Leather Dyeing Patents (Class 8/436)
-
Patent number: 5972048Abstract: Fiber-reactive triphendioxazine dyes, preparation thereof and use thereof Novel triphenoxazine dyes of the formula (1) ##STR1## where M is hydrogen or an alkali metal, m and n are each 1 or 2 and Y is 2,4,6-trifluoropyrimidinyl or a radical of the formula (3) ##STR2## where Z is fluorine, --NH.sub.2, C.sub.1 -C.sub.4 -alkylamino which may be hydroxy- or sulfo-substituted, N,N-di(C.sub.1 -C.sub.4 -alkyl)amino which may be hydroxy- or sulfo-substituted, phenylamino which may be C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy-, halogen-, hydroxy-, ureido-, acetylamino-, carboxy-, sulfo- or sulfomethyl-substituted, N-(C.sub.1 -C.sub.4 -alkyl)-N-phenylamino, sulfonaphthylamino, cyanoamino or N-morpholino, are notable for high color strengths, high brilliance and high fastnesses.Type: GrantFiled: May 27, 1998Date of Patent: October 26, 1999Assignee: DyStar Textilfarben GmbH & Co. Deutschland KGInventors: Uwe Reiher, Hans-Walter Stein
-
Patent number: 5964899Abstract: Azo dyes containing sulphur dye entities as a constitutional component are dyes of valuable properties, in particular for the dyeing of leather.Type: GrantFiled: October 8, 1997Date of Patent: October 12, 1999Assignee: Clariant Finance (BVI) LimitedInventors: Jordi Berenguer, Manuel Jose Domingo, Jose Rocas
-
Patent number: 5961669Abstract: A process for dying materials containing natural or synthetic polyamides is disclosed. The process includes immersing the materials to be dyed in a dye bath containing an acid dye. The pH of the dye bath is initially at a level that substantially inhibits the dye from being absorbed by the polymer. In accordance with the present invention, however, an acid producing composition is added to the bath which gradually reduces the pH of the bath and allows for uniform diffusion of the dye into the polymer. The acid producing composition of the present invention is a maleate ester, which, in one embodiment, is the reaction product of maleic acid or maleic anhydride and a glycol.Type: GrantFiled: March 12, 1998Date of Patent: October 5, 1999Assignee: Sybron Chemicals, Inc.Inventors: Robert B. Login, Calvin McIntosh Wicker, Jr., Otto Bella
-
Patent number: 5948122Abstract: The present invention relates to methods for dyeing a material, comprising (a) treating the material with a dyeing system which comprises one or more reduced vat dyes and/or one or more reduced sulfur dyes; and (b) oxidizing the one or more reduced vat dyes or one or more reduced sulfur dyes adsorbed onto the treated material with an oxidation system comprising (i) an oxygen source and one or more enzymes exhibiting oxidase activity or (ii) a hydrogen peroxide source and one or more enzymes exhibiting peroxidase activity, to convert the one or more reduced dyes to their original oxidized insoluble colored forms; wherein the material is a fabric, yarn, fiber, garment or film made of cotton, diacetate, flax, fur, hide, leather, linen, lyocel, polyacrylic, polyamide, polyester, ramie, rayon, silk, tencel, triacetate, viscose or wool.Type: GrantFiled: November 24, 1998Date of Patent: September 7, 1999Assignees: Novo Nordisk Biotech, Inc., Novo Nordisk BioChem North America Inc., Novo Nordisk A/SInventors: Feng Xu, Sonja Irene Salmon
-
Patent number: 5948123Abstract: A coloring method, wherein coloring agent or pigment is injected into active cells of an animal hide before the hide is harvested, and a coloring agent injection device with one or more needles, which are injected into the active cells of the hide of an animal whose hide is to be harvested. The coloring agent becomes fixed in the active cells of the hide, which ingest and spread said coloring agent.Type: GrantFiled: April 22, 1998Date of Patent: September 7, 1999Assignee: Retug, Inc.Inventors: Junichi Hirata, Hiroko Hasegawa
-
Patent number: 5910623Abstract: Liquid or solid mixtures of low-salt sulfo-containing 1:2 metal complex dyes and poly-N-vinylpyrrolidone or copolymers of N-vinylpyrrolidone and vinyl acetate are especially useful for dyeing paper and wood and also for dyeing and finishing leather and fur.Type: GrantFiled: August 13, 1997Date of Patent: June 8, 1999Assignee: BASF AktiengesellschaftInventors: Knut Kessel, Manfred Patsch, Manfred Herrmann, Kurt Reiner, Jorg Jessen, Matthias Wiesenfeldt
-
Patent number: 5908474Abstract: The present invention provides a dye-fixing agent, obtainable by reacting in a first reaction step, either a homopolymer of diallylamine or N-methyl-diallylamine or a copolymer of diallylamine and N-methyl-diallylamine, with an epihalohydrin, the reaction optionally taking place in the presence of an aliphatic amine or polyamine, or reacting the homopolymer or copolymer with a product obtainable by a reaction of epihalohydrin with an aliphatic amine or polyamine, optionally followed by partial quaternization of the reaction product of the first reaction step, characterized in that the end product possesses at least 10 mol % of tertiary amino groups of the following formula (I), based on the total number of amino groups ##STR1## wherein X=halogen, with the provisos that when the homopolymer is an N-methyl-diallylamine, the presence of an aliphatic amine or a polyamine is obligatory in the reaction with the epihalohydrin and when the homopolymer is a homopolymer of diallylamine, partial quaternisation of the reType: GrantFiled: September 15, 1997Date of Patent: June 1, 1999Assignee: Clariant Finance (BVI) LimitedInventors: Bernard Danner, Jurg Heller
-
Patent number: 5873910Abstract: A process for the two-stage oxidation dyeing of keratin fibers by applying to the keratin fibers:in a first stage, at least one composition A containing at least one manganese salt and/or a manganese complex,in a second stage, at least one composition B having a pH of greater than or equal to 6, and resulting from the extemporaneous mixing of at least one composition B1 containing at least one 4-substituted 1-naphthol and at least one composition B2 containing at least one oxidizing agent, and corresponding multi-compartment dyeing kit.Type: GrantFiled: December 19, 1997Date of Patent: February 23, 1999Assignee: L'OrealInventors: Jean-Christophe Henrion, Herve Andrean
-
Patent number: 5869731Abstract: There has been found1) a method for reducing the toxicity of spent liquors from dyeing with cationic dyes or mixtures thereof, characterized by the step of dyeing with cationic dyes having a computed electrostatic shielding energy (idealized hydration energy) of .gtoreq.50 kcal/mol,2) cationic, generally low toxicity dyes, their preparation and use for dyeing.Type: GrantFiled: September 25, 1997Date of Patent: February 9, 1999Assignee: Bayer AktiengesellschaftInventors: Henry Giera, Felix Reichel, Horst Berneth
-
Patent number: 5785718Abstract: The novel and known stilbene-azo dyestuffs of the formula (I) ##STR1## in which the substituents X and Y have the meaning given in the description, are outstandingly suitable for dyeing and printing cellulose and/or material containing amide groups and for the preparation of inks.Type: GrantFiled: May 27, 1997Date of Patent: July 28, 1998Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Uwe Claussen
-
Patent number: 5766269Abstract: A cationic dye (S.sub.K) comprising at least one quaternary ammonium group or protonated or protonizable tertiary amino group and at least one chromophoric radical, wherein the chromophoric radical is the radical of an optionally (pre)reduced sulphur dye, its precursor (S.sub.K1) containing a cationic group which is a secondary amino group of basic character, which is optionally protonated but does not contain an acid group in a substituent of this cationic group, or a mixture thereof and desolubilized derivatives thereof or of their non-quaternized and non-tertiary precursors, which in standardized form are usable as pigments.Type: GrantFiled: March 11, 1996Date of Patent: June 16, 1998Assignee: Clariant Finance (BVI) LimitedInventors: Jordi Berenguer, Manuel Jose Domingo, Jose Rocas
-
Patent number: 5749925Abstract: 4,5-Dihydro-1H-1,2,3-triazolium compounds of the formula (I) ##STR1## in which R.sup.1 and R.sup.2 independently of one another denote C.sub.6 -C.sub.14 -aryl or a heterocyclic radical having up to 3 rings and up to 4 heteroatoms from the series consisting of O, S and N,R.sup.3 and R.sup.4 independently of one another denote hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.2 -C.sub.12 -alkenyl, C.sub.4 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.17 -aralkyl, C.sub.6 -C.sub.14 -aryl or nitrile orR.sup.3 and R.sup.4 together denote a 2- to 5-membered C bridge, which can optionally be interrupted by up to two oxygen and/or nitrogen atoms, andX.sup.- denotes an anion,wherein all the alkyl, alkenyl, cycloalkyl, aralkyl and aryl radicals and fused and heterocyclic radicals present can optionally be substituted by nonionic substituents, carboxyl groups, ammonium groups and/or pyridinium groups, are used as dyestuffs.New 4,5-dihydro-1H-1,2,3-triazolium compounds correspond to the formula (I), with the provisos that if R.sup.Type: GrantFiled: June 26, 1996Date of Patent: May 12, 1998Assignee: Bayer AktiengesellschaftInventors: Thomas Bocker, Horst Berneth, Henry Giera
-
Patent number: 5725607Abstract: There has been found1) a method for reducing the toxicity of spent liquors from dyeing with cationic dyes or mixtures thereof, characterized by the step of dyeing with cationic dyes having a computed electrostatic shielding energy (idealized hydration energy) of .gtoreq.50 kcal/mol,2) cationic, generally low toxicity dyes, their preparation and use for dyeing.Type: GrantFiled: June 25, 1996Date of Patent: March 10, 1998Assignee: Bayer AktiengesellschaftInventors: Henry Giera, Felix Reichel, Horst Berneth, Thomas Bocker, Karin Hassenruck, Karl Lange, Karlheinrich Meisel
-
Patent number: 5709714Abstract: The present invention is directed to a method of treating tanned leather stock to improve its color expression characteristics. The method provides for utilizing a two-stage amphoteric polymers, which improve the color expression characteristic of the tanned leather stock while still retaining desired grain break and tensile strength. The tanned leather stock is contacted, preferably by immersion, in a float containing particles of an amphoteric polymer dispersed therein and a desired colorant. The amphoteric polymer particles comprise a first stage copolymer polymerized from at least one monomer containing an anionic functionality, such as, an acid functionality, with at least one first stage comonomer and a second stage copolymer polymerized from at least one monomer containing the cationic functionality, such as, an amine functionality, with at least one second stage comonomer.Type: GrantFiled: February 12, 1997Date of Patent: January 20, 1998Assignee: Rohm and Haas CompanyInventors: John Natoli, Anthony Frank Volpe, Jr.
-
Patent number: 5676707Abstract: Provided is a leather treatment process for leather coloring, carried out on a leather to be colored with a liquid ink, the process comprises the steps of, imparting to the coloring surface of the leather a resin soluble in the liquid ink and imparting to the coloring surface an aggregate of particles with a functional group having an affinity for the liquid ink.Type: GrantFiled: September 11, 1996Date of Patent: October 14, 1997Assignee: Canon Kabushiki KaishaInventors: Nobuyuki Kuwabara, Miyuki Fujita
-
Patent number: 5567205Abstract: Wet leather treating compositions and methods of wet treating leather hides employing alkylpolyglycosides for enhancing the penetration and absorption of the leather treatment formulations in an environmentally safe manner. The compositions are substantially free of volatile organic compounds.Type: GrantFiled: June 6, 1995Date of Patent: October 22, 1996Assignee: Henkel Corp.Inventors: Michael W. Counts, John A. Thompson, Jack O. Lavoie, Robert A. Aleksejczyk
-
Patent number: 5498712Abstract: A water-soluble triphenodioxazine dye having a chloro or bromo atom at one of the 6- and 13-positions and a group of Formula (1) at the remaining 6- or 13-position: ##STR1## wherein: R.sup.1 is H, OH or CH.sub.3 ; andR.sup.2 is C.sub.1-3 -alkyl, hydroxy-C.sub.1-3 -alkyl or --CH.sub.2 --(C.sub.1-4 -alkyl).The dyes are useful for the coloration of textile materials.Type: GrantFiled: May 13, 1993Date of Patent: March 12, 1996Assignee: Zeneca LimitedInventor: Gordon A. Thomson
-
Patent number: 5496378Abstract: Basic dyes of the formula ##STR1## where n is from 1 to 3,CuPc is a copper phthalocyanine radical,R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.2 is C.sub.1 -C.sub.4 -alkyl,R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.4 is C.sub.1 -C.sub.4 -alkyl andAn.sup..crclbar. is the equivalent of an anion,with the proviso that R.sup.1 and R.sup.3 are not both hydrogen, are useful for dyeing or printing polymeric material.Type: GrantFiled: September 12, 1994Date of Patent: March 5, 1996Assignee: BASF AktiengesellschaftInventors: Heidi Hengelsberg, Manfred Ruske, Udo Mayer
-
Patent number: 5486213Abstract: Dye mixtures comprising at least two metal-free dyes, one of which contains two to eight sulfo groups and the other three to eight sulfo groups, the mixture comprising at most one dye having two sulfo groups, are used for the dyeing of leather. Preferably, a trichromatic dye mixture comprising at least one yellow dye, at least one red dye and at least one blue dye is used. Leather can be dyed with these dye mixtures in brilliant shades.Type: GrantFiled: June 22, 1993Date of Patent: January 23, 1996Assignee: Ciba-Geigy CorporationInventors: Peter Moser, Campbell T. Page, Alois Puntener
-
Patent number: 5478936Abstract: An asymmetric dioxazine compound represented by the following formula (I) in the free acid form: ##STR1## wherein A.sub.1 and A.sub.2 independently of one another are each sulfo, halo, alkyl or alkoxy, W is an unsubstituted or substituted aliphatic or aromatic bridging group, X.sub.1 and X.sub.2 independently of one another are each hydrogen, halo, alkyl, alkoxy or phenoxy, R.sub.1 and R.sub.2 independently of one another are each hydrogen or unsubstituted or substituted alkyl, R.sub.3 and R.sub.4 independently of one another are each hydrogen, halo, alkyl, alkoxy or unsubstituted or substituted amino, Z is a fiber-reactive group, m and n independently of one another are each 0 or 1, provided that m.noteq.n, and l is 1 or 2.Type: GrantFiled: March 21, 1994Date of Patent: December 26, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Kazufumi Yokogawa, Miyao Takahashi, Takahiko Fuzisaki, Yutaka Kayane, Shigeru Kawabata, Naoki Harada
-
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
-
Patent number: 5468257Abstract: Specific cationic polymers having hydrophobic side chains are highly suitable as binders for pigments for the dyeing of leather.Type: GrantFiled: December 17, 1993Date of Patent: November 21, 1995Assignee: Bayer AktiengesellschaftInventors: Joachim Probst, Fritz Novotny, Harro Traubel, Ludger Heiliger
-
Patent number: 5411556Abstract: There is described a process for dyeing leather with the dye of the formula ##STR1##Type: GrantFiled: October 14, 1993Date of Patent: May 2, 1995Assignee: BASF AktiengesellschaftInventors: Johannes P. Dix, Gunther Lamm, Helmut Reichelt, Georg Zeidler
-
Patent number: 5376147Abstract: Dye mixtures comprising at least two metal-free dyes of different colors having in each case two sulfo or carboxyl groups and a molecular weight of between 790 and 1100 are used for dyeing leather. A trichromatic dye mixture comprising at least one yellow dye of the formula (1), at least one red dye of the formula (2) and at least one blue dye of the formula (3) according to claim 2 is preferably used. Leather can be dyed in brilliant shades using these dye mixtures.Type: GrantFiled: February 26, 1993Date of Patent: December 27, 1994Assignee: Ciba-Geigy CorporationInventors: Campbell Page, Peter Moser, Alois Puntener
-
Patent number: 5354341Abstract: Leather is dyed using dye mixtures comprising at least two metal-free dyes each carrying a single sulfo or carboxyl group and having a molecular weight in the range from 450 to 700.It is preferred to use a trichromatic dyeing formulation comprising at least one yellow dye of formula (1), at least one red dye of formula (2) and at least one blue dye of formula (3) according to claim 2.Leather is dyed in brilliant shades with these dye mixtures.Type: GrantFiled: March 26, 1993Date of Patent: October 11, 1994Assignee: Ciba-Geigy CorporationInventors: Peter Moser, Thomas P. Campbell, Alois Puntener
-
Patent number: 5310906Abstract: The novel triphendioxazine dyestuffs of the formula ##STR1## in which the substituents R, R', T.sub.1, T.sub.2, X, Y and n have the meanings given in the description are highly suitable for the dyeing and printing of cellulose-containing or amido-containing material.Type: GrantFiled: April 26, 1993Date of Patent: May 10, 1994Assignee: Bayer AktiengesellschaftInventor: Horst Jager
-
Patent number: 5306435Abstract: A composition for treating leather, fur and fibrous material which comprises a water-soluble and/or a water-dispersible polyurethane, and more particularly a composition comprising the following ingredients a), b), c) and d) in the following proportions:______________________________________ ingredient a); water-soluble and 5.0-100% by wt. water-dispersible polyurethane ingredient b); salt of divalent to 0.0-20% by wt. tetravalent metal ingredient c); surfactant 0.0-40% by wt. ingredient d); auxiliary ingredients 0.0-40% by wt. ______________________________________Leather and fur treated with the treating agent of the invention can be washed in water. Even when washed in water, they retain flexibility, have an excellent dimensional stability and are enhanced in water absorption into leather fiber. Further, they are improved in tear strength, tensile strength and hand and become easy to sew by means of a domestic sewing machine.Type: GrantFiled: July 14, 1992Date of Patent: April 26, 1994Assignees: Nihon Junyaku Co., Ltd., Alota Co., Ltd.Inventors: Mitsuo Ishikawa, Ikumi Ohnuki, Tomoya Ishiyama, Toshiaki Matsuura
-
Patent number: 5256318Abstract: A tanned leather treated with a fatliquoring agent in combination with a fluorine-containing oil, which has good touch, water resistance, water- and oil-repellency, washing resistance, and which is not discolored or faded by dry cleaning.Type: GrantFiled: April 3, 1991Date of Patent: October 26, 1993Assignee: Daikin Industries Ltd.Inventors: Tetsuya Masutani, Masahiko Maeda, Norio Yanagisawa, Masato Kuroi
-
Patent number: 5250079Abstract: A process for the treatment of fibrous material from aqueous medium in the presence of an application assistant (P) comprising components (a) and (b), in particular for nitrogen-containing substrates; the compositions (P), (P.sub.1) and (P.sub.2) and compositions comprising (P) and anionic dye or optical brightener.Type: GrantFiled: August 7, 1992Date of Patent: October 5, 1993Assignee: Sandoz Ltd.Inventor: Hans-Peter Baumann
-
Patent number: 5250671Abstract: The novel unsymmetrical 1:2 chromium complex dyestuffs of the formula ##STR1## in which the substituents R.sup.1, R.sup.2, R.sup.3, n and Cat.sup.(+) have the meaning given in the description, are highly suitable for the dyeing and printing of natural and synthetic amido-containing materials in predominantly red hues having good light, wet and diffusion fastness properties.Type: GrantFiled: September 8, 1992Date of Patent: October 5, 1993Assignee: Bayer AktiengesellschaftInventor: Winfried Mennicke
-
Patent number: 5240466Abstract: The present invention relates to a process for dyeing leather by the exhaust method, characterized in that water-insoluble sulphur dyes in dispersed form are used.Type: GrantFiled: February 12, 1992Date of Patent: August 31, 1993Assignee: Casella AktiengesellschaftInventors: Wolfgang Bauer, Hubert Kruse, Gert Nagl, Jan-Hilbert Mast, Lothar Schlosser
-
Patent number: 5240463Abstract: The process for dyeing leather by the exhaust method comprises allowing a pigment dispersion and an aqueous solution of sulfur dye to act on the conventionally pretreated leather in one step or in succession. It affords a high depth of shade and a high brilliance which are not achieved by using the pigment or the sulfur dye on its own.Type: GrantFiled: January 29, 1992Date of Patent: August 31, 1993Assignee: Hoechst AktiengesellschaftInventors: Peter Weinheimer, Norbert Ambrecht, Lothar Schlosser
-
Patent number: 5207802Abstract: Compounds and mixtures of compounds obtainable by condensation of sulphonation products of defined alkyl-substituted naphthalenes and sulphonation products of optionally alkyl-substituted diphenylethers with formaldehye and optionally treated with further components, are valuable interface-active compounds suitable as assistants in various application fields, in particular as dispersing or levelling agents in the dyeing with disperse dyes or as tanning-assistants or dyeing-assistants for leather.Type: GrantFiled: August 23, 1990Date of Patent: May 4, 1993Assignee: Sandoz Ltd.Inventor: Hans-Peter Baumann
-
Patent number: 5207801Abstract: The invention relates to reactive dye mixtures comprising the reactive dyes of the formulae ##STR1## in which X.sub.1, X.sub.2 and X.sub.3 are reactive radicals bonded via a diaminoalkylene bridge and the other substituents are as defined in claim 1.The reactive dye mixtures are suitable for dyeing and printing cellulosic fibre materials and give wet- and light-fast dyeings in luminous blue shades.Type: GrantFiled: November 5, 1991Date of Patent: May 4, 1993Assignee: Ciba-Geigy CorporationInventors: Peter Aeschlimann, Paul Herzig, Athanassios Tzikas
-
Patent number: 5200511Abstract: Reactive dyes of the formula ##STR1## where m is 0 or 1,A.sup.1 and A.sup.2 are different and each is a fiber-reactive radical or else, in the case of A.sup.2, hydrogen,D.sup.1 and D.sup.2 are substituted or unsubstituted phenylene, substituted or unsubstituted phenylenemethyl, substituted or unsubstituted naphthylene or substituted or unsubstituted naphthylenemethyl,K.sup.1 and K.sup.2 are each the radical of a coupling component of the aminonaphthalenesulfonic acid series andL is a bridge member,are useful for dyeing and printing hydroxyl- or nitrogen-containing substrates.Type: GrantFiled: March 30, 1992Date of Patent: April 6, 1993Assignee: Basf AktiengesellschaftInventors: Hermann Loeffler, Manfred Patsch
-
Patent number: 5176717Abstract: The use of compounds of the formula ##STR1## in which the symbols are as defined in claim 1, for dyeing leather is described.Type: GrantFiled: July 19, 1991Date of Patent: January 5, 1993Assignee: Ciba-Geigy CorporationInventors: Rudolf Schaulin, Peter Moser, Alois Puntener
-
Patent number: 5160504Abstract: Use of metal complex dyes comprised of metalizable azo compounds to dye metal-tanned leather which makes possible good permeability and excellent color fastness to rubbing and color fastness to light.Type: GrantFiled: October 28, 1991Date of Patent: November 3, 1992Assignee: Orient Chemical Industries, Ltd.Inventors: Takashi Ono, Tatsuya Yagyu, Katsumi Fukuda, Minako Terasaki
-
Patent number: 5152801Abstract: There is disclosed a process for dyeing leather by the exhaust process, which comprises treating leather with an aqueous liquor which contains a formulation comprising a black anionic dye and a sulfonated carbon black. The leather dyeings obtained by this process have good allround fastness properties.Type: GrantFiled: December 5, 1990Date of Patent: October 6, 1992Assignee: Ciba-Geigy CorporationInventors: Hans Altermatt, Alois Puntener, Peter Moser, Ernst Tempel
-
Patent number: 5145484Abstract: The invention relates to a stable, dust-free commercial form comprising at least one water-soluble monoreactive dye which comprises a monofluoro-s-triazine reactive radical, and/or at least one water-soluble polyreactive dye in a polyvinyl alcohol envelope.The dyeings obtained with the stable, dust-free commercial form are distinguished by good general fastness properties.Type: GrantFiled: March 29, 1991Date of Patent: September 8, 1992Assignee: Ciba-Geigy CorporationInventors: Roger Lacroix, Ulrich Strahm
-
Patent number: 5131917Abstract: A reactive dye composition comprising a monoazo compound of the following formula (I) in the free acid form, ##STR1## and at least one member selected from monoazo compounds of the following formulas (II) to (IV) in each free acid form, ##STR2## wherein Z, Z' and Z'" are each --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z.sub.1, --CH.sub.2 CH.sub.2 Z.sub.2 or --CH.sub.2 CH.sub.2 Z.sub.3, respetively, in which Z.sub.1, Z.sub.2 and Z.sub.3 are each a group capable of being split by the action of an alkali, Z" is --CH.dbd.CH.sub.2, and any one of X and Y is sulfo, and the other is hydrogen, exhibits superior dye performance such as solubility, storage stability and build-up property, and is useful for dyeing or printing fiber materials such as cellulose fiber in a red color excellent in various fastness properties.Type: GrantFiled: December 3, 1990Date of Patent: July 21, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Tetsuya Miyamoto, Yutaka Kayane, Sadanobu Kikkawa, Kingo Akahori
-
Patent number: 5126450Abstract: Unsymmetrical triphendioxazine (TPD) reactive dyes of Formula (1) for the colouration of e.g. wool, silk, leather and cotton are claimed as well as intermediates for their manufacture. ##STR1## wherein W.sup.1 and W.sup.2 are different and each independently of the formula: ##STR2## R.sup.1 and R.sup.2 in each group defined by W.sup.1 or W.sup.2 independently represent H or an optionally substituted hydrocarbon radical or are joined together to form, with B and the two N atoms, a piperazine ring;each x independently has a value of 0 or 1;each B independently represents an optionally substituted divalent hydrocarbon radical;each Z independently represents a fibre-reactive group;T.sup.1 and T.sup.2 each independently represents H, Cl, Br, F, SO.sub.3 H or an optionally substituted alkyl or aryl radical;A.sup.1 and A.sup.2 each independently represents an alkyl, alkoxy, Cl, Br, COOH, SO.sub.Type: GrantFiled: November 1, 1990Date of Patent: June 30, 1992Assignee: Imperial Chemical Industries PlcInventor: Peter Smith
-
Patent number: 5114430Abstract: The fibre-reactive formazan dyes of the formula ##STR1## where B is an aliphatic or sulfo-free aromatic bridge member, R is .alpha.,.beta.-dihalopropionyl, .alpha.-haloacryloyl or haloacetyl, T.sub.1 is halogen, X is halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, cyano or nitro, Y is --CO-- or --SO.sub.2 --, Z is nitrogen or --C--T.sub.2, T.sub.2 is halogen, hydrogen, C.sub.1 -C.sub.4 alkylthio, cyano, formyl or C.sub.1 -C.sub.4 alkylsulfonyl, m is 1, 2 or 3, n is 0, 1 or 2, q is 0 or 1, and r and s are each either 0 or 1 but never the same as each other, produce dyeings having good fastness properties on nitrogen-containing or hydroxyl-containing fibre materials.Type: GrantFiled: November 13, 1990Date of Patent: May 19, 1992Assignee: Ciba-Geigy CorporationInventor: Urs Lehmann
-
Patent number: 5103521Abstract: Leather treatment agent containing a mixture a) of a carboxylic acidX--COOH Iwherein X represents--[R--CO--Z--(R'--Z).sub.a ].sub.b --CO--R--COOH 1or--R"--(Z--R').sub.c --Z--CO--R--COOH 2and the symbols have the meaning described in more detail in the description, and b) of a compound containing at least one primary, secondary or tertiary amino group, with a molecular weight of 200-20,000, are used in processes for tanning, pretanning, retanning, dyeing or fat liquoring pelts or pretanned leather or fully tanned leather.Type: GrantFiled: August 11, 1989Date of Patent: April 14, 1992Assignee: Bayer AktiengesellschaftInventors: Harro Traubel, Manfred Dietrich, Hans-Werner Muller, Gunther Held
-
Patent number: 5098446Abstract: Leather manufacturing processes are described in which fluorochemicals are included in the various processing baths to improve efficiency, reduce processing time, and increase the quality of the finished leather product. Various types of fluorochemicals are described for use in the processing techniques.Type: GrantFiled: October 13, 1989Date of Patent: March 24, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: L. M. B. Rodriguez, Claudio M. Martinez
-
Patent number: 5074884Abstract: To improve the affinity of anionic dyestuffs in the dyeing of leather materials, polycondensation products consisting of at least one amine of the formula ##STR1## in which the radicals have the meanings mentioned in the description with one dicarboxylic acid and, if desired, .omega.-aminocarboxylic acid or its lactam are highly suitable.Type: GrantFiled: October 2, 1990Date of Patent: December 24, 1991Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Harro Traubel
-
Patent number: 5048455Abstract: A continuous finishing process for flexible materials using a continuous printing machine of the thousand dot type. A small controlled amount of a finishing product, comprising 90 to 100% of photopolymerizable active material, is deposited at a rate of 5 to 35 g/m.sup.2 per pass in the printing machine. The finishing product is then photopolymerized, and a satining or graining operation is performed. The above stages are repeated until the desired finish is obtained.The finishing product is photopolymerizable under ultraviolet radiation and comprises unsaturated prepolymers, liquid monomers, and photoinitiators.The apparatus comprises at least one module comprising a continuous printing machine, an ultraviolet radiation oven, and a satining or graining machine, these various machines being placed so as to achieve a continuous conveying of pieces to be treated from one machine to the other.Type: GrantFiled: November 17, 1989Date of Patent: September 17, 1991Assignee: Centre Technique Cuir ChaussureInventors: Gerard Gavend, Bernard Vitteau, Bernard Vulliermet
-
Patent number: 5032142Abstract: Trichromatic dye mixtures containing(i) as the orange componentat least one dye of the formula ##STR1## or a salt thereof, or, as the yellow component,at least one dye of the formula ##STR2## or a salt thereof, whereinR.sub.1 is hydrogen or C.sub.1-4 alkyl,R.sub.2 is hydrogen, C.sub.1-4 alkyl or substituted C.sub.1-4 alkyl,each of R.sub.3 and R.sub.4 is independently hydrogen, C.sub.1-6 alkyl or substituted C.sub.1-6 alkyl,R.sub.10 is hydrogen or C.sub.2-3 hydroxyalkyl, andR.sub.11 is C.sub.2-3 hydroxyalkyl or 2-(2'-hydroxyethoxy)ethyl, with the proviso that when R.sub.11 is 2-(2'-hydroxyethoxy)ethyl, R.sub.10 must be hydrogen,(ii) as the red component,at least one dye of the formula ##STR3## or a salt thereof, wherein each of D and D' is independently ##STR4## wherein m is 1 or 2, each R.sub.5 is independently hydrogen or C.sub.1-4 alkyl,each R.sub.6 is independently hydrogen, C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl, andx is linear or branched C.sub.2-6 alkylene, linear or branched C.sub.Type: GrantFiled: December 21, 1989Date of Patent: July 16, 1991Assignee: Sandoz Ltd.Inventors: Walter B. Egger, Ernst Schnider
-
Patent number: 5030243Abstract: There is disclosed a process for the photochemical stabilization of undyed and dyeable artificial leather, which comprises treating said artificial leather in an aqueous liquor which contains a light stabilizer. A composition for carrying out the process is also described.Type: GrantFiled: December 27, 1989Date of Patent: July 9, 1991Assignee: Ciba-Geigy CorporationInventor: Gerhard Reinert
-
Patent number: 5007941Abstract: There is disclosed a process for dyeing leather by the exhaust process, which comprises treating leather with an aqueous liquor which contains a formulation comprising an anionic dye and a pigment. The leather dyeings obtained by this process have good allround fastness properties.Type: GrantFiled: December 21, 1989Date of Patent: April 16, 1991Assignee: Ciba-Geigy CorporationInventors: Bruno Martinelli, Markus Ghezzi, Gunter Streicher
-
Patent number: 5002586Abstract: A process for the dyeing or printing of leather with anionic metal complex dyes wherein the metal complex dyes are metal complexes of metallizable monoazo dyes or metallizable monoazomethine dyes or both metallizable monoazo and monoazo methine dyes and before the application of the dye or after the application of the dye or both before and after the application of the dye the leather is treated with a product (P) or a mixture of products (P) or an acid addition product thereof, product (P) being a polymer obtainable by reaction of(.alpha.) a mono-functional or poly-functional amine containing one or more amino groups of the group consisting of primary, secondary and tertiary amino groupswith(.beta.) cyanamide, dicyanodiamide, guanidine or biguanide or a mixture in which up to 50 mole percent of the cyanamide, dicyanodiamide, guanidine or biguanide are replaced by a di-carboxylic acid or a mono- or diester thereofwith cleavage of ammonia or a further reaction product thereof with reactant(.gamma.Type: GrantFiled: August 5, 1988Date of Patent: March 26, 1991Assignee: Sandoz Ltd.Inventors: Michel Dien, Willi Egli