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| Number | Title | Issue Date |
| 5543504 | Polymerizable yellow dyes and their use in ophthalmic lenses 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.... | 08/06/1996 |
| 5504199 | Method of introducing dyes to ethanol A dye which is either 2-naphthalenol (phenylazo) phenyl azo alkyl derivatives and 1,4-dialkylamino anthraquinone is added to sufficient non-ionic surfactant to compatibilize it with ethanol and an solvent to produce a homogeneous solution. The homogeneous... | 04/02/1996 |
| 5223387 | Color photographic light-sensitive material containing a naphthyl azo dicyano halo phenyl compound A color light-sensitive material comprising a support provided thereon at least one light-sensitive silver salt layer combined with an image forming compound represented by formula (I) ##STR1## wherein Dye represents a cyan dye group or a precursor t... | 06/29/1993 |
| 5037968 | Adducts of an anion of an oxa acid and a keto compound, process for the preparation of said adducts, and process for the determination of the concentration of the anions of oxa acids using said keto compounds Keto compounds in which to the carbon atom in the neighboring position to the keto compounds there is bonded at least one strongly electron attracting substituent and/or in which there is conjugating with the carbon-oxygen-double bond of the keto group a ... | 08/06/1991 |
| 4997920 | Monoazo compounds containing long-chain alkyl radicals Compounds of the formulae I and II ##STR1## in which A is a radical of the formulae III, IV or V ##STR2## R1 and R4 are --H or --Cl, R2 and R5 are --H, halogen, --NO2, --CN, C1 -C... | 03/05/1991 |
| 4994564 | Azo dyes with a diazo component of the 3-amino thiophene series and a coupling component of the pyridine, pyridone or pyrazole series Thien-3-ylazo dyes of the formula: ##STR1## where X is cyano, nitro, C1 -C6 -alkanoyl, substituted or unsubstituted benzoyl, substituted or unsubstituted phenyl or the radical COOR1 or CONR1 R2 w... | 02/19/1991 |
| 4981612 | Optical element having non-linear optical properties An optical element, such as a wave guide, having non-linear optical properties, suitable for use in optical devices in which it is desirable to alter the characteristics of the light, comprising a transparent or reflecting substrate having at least a part... | 01/01/1991 |
| 4956456 | Betaine-type cyan monoazo dyes for dying and printing fibrous materials The present invention is directed towards a betaine-type monoazo dye for dying and printing fibrous materials, represented by formula (I): Dye--X--Y (I) wherein Dye represents a cyan dye anion represented by formula ... | 09/11/1990 |
| 4776886 | Halftone gravure printing inks containing an azo dyestuff A halftone gravure printing ink (A) about 2 to about 20% by weight of colorant, (B) about 10 to about 40% by weight of resin and (C) about 80 to about 50% by weight of solvent wherein said colorant comprises azo dyestuff of the formula ##STR1## in which A... | 10/11/1988 |
| 4764599 | Disazo compounds containing an N,N-bis(2-amino-benzoyl)piperazine derivative as the diazo component Sulfo-free compounds of the formula ##STR1## where R is hydrogen or C1 -C4 -alkyl and K1 and K2 independently of one another are a radical of a coupling component, and the rings A and B may furthermore be m... | 08/16/1988 |
| 4743683 | Imidazole azo dyes A photographic recording material which contains at least one dye of the formula ##STR1## wherein D is the group of atoms necessary to complete a 5-membered ring that contains at least one nitrogen atom, A is hydrogen, alkyl, alkoxy, phenyl, alk... | 05/10/1988 |
| 4704452 | Azo dyes containing aralkyl-nitrophenyl diazo components Monoazo compounds of the formula ##STR1## in which one of the two substituents R1 or R2 or both substituents are C3 -C8 -alkyl or a group of the formula ##STR2## in which R3 and R4 | 11/03/1987 |
| 4642339 | Thiazoleazophenylaminoethyl carbonyloxy-C8 -C10 -alkyl compounds useful as dyes for polyester fibers This invention relates to thiazoleazophenylaminoethyl carbonyloxy-C8 -C10 -alkyl compounds useful as dyes for polyester fibers represented by the formula: ##STR1## wherein X represents hydrogen, chlorine, methyl, methoxy or etho... | 02/10/1987 |
| 4619893 | Light-sensitive material for silver salt diffusion transfer process with antihalation dye A light-sensitive material for a silver salt diffusion transfer process is described, having an antihalation layer containing at least one oil-soluble dye represented by following general formula (I) ##STR1## wherein X represents a benzene ring, a th... | 10/28/1986 |
| 4562139 | Photographic products employing novel nondiffusible metal complexes of azo dyes Photographic elements, diffusion transfer assemblages and coordination complexes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible dye moiety having the formula: ##STR1## wherein: (a) D1 | 12/31/1985 |
| 4544373 | 2,4-Dinitro-2'-acylamino-4'-dialkylamino-5'-alkoxy-alkyleneoxy-1, 1'-azobezene dyes There are described new azo dyes of the formula ##STR1## wherein R1 is an optionally substituted alkyl group, R2 is a substituted aliphatic radical, unsubstituted C3 -C10 -alkyl or cycloalkyl, and R3 | 10/01/1985 |
| 4528258 | Process for forming image A process for forming an image which comprises heating a light-sensitive material comprising a support having thereon at least a light-sensitive silver halide, a binder and a dye-releasing redox compound which is reductive to the light-sensitive silver ha... | 07/09/1985 |
| 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 |
| 4495100 | Non-diffusible cyan compound capable of releasing a 6-heterocyclylazo-3-pyridinol Nondiffusible compounds capable of releasing at least one diffusible cyan dye moiety having the formula: ##STR1## wherein: (a) Y represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring; (b) CAR represents a ball... | 01/22/1985 |
| 4495099 | Non-diffusible magenta compound capable of releasing a 4-(2-heterocyclazo)phenol having a heterocyclic ring fused thereto Nondiffusible compounds capable of releasing at least one diffusible magenta dye moiety having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring; (b) Y represents the atoms necessary ... | 01/22/1985 |
| 4495098 | Coordination complexes of polyvalent metal ions and cyan dye-releasing compounds comprising a 6-heterocyclazo-3-pyridinol Coordination complexes of a polyvalent metal ion and a nondiffusible compound capable of releasing at least one diffusible cyan dye moiety having the formula: ##STR1## wherein: (a) Y represents the atoms necessary to complete a 5- or 6-membered ... | 01/22/1985 |
| 4436799 | Photographic products and processes employing novel nondiffusible magenta dye-releasing compounds and precursors thereof Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible magenta dye moiety comprising a 4-(2-heterocyclylazo)phenol ... | 03/13/1984 |
| 4426326 | Nondiffusible metal-complexed azo dye-releasing compounds Nondiffusible compounds having a releasable azo dye moiety have the formula: ##STR1## wherein: (a) each Z and Z1 completes an aromatic carbocyclic or heterocyclic nucleus having at least one ring of 5 to 7 atoms; (b) G is a metal chelating... | 01/17/1984 |
| 4418131 | Photographic products and processes employing novel nondiffusible yellow dye-releasing compounds and precursors thereof Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound having a releasable yellow dye moiety or precursor thereof, the compound having the formula: ##STR1#... | 11/29/1983 |
| 4412951 | Reagents for measuring lipase activity A reagent for measuring a lipase activity comprised of a higher fatty acid ester having the general formula ##STR1## wherein R1 is a straight chain alkyl group; R2 is hydrogen or a halogen atom; R3 and R4 a... | 11/01/1983 |
| 4396546 | Photographic products and processes employing novel nondiffusible 6-(2-thienylazo)-3-pyridinol cyan dye-releasing compounds and precursors thereof Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-(2-thienylazo)-3-pyridinol cyan dye moiety or precursor thereof, the compound containing: (a) in the 3-posi... | 08/02/1983 |
| 4395350 | Liquid crystal mixtures Liquid crystal mixtures containing a coloring substance which comprise about 5 to about 40 weight % of trans-p-[5-(4-alkylcyclohexyl)-2-pyrimidinyl]benzonitriles, about 10 to about 60 weight % of trans-4-alkylcyclohexane carboxylic acid phenyl esters... | 07/26/1983 |
| 4385104 | Photographic products and processes employing novel nondiffusible 6-(2-thienylazo)-3-pyridinol cyan dye-releasing compounds and precursors thereof Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-(2-thienylazo)-3-pyridinol cyan dye moiety or precursor thereof, the compound containing: (a) in the 3-posi... | 05/24/1983 |
| 4381262 | Water-insoluble azo dyestuffs, their manufacture and their use An azo dyestuff of the formula ##STR1## wherein R is linear alkyl having 2 to 4 carbon atoms and R' is linear alkyl having 3 to 5 carbon atoms and isopropyl.... | 04/26/1983 |
| 4380452 | Dyeing and printing of cellulose-containing textile material A process for dyeing and printing cellulose-containing textile material, wherein the dye used is a compound of the general formula I ##STR1## where K is the radical of a coupling component of the pyridone, pyrazole or indole series, one of the radica... | 04/19/1983 |
| 4377390 | Acetoacetic arylide azo dyestuffs for synthetic materials, especially polyester Dyestuffs of the formula ##STR1## wherein R denotes hydrogen or alkyl, X denotes R, Cl or Br, m and p denotes 0 or 1, n denotes 2 to 4, A denotes oxygen or --NR-- and B denotes C1 -C8 -alkyl, alkenyl, cycloalkyl, aralkyl or aryl, are espe... | 03/22/1983 |
| 4346155 | Photographic products and processes employing novel nondiffusible 6-arylazo-3-pyridinol magenta dye-releasing compounds and percursors thereof Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-arylazo-3-pyridinol magenta dye moiety or precursor thereof having the formula: ##STR1## wherein:... | 08/24/1982 |
| 4288511 | Photographic elements containing encapsulated polymers coordinated with metal ions A photographic element comprises a support having thereon a layer containing a hydrophilic vehicle having dispersed therein a particulate polymeric material encapsulated with a chelating or already chelated polymer, said element, when the polymer is not a... | 09/08/1981 |
| 4277398 | Magenta-masked color azopyrazolinone couplers Orange colored magenta color couplers of the general formula ##STR1## are provided, in which R is optionally substituted alkyl, aralkyl, aryl or a heterocyclic group, X is optionally substituted aryl, Y is optionally substituted acyl-amino, aroyl ami... | 07/07/1981 |
| 4273708 | Carbonyl-substituted cyan azo dye-providing materials Cyan azo dye-providing compounds have the formula: ##STR1## wherein: R1 is selected from the group consisting of aryl, alkyl or NR11 R12 wherein R11 is alkyl or aryl and R12 is alkyl, or R11... | 06/16/1981 |
| 4272434 | Nondiffusible compounds having a releasable azo dye moiety Photographic elements, diffusion transfer assemblages and processes are described which employ a nondiffusible compound having a releasable azo dye moiety having the formula: ##STR1## wherein: Z represents the atoms necessary to complete an aromatic ... | 06/09/1981 |
| 4268624 | Photographic light-sensitive sheet for the color diffusion transfer process A photographic light-sensitive sheet for the color diffusion transfer process which comprises a support having thereon at least one light-sensitive silver halide emulsion layer having associated therewith a dye image providing material represented by the ... | 05/19/1981 |
| 4257942 | New water-insoluble azo dyes The present invention relates to the synthesis of new dyes having the following general formula: ##STR1## wherein: D is the residue of a diazotizable component of the carbocyclic or heterocyclic series X is an ethylene group, optionally substituted b... | 03/24/1981 |
| 4233237 | 2-Alkoxyalkoxy-5-aminobenzenesulfonic acid A 2-alkoxyalkoxy-5-aminobenzenesulfonic acid represented by the following general formula (I): ##STR1## wherein R1 represents an alkylene group having 2 or more carbon atoms; and R2 represents an alkyl group. The compound can be... | 11/11/1980 |
| 4231746 | Dyeing of cellulose-containing textile material and novel dyes for use therein A process for dyeing cellulose-containing textile material, wherein a dye of the general formula I ##STR1## where R is an aliphatic, cycloaliphatic, araliphatic or aromatic radical and n is 0 or 1, and where the rings A, B and C may be substituted an... | 11/04/1980 |
