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Matches 501 - 550 out of 6,081

Document Document Title
WO/1996/003462A1
The invention concerns azo dyes of formula (I) in which D stands for a diazo component group from the aniline series or from the aromatic heterocyclic amine series, R1 and R2 designate C1-C10 alkyl, which is optionally substituted, C5-C7...  
WO/1995/034273A1
The invention concerns direct-acting hair colouring agents which contain a cationic polymer, a given 'alpha'-hydroxy acid and an ether-carboxylic acid.  
WO/1995/034024A1
A process for preparing an optical filter comprising a coloured cross-linked polymeric coating on a transparent substrate, which comprises applying to the substrate, by a printing process, a mixture comprising one or more polymer precurs...  
WO/1995/032249A1
The invention is a dye composition containing two or more dyes of the vinyl sulfone type which can be used in combination to dye polyamide substrates. Preferably the dye compositions of the invention contain at least three dyes of differ...  
WO/1995/028287A1
A thermal transfer sheet comprising a substrate having a coating comprising a dye of formula (1), wherein Y is -H, alkyl, alkoxy, -NHCOalkyl, NHCOaryl, -NHSO2alkyl or -NHSO2aryl; ring A is unsubstituted apart from the -N=N-, -Y and -N< g...  
WO/1995/028447A1
A disperse dye of formula (1), in which R1 is alkyl, cycloalkyl, aryl, alkenyl or aralkyl each of which may be optionally substituted; R2 and R3 each independently is optionally substituted alkyl; R4 is -H, -OH or alkyl, alkoxy, - NHCOal...  
WO/1995/028396A1
Phenol derivatives of the general formula (I) in which R1, R2, R3, X, Y and Z have the meanings given in the description, a process for their production and their use, especially in non-linear optics.  
WO/1995/020014A1
A process for colouring a synthetic textile material or fibre blend thereof which comprises applying to the synthetic textile material a compound or mixture thereof, which is free from water solubilising groups, of the Formula (1) A-N=N-...  
WO/1995/017483A1
The use of azo dyes of the formula (I) in which ring A can be benzoanellised, n is 0 or 1, R1 is hydrogen or possibly substituted C1-C5 Alkyl, R2 is possibly substituted C1-C15 alkyl, R3, R4, R5, R6 and R7 are hydrogen, C1-C15 alkyl or C...  
WO/1995/015969A1
The present invention consists in methods of preparing sugar derivatives either in isolation or from glycopeptides or glycoproteins. The methods comprise producing sugar hydrazones, sugar pyrazoles, glycosylpyrazones, azoglycan dyes and ...  
WO/1995/014957A1
The use of azo dyes with a diazo component derived from an aminothienothiophene and a coupling component from the aniline series in non-linear optics, polymers derived from these azo dyes, their use in non-linear optics and novel phenyl ...  
WO/1995/011279A1
Novel polymerizable yellow dyes are disclosed. Additionally, novel and known dyes are used to block or lower the intensity of blue light transmitted through ocular lenses and other windows.  
WO/1995/011278A1
Diphenylamines have formula (I), in which the ring A may be benzoanellated; D stands for an aryl radical or for a five-membered aromatic heterocyclic residue that has 1 to 3 heteroatoms in the heterocyclic ring selected from the group th...  
WO/1995/010581A1
A process for detecting marked mineral oils by treating the marked mineral oil with an extracting agent containing water, a solvent and a base, in which use is made as the marking agent of an azo dye of formula (I), in which ring A may b...  
WO/1995/009382A1
The invention concerns the use, in non-linear optics, of azo dyes in which the diazo component is derived from an aniline or a five-membered aromatic heterocyclic amine which has one to three ring hetero-atoms selected from the group com...  
WO/1995/007318A1
Dye mixtures contain at least four dyes having the same colour of formula (I), in which R4 stands for hydrogen or C1-C4-alkyl; D stands for the residue of a diazo component from the aminoanthraquinone, aniline, aminothiophene, aminothiaz...  
WO/1995/006687A1
Triazolopyridine azo dyes of formula (I) in which one of the two radicals A and E is nitrogen and the other is a radical of the formula C-R1, in which R1 is optionally substituted C1-C20 alkyl, optionally substituted phenyl or optionally...  
WO1993015596A3  
WO/1995/005420A1
Azo dyes have formula (I), in which R1 stands for optionally substituted C1-C20-alkyl, optionally substituted phenyl or optionally substituted mercapto; R2 stands for hydroxy or mercapto; and D stands for the residue of a diazo component...  
WO/1995/002848A1
A monlinear optically-active azo dye monomer comprising functionalities at opposite ends thereof which have differing reactivities, thus allowing the functionalities to be reacted in a stepwise fashion. The monomers can be incorporated i...  
WO/1995/002581A1
A second order nonlinear optically-active azo monomer comprising a benzimidazole moiety. The monomers can be incorporated into both linear and crosslinked polymers useful in electrooptical devices.  
WO/1995/001772A1
Keratin-containing fibres, in particular human hair, are dyed using dyes of formulae (1) to (6) indicated in claim 1. These dyes make it possible to dye by the trichromatic principle even in dark shades.  
WO/1995/000473A1
A novel calix[4]arene compound, application of the compounds as an active component in a calcium sensitive sensor, and a calcium sensitive sensor containing the compound. The calix[4]arene compound has general formula (I). The sensor is ...  
WO/1994/022961A1
A compound of formula (1) and salts thereof, wherein R1 and R2 are each independently optionally substituted alkyl; R3 is H or optionally substituted alkyl; X is a labile atom or group; Y is a labile atom or group or a group of formula (...  
WO/1994/018274A1
An azo color for color filters which has at least one monosubstituted sulfonamide group in its molecule and is soluble in an aqueous alkali solution and organic solvents, and a process for producing a color filter having a number of colo...  
WO/1994/017388A1
An ion selective optrode or optical chemical sensor makes use of a primary absorber dye (14) whose color changes with the analyte concentration, and a fluorophore (18) whose excitation and/or emission is modulated by the changing absorpt...  
WO/1994/008797A1
A thermal transfer sheet comprising a substrate having a coating comprising a dye of formula (1), wherein: A is the residue of a diazotisable aromatic or heterocyclic amine; R1 is an optionally substituted branched chain alkyl group; R2 ...  
WO/1994/009073A1
A dye of formula (1) wherein: A is isothiazolyl, benzoisothiazolyl, pyridoisothiazolyl, 1,2,4-thiadiazolyl or 1,3,4-thiadiazolyl; R1 is an optionally substituted branched chain alkyl group; R2 is an optionally substituted straight or bra...  
WO/1994/004539A1
Chromogenic reagents, and more particularly compounds which function as selective cation-sensitive dyes are disclosed. The compounds are of formula (II) wherein X is a chromophore; Y and Z are -CH2(CHR-O-CHR)nCH2- in which n is an intege...  
WO/1994/004123A1
The invention concerns 4-[4\'-[bis(beta-hydroxyethyl)amino]-phenylazo]-benzene sulphonic acid amides and hair-dyeing agents containing such compounds. The hair dyes proposed have a high resistance to acids and make it possible to produce...  
WO/1994/000518A1
Disclosed are dye mixtures containing 35 to 90 % by wt., relative to the weight of the dyes, of a dye of formula (I), in which n is 1 and R is C1-C4 alkyl, plus 10 to 65 % by wt., relative to the weight of the dyes, of a dye of formula (...  
WO/1993/025182A1
The invention concerns hair dyes containing at least one 4'-amino-2-halo-4-[bis-($g(b)-hydroxyethyl)amino]-azobenzene . The hair dyes described have high resistance to acids and make it possible to produce a wide range of natural and fas...  
WO/1993/023006A1
Oxidation hair dye in cream form consisting of a carrier and a dye mixture dissolved therein, containing: (A) 10 to 30 wt. % of at least one fatty alcohol with 10 to 24 carbon atoms; (B) 0.2 to 6.0 wt. % of at least one diester of formul...  
WO/1993/023479A1
Azo dyes of formula (I) in which L?1¿ is hydrogen, C¿1?-C¿8? alkyl or phenyl, L?2¿ and L?3¿ are possibly substituted C¿1?-C¿8? alkyl or L?2¿ and L?3¿ together are a residue of formula (a) or (b) in which n is 0, 1 or 2, Y?1¿ an...  
WO/1993/015596A2
Nonlinear-optic (NLO) compositions containing functionalized merocyanine dyes, such that the molecules, comprising the NLO-active compositions have a functional group at each end of the molecule and each functional group differing in rea...  
WO/1993/013458A1
A photographic element is detailed which provides for improved resolution by decreasing the blue and ultraviolet radiation typically associated with internal scatter and print-through. These and other improvements are provided in a photo...  
WO/1993/012428A1
The invention provides compounds represented by formula (I), wherein Y is -(CH2)2[O(CH2)2]n- in which n is an integer from 1 to 6; Z is -N=N-Ar in which Ar is a substituted or unsubstituted aryl group; Q is hydrogen or an alkyl group hav...  
WO/1993/009468A1
A high resolution radiography system is presented utilizing an intensifying screen incorporating a UV emitting phosphor. The photographic element exhibits enhanced sensitivity to the emission of the phosphor and further comprises at leas...  
WO/1993/003100A1
A method and reagent for the colorimetric determination of magnesium in a fluid. The method comprises contacting a sample of the fluid with the reagent comprising the metallochromic dye substance, 2-(4,5-dihydroxy-2,7-disulpho-3-naphthyl...  
WO/1992/021064A1
A novel blocked filter dye comprises a new blocking group that (a) comprises two electrophilic groups, the least electrophilic of which is bonded directly or through a timing group to the filter dye group of the compound, (b) is capable ...  
WO/1992/017550A1
A biodegradable azo dye contains a nitrogen atom linked to an aromatic ring having a lignin-like substitution pattern. The ring is preferably a syringyl or guaiacol moiety, and provides a naturally-occurring structure for attack by micro...  
WO/1992/014791A1
Benzophenonazo dyes have formula (I), in which the A ring may be benzenically annelated and a benzenically annulated A ring may be bridged; m is 1 or 2; K stands for the residue of a coupling component; Y stands for hydrogen or arylazo; ...  
WO/1991/018057A1
A metal chelate compound between a monoazo compound of general formula (I) and a metal, wherein A represents a residue which forms a heterocycle together with the carbon and nitrogen atoms to which it is bonded, B represents a residue wh...  
WO/1991/014744A1
Monoazo pigments are provided which have improved properties achieved by incorporating certain azomethine compounds. The pigment compositions are prepared by reacting a primary amine-terminated alkylene oxide polymer and an acetoacetanil...  
WO/1991/013942A1
A metallizable orange azo dye for color filter arrays is disclosed. This dye is comprised of: a 3-pyridinol moiety substituted in the 2-position with a methyl group; and an aryl ring connected to the 6-position of the pyridinol moiety th...  
WO/1991/013941A1
The invention relates to monoazo and diazo compounds of formula (I) where D stands for a carbocyclic or heterocyclic diazo or bisdiazo constituent group, R?1� and R?2� each independently stand for a possibly substituted aryl or heter...  
WO/1991/008265A1
The description relates to azo compounds corresponding to formula (1) below, having fibre-reactive properties and making valuable dyes. They can dye hydroxy and/or carbonamide group-containing synthetic and natural materials, especially ...  
WO/1991/004488A1
A method and system for detecting solubilized compounds containing vicinal hydroxyl groups, in which a solution of interest is exposed to a dye compound whose optical properties undergo predictable change in relation to the concentration...  
WO/1991/002772A1
Dispersed nonoazodyes are obtained by means of bromination of substituted nitrochlorobenzene of general formula (I), where X = H, NO2, Cl, Br, CN, amination of the obtained compound, subsequent diazotisation of 2-X-4-nitro-6-bromo-anilin...  
WO/1991/002254A1
A method and a system for quantitatively monitoring a chemical component dissolved in a liquid medium involve the creation, in a measurement chamber, of an interface zone between the liquid medium and an analytical reagent or reference s...  

Matches 501 - 550 out of 6,081