Dye Containing -cooh Patents (Class 8/673)
  • Patent number: 5814107
    Abstract: 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: Grant
    Filed: February 21, 1997
    Date of Patent: September 29, 1998
    Assignee: BASF Corporation
    Inventors: Dean R. Gadoury, Bobby J. Bailey
  • Patent number: 5662716
    Abstract: 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: Grant
    Filed: May 28, 1996
    Date of Patent: September 2, 1997
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Yanhui Sun
  • Patent number: 5651794
    Abstract: 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: Grant
    Filed: October 15, 1993
    Date of Patent: July 29, 1997
    Assignee: Courtaulds Plc
    Inventor: James Martin Taylor
  • Patent number: 5626632
    Abstract: 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: Grant
    Filed: June 6, 1995
    Date of Patent: May 6, 1997
    Assignee: Ronile, Inc.
    Inventor: Geoffrey Boyes
  • Patent number: 5597387
    Abstract: 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: Grant
    Filed: November 9, 1995
    Date of Patent: January 28, 1997
    Assignee: Hoechst AG
    Inventors: Wolfgang Bauer, Dieter Baumgart, Walter Zoller
  • Patent number: 5571290
    Abstract: 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: Grant
    Filed: September 25, 1995
    Date of Patent: November 5, 1996
    Assignee: Burlington Industries, Inc.
    Inventor: William G. Jenkins
  • Patent number: 5565007
    Abstract: 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: Grant
    Filed: May 15, 1995
    Date of Patent: October 15, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Andreas Schrell, Werner H. Russ, Bernd Huber
  • Patent number: 5545725
    Abstract: 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: Grant
    Filed: November 10, 1994
    Date of Patent: August 13, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Adolf K aser, Willy Stingelin
  • Patent number: 5536819
    Abstract: 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: Grant
    Filed: May 20, 1994
    Date of Patent: July 16, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yuriko Tamura, Kazuya Ogino, Mahito Fujita, Takashi Omura, Hideo Kawashita, Koji Aburada
  • Patent number: 5536277
    Abstract: 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: Grant
    Filed: December 22, 1994
    Date of Patent: July 16, 1996
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Mitsuo Shimode, Nobuaki Kawamura, Shinichi Yabushita, Shuhei Hashizume
  • Patent number: 5474580
    Abstract: 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: Grant
    Filed: November 29, 1993
    Date of Patent: December 12, 1995
    Assignee: Zeneca Limited
    Inventors: Andrew H. M. Renfrew, Andrew P. Shawcross
  • Patent number: 5466265
    Abstract: 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: Grant
    Filed: May 13, 1994
    Date of Patent: November 14, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Riegels, Joachim Grutze
  • Patent number: 5466527
    Abstract: 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: Grant
    Filed: November 3, 1994
    Date of Patent: November 14, 1995
    Assignee: Burlington Industries
    Inventor: William G. Jenkins
  • Patent number: 5460630
    Abstract: 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: Grant
    Filed: July 21, 1994
    Date of Patent: October 24, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Philippe Ouziel, Martin Kuhn
  • Patent number: 5445654
    Abstract: 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: Grant
    Filed: November 24, 1993
    Date of Patent: August 29, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Kurt Hussong, Werner H. Russ, Karl Krieger
  • Patent number: 5427589
    Abstract: 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: Grant
    Filed: March 3, 1993
    Date of Patent: June 27, 1995
    Assignee: Springs Industries, Inc.
    Inventors: John R. Holsten, Moses Smith, Jr.
  • Patent number: 5417724
    Abstract: 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: Grant
    Filed: May 17, 1993
    Date of Patent: May 23, 1995
    Assignees: Joseph A. Pacifici, Daniel G. Sims
    Inventors: Joseph A. Pacifici, Daniel G. Sims
  • Patent number: 5360472
    Abstract: 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: Grant
    Filed: July 26, 1993
    Date of Patent: November 1, 1994
    Assignee: Xerox Corporation
    Inventors: Edward J. Radigan, Jr., Louis V. Isganitis, Warren E. Solodar, Kurt B. Gundlach
  • Patent number: 5342417
    Abstract: 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: Grant
    Filed: December 16, 1992
    Date of Patent: August 30, 1994
    Inventors: Joseph A. Pacifici, Daniel G. Sims
  • Patent number: 5324330
    Abstract: 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: Grant
    Filed: December 10, 1992
    Date of Patent: June 28, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Schaulin, Urs Lauk
  • Patent number: 5320647
    Abstract: 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: Grant
    Filed: August 14, 1992
    Date of Patent: June 14, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Henning, Georg Zeidler, Ortwin Schaffer
  • Patent number: 5250107
    Abstract: 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: Grant
    Filed: July 31, 1991
    Date of Patent: October 5, 1993
    Assignee: Hewlett-Packard Company
    Inventor: Steven J. Bares
  • Patent number: 5205838
    Abstract: 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: Grant
    Filed: January 24, 1992
    Date of Patent: April 27, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Dyllick-Brenzinger, Heinz Hartmann, Helmut Bellaire, Georg Zeidler
  • Patent number: 5203912
    Abstract: 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: Grant
    Filed: June 24, 1991
    Date of Patent: April 20, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: David Greenwood, Nigel Hughes, Ronald W. Kenyon, Suraj L. Hindagolla
  • Patent number: 5187207
    Abstract: A hydrophilic contact lens is disclsoed incorporating melanin that protects the eye from harmful radiation and superoxide.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: February 16, 1993
    Assignee: Photoprotective Technologies, Inc.
    Inventor: James M. Gallas
  • Patent number: 5176745
    Abstract: 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: Grant
    Filed: December 11, 1991
    Date of Patent: January 5, 1993
    Assignee: Milliken Research Corporation
    Inventors: Patrick D. Moore, Clifford R. King, Raj Batlaw
  • Patent number: 5139530
    Abstract: 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: Grant
    Filed: January 24, 1991
    Date of Patent: August 18, 1992
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Eugene J. Blanchard, Robert M. Reinhardt
  • Patent number: 5116884
    Abstract: A hydrophilic contact lens is disclosed incorporating melanin that protects the eye from harmful radiation and superoxide.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: May 26, 1992
    Assignee: Photoprotective Technology Incorporated
    Inventor: James M. Gallas
  • Patent number: 5112883
    Abstract: The present invention is directed to a medium incorporating melanin for radiation protection.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: May 12, 1992
    Assignee: Photoprotective Technologies Incorporated
    Inventor: James M. Gallas
  • Patent number: 5047447
    Abstract: The present invention is directed to a medium incorporating melanin for radiation protection.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: September 10, 1991
    Assignee: Photoprotecive Technologies Incorporated
    Inventor: James M. Gallas
  • Patent number: 5036115
    Abstract: 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: Grant
    Filed: March 19, 1990
    Date of Patent: July 30, 1991
    Assignee: Photoprotective Technologies, Inc.
    Inventor: James M. Gallas
  • Patent number: 5030244
    Abstract: 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: Grant
    Filed: June 2, 1989
    Date of Patent: July 9, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Konrad Neumann, Angelika Hayer, Wolfgang Rehmann, Horst O. Brucker
  • Patent number: 4988365
    Abstract: 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: Grant
    Filed: September 14, 1989
    Date of Patent: January 29, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Sternberger, Karl-Heinz Keil
  • Patent number: 4894065
    Abstract: 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: Grant
    Filed: March 3, 1988
    Date of Patent: January 16, 1990
    Assignee: Sandoz Ltd.
    Inventors: Oskar Annen, Wolfgang Beck, Josef Frauenknecht
  • Patent number: 4891047
    Abstract: A process for dyeing fibers. Fibers are dyed in a dye liquor containing granules of silica gel.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: January 2, 1990
    Assignee: Director-General of the Sericultural Experiment station, Ministry of Agriculture, Forestry and Fisheries of Japan
    Inventors: Hrioshi Kato, Keiichi Komatsu
  • Patent number: 4881942
    Abstract: 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: Grant
    Filed: July 7, 1988
    Date of Patent: November 21, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventor: Herbert G. Connor
  • Patent number: 4813972
    Abstract: 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: Grant
    Filed: October 7, 1987
    Date of Patent: March 21, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans U. Schutz, Ulrich Schlesinger, Gerhard Back
  • Patent number: 4780106
    Abstract: 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: Grant
    Filed: June 10, 1987
    Date of Patent: October 25, 1988
    Assignee: Sandoz Ltd.
    Inventors: Helmut Moser, Manfred Greve, Reinhard Pedrazzi, Roland Wald
  • Patent number: 4699628
    Abstract: 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: Grant
    Filed: August 12, 1986
    Date of Patent: October 13, 1987
    Assignee: The Atul Products Limited
    Inventors: Nagajibhai T. Patel, Subrao S. Kulkarni, Garish I. Bhatt
  • Patent number: 4687489
    Abstract: Stabilized staining solutions containing dyestuffs and stabilizers, which contain dimethylammonium sulfate as a stabilizer.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: August 18, 1987
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Erwin Rieke, Renate Kaschek
  • Patent number: 4634448
    Abstract: 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: Grant
    Filed: August 8, 1985
    Date of Patent: January 6, 1987
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Syohei Ajioka, Toshio Tanaka
  • Patent number: 4615837
    Abstract: 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: Grant
    Filed: November 16, 1981
    Date of Patent: October 7, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Heinz Abel, Paul Schafer
  • Patent number: 4594075
    Abstract: 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: Grant
    Filed: January 22, 1985
    Date of Patent: June 10, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Ernst Schenkenberger
  • Patent number: 4581036
    Abstract: 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: Grant
    Filed: April 4, 1985
    Date of Patent: April 8, 1986
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Konrad Opitz, Heinrich Pohlmann, Manfred Sittig, Christian Fabel, Siegfried Wilhelm, Franz Mitter
  • Patent number: 4453945
    Abstract: 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: Grant
    Filed: April 19, 1983
    Date of Patent: June 12, 1984
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masakatsu Miyamoto, Yoshiharu Suzuki, Masayoshi Ojima, Yutaka Iizuka, Ryuzo Orita, Tadashi Matsuo
  • Patent number: 4374064
    Abstract: 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: Grant
    Filed: April 28, 1980
    Date of Patent: February 15, 1983
    Assignee: Sandoz Ltd.
    Inventor: Heinz Wicki
  • Patent number: 4348204
    Abstract: 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: Grant
    Filed: April 1, 1981
    Date of Patent: September 7, 1982
    Assignee: Cassella Aktiengesellschaft
    Inventors: Wolfgang Bauer, Heinz Dickmanns, Konstantin Morgenroth, Kuno Reh, Joachim Ribka
  • Patent number: 4273555
    Abstract: 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: Grant
    Filed: September 7, 1979
    Date of Patent: June 16, 1981
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yasushi Yamada, Hiroshi Ozawa, Masae Gomi, Hideshiro Nomura
  • Patent number: 4260391
    Abstract: 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: Grant
    Filed: March 1, 1979
    Date of Patent: April 7, 1981
    Assignee: Ciba-Geigy Corporation
    Inventor: Roger Lacroix