Dye Containing -cooh Patents (Class 8/673)
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Patent number: 5814107Abstract: A process for preparing photochemically stable dyed nylon compositions includes providing to a dyebath a shaped article of poly(epsilon-caprolactam) hydrolytically polymerized in the presence of water, a carboxylic acid chain regulator and a hindered piperidine derivative; and in the dyebath, dyeing the shaped article with one or more metalized or nonmetalized acid dyestuffs.Type: GrantFiled: February 21, 1997Date of Patent: September 29, 1998Assignee: BASF CorporationInventors: Dean R. Gadoury, Bobby J. Bailey
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Patent number: 5662716Abstract: This invention relates to an improved process for dyeing cationic-dyeable polyamide fibers, especially carpet fibers, with an acid dye to provide stain-resistant fibers. The polyamide fibers contain cationically dyeable sulfonate groups along the polymer chain. The improvement involves adding certain water-soluble salts to a dyebath at a concentration of at least 20% based on the weight of fiber.Type: GrantFiled: May 28, 1996Date of Patent: September 2, 1997Assignee: E. I. du Pont de Nemours and CompanyInventor: Yanhui Sun
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Patent number: 5651794Abstract: Dyed cellulosic regenerated elongate members such as fibers are produced by dyeing the regenerated members with a cationic direct dye after formation but before first drying. A method of producing the dyed elongate members comprises forming a dope containing cellulose or a cellulose compound in solution in a solvent, extruding the dope through at least one orifice into a bath containing water to form an elongate extrudate from which solvent is dissolved and/or the cellulose compound is converted to cellulose so as to form the elongate member, dyeing the formed but never dried elongate member with a cationic direct dye and optionally also with an anionic direct dye and then drying for the first time the dyed elongate member.Type: GrantFiled: October 15, 1993Date of Patent: July 29, 1997Assignee: Courtaulds PlcInventor: James Martin Taylor
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Patent number: 5626632Abstract: A continuous dyeing, space dyeing or printing process for dyeing cationic dyeable polyamide fibers comprising the steps of applying a premetalized acid or acid dye to the fiber at a pH of 2.5 and below, and the dyed polyamide fiber resulting therefrom. The dyeing process generates cationic dyeable polyamide fiber dyed or printed in light to deep shades without bleeding and without producing badly contaminated dye water effluent.Type: GrantFiled: June 6, 1995Date of Patent: May 6, 1997Assignee: Ronile, Inc.Inventor: Geoffrey Boyes
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Patent number: 5597387Abstract: The present invention relates to water-soluble polyazo dyestuffs of the general formula I ##STR1## wherein Y, Z, m and M.sup..sym.1 to M.sup..sym.4 are as defined in claim 1, processes for dyeing leather and paper with the polyazo dyestuffs, and recording liquids and inks containing the polyazo dyestuffs.Type: GrantFiled: November 9, 1995Date of Patent: January 28, 1997Assignee: Hoechst AGInventors: Wolfgang Bauer, Dieter Baumgart, Walter Zoller
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Patent number: 5571290Abstract: Stain-resistant nylon, especially cationic-dyeable carpet nylon, is prepared by dyeing and/or printing cationic-dyeable nylon fibers with acid or premetallized dye. Lightfastness and depth of shade of an apparent value equal to acid dyeable nylons is obtained with superior stain resistance equal to commercially available solution dyed nylon carpeting.Type: GrantFiled: September 25, 1995Date of Patent: November 5, 1996Assignee: Burlington Industries, Inc.Inventor: William G. Jenkins
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Patent number: 5565007Abstract: Modified rayon is produced by adding a modifier to a cellulose solution and spinning fibers from the solution, or by adding a modifier to an alkali cellulose solution or material, xanthating and spinning fibers by the viscose spinning process, wherein the modifier is an amine of the formula (1a), (1b), (1c), (1d) or (1e) ##STR1## The modified rayon produced in this way can be dyed with reactive dyes without addition of electrolyte salt or alkali and have significantly more affinity than conventional viscose fibers.Type: GrantFiled: May 15, 1995Date of Patent: October 15, 1996Assignee: Hoechst AktiengesellschaftInventors: Andreas Schrell, Werner H. Russ, Bernd Huber
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Patent number: 5545725Abstract: Disazo dyes are disclosed which are particularly suitable for dyeing paper.Paper is dyed with these dyes in greenish-yellow or yellow to red shades of good fastness properties.Type: GrantFiled: November 10, 1994Date of Patent: August 13, 1996Assignee: Ciba-Geigy CorporationInventors: Adolf K aser, Willy Stingelin
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Patent number: 5536819Abstract: 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 group; K is 1 or 2; and one of m and n is 1 and the other is 0; a method for dyeing fiber materials, paper or leather by using the trisazo compounds and an ink containing the trisazo compounds, and the trisazo compound is excellent in solubility, and good in storage stability and free from clogging of nozzle caused by deposition. The ink using the trisazo compound gives a deep black-colored image excellent in clarity, water-durability and durability to light.Type: GrantFiled: May 20, 1994Date of Patent: July 16, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Yuriko Tamura, Kazuya Ogino, Mahito Fujita, Takashi Omura, Hideo Kawashita, Koji Aburada
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Patent number: 5536277Abstract: A reactive dye composition which contains a dye mixture comprising; at least one reactive dye selected from dyes represented by the following formula (I): ##STR1## in which Q is --SO.sub.2 CH.sub.2 CH.sub.2 Z in which Z is a group splittable by the action of alkali or --SO.sub.2 CH.dbd.CH.sub.2, and M.sup.1 is hydrogen, an alkali metal or an alkaline earth metal, and at least one anthraquinone compound usable as an acid dye; and a process for dyeing or printing a fiber material using the reactive dye composition.Type: GrantFiled: December 22, 1994Date of Patent: July 16, 1996Assignee: Sumitomo Chemical Company, Ltd.Inventors: Mitsuo Shimode, Nobuaki Kawamura, Shinichi Yabushita, Shuhei Hashizume
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Patent number: 5474580Abstract: A process for the coloration of a substrate, especially a textile, comprising the steps of:(a) applying to the substrate a mixture comprising an aqueous solvent and a water-soluble dye comprising molecules which contain a nucleophilic group and an electrophilic group; and(b) heating or basifying or heating and basifying the dye thereby causing molecules of the dye to join together.Also claimed are dyes, polymers and oligomers.Type: GrantFiled: November 29, 1993Date of Patent: December 12, 1995Assignee: Zeneca LimitedInventors: Andrew H. M. Renfrew, Andrew P. Shawcross
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Patent number: 5466265Abstract: Improved dyeings or prints on cellulose, regenerated cellulose and/or mixtures of cellulose with natural or synthetic fiber materials using one or more reactive and/or direct dyes are obtained in the presence of a lithium compound.Type: GrantFiled: May 13, 1994Date of Patent: November 14, 1995Assignee: Bayer AktiengesellschaftInventors: Martin Riegels, Joachim Grutze
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Patent number: 5466527Abstract: Stain-resistant nylon, especially cationic-dyeable carpet nylon, is prepared by dyeing cationic-dyeable nylon fibers with acid or premetallized dye. Lightfastness and depth of shade of an apparent value equal to acid dyeable nylons is obtained with superior stain resistance equal to commercially available solution dyed nylon carpeting.Type: GrantFiled: November 3, 1994Date of Patent: November 14, 1995Assignee: Burlington IndustriesInventor: William G. Jenkins
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Patent number: 5460630Abstract: Described is a process for dyeing fibrous materials made of or containing wool with anionic dyes, which comprises dyeing these materials in the presence of a wool preservative comprising at least one compound of the formulaR--O--CH.sub.2 --CH(OH)--CH.sub.2 --Y (1),where the variables are each as defined in the claims. The process makes available rub-fast level dyeings without deterioration in the quality of the wool.Type: GrantFiled: July 21, 1994Date of Patent: October 24, 1995Assignee: Ciba-Geigy CorporationInventors: Philippe Ouziel, Martin Kuhn
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Patent number: 5445654Abstract: The disclosed black dye mixtures contain 50 to 95% by weight of one or more disazo dyes of the formula (1) and 5 to 50% by weight of one or more monoazo dyes of the formula (2) ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, identical to or different from each other, are each hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy,Y is in each instance independently of the others vinyl, .beta.-chloroethyl, .beta.thiosulfatoethyl or .beta.-sulfatoethyl, andM is hydrogen or an alkali metal.Type: GrantFiled: November 24, 1993Date of Patent: August 29, 1995Assignee: Hoechst AktiengesellschaftInventors: Kurt Hussong, Werner H. Russ, Karl Krieger
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Patent number: 5427589Abstract: A method for dyeing fibrous material is provided. The method includes contacting a fibrous material with a dyebath comprising a mixture of a dye assistant and a dye soluble or dispersed with dye assistant in the dyebath. The dye assistant comprises a salt of a low molecular weight aromatic sulfonic acid, and can include a low molecular weight surfactant. The dye assistant of the present invention can be advantageously utilized for dyeing difficult to dye fibers such as aromatic polyamide fibers, polybenzimidazole fibers and aromatic polyimide fibers.Type: GrantFiled: March 3, 1993Date of Patent: June 27, 1995Assignee: Springs Industries, Inc.Inventors: John R. Holsten, Moses Smith, Jr.
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Patent number: 5417724Abstract: The cold water bleed propensity of acid and premetallized acid dyed cationic dyeable nylon fibers is substantially reduced by treating the fibers with both a nylon fixing agent and a cotton fixing agent. Colorfastness of acid and premetallized acid dyed nylon fibers, other than CD nylon fibers, is also enhanced by treating the fibers with both a cotton fixing agent and a nylon fixing agent.Type: GrantFiled: May 17, 1993Date of Patent: May 23, 1995Assignees: Joseph A. Pacifici, Daniel G. SimsInventors: Joseph A. Pacifici, Daniel G. Sims
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Patent number: 5360472Abstract: Disclosed are dye compositions of the formula ##STR1## wherein Cp and Cp' are each coupler compounds of the formula ##STR2## wherein the --COOH group and the --OH group can be in any position on either ring, provided that in the naphthalene ring system there is present least one hydrogen activated through resonance by the --OH group for an electrophilic aromatic substitution coupling reaction, n represents the number of substituents on the rings and is a number of from 0 to 8, and R represents the substituent groups on the ring, wherein each R is independently selected from the group consisting of hydroxyl groups, alkyl groups, substituted alkyl groups, aryl groups, substituted aryl groups, aryl-alkyl groups, substituted aryl-alkyl groups, halogen atoms, and nitro groups. Also disclosed are aqueous ink compositions containing the dyes, processes for making the dyes, processes for making the inks containing the dyes, and printing processes employing the inks.Type: GrantFiled: July 26, 1993Date of Patent: November 1, 1994Assignee: Xerox CorporationInventors: Edward J. Radigan, Jr., Louis V. Isganitis, Warren E. Solodar, Kurt B. Gundlach
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Patent number: 5342417Abstract: A method for reducing the cold water bleed propensity of acid and premetallized acid dyed cationic dyeable nylon fibers which comprises treating such fibers with sulfonated anionic polymers, useful as nylon fixing agents, and cationic amine based polymers, useful as cotton fixing agents.Type: GrantFiled: December 16, 1992Date of Patent: August 30, 1994Inventors: Joseph A. Pacifici, Daniel G. Sims
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Patent number: 5324330Abstract: Dye mixtures comprising at least one dye of formula ##STR1## and at least one dye of formula ##STR2## wherein the substituents are as defined in claim 1, have good allround fastness properties and are suitable for dyeing cellulosic fibre materials.Type: GrantFiled: December 10, 1992Date of Patent: June 28, 1994Assignee: Ciba-Geigy CorporationInventors: Rudolf Schaulin, Urs Lauk
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Patent number: 5320647Abstract: Fluent dye preparations useful for dyeing leather or wool containa) at least 15% of the weight of the dye preparation of one or more polyazo dyes in salt form which have one or more hydroxysulfonyl and/or carboxyl groups and may be present in the form of a 1:1 or 1:2 metal complex,b) from 2 to 15% of the weight of the dye preparation of a surfactant, andc) water.Type: GrantFiled: August 14, 1992Date of Patent: June 14, 1994Assignee: BASF AktiengesellschaftInventors: Georg Henning, Georg Zeidler, Ortwin Schaffer
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Patent number: 5250107Abstract: A water-fast ink composition and method for making the same. A selected chemical dye having at least one functional group with an extractable hydrogen atom thereon (e.g. --COOH, --NH.sub.2, or --OH) is combined with an ammonium zirconium polymer salt (e.g. ammonium zirconium carbonate, ammonium zirconium acetate, ammonium zirconium sulfate, ammonium zirconium phosphate, and ammonium zirconium oxalate). The resulting mixture preferably contains about 0.01-5.0% by weight ammonium zirconium polymer salt and about 0.5-5.0% by weight chemical dye. Upon dehydration of the mixture, the ammonium zirconium polymer salt and chemical dye form a cross-linked dye complex which is stable and water-fast. The mixture may be dispensed onto a variety of substrates (e.g. paper) using thermal inkjet or other printing systems.Type: GrantFiled: July 31, 1991Date of Patent: October 5, 1993Assignee: Hewlett-Packard CompanyInventor: Steven J. Bares
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Patent number: 5205838Abstract: Liquid dye preparations useful for making color ribbons or ballpoint pen pastes contain at least one dye of the formula ##STR1## where X is hydroxyl, amino or C.sub.1 -C.sub.15 -monoalkylamino, R.sup.1 and R.sup.4 are each a carboxylate group or substituted or unsubstituted C.sub.1 -C.sub.15 -alkoxy, R.sup.2 and R.sup.5 are each hydrogen, nitro or chlorine, and R.sup.3 is hydrogen or C.sub.1 -C.sub.13 -alkyl, plus as solvent at least one product selected from the group consisting of benzyl alcohol, tridecanol, isotridecanol, glycol ethers, olein, dialkyl phthalates, chloroalkanes, alkanes disubstituted by phenyl, dialkylnaphthalenes and partly hydrogenated terphenyl.Type: GrantFiled: January 24, 1992Date of Patent: April 27, 1993Assignee: BASF AktiengesellschaftInventors: Rainer Dyllick-Brenzinger, Heinz Hartmann, Helmut Bellaire, Georg Zeidler
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Patent number: 5203912Abstract: A dye which, in the free acid form, has the formula ##STR1## wherein W is COOHX is selected from H, COOH, SO.sub.3 H, halo, hydroxy, nitro, cyano, C.sub.1-6 -alkyl, C.sub.1-6 -alkoxy and C.sub.1-6 -acylamino;Y is H, COOH or SO.sub.3 H;Z is H, COOH or SO.sub.3 H;R & R.sup.1 are each independently H or C.sub.1-6 -alkyl substituted by 0, 1 or 2 --COOR.sup.2 groups; andR.sup.2 is H or C.sub.1-6 -alkyl;provided that there are at least two COOH groups and that the number of COOH groups is equal to or greater than the number of SO.sub.3 H groups.The dye is adapted for the preparation of inks for use in ink jet printing in which it displays high water-fastness on paper.Type: GrantFiled: June 24, 1991Date of Patent: April 20, 1993Assignee: Imperial Chemical Industries PLCInventors: David Greenwood, Nigel Hughes, Ronald W. Kenyon, Suraj L. Hindagolla
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Patent number: 5187207Abstract: A hydrophilic contact lens is disclsoed incorporating melanin that protects the eye from harmful radiation and superoxide.Type: GrantFiled: December 19, 1989Date of Patent: February 16, 1993Assignee: Photoprotective Technologies, Inc.Inventor: James M. Gallas
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Patent number: 5176745Abstract: An aqueous ink composition is provided having up to 50 wt. % of a colorant of the formula:A--{Y--X--C(O)--R.sub.1 --C(O)O.sup.- }.sub.pwhere A is an organic chromophore; Y is a polyoxyalkylene substituent; X is a radical of a reactive hydroxy, amino or thio group; and R.sub.1 is C.sub.2-30, substituted or unsubstituted alkylene, alkenylene, or phenylenealkylene. A counter ion selected from alkaline metal ions, alkaline earth metal ions, ammonium ions, amine salts, and zinc ammonium complexes is present in approximately stoichiometric proportion or greater relative to the colorant in the ink composition.Type: GrantFiled: December 11, 1991Date of Patent: January 5, 1993Assignee: Milliken Research CorporationInventors: Patrick D. Moore, Clifford R. King, Raj Batlaw
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Patent number: 5139530Abstract: Anionically dyeable smooth-dry crosslinked cellulosic materials are produced by treatment of methylolamide crosslinked cellulosic materials with an alkali swelling agent such as sodium hydroxide prior to dyeing. Attainable color strength is dependent upon both the concentration and the contact time of the alkali swelling agent with the cellulosic material. Types of usable anionic dyes include acid, direct, and reactive dyes. The cellulose-containing material may be in the form of fibers, threads, linters, roving, fabrics, yarns, slivers and paper.Type: GrantFiled: January 24, 1991Date of Patent: August 18, 1992Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Eugene J. Blanchard, Robert M. Reinhardt
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Patent number: 5116884Abstract: A hydrophilic contact lens is disclosed incorporating melanin that protects the eye from harmful radiation and superoxide.Type: GrantFiled: February 16, 1990Date of Patent: May 26, 1992Assignee: Photoprotective Technology IncorporatedInventor: James M. Gallas
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Patent number: 5112883Abstract: The present invention is directed to a medium incorporating melanin for radiation protection.Type: GrantFiled: November 9, 1990Date of Patent: May 12, 1992Assignee: Photoprotective Technologies IncorporatedInventor: James M. Gallas
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Patent number: 5047447Abstract: The present invention is directed to a medium incorporating melanin for radiation protection.Type: GrantFiled: December 20, 1989Date of Patent: September 10, 1991Assignee: Photoprotecive Technologies IncorporatedInventor: James M. Gallas
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Patent number: 5036115Abstract: Melanin is used as the absorbing pigment for radiation protective eyeware. Thus, a melanin-plastic copolymer was formed by adding a catalyst (benzoyl peroxide) to the liquid monomer, diethylene glycol bis allyl carbonate (CR-39), which contained dissolved catechol (a melanin precursor); the solution was heated for one day at 50 degrees celsius and an additional two days at 65 degrees celsius and yielded an optically transparent solid plastic with amber color and with an optical absorption spectrum very close to that associated with melanin.Type: GrantFiled: March 19, 1990Date of Patent: July 30, 1991Assignee: Photoprotective Technologies, Inc.Inventor: James M. Gallas
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Patent number: 5030244Abstract: Process for the preparation of granules by spray-drying of an aqueous suspension having a solids content of greater than/equal to 30% and containing at least one dye, fluorescent brightener or photoactivator and one condensation product from naphthalenesulfonic acid and formaldehyde and, if necessary, further auxiliaries and/or diluents. The spray-drying is carried out at a feed pressure of 50-150 bar, the residual moisture content of the product is less than 4%, and the granules obtained are in particular very pressure resistant and abrasion resistant.Type: GrantFiled: June 2, 1989Date of Patent: July 9, 1991Assignee: Ciba-Geigy CorporationInventors: Konrad Neumann, Angelika Hayer, Wolfgang Rehmann, Horst O. Brucker
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Patent number: 4988365Abstract: A process for the alkali-free dyeing and printing of cellulose fibers by means of reactive dyes, direct dyes, acid dyes, water-soluble sulfur dyes or sulfur vat dyes, which comprises pretreating the textile material to be dyed with a wetting agent and a reaction product of an epihalogenohydrin with ammonia or an amine of the formula ##STR1## in which A is hydrogen, alkyl having 1 to 5 carbon atoms, hydroxyalkyl having 1 to 5 carbon atoms,R is alkyl having 1 to 5 carbon atoms, hydroxyalkyl having 1 to 5 carbon atoms,a group of the formula ##STR2## (n=0 to 5), a group of the formula ##STR3## (X=oxygen or sulfur) (n=0 to 5), or R and A together are ##STR4## subsequently dyeing them by conventional methods, but without alkali, by means of the dyes mentioned, and completing the dyeing by rinsing, soaping and drying.Type: GrantFiled: September 14, 1989Date of Patent: January 29, 1991Assignee: Hoechst AktiengesellschaftInventors: Klaus Sternberger, Karl-Heinz Keil
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Patent number: 4894065Abstract: The invention refers to a mixture of anionic dyestuffs having a skitteriness value at pH5 of 3-4 and a combinability value at pH5 of 4-5 and to a process for dyeing a fibre material comprising wool with such a mixture of dyestuffs. These mixtures of anionic dyestuffs give surface and fibre level dyeings.Type: GrantFiled: March 3, 1988Date of Patent: January 16, 1990Assignee: Sandoz Ltd.Inventors: Oskar Annen, Wolfgang Beck, Josef Frauenknecht
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Patent number: 4891047Abstract: A process for dyeing fibers. Fibers are dyed in a dye liquor containing granules of silica gel.Type: GrantFiled: November 19, 1986Date of Patent: January 2, 1990Assignee: Director-General of the Sericultural Experiment station, Ministry of Agriculture, Forestry and Fisheries of JapanInventors: Hrioshi Kato, Keiichi Komatsu
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Patent number: 4881942Abstract: A process for the coloration of a union of polyester and cellulosic textile materials which comprises applying thereto a liquor or paste containing a disperse dye and a dye containing a cellulose reactive group having a quaternary nitrogen substituent, or the precursors of such a dye, and thereafter heating the textile material at such a temperature and for such a period as to fix the dye on the textile material, characterized in that the pH of the liquor or paste is from 5.8 to 8.0.Type: GrantFiled: July 7, 1988Date of Patent: November 21, 1989Assignee: Imperial Chemical Industries PLCInventor: Herbert G. Connor
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Patent number: 4813972Abstract: The invention relates to chromium complexes of the formula ##STR1## in which A is the radical of a dicyclically metallizable azo or azomethine dye, B is the radical of a potentially at least bidentate bianionic complexible organic compound which contains no azo or azomethine group, L is a colorless monofunctional ligand, X is a fibre-reactive radical, Ka is a cation, K is 0 or 1, m is 1, 2 or 3, n is 1 or 2, and the X radical and the SO.sub.3.sup..crclbar. Ka group are each bonded to the radicals A and B, to a process for preparing the chromium complexes of the formula (1), and to a combined preparation and dyeing process.Type: GrantFiled: October 7, 1987Date of Patent: March 21, 1989Assignee: Ciba-Geigy CorporationInventors: Hans U. Schutz, Ulrich Schlesinger, Gerhard Back
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Patent number: 4780106Abstract: Metal-free compounds of the formula ##STR1## 1:1 and 1:2 metal complexes thereof, and acid addition salts of metal-free compounds of said formula and 1:1 and 1:2 metal complexes thereof, whereinB is hydrogen; C.sub.1-4 alkyl; C.sub.1-4 alkyl monosubstituted by C.sub.1-4 alkoxy; C.sub.2-4 alkyl substituted by hydroxy; C.sub.5-6 cycloalkyl; C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) the phenyl group of which is substituted by 1 to 3 substituents selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy and halo; --A--NH--R.sub.2 ; --A'.sub.4 --N(R.sub.7).sub.2 ; --A.sub.4 --N.sup..sym. (R.sub.8).sub.2 R.sub.9 A.sup..crclbar. or --N(R.sub.7).sub.2,R is hydrogen; C.sub.1-4 alkyl; C.sub.5-6 cycloalkyl; C.sub.5-6 cycloalkyl substituted by 1 or 2 C.sub.Type: GrantFiled: June 10, 1987Date of Patent: October 25, 1988Assignee: Sandoz Ltd.Inventors: Helmut Moser, Manfred Greve, Reinhard Pedrazzi, Roland Wald
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Patent number: 4699628Abstract: A process for the preparation of a water soluble direct green polyazo dyestuffs mixture in situ comprising phosgenation of a mordant yellow dye and an acid green dye using phosgene gas in an aqueous alkaline medium at a temperature between 50.degree. C. to 80.degree. C. and isolating or recovering the dyestuffs mixture from the phosgenation reaction mass and water soluble direct green polyazo dyestuffs mixture obtained thereby.Type: GrantFiled: August 12, 1986Date of Patent: October 13, 1987Assignee: The Atul Products LimitedInventors: Nagajibhai T. Patel, Subrao S. Kulkarni, Garish I. Bhatt
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Patent number: 4687489Abstract: Stabilized staining solutions containing dyestuffs and stabilizers, which contain dimethylammonium sulfate as a stabilizer.Type: GrantFiled: September 22, 1986Date of Patent: August 18, 1987Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Erwin Rieke, Renate Kaschek
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Patent number: 4634448Abstract: Disclosed herein is a method for dyeing of natural leathers by using a reactive dyestuff having at least one S-triazinyl group to which a substituent group having a quaternary nitrogen atom is bonded via the quaternary nitrogen atom without using any acid-binder, any substance releasing the acid-binder or any inorganic electrolyte, thereby obtaining the dyed natural leathers excellent in light fastness, alkaline-sweat and wet fastness.Type: GrantFiled: August 8, 1985Date of Patent: January 6, 1987Assignee: Nippon Kayaku Kabushiki KaishaInventors: Syohei Ajioka, Toshio Tanaka
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Patent number: 4615837Abstract: A propylene oxide polyadduct containing carboxyl groups, or a salt thereof, obtained from(a) an adduct of propylene oxide and an aliphatic alcohol having 3 to 10 carbon atoms which is at least trihydric,(b) an aliphatic dicarboxylic acid or the anhydride thereof having 2 to 10 carbon atoms or a mono- or di-lower alkylester of said dicarboxylic acids,(c) an aliphatic diol having an average molecular weight of at most 2,000,(d) a fatty acid having 8 to 22 carbon atoms and(e) an aromatic dicarboxylic acid or the anhydride thereof having 8 to 12 carbon atoms; it is in particular useful as dyeing assistant for the dyeing of fibrous material made of or containing wool with anionic dyes.Type: GrantFiled: November 16, 1981Date of Patent: October 7, 1986Assignee: Ciba-Geigy CorporationInventors: Heinz Abel, Paul Schafer
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Patent number: 4594075Abstract: A process is described for spray-drying readily water-soluble dyes and fluorescent brighteners from a saturated aqueous solution which contains undissolved dye or fluorescent brightener in a ratio between dissolved and undissolved matter of 1:9 to 9:1.The free-flowing dye or brightener granulates obtained in this process are distinguished by high bulk density, abrasion resistance and dimensional stability.Type: GrantFiled: January 22, 1985Date of Patent: June 10, 1986Assignee: Ciba-Geigy CorporationInventor: Ernst Schenkenberger
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Patent number: 4581036Abstract: A process is described for separating sodium sulfate from aqueous solutions of certain fiber-reactive dyestuffs, which contain less than 2% by weight of chloride, by cooling down said solution to a temperature between +5.degree. C. and -15.degree. C. In the course of the cooling, the sodium sulfate precipitates in the form of the decahydrate and can be separated off in conventional manner, for example by filtration. The results obtained in this way are aqueous liquid low-salt preparations of these dyestuffs which contain less than 4% by weight of sodium sulfate.Type: GrantFiled: April 4, 1985Date of Patent: April 8, 1986Assignee: Hoechst AktiengesellschaftInventors: Konrad Opitz, Heinrich Pohlmann, Manfred Sittig, Christian Fabel, Siegfried Wilhelm, Franz Mitter
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Patent number: 4453945Abstract: The present invention relates to a process for dyeing cellulose fibers or its union fibers which is effected according to an exhaustion dyeing method using a reactive dye containing at least one s-triazinyl group having a group of the formula: ##STR1## wherein M represents a hydrogen or an alkali metal, in an aqueous dyeing bath having a pH in the range of 4 to 10 and a dyeing temperature in the range of 110.degree. C. to below 140.degree. C.Type: GrantFiled: April 19, 1983Date of Patent: June 12, 1984Assignee: Nippon Kayaku Kabushiki KaishaInventors: Masakatsu Miyamoto, Yoshiharu Suzuki, Masayoshi Ojima, Yutaka Iizuka, Ryuzo Orita, Tadashi Matsuo
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Patent number: 4374064Abstract: Compounds of the formula ##STR1## in which A--X-- is the radical of a diazo component,X-- is ortho to the azo group and is a metallizable substituent or a substituent convertible to a metallizable group,Y is --OH or --NH.sub.2,Z is methyl or carboxy,R is hydrogen, halogen, methyl or sulpho,andB is the radical of a coupling component of the heterocyclic, acyclic active methylene or monocyclic benzene series, which coupling component of the monocyclic benzene series contains an amino and/or hydroxy group which groups may be alkylated or acylated, and--N.dbd.N--B is bound to the 3- or 4-position of ring D,which compounds contain at least one water-solubilizing group,and metal complexes thereof, with the proviso that when the compounds are unmetallized, B is other than amonocyclic benzene coupling component radical. The metal complexes are useful as dyes for the dyeing and printing of anionic dyeable.Type: GrantFiled: April 28, 1980Date of Patent: February 15, 1983Assignee: Sandoz Ltd.Inventor: Heinz Wicki
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Patent number: 4348204Abstract: The aqueous dyestuff formulation of an tetrakisazo direct dyestuff which is stable to alkali and contains at least one aromatic hydroxyl group and/or enol group and at least one group conferring solubility in water, or a mixture of such azo direct dyestuffs, is characterized in that it has a pH value equal to or greater than 12 and is prepared by mixing an azo direct dyestuff which is stable to alkali, water and a tertiary alkali metal phosphate and/or alkali metal metasilicate and/or alkali metal hydroxide, and by choosing the proportions such that the dyestuff formulation contains 5 to 50% by weight of dyestuff and has a pH value equal to or greater than 12. The dyestuff formulation is used, after dilution with water, for dyeing and printing natural or synthetic materials containing hydroxyl groups.Type: GrantFiled: April 1, 1981Date of Patent: September 7, 1982Assignee: Cassella AktiengesellschaftInventors: Wolfgang Bauer, Heinz Dickmanns, Konstantin Morgenroth, Kuno Reh, Joachim Ribka
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Patent number: 4273555Abstract: An azo compound which in the free acid form is represented by the following formula: ##STR1## where R.sub.1 stands for methyl, ethyl, R.sub.2 stands for hydrogen, methyl, methoxy or ethoxy, R.sub.3 stands for hydrogen or methyl, and K stands for ##STR2## wherein the benzene nucleus A may be further substituted by methyl, amino, acetylamino or methoxy or: ##STR3## wherein these naphthalene neuclei may be further substituted by hydroxy, amino or acetylamino, also a process for preparing the azo compound and a dyeing method using said azo compound.Type: GrantFiled: September 7, 1979Date of Patent: June 16, 1981Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yasushi Yamada, Hiroshi Ozawa, Masae Gomi, Hideshiro Nomura
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Patent number: 4260391Abstract: There is described a stable concentrated solution of a dye of the disazo class, which solution contains 15 to 30 percent by weight of the dye of the formula ##STR1## in the form of the lithium salt, optionally in admixture with up to 75 percent by weight of the sodium, potassium or ammonium salt, dissolved in 5 to 35 percent by weight of water, 2 to 10 percent by weight of pyrrolidone or of N-alkyl-(C.sub.1 -C.sub.4)-pyrrolidone and 35 to 50 percent by weight of a diethylene glycol monoalkyl ether; a process for producing this liquid preparation, and its use for dyeing and printing cellulose and regenerated cellulose, particularly however for dyeing paper.Type: GrantFiled: March 1, 1979Date of Patent: April 7, 1981Assignee: Ciba-Geigy CorporationInventor: Roger Lacroix