, and Y is a group having active hydrogen) and an optical recording medium having a recording layer provided on a substrate so that information can be written in and/or read out by a laser, wherein the recording layer contains a metal chelate compound of the dis-azo compound represented by the above formula (I), with a metal.

Abstract: The present invention relates to a chromogenic benzoisothiazolone polymer derivative for measuring the presence or appearance of thiols in an aqueous system.

Abstract: The dyes according to the invention consist of a chromophore and a radical which, on heating, forms an isocyanate or isothiocyanate group. The latter reacts with a suitable group in the environment. Dyeings of excellent thermomigration fastness are obtained. The disclosed dyes are of the formulae ##STR1## where F is the radical of an azo, anthraquinone or tricyanovinyl dye which is free of water-solubilizing groups,B and B' are each independently of the other a direct bond or a bridge member, selected from the group consisting of a straight-chain or branched alkylene group having 2 to 8 C atoms or one of the following groups ##STR2## where R is hydrogen or C.sub.1 -C.sub.6 alkyl, n is an integer from 1 to 8 and m is an integer from 2 to 4,Z is O or S,V is a group which at a temperature between 180.degree. and 240.degree. C. is eliminated as a radical HV, andV' is a direct bond which is cleaved at a temperature between 180.degree. and 240.degree. C.

Abstract: The invention relates to compounds of the formula (I) ##STR1## where D.sup.1 and D.sup.2 are each independently of each other unsubstituted or substituted aryl or hetaryl. The compounds are obtained by diazotizing one or more amines of the formula D-NH.sub.2 where D has the meaning D.sup.1 or D.sup.2 as per the formula (I) and coupling with 0.5 mole of 1,5-diazabicyclo[3.3.0]octane-2,4,6,8-tetrone per mole of total reacting diazonium salts. Depending on the presence and length of alkyl chains the compounds are suitable for use as pigments, disperse dyes or even fat dyes.

Abstract: This invention relates to the cytology of blood, bone marrow, and lymph node cells, and to the composition and method of differentiating, identifying, and enumerating said cells among a plurality of cells of hematopoietic origin. More specifically, the invention is directed to the use of basis cationic diazo dyes capable of staining a plurality of cells of hematopoietic origin to differentiate and enumerate the abnormal from the normal cells. The stained cells obtained by this invention have individual color characteristics which permit the identification and differentiation by use of various optical instruments, including, for example, an image analyzer, microscope, photomicroscope and the like.

Abstract: The present invention relates to a photosensitive member containing a specific azo compound for a charge generating agent, which is improved in photosensitive properties, in particular, sensitivity. The specific azo compound is represented by the formula (1): ##STR1## wherein A represents an aromatic hydrocarbon or a heterocyclic ring; R.sub.1 and R.sub.2 independently represent a hydrogen, a halogen atom, or an alkyl, aralkyl, aryl, condensed polycyclic ring or condensed heterocyclic ring; or R.sub.1 and R.sub.2 combinedly form a cyclic ring; n represents an integer from 1 to 4.

Abstract: 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## wherein all the symbols are defined in the specification.

Abstract: An azo compound of the formula:A--N.dbd.N--B--N.dbd.N--Dwherein:A is (i) a phenyl group containing at least two unsaturated electron-withdrawing groups in ortho or para positions with respect to the azo link, (ii) an aromatic heterocycle, or (iii) the residue of an aromatic coupling component having a group displaceable by a diazotized aromatic amine;B is an substituted or unsubstituted thien-2,5-ylene or thiazol-2,5-ylene group; andD is the residue of an aromatic coupling component having a group displaceable by a diazotized aromatic amine.The azo compound has a significant absorption band extending into the near infra-red region of the spectrum and has utility in applications, such as solar screening, electronic, optical character recognition, printing, reprographic and security systems, where enhanced infra-red absorption is necessary or desirable.

Abstract: A photoconductive film includes at least one kind of bis-azo pigments and exhibits a high sensitivity. The film may be used as an electrophotographic light-sensitive element.

Abstract: A dis-azo dye for polyester fibers represented by the formula ##STR1## wherein Y is hydrogen or acetylamino and R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 alkyl, cyanoethyl, acetoxyethyl or C.sub.1 -C.sub.4 alkoxyethyl.

Abstract: Disazothiphene dyes of the formula ##STR1## where X is an electron withdrawing group, Z is an electron withdrawing group, D is the radical of a diazo component and K is the radical of a coupling component, are highly suitable for dyeing synthetic fibers, in particular polyesters.

Abstract: Azo compounds of the formula I ##STR1## where D=diazo componentR.sub.1 and R.sub.2 =alkyl or aralkylX=H, hydrocarbon radical or acylare useful dyestuffs or dyestuff intermediates.

Abstract: An azo dyestuff of the formula ##STR1## wherein D=a diazo component,R.sub.1 and R.sub.2 =alkyl or aralkyl,R.sub.3 =H, R or OR.sub.1 andR.sub.4 =a hydrocarbon radical or acyl,which are prepared in a simple manner by aminolysis with ammonia or an amine of the formula ##STR2## of an azo compound of the formula ##STR3## these dyestuffs dye polyester fibres in blue-green to green shades with good fastness to light.

Abstract: Disazo dyes for dyeing cellulose-containing fibers represented by the following general formula: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a thiocyanato group, a trifluoromethyl group, a formyl group, a lower alkoxycarbonyl group, a lower alkylsulfonyl group, a sulfamoyl group, an N-lower alkylsulfamoyl group or an N,N-di-lower alkylsulfamoyl group, R.sup.3 represents a hydrogen atom, a methyl group, a chlorine atom, a lower alkoxy group or an acylamino group, R.sup.4 represents a hydrogen atom, a methyl group, a chlorine atom or a lower alkoxy group, R.sup.5 represents a hydrogen atom, a lower alkyl group or a halogen atom, --X-- represents ##STR2## --SO.sub.2 -- or --CH.sub.2 --, and n represents 0 or 1. These dyes are capable of dyeing cellulose-containing fibers, particularly fiber blends composed of cellulose fibers and polyester fibers, blue to bluish green with good fastness properties.

Abstract: Metal complex dyestuffs which in the form of the free acid correspond to the formula ##STR1## in which the substituents have the meaning given in the description are, depending on the meanings of the substituents, suitable for use as reactive dyestuffs for cotton, wool or polyamide, as direct dyestuffs for cotton or as pigment dyestuffs. Dyeings are obtained which have good fastness properties, in particular good wet-, light- and chlorine fastness.

Abstract: A process for preparing a disazo dye represented by the following formula: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a halogen atom, a nitro group, a trifluoromethyl group, a lower alkoxycarbonyl group or a lower alkylsulfonyl group, R.sup.3 represents a lower alkyl or allyl group which may optionally have a substituent or substituents, and R.sup.4 represents a lower alkyl or allyl group having a substituent or substituents, which comprises diazotizing an amine represented by the following formula: ##STR2## wherein R.sup.1 and R.sup.2 are the same as defined above, and coupling the diazotized product with a bis(N,N-di-substituted anilino)methane represented by the following formula: ##STR3## wherein R.sup.3 and R.sup.4 are the same as defined above.

Abstract: The present invention provides a tetrazoneum salt compound represented by the general formula (I): ##STR1## (wherein, X stands for an anion functional group); a disazo compound represented by the general formula (II): ##STR2## wherein, A stands for ##STR3## (wherein, R stands for an alkyl group, an alkoxy group, a nitro group, halogen, a cyano group or a halomethyl group, n stands for an integer of 0, 1, 2 or 3, and in case n is an integer of 2 or 3 R may be the same or different); a method for the production thereof, and electrophotographic elements using the same or like disazo compounds as the charge carrier generating materials.

Abstract: An electrophotographic material comprises a conductive support and a light-sensitive layer containing at least one of the azo compound of the formulas [I]-[III]:formula [I]:Cp.sub.1 --N.dbd.N--A--N.dbd.N--Cp.sub.2A represents a divalent residue which bonds through C atoms to N atoms which constitute azo and Cp.sub.1 is a group of by the formula: ##STR1## Z represents a substituted or unsubstituted carbocyclic aromatic ring, a substituted or unsubstituted heterocyclic aromatic ring or a unsaturated monocyclic hydrocarbon ring and R represents an aryl group containing one or two CF.sub.3 groups and Cp.sub.2 is a coupler residue different from said Cp.sub.1 and is selected from following formulas (a)-(f): ##STR2## Z.sup.1 and Z.sup.2 represent a substituted or unsubstituted aromatic hydrocarbon ring or substituted or unsubstituted hetero ring, R.sup.1 and R.sup.2 represent substituted or unsubstituted alkyl, aralkyl, aryl or hetero ring group, R.sup.3 represents an alkyl or carboxyl group or an ester thereof, R.

Abstract: Disazo dyestuffs for polyester fibers represented by the following general formula: ##STR1## wherein X represents a hydrogen atom, a chlorine atom, a trifluoromethyl group or a nitro group, Y represents a cyano group, a lower alkoxycarbonyl group or a lower alkoxyalkoxycarbonyl group, Z represents a hydrogen atom, a chlorine atom, a bromine atom, a methyl group or an acylamino group, R.sup.1 represents a hydrogen atom, a lower alkyl group, a cyanoalkyl group, a hydroxyalkyl group, a lower alkoxyalkyl group, a lower alkoxyalkoxyalkyl group, an aryloxyalkyl group, an acyloxyalkyl group, an alkenyloxyalkyl group, a lower alkoxycarbonylalkyl group, a lower alkoxyalkoxycarbonylalkyl group, a lower alkoxycarbonyloxyalkyl group, an alkenyl group or an aralkyl group, R.sup.

Abstract: An electrophotographic photosensitive member comprises a photosensitive layer containing a disazo pigment represented by the formula, ##STR1## wherein R.sub.1 and R.sub.2, which may be either identical or different, each represent hydrogen atom, alkyl group, alkoxy group, halogen atom or cyano group, and A represents a coupler residue having a phenolic hydroxyl group.

Abstract: A pigment composition comprising(a) an organic pigment and(b) from 0.5% to 20% by weight, based on the weight of organic pigment, of a pigment derivative having the formula:A--[N.dbd.N--B].sub.nwherein n is 1 or 2, A is an aryl or heterocyclic residue, B is an aryl or heterocyclic residue and wherein A and/or B contains a residue having the formula: ##STR1## wherein Z is a group of atoms necessary to complete a benzimidazole, pyridine, benzodiazepine, quinoline, isoquinoline or naphthimidazole residue, gives printing inks and especially paint media having improved tinctorial strength, gloss and especially improved rheological properties.