Sulfur Dye Or Vat Dye Patents (Class 8/642)
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Using ascorbic acid or sodium ascorbate to extend storage life of base templates for laser finishing
Patent number: 11840788Abstract: Indigo-dyed garments are treated with an anti-ozone agent to prevent ozone-related degradation of the garments before laser finishing. Without treatment, the garments can exhibit color loss (e.g., color change or fading) from exposure to ozone in the atmosphere. The indigo-dyed garments with anti-ozone treatment can serve as base templates in a laser finishing process flow. The anti-ozone treatment of the base templates can include a rinse including an ascorbic acid or vitamin C constituent during a base preparation process. Then quantities of these base templates can manufactured and stored for periods of time without exhibiting ozone-related degradation effects.Type: GrantFiled: July 12, 2022Date of Patent: December 12, 2023Assignee: Levi Strauss & Co.Inventors: Chatura Atukorala, James Barton Sights, David Love, Elizabeth O'Neill, Jeff Zens, Benjamin Bell, Jennifer Schultz, Christopher Schultz, Debdulal Mahanty, Sachith Devendra Samarasinghe -
Patent number: 11723426Abstract: Laser finishing of apparel products allows an operating model that reduces finishing cost, lowers carrying costs, increases productivity, shortens time to market, be more reactive to trends, reduce product constraints, reduces lost sales and dilution, and more. Improved aspects include design, development, planning, merchandising, selling, making, and delivering. The model uses fabric templates, each of which can be used to produce a multitude of laser finishes. Operational efficiency is improved.Type: GrantFiled: February 8, 2022Date of Patent: August 15, 2023Assignee: Levi Strauss & Co.Inventors: Elizabeth O'Neill, James Barton Sights, Jeff Zens, David Love
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Patent number: 8932965Abstract: Fabrics containing camouflage patterns are produced from dyes wherein at least certain of the colors contained in the pattern contain a low reflectance dye. The low reflectance dye is added to one or more colors in the pattern in order to preserve the camouflage pattern when viewed through night vision goggles as relatively long wavelengths, such at wavelengths greater than 900 nm. In one embodiment, the low reflectance dye comprises a thiazine. The low reflectance dye is blended with other dyes to produce colors in the pattern. By altering the concentration of the low reflectance dye in each of the colors, the colors contained in the camouflage pattern remain separate and distinct even at relatively long wavelengths.Type: GrantFiled: July 30, 2009Date of Patent: January 13, 2015Assignee: International Textile Group, Inc.Inventor: Dale R. Wendel
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Publication number: 20140335751Abstract: Slasher machines and rope dyeing machines are the main dyeing machine that is used to continuously dye yarn fabrics for denim using indigo dyes. In denim dyeing, indigo (blue color VAT) and some sulfur dyes are mixed together to achieve blue/black/brown color denim fabrics. This invention is the achievement of dyeing reactive/direct/pigment/acid/disperse and other non VAT/sulfur OR its combinations of non VAT/sulfur dyes OR combinations between VAT/sulfur dyes and VAT/sulfur dyes on continuous yarn dyeing machines and relevant apparatus. Its products are also very distinguishable, especially its combinations, hence is a part of the invention.Type: ApplicationFiled: May 8, 2014Publication date: November 13, 2014Inventor: Shan James LEE
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Publication number: 20140082860Abstract: An object of the present invention is provide a disperse dye composition that has the light fastness required of synthetic fiber materials for automotive interiors that are exposed to sunlight at high temperature and high humidity, and that has good blue, red, and yellow dyeability. This object is achieved by a mixed disperse dye composition comprising a blue disperse dye composition having a specific composition ratio of five specific types of disperse dyes, and other specific yellow and/or red disperse dyes. The invention makes it possible to provide a disperse dye composition having not only high fastness of each color but light fastness with a favorable balance of the three primary colors, with the dye properties of each color equal during dyeing, and good dye color reproducibility, as well as by a dyeing method using this dye.Type: ApplicationFiled: June 7, 2012Publication date: March 27, 2014Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Yoshiyuki Sato, Toru Yamaguchi
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Patent number: 8636814Abstract: There is a coloring composition containing a compound represented by Formula (1): wherein D, M, N, R1, R2, m and n are defined in the specification and in the claims.Type: GrantFiled: May 21, 2013Date of Patent: January 28, 2014Assignee: FUJIFILM CorporationInventors: Yoshihiko Fujie, Keiichi Tateishi, Clive Edwin Foster
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Patent number: 8628588Abstract: There is provided a coloring composition containing: a compound represented by Formula (1) or Formula (4): and a copper compound that is soluble in water: Formula (1) DSO3M)4 or Formula (4) (L)m-(D?)n wherein D, M, L, D?, m and n are defined in the claims and in the specification.Type: GrantFiled: May 31, 2013Date of Patent: January 14, 2014Assignee: FUJIFILM CorporationInventors: Yoshihiko Fujie, Keiichi Tateishi, Clive Edwin Foster
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Patent number: 8409300Abstract: Novel disperse azo dyes of formula (I), and processes for preparation thereof. These dyes possess superior washing fastness, sublimation fastness and light fastness.Type: GrantFiled: December 23, 2010Date of Patent: April 2, 2013Assignee: Colourtex Industries LimitedInventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai
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Patent number: 8323358Abstract: The present invention refers to a red-dyeing acid dye mixture comprising a dye of the formula (I) and at least one dye of the formula (II) a process for its manufacturing and a process for dyeing and printing of natural or synthetic polyamide fiber material in which it used.Type: GrantFiled: February 6, 2006Date of Patent: December 4, 2012Assignee: DyStar Colours Deutschland GmbHInventors: Thomas Ruchser, Andreas Giehl
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Patent number: 8075638Abstract: The invention relates to the dyeing of keratin materials using dichromophore dyes with a carbonyl or heterocyclic linker. The invention relates to a dye composition comprising a dye with a carbonyl or heterocyclic linker, and to a dyeing process with a lightening effect on keratin materials, in particular keratin fibers, especially human keratin fibers such as the hair, using said composition, optionally in the presence of a cosmetically acceptable acid or base. It similarly relates to novel dyes and to the uses thereof in lightening keratin materials. This composition makes it possible to obtain a coloring with a lightening effect which is particularly resistant and visible on dark keratin fibers.Type: GrantFiled: September 23, 2008Date of Patent: December 13, 2011Assignee: L'Oreal S.A.Inventor: Andrew Greaves
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Publication number: 20110289697Abstract: The present invention relates to a process for dyeing sheetlike textile materials with a dye, which comprises a concentrated dye system being applied in a total amount of 1% to 25% by weight, based on the textile material, to the textile material in two or more sub-steps and the dye being fixed on the textile material after each and every sub-step.Type: ApplicationFiled: August 14, 2009Publication date: December 1, 2011Applicant: Dystar Colours Deutschland GmbHInventors: Christian Meyer, Wolfgang Schrott, Franz Sütsch
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Patent number: 8034125Abstract: The present invention relates to the dyeing of keratin materials using two colorless dye precursors, at least one of which contains a disulfide/thiol unit, said precursors reacting together chemically to form the color in situ. The process according to the invention makes it possible in the context of certain variants to solve the problems caused by the color generated during the process, while at the same time not degrading the efficacy of the coloration, and especially of the lightening effect. The colorations obtained are moreover powerful, chromatic, sparingly selective, and fast with respect to external agents such as sunlight, perspiration and especially shampoo.Type: GrantFiled: September 23, 2008Date of Patent: October 11, 2011Assignee: L'Oreal S.A.Inventors: Andrew Greaves, Nicolas Daubresse
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Patent number: 7686850Abstract: Disclosed are nitro-sulfide dyes of formula (1), their salts, isomers, hydrates and other solvates, wherein R1, R2, R3, independently from each other are hydrogen; C1-C20alkyl or C1-C20alkoxy, which may be substituted by one or more C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2 or hydroxy; C3-C6cycloalkyl; —C(O)H; —C(O)—C1-C5alkyl; —C(O)OH; —C(O)O—C1-C5alkyl; halogen; NO2; OH; SH; phenyl, which may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2 or hydroxy; or a radical of formula (1a) —NR4R5, wherein R4 and R5 independently from each other are hydrogen; C1-C12alkyl, which may be substituted by one or more C1-C5alkyl, C1-C5-alkoxy, hydroxy or —(CO)—H; —(CO)—C1-C5alkyl; phenyl or phenyl-C1-C4alkyl, wherein the phenyl moiety may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2, carboxy or hydroxy; or a radical of formula (2); wherein at least one oType: GrantFiled: June 14, 2006Date of Patent: March 30, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Christian Cremer, Olof Wallquist
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Patent number: 7666232Abstract: A reactive trichromatic set comprising (a) at least one of the following reactive red dye of formula (I), wherein R1, R2, R3, X, D, Z, and n are defined the same as in the specification; (b) at least one reactive yellow dye selected from the following Color Index; C.I. Reactive Yellow 145 and C.I. Reactive Yellow 176; and (c) at least one reactive blue dye selected from the following Color Index; C.I. Reactive Blue 194, C.I. Reactive Blue 221 and C.I. Reactive Blue 222.Type: GrantFiled: June 22, 2006Date of Patent: February 23, 2010Assignee: Everlight USA, Inc.Inventors: Wen-Jang Chen, Bao-Kun Lai, Te-Chin Sung, Cheng-Hsiang Hsu
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Patent number: 7550016Abstract: Disclosed are compounds of formula.Type: GrantFiled: June 14, 2006Date of Patent: June 23, 2009Assignee: Ciba Specialty Chemicals Corp.Inventors: Christian Cremer, Olof Wallquist
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Publication number: 20090100611Abstract: An acid dye composition comprising a dyestuff according to the formula (I) and a dyestuff according to the formula (II) and a dyestuff according to the formula (III)Type: ApplicationFiled: July 17, 2006Publication date: April 23, 2009Inventors: Helmut Sieber, Rino Marazzi
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Publication number: 20090100610Abstract: Disclosed are mixtures of sulfide dyes and dyeing compositions comprising mixtures of sulfide dyes. The dye mixtures are useful for the dyeing of organic materials, such as keratin fibers, preferably human hair.Type: ApplicationFiled: September 13, 2006Publication date: April 23, 2009Inventors: Christian Cremer, Victor Paul Eliu, Beate Frohling, Olof Wallquist
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Patent number: 7282070Abstract: A reactive dye composition having satisfactory reproducibility, leveling, washing off and toughness under balanced affinity and reactivity, and improving Right First Time success ratio, for dyeing a cellulose fiber or fiber materials containing the cellulose fiber. The reactive dye composition comprising: (a) at least one reactive red dyestuff selected from the group consisting of the following formulas, the component (a) is present in an amount ranging from 1% to 99% by weight, and (b) at least one yellow reactive dyestuff selected from the group consisting of the following Color Index: C.I. Reactive Yellow 145 and C.I. Reactive Yellow 176, and at least one blue reactive dyestuff selected from the group consisting of the following Color Index: C.I. Reactive Blue 194, C.I. Reactive Blue 221 and C.I. Reactive Blue 222, the component (b) is present in an amount ranging from 99% to 1% by weight.Type: GrantFiled: October 19, 2005Date of Patent: October 16, 2007Assignee: Everlight USA, Inc.Inventors: Wen-Jang Chen, Chien-Yu Chen, Bao-Kun Lai, Ya-Chi Tseng
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Patent number: 6398822Abstract: Packaged hair coloring composition comprising a stable aqueous hair coloring composition comprising a compound of formula (I): wherein the variables are each as defined in the claims. The packaged hair coloring compositions of the present invention provide improved wash fastness of dye on hair, less color fade over time, improved consumer acceptance in terms of providing a single packaged hair dye composition and improved product stability.Type: GrantFiled: December 18, 2000Date of Patent: June 4, 2002Assignee: The Proctor & Gamble CompanyInventors: Earl David Brock, Heather Holden Harper, Taher Iqbal Yousaf
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Patent number: 6302925Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.Type: GrantFiled: November 22, 1999Date of Patent: October 16, 2001Assignee: Clariant Finance (BVI) LimitedInventors: J. Michael Hipp, Mark S. Carlough, William T. Sherrill, Peter Stahala
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Patent number: 6287349Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.Type: GrantFiled: November 22, 1999Date of Patent: September 11, 2001Assignee: Clariant Finance (BVI) LimitedInventors: J. Michael Hipp, Mark S. Carlough, William T. Sherrill, Peter Stahala
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Publication number: 20010009045Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.Type: ApplicationFiled: November 22, 1999Publication date: July 26, 2001Inventors: J. MICHAEL HIPP, MARK S. CARLOUGH, WILLIAM T. SHERRILL, PETER STAHALA
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Publication number: 20010004780Abstract: The present invention relates to textile spun-dyed fiber material comprising synthetic fibers or mixtures of cellulosic and synthetic fibers for producing military camouflage articles, wherein the synthetic fiber fraction is spun-dyed with a dye having a chlorophyll-like reflectance in the IR region, and to its use for producing military camouflage print articles.Type: ApplicationFiled: December 20, 2000Publication date: June 28, 2001Inventors: Horst Roland Mach, Guido Krabbe
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Patent number: 6019800Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.Type: GrantFiled: December 17, 1998Date of Patent: February 1, 2000Assignee: Clariant Finance (BVI) LimitedInventors: J. Michael Hipp, Mark S. Carlough, William T. Sherrill, Peter Stahala
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Patent number: 5972050Abstract: Mixtures comprise the dye of the formula I ##STR1## the dye C.I. Sulphur Black 1 (53 185), at least one disazo dye of the formula II ##STR2## where the ring A, X.sup.1, R.sup.1, R.sup.2 and R.sup.Type: GrantFiled: October 26, 1998Date of Patent: October 26, 1999Assignee: BASF AktiengesellschaftInventors: Matthias Wiesenfeldt, Johannes Peter Dix, Rolf Streicher, Manfred Herrmann, Gunther Lamm
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Patent number: 5951717Abstract: A dyeing process comprises continuous dyeing of cellulosic circular knit, which comprises impregnating a rope of said circular knit with an aqueous liquor comprising one or more dissolved and/or dispersed dyes, any necessary fixing alkali and optionally further assistants at a temperature between 20 and 95.degree. C., squeezing off said impregnated rope and subsequently feeding said squeezed-off rope without intermediary drying into an apparatus in which said rope is opened out into a crease-free state and said dye is fixed in an unsaturated steam/air mixture which is at 100 to 160.degree. C. at an autogenous wet temperature of the moist rope of between 50 and 95.degree. C. and a fixing time of at least 20 seconds.Type: GrantFiled: March 10, 1998Date of Patent: September 14, 1999Assignee: DyStar Textilfarben GmbH & Co.Inventors: Uwe Mrotzeck, Andreas Schrell, Thomas Nauroschat, Erol Ozcan, Alfred Tressel
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Patent number: 5882359Abstract: Vat dye mixtures comprising at least two structurally different dyes which have the formula ##STR1## in which X is phenyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen; morpholino; or the radical --SR.sub.3 ; R.sub.1 and R.sub.2 independently of one another are each hydrogen or the radical --NHCO--C.sub.6 H.sub.5, and R.sub.3 is C.sub.1 -C.sub.4 alkyl, or phenyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl or halogen, which are suitable for dyeing cellulosic fiber materials and give dyeings with good allround properties, are described.Type: GrantFiled: July 31, 1997Date of Patent: March 16, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Peter Leupin, Roland Zoelper
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Patent number: 5647875Abstract: A desired color shade is produced on a textile substrate by treating a dyed textile substrate, which has an initial color shade which is partly due to color caused by the presence thereon of a vat dye and partly due to color caused by the presence thereon of a sulfur dye, with a chlorine-free decolorizing agent, such as hydrogen peroxide in an aqueous alkaline medium, whereby the color shade of the substrate is changed from said initial color shade to said desired color shade by removal therefrom of a proportion of the color attributable to the sulfur dye without removing as large a proportion of the color attributable to the vat dye.Type: GrantFiled: December 2, 1994Date of Patent: July 15, 1997Assignee: Clariant Finance (BVI) LimitedInventor: Michael W. Dixon
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Patent number: 5364415Abstract: Leuco vat dyes are employed to produce brighter shades from oxidative dyes in oxidative haircoloring systems and processes.Type: GrantFiled: May 27, 1993Date of Patent: November 15, 1994Assignee: Clairol IncInventor: David M. Lewis
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Patent number: 5358536Abstract: According to the present invention, there can be provided a black dyestuff for heat-sensitive transfer record comprising at least one orange dyestuff represented by the formulaAr.sub.1 --N=N--Ar.sub.2 --N=N--Ar.sub.3 ( 1)[wherein each of Ar.sub.1, Ar.sub.2 and Ar.sub.3 is independently an aryl group which may have a substituent] and at least one blue dyestuff represented by the formula ##STR1## [wherein each of R.sub.1, R.sub.2 and R.sub.3 is independently a hydrogen atom, halogen atom, nitro group, hydroxyl group, alkyl group which may have a substituent, alkoxy group, alkylsulfonylamino group or alkylcarbonylamino group, and each of R.sub.4 and R.sub.5 is independently an alkyl group which may have a substituent, and a black heat-sensitive transfer sheet in which the above-mentioned dyestuff is used.Type: GrantFiled: July 31, 1992Date of Patent: October 25, 1994Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Hitoshi Koshida, Isamu Ghoda, Tsukasa Ohyama, Keisuke Takuma
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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
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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
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Patent number: 5034016Abstract: Dyed denim cotton yarns capable of meeting the market demand for color jeans can be provided by immersing denim cotton yarns in a dye bath containing a dye or dye composition comprising a specific indirubin derivative(s), a specific quinophthalone derivative(s) and/or an indigo dye, squeezing and air-oxidizing the dyed yarns, and repeating a series of these steps.Type: GrantFiled: May 24, 1989Date of Patent: July 23, 1991Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Hitoshi Koshida, Tetsuo Sakagawa, Takayuki Nakayama, Hiroshi Suwa, Masao Imai, Akio Karasawa
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Patent number: 4941887Abstract: Disclsoed herein is dye suitable for use in dyeing denim cotton yarns. The dye comprises at least one quinophthalone derivative represented by the following general formula (I) or (II): ##STR1## wherein X means H, Br or Cl and Y denotes H, COOR or --COOC.sub.2 H.sub.4 OR (R: alkyl), or a combination of said at least one quinophthalone derivative and an idigo dye. A dyeing process making use of the above dye and denim cotton yarns thus dyed are also disclosed.Type: GrantFiled: January 22, 1988Date of Patent: July 17, 1990Inventors: Tetsuo Sakagawa, Takayuki Nakayama, Hisanobu Kunihiro, deceased, by Masako Kunihiro, legal representative
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Patent number: 4902300Abstract: Synthetic/cellulosic blend textile fabrics are simultaneously dyed and the synthetic component simultaneously treated to impart flame resistance in a single step with good color yield. Additional fabric finishing may be used to impart flame resistance to the cellulosic component of the fabric.Type: GrantFiled: May 19, 1988Date of Patent: February 20, 1990Assignee: Burlington Industries, Inc.Inventors: James R. Johnson, Randolph L. Finley
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Patent number: 4801303Abstract: Polyester-cotton blend textile substrates are dyed with a disperse dye and then with a sulfur dye from the same dyebath which is maintained at a temperature no higher than 105.degree. C. when the sulfur dye is present therein and which preferably contains glucose as the reducing agent for the sulfur dye.Type: GrantFiled: June 1, 1987Date of Patent: January 31, 1989Assignee: Sandoz Ltd.Inventors: Mark S. Carlough, Laszlo A. Meszaros
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Patent number: 4723961Abstract: The alkaline reoxidation of vat and sulfur vat dyes by means of hydrogen peroxide is difficult to control and to keep constant. By using agents which split off hypochlorite in the heat, for example sodium N-chloro-p-toluenesulfonamide, at pH values above 8 it is possible according to the invention even to reoxidize reliably combinations of these dyes having different oxidation behaviors. At the same time it became possible to combine the necessary soaping process with reoxidation.Type: GrantFiled: September 9, 1986Date of Patent: February 9, 1988Assignee: Hoechst AktiengesellschaftInventor: Heinrich O. Bernhardt
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Patent number: 4654046Abstract: The invention relates to a thermosol pad-steam process for the continuous dyeing of cellulose/polyamide blends, which comprises impregnating said blends with a pad liquor which contains a non-ionic surfactant or a mixture of non-ionic surfactants, in addition to at least one vat dye and at least one metal complex dye and optionally further auxiliaries.This process is particularly suitable for dyeing large yardages.Type: GrantFiled: December 20, 1985Date of Patent: March 31, 1987Assignee: Ciba-Geigy CorporationInventor: Hellmut Felle
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Patent number: 4588409Abstract: Textile products comprising a cellulosic substrate are colored with two or more dyes which differ in their respective resistance to chlorine bleaches. The initial color of the textile is determined by the combined effect of the dyes. Thereafter, textile products which may be in the form of garments, bed linens, draperies, or yard goods, are treated with an aqueous solution of bleach to decolorize, to a pre-determined degree, one or more of the dyes, to thereby change the color of the textiles.Type: GrantFiled: December 22, 1983Date of Patent: May 13, 1986Inventor: Owen H. Sercus
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Patent number: 4443226Abstract: Work clothing, having an optical warning effect, which has been dyed in specific, prescribed color shades and is not coated with plastics is desired by the authorities. Thioindigo and/or derivatives of the red and pink series of thioindigo, as the base dyestuff, in combination with specific yellow disperse dyestuffs have proved usable, for dyeings on polyester fibers or polyester/cotton fiber mixtures, which are in the required shade of fluorescent orange-red and meet the requirements regarding color point, luminance and fastness to light. Both the exhaustion process and the thermosol process can be used to produce these dyeings.Type: GrantFiled: February 7, 1983Date of Patent: April 17, 1984Assignee: Hoechst AktiengesellschaftInventor: Helmut Rohser
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Patent number: 4314812Abstract: According to two-phase processes multi-color effects are obtained on cellulosic materials, namely conversion effects with reactive and vat dyestuffs on the one hand and discharge resist prints with reactive dyestuffs and, optionally, vat dyestuffs on the other hand, by printing or padding the reactive dyestuff or a mixture of reactive and vat dyestuffs in a weakly acidic medium onto the material, overprinting this material with a neutral paste containing a stable discharging agent of the sulfinic acid series and, if desired, a vat dyestuff, drying the print, contacting the material with an aqueous strongly alkaline liquor, steaming it and finishing the article in known manner, depending on the choice of dyestuffs.Type: GrantFiled: July 1, 1980Date of Patent: February 9, 1982Assignee: Hoechst AktiengesellschaftInventor: Erich Feess
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Patent number: 4314811Abstract: According to two-phase processes multi-color effects are obtained on cellulosic materials, namely conversion effects with reactive and vat dyestuffs on the one hand and discharge resists prints with reactive dyestuffs and, optionally, vat dyestuffs on the other hand, by printing or padding the reactive dyestuff or a mixture of reactive and vat dyestuffs in a weakly acidic medium onto the material, overprinting this material with a neutral paste containing formamidine sulfinic acid as discharging agent and, if desired, a vat dyestuff, drying the print, contacting the material with an aqueous strongly alkaline liquor, steaming it and finishing the article in known manner, depending on the choice of dyestuffs.Type: GrantFiled: July 1, 1980Date of Patent: February 9, 1982Assignee: Hoechst AktiengesellschaftInventors: Erich Feess, Friedrich Reinhardt
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Patent number: 4285692Abstract: Process for the production of granular mixtures of vat dyestuffs and/or disperse dyestuffs, characterized in that liquid or pasty, finished formulations of two or more vat dyestuffs and/or disperse dyestuffs are spray-dried together to form granules.Type: GrantFiled: October 4, 1979Date of Patent: August 25, 1981Assignee: Bayer AktiengesellschaftInventors: Willy Schiwy, Jurgen Schulze, Ferdinand Hummes, Peter Schulze, Reinhold Hornle, Hans-Heinz Molls, Harry Orttmann
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Patent number: 4213900Abstract: Easily water-dispersible pulverulent formulations of disperse dyes are prepared by spray-drying a dye solution which comprises(a) one or more disperse dyes,(b) one or more water-soluble anionic dispersants,(c) from 0 to 20% by weight, based on (a+b+c+d), of other surfactants and(d) from 0 to 20% by weight, based on (a+b+c+d) of agents which serve as protective colloids (the proportion of (c+d) being at most 20% by weight).Suitable solvents (e) are formic acid, formamide, N-methylformamide, butyrolactone, ethylene glycol and propylene glycol, which may in addition contain up to 100% by weight, based on (e), of N,N-dimethylformamide or acetic acid or mixtures of these. The formulations obtained by the above process contain the dye in very fine dispersion.Type: GrantFiled: July 17, 1978Date of Patent: July 22, 1980Assignee: BASF AktiengesellschaftInventors: Ewald Daubach, Dieter Horn, Erwin Hahn, Herbert Uhrig