Patents Assigned to DyStar Textilfarben GmbH
  • Reactive azo dyes preparation thereof and use thereof
    Patent number: 6900294
    Abstract: The present invention relates to reactive dyes of the general formula (1) where Y is a heterocyclic reactive group of the general formula (2) or (3) where X1 to X5 are each as defined in claim 1, their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.
    Type: Grant
    Filed: August 11, 2001
    Date of Patent: May 31, 2005
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Stefan Meier, Werner Russ, Jörg Wörner
  • Continuous dyeing of fabrics comprising cellulosic fibers
    Publication number: 20050097685
    Abstract: A process for producing a reproducible ring dyeing with sulfur dyes on fabrics consisting of cellulosic fibers and blend fabrics containing cellulosic fibers comprises the application of the sulfur dye vat to the fabric being followed by a step in which the sulfur vat dye is fixed and incipiently oxidized at a temperature of 80 to 160° C. and preferably at a temperature of 120 to 130° C. and a moisture content of 5% to 50%, and preferably 20% to 35%.
    Type: Application
    Filed: October 19, 2004
    Publication date: May 12, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Bertram Seuthe, Franz Tolksdorf, Kurt Wersch
  • AOX-free navy and black disperse dyes
    Publication number: 20050070648
    Abstract: Monoazo dyestuffs of the general formula (1) wherein R1, R2, R3 and n are as defined in claim 1, method for their preparation and a method for colouring a synthetic textile material or fibre blend thereof using such dyestuffs.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 31, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Kiyoshi Himeno
  • Mono-, di-or trichromatic dyeing or printing of natural or synthetic polyamide fiber materials
    Publication number: 20050060819
    Abstract: The present invention relates to processes for mono-, di- or trichromatic dyeing or printing of natural or synthetic polyamide fiber materials, these processes utilizing a) blue-dyeing dye mixture, b) a red-dyeing dye mixture and/or c) a yellow-dyeing dye mixture, and also blue-dyeing, red-dyeing and yellow-dyeing dye mixtures and processes for their preparation.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 24, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Stefan Ehrenberg, Andreas Giehl, Jorg Worner
  • Black dye mixtures of fiber-reactive azo dyes, methods for their preparation and use thereof for dyeing hydroxy-and/or carboxamido-containing fiber material
    Patent number: 6870035
    Abstract: Deep black-dyeing dye mixtures comprising a disazo dye conforming to the general formula (1), and one or more disazo dyes conforming to the general formula (2), wherein the amide group is in the 6, 7, or 8 position relative to the hydroxy group and wherein: M, n, W, R1, R2, R3, R4, R5, R11, L1, L2, L3 are as defined in claim 1 methods for their preparation and use thereof for dyeing hydroxyl- and/or carboxamido-containing fiber material.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: March 22, 2005
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Ronald Pedemonte, Joachim Steckelberg, Werner Russ
  • High light fastness reactive red dyes
    Publication number: 20050059811
    Abstract: The present invention refers to dyestuffs of the formula (I) wherein R1 is H or (C1-C4)-alkyl; R2 is H or (C1-C4)-alkyl; each of X1 and X2, independently, is a labile atom or group; and M is H, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, wherein compounds wherein R1 and R2 are H are excluded, mixtures of the dyestuffs of the formula (I) with dyestuffs of the formula (II) wherein each of X3 and X4, independently, is a labile atom or group; L is an organic linking group; and M is H, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, processes for the preparation of said dyestuffs and said dyestuff mixtures and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.
    Type: Application
    Filed: September 9, 2004
    Publication date: March 17, 2005
    Applicant: DyStar Textilfarben GmbH & Co.
    Inventors: Werner Russ, Warren Ebenezer, Anthony Lawrence
  • Fibre reactive azo dyes
    Patent number: 6864361
    Abstract: The present invention refers to dyestuffs of the formula I wherein each of R1, R2, R3, R4 and R5, independently, is H or an optionally substituted alkyl group; each of X1 and X2, independently, is a labile atom or group; each of x and y, independently, is 0 or 1 and at least one of x and y is 1; each of a and b is 2 to 5 and when each of x and y is 1, a>b; and z is 0, 1, 2, 3 or 4; and wherein the variables D1 and D2 are defined as given in claim 1, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: March 8, 2005
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Warren James Ebenezer, Werner Russ
  • Reactive trisazo dyes
    Patent number: 6864360
    Abstract: The present invention refers to trisazo dyes of the formula I or an alkali metal salt thereof; wherein: Ar1 is an optionally substituted arylene group; Ar2 is an optionally substituted aryl group; R1, R2, R3, R4, X1 and X2 are defined as given in claim 1; each of D1 and D2, independently, is a chromophore group of the formula ?wherein the variables are defined as given in claim 1, a process for their preparation and a process for colouring fibre material containing a group reactive with a reactive dye.
    Type: Grant
    Filed: July 21, 2001
    Date of Patent: March 8, 2005
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Warren James Ebenezer
  • Dye mixtures of fiber-reactive AZO dyes, their preparation and their use
    Publication number: 20050034253
    Abstract: Reactive dye mixtures which comprise one or more dyes of the indicated general formula (i) and one or more dyes of the hereinbelow indicated and defined general formula (II) where D1, D2, D3, R0, R*, R**, T, b, f, v and M are each as defined in claim 1, the dyes of the general formulae (I) and (II) containing at least one fiber-reactive group of the formula —SO2-Z or Z2, their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing fiber material.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 17, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Stefan Meier, Werner Russ, Joachim Eichhorn
  • Dye mixtures of fiber-reactive azo dyes, their preparation and their use
    Publication number: 20050034252
    Abstract: Reactive dye mixtures consisting of one or more dyes of the hereinbelow indicated and defined general formula (I), and one or more monoazo dyes of the general formulae (15) to (16), each in an amount of 0-10% by weight, and one or more dyes of the hereinbelow indicated and defined general formulae (Ga)-(Gf) where D1, D2, D3, D4, D5, D6, D7, R*, R**, R31, R32, R33, R34, R35, R36, R37, R38, R39, Z, Z3 m, n and M are each as defined in claim 1, the dyes of the general formulae (I) and (Ga)-(Gf) containing at least one fiber-reactive group of the formula —SO2—Z or —Z2, their preparation and their use for dyeing hydroxyl- and/or carboxamido-containing fiber material.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 17, 2005
    Applicant: DyStar Textilfarben GmbH & Co.
    Inventors: Stefan Meier, Werner Russ, Joachim Eichhorn
  • Fibre reactive azo dyes
    Publication number: 20050036965
    Abstract: The present invention refers to dyestuffs of the formula I wherein R is an optionally substituted alkyl group; each of R1, R2 and R3, independently, is H or an optionally substituted alkyl group; each of X1 and X2, independently, is a labile atom or group; and each of A1 and A2, independently, is a chromophoric residue, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 17, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Warren Ebenezer, Werner Russ
  • Water-soluble fiber-reactive colorants, method for the production thereof, and use their use
    Patent number: 6852135
    Abstract: Dyes of the general formula (1): where M is hydrogen, alkali, ammonium or the equivalent of an alkaline earth metal ion, X is halogen, alkoxy or an N-containing heterocycle, Q is a grouping of the formula (e) where Y is vinyl or an alkali-eliminable grouping and W is alkyl which may be interrupted by an O or an NR group and the radicals R1 and R2 represent alkyl, alkoxy, alkylcarbonylamino, arylcarbonylamino, and also the radicals R3 and R4 are alkyl or hydrogen, their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing material, preferably fiber material.
    Type: Grant
    Filed: July 14, 2001
    Date of Patent: February 8, 2005
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Joachim Steckelberg, Hermann Henk
  • Production of cotton warp yarns having inverse denim effect
    Publication number: 20050011013
    Abstract: The present invention relates to a process for producing cotton warp yarns having an inverse denim effect, which comprises using an indigo dyeing range to perform a dyeing step whereby the cotton warp yarn is through-dyed with indigo in one pass at a dyeing temperature of 30 to 90° C. and an indigo concentration of 5-500 g/l and a subsequent bleaching step whereby the indigo is selectively decolorized on the surface of the cotton warp yarn.
    Type: Application
    Filed: July 12, 2004
    Publication date: January 20, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Wolfgang Schrott, Franz Sutsch, Alexander Bock
  • Through-dyeing of cotton warp yarns with indigo
    Publication number: 20050011014
    Abstract: The present invention relates to a process for through-dyeing of cotton warp yarns with indigo in an indigo dyeing range, which comprises dyeing in one pass at a dyeing temperature of 30 to 90° C. and an indigo concentration of 10-60 g/l.
    Type: Application
    Filed: July 12, 2004
    Publication date: January 20, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Wolfgang Schrott, Franz Sutsch, Alexander Bock
  • Disperse dye mixtures
    Publication number: 20040226112
    Abstract: Disperse non-azo dyestuff mixture comprising:
    Type: Application
    Filed: April 29, 2004
    Publication date: November 18, 2004
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Kiyoshi Himeno, Shinsuke Ohno
  • Mediator systems based on mixed metal complexes, used for reducing dyes
    Patent number: 6814763
    Abstract: Mediator systems obtainable by mixing one or more salts of a metal capable of forming a plurality of valence states with at least one amino-containing complexing agent (K1) and at least one hydroxyl-containing but amino-devoid complexing agent (K2) in an alkaline aqueous medium, wherefor the complexing agents may be present as salts and the molar ratio of K1 to metal ion is from 0.1:1 to 10:1 and the molar ratio of K2 to metal ion is from 0.1:1 to 5:1 are useful for dyeing cellulosic textile material.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: November 9, 2004
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Thomas Bechtold, Stefan Mohr, Wolfgang Schrott, Norbert Grund, Wolfgang Hiebsch
  • Reactive dye mixtures
    Patent number: 6800099
    Abstract: A dye mixture comprises, as component (A), a reactive dye of the formula (A) wherein each of Y1 and Y2, independently, is a vinyl group or a group of the formula —CH2CH2Q in which Q is a leaving group removable under alkaline conditions to provide a vinyl group; and, as component (B), at least one additional reactive dye selected from a monopyrazole dye of the formula (I), a mono or disazo dye of the formula (II), a monoazopyridone dye of the formula (III), a monoazonaphthyl dye of the formula (IV), a disazoaminonaphthyl dye of the formula (V), a formazan dye of the formula (VI), an azoacetoacetanalide dye of the formula (VII), a disazo dye of the formula (VIII), a naphthylamide or a naphthalenetriazole dye of the formula (IX), a metal phthalocyanine dye of the formula (X) or a triphendioxazine dye of the formula (XI), as defined herein.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: October 5, 2004
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Andrea Maria Zamponi
  • Mediator systems based on mixed metal complexes, used for reducing dyes
    Patent number: 6790241
    Abstract: Mediator systems obtainable by mixing a salt of an electrochemically active complexing metal (M1) capable of forming a plurality of valence states with a hydroxyl-containing complexing agent, which may likewise be present as salt, and with a salt of an electrochemically inactive complexing metal (M2) in an alkaline aqueous medium, wherefor the molar ratio of metal ion M2 to metal ion M1 is from 0.8:1 to 2:1 are useful for reducing dyes and dyeing cellulosic textile material.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: September 14, 2004
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Thomas Bechtold, Eduard Burtscher, Wolfgang Schrott, Norbert Grund, Peter Maier, Georg Schnitzer, Franz Sütsch
  • Method for producing aqueous alkaline solutions or reduced indigoid dyes
    Patent number: 6767448
    Abstract: From 5 to 60% by weight aqueous alkaline solutions of reduced indigoid dyes are prepared by reducing the indigoid dye electrochemically in the presence of a mediator.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: July 27, 2004
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Thomas Bechtold, Rudolf Krüger, Hans-Peter Maier, Georg Schnitzer, Franz Sütsch, Wolfgang Schrott, Norbert Grund
  • Reactive azo dyes
    Patent number: 6762288
    Abstract: The present invention relates to reactive azo dyes of the formula (I) or an alkali metal salt thereof, wherein A is formula (i) or (ii) C is an optionally substituted aromatic or heteroaromatic residue; and R1, R2, B, D, Y, a, b, c, d and n are defined as given in claim 1, a process for preparing said dyes and a process for colouring fibre material, which comprises applying thereto said dyes.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: July 13, 2004
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Warren James Ebenezer