Additional -c(=x)- Bonded Directly To Nitrogen, Which Nitrogen Is Bonded Directly To A Ring Patents (Class 534/854)
  • Patent number: 7875706
    Abstract: Disperse dyes of the general formula (I) where D is a diazo component derived from a substituted or unsubstituted aromatic amine, K is an aromatic radical of the formula and the substituents are each as defined in the first claim. Further described are the preparation and the use of the dyes according to the invention.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 25, 2011
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Robert Egli
  • Publication number: 20100281629
    Abstract: The invention relates to a dye of the general formula (I) where D is the residue of a diazo component; R1 is hydrogen, (C1-C6-alkyl, (C1-C4)-alkoxy, hydroxyl, halogen, —NHCHO, —NHCO(C1-C6)-alkyl, —NHCOaryl, —NHSO2(C1-C6)-alkyl or —NHSO2aryl; R2 is hydrogen, (C1-C6)-alkyl, (C1-C4)-alkoxy, phenoxy or halogen; R3 is hydrogen, (C1-C6)-alkyl, substituted (C1-C6)-alkyl, (C3-C4)-alkenyl or substituted (C3-C4)-alkenyl; or R2 and R3 combine to form the radical —C*H(CH3)CH2C(CH3)2—, where the carbon atom marked * is attached to the phenyl nucleus; R4 is hydrogen, (C1-C6)-alkyl or phenyl; R5 is vinyl or a group of the formula —CHR6COR7, where R6 is hydrogen, (C1-C6)-alkyl or phenyl; R7 is (C1-C6)-alkyl, substituted (C1-C6)-alkyl, phenyl or substituted phenyl; and X is C1-C5)-alkylene. The invention for relates to a process to prepare the dye and their use.
    Type: Application
    Filed: September 15, 2008
    Publication date: November 11, 2010
    Applicant: DyStar Colours Deustschland GmbH
    Inventor: Stefan Neubauer
  • Publication number: 20100076182
    Abstract: The present invention provides dyes of the general formula (I) where D is the residue of a diazo component; R1 to R7 and L are each as defined in claim 1, processes for their preparation and their use.
    Type: Application
    Filed: January 14, 2008
    Publication date: March 25, 2010
    Inventors: Hartwig Jordan, Stefan Neubauer, Anthony Lawrence, Nigel Hall
  • Patent number: 7358345
    Abstract: The present invention claims dyestuffs of formula (I), wherein D, R1 to R7 and n are defined as given in claim 1, a process for their preparation and their use
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 15, 2008
    Assignee: Dystar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Nigel Hall
  • Patent number: 7101983
    Abstract: The present invention relates to novel dyestuffs of formula (I) wherein the substituents have the meanings defined in the claims, the production of such dyestuffs, the use of these dyestuffs and material dyed or printed by such dyestuffs.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: September 5, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Robert Egli, Oliver Eich, Knut Göke
  • Patent number: 7060807
    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 fiber blend thereof using such dyestuffs.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: June 13, 2006
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Kiyoshi Himeno
  • Patent number: 6376655
    Abstract: The invention relates to novel monodisperse or polydisperse compounds, in general named DNO (diamino acid N&agr;-substituted oligopeptides), preferably low molecular weight polypeptides, e.g., based on ornithine, lysine, diaminobutyric acid, diaminopropionic acid, aminoethylglycine or other amino acids or peptides having azobenzenes or other physicially functional groups, e.g., photoresponsive groups, as side chains. These compounds may be synthesized using solid phase peptide synthesis techniques. Materials, e.g., thin films, comprising such compounds may be used for optical storage of information (holographic data storage), nonlinear optics (NLO), as photoconductors, photonic band-gap materials, electrically conducting materials, electroluminescent materials, piezo-electric materials, pyroelectric materials, magnetic materials, ferromagnetic materials, ferroelectric materials, photorefractive materials, or materials in which light-induced conformational changes can be produced.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: April 23, 2002
    Assignee: Riso National Laboratory
    Inventors: Rolf Henrik Berg, Søren Hvilsted, P. S. Ramanujam
  • Patent number: 6111083
    Abstract: Disperse dyes of formula ##STR1## wherein R.sub.1 is nitro or cyano, R.sub.2 is halogen, R.sub.3 is C.sub.1 -C.sub.4 alkyl, R.sub.4 and R.sub.5 are each independently of the other methyl or ethyl and R.sub.6 is hydrogen, methyl or ethyl, with the proviso that R.sub.6 is not hydrogen if R.sub.1 is cyano, R.sub.2 is halogen and R.sub.3 is methyl or isopropyl or if R.sub.1 is nitro, R.sub.2 is halogen and R.sub.3 is methyl.These dyes are suitable in particular for dyeing and printing polyester textile materials.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: August 29, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Antoine Clement, Alfons Arquint, Urs Lauk
  • Patent number: 6072042
    Abstract: The present invention provides a bis (aminocarbonylnaphthol) derivative which is useful as a raw material for novel azo pigments by bisamidation of each one carboxyl group of two 2-hydroxynaphthalene-3,6-dicarboxylic acids using an aliphatic or aromatic diamine.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: June 6, 2000
    Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
    Inventors: Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori, Katsunori Tanikawa, Mariko Tanigawa
  • Patent number: 6034226
    Abstract: Disperse dyes of formula ##STR1## wherein R is nitro or cyano, R.sub.1 is halogen, R.sub.2 is C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by C.sub.1 -C.sub.3 alkoxy, halogen, cyano or phenyl, R.sub.3 is C.sub.1 -C.sub.4 alkyl, R.sub.4 is methyl or ethyl, R.sub.5 is hydrogen, methyl or ethyl, and R6 is methyl or ethyl, with the proviso that R.sub.5 is not hydrogen if R is nitro, R.sub.1 is halogen and R.sub.2 is C.sub.1 -C.sub.4 alkyl.These dyes are particularly suitable for dyeing and printing textile materials consisting of polyester fibres.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: March 7, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paul Herzig, Antoine Clement, Alfons Arquint
  • Patent number: 5942604
    Abstract: A dye mixture, which comprises as component (A) a dye of formula as component (B) a dye of formula ##STR1## and/or as component (C) a dye of formula ##STR2## wherein D, X and Y are as defined in the specification. These dyes are particularly suitable for dyeing polyester fiber textile material.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: August 24, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paul Herzig, Antoine Clement, Romeo Dreier, Alfons Arquint
  • Patent number: 5910578
    Abstract: Azo dyes of the formula ##STR1## where X is oxygen or a radical of the formula NR.sup.6, where R.sup.6 is hydrogen or substituted or unsubstituted C.sub.1 -C.sub.13 -alkyl,R.sup.1 is substituted or unsubstituted C.sub.1 -C.sub.13 -alkyl or substituted or unsubstituted phenyl,Y is hydrogen, halogen or cyano,Z is nitro or additionally cyano when Y is halogen or cyano,R.sup.2 is C.sub.1 -C.sub.4 -alkyl, methoxymethyl or substituted or unsubstituted phenyl,R.sup.3 is hydrogen, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl, andR.sup.4 and R.sup.5 are each substituted or unsubstituted C.sub.2 -C.sub.13 -alkyl or C.sub.2 -C.sub.6 -alkenyl,are useful for dyeing or printing synthetic materials and are synthesizable using novel dinitroaminoaromatics as diazo components.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: June 8, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Saling, Erhard Klahr, Helmut Reichelt, Sabine Gruettner-Merten
  • Patent number: 5869628
    Abstract: Disperse dyes of formula ##STR1## wherein R.sub.1 is chloro or bromo,R.sub.2 is methyl or ethyl, andR.sub.3 is methyl or ethyl.The dyes are particularly suitable for dyeing or printing polyester fiber textile material.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: February 9, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paul Herzig, Antoine Clement
  • Patent number: 5723587
    Abstract: Disperse dyes of formula ##STR1## wherein D is the radical of a diazo component of the benzene, naphthalene, diphenyl, azobenzene, thiophene, benzothiazole, benzisothiazole, thiazole, thiadiazole, indazole, benzotriazole, pyrazole, anthraquinone, naphtholimide, chromone or diphenylene oxid series;X is hydrogen, methyl, halogen or --NH--CO--R, wherein R is methyl, ethyl, propyl, isopropyl, ethoxy or amino;Y is hydrogen, halogen, methoxy or --O--(CH.sub.2).sub.n --OR', wherein R' is hydrogen, CH.sub.3 or CH.sub.2 CH.sub.2 CN, and n is an integer from 1 to 6;R.sub.3 is C.sub.1 -C.sub.6 alkyl, andR.sub.4 is hydrogen, C.sub.1 -C.sub.6 alkyl or alkyl.The dyes are particularly suitable for dyeing polyester textile material and are distinguished in particular by very good lightfastness.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: March 3, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Antoine Clement, Athanassios Tzikas
  • Patent number: 5569751
    Abstract: The present invention relates to new useful azo dyestuffs which are free from ionic groups, of the general formula I ##STR1## wherein X.sup.1, X.sup.2, X.sup.3, Y, R, R.sup.1 and R.sup.2 have the meanings given in Claim 1, mixtures of dyestuffs of the general formula I, the preparation of dyestuffs of the general formula I and their use for dyeing and printing hydrophobic fibre materials.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: October 29, 1996
    Assignee: Hoechst Mitsubishi Kasei Co.
    Inventor: Ulrich Buhler
  • Patent number: 5550218
    Abstract: Compounds of the formula ##STR1## wherein A is C.sub.1-6 alkylene, D is a diazo component radical of the triazolyl, pyrazolyl, cyano(C.sub.1-4 alkyl)-imidazolyl, 4-chlorothiazolyl, 4-chlorotheinyl-2, 3-phenyl-1,2,4-thiadiazolyl-5, isothiazolyl-5, benzoisothiazolyl-3 or 1,3,4-thiadiazolyl-5 series or the phenyl series wherein the phenyl group is free of sulfonyl groups and may be substituted, by a maximum of 3 substituents 5-nitrothiazolyl-2, ##STR2## R.sub.1a is phenyl or phenyl substituted by 1 to 4 substituents each of which is independently halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, trifluoromethyl, hydroxy, nitro, formyl, cyano, --SCN, (C.sub.1-4 alkyl)carbonyl, (C.sub.1-4 alkyl)carbonylamino, (C.sub.1-4 alkoxy)carbonyl, (C.sub.1-4 alkyl)carbonyloxy, carbamoyl, (C.sub.1-2 alkoxy)(C.sub.2-3 alkoxy)carbonyl or phenyl, andR.sub.2 -R.sub.4 and R.sub.10 -R.sub.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: August 27, 1996
    Assignee: Sandoz Ltd.
    Inventor: Ruedi Altermatt
  • Patent number: 5495004
    Abstract: The present invention relates to monoazo dyes of the general formula I ##STR1## in which X is methyl, chlorine or bromine,R.sup.1 is ethyl, n-propyl, i-propyl, n-butyl or i-butyl,R.sup.2 is (C.sub.1 -C.sub.6)-alkyl, (C.sub.1 -C.sub.4)-alkoxy-substituted linear (C.sub.2 -C.sub.4)-alkyl, allyl, phenyl, acetyl or propionyl andR.sup.3 is hydrogen, acetyl or propionyl,mixtures containing dyes of the general formula I and the preparation of these dyes and their mixtures and their use for the dyeing of hydrophobic synthetic materials, in particular for automotive cover fabrics.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: February 27, 1996
    Assignee: Hoechst Mitsubishi Kasei Company
    Inventor: Ulrich Buhler
  • Patent number: 5466791
    Abstract: The present invention relates to valuable monoazo dyes of the general formula I ##STR1## in which R is methyl or ethyl,R.sup.1 is methyl, ethyl, methoxyethyl or ethoxyethyl,R.sup.2 is methyl or ethyl, if n is equal to 0, and hydrogen, if n is equal to 1,R.sup.3 is methyl, ethyl, n-propyl or i-propyl andn is 0 or 1,to mixtures of dyes of the general formula I and to the preparation of these dyes and their mixtures and to their use for the dyeing of hydrophobic fiber materials.
    Type: Grant
    Filed: February 13, 1994
    Date of Patent: November 14, 1995
    Assignee: Cassella Aktiengesellschaft
    Inventors: Ulrich Buhler, Reinhard Kuhn, Margareta Boos
  • Patent number: 5428138
    Abstract: The azo dyes of the formula I ##STR1## where X.sup.1 is for example hydrogen or (C.sub.1 to C.sub.6)alkyl,X.sup.2 is cyano or nitro,X.sup.3 is for example hydrogen or (C.sub.1 to C.sub.4)alkoxy,X.sup.4 is for example (C.sub.1 to C.sub.4)alkoxy, chlorine or hydrogen,R.sup.1 is hydrogen or (C.sub.1 to C.sub.6)alkyl,R.sup.2 is hydrogen or (C.sub.1 to C.sub.6)alkyl andR.sup.3 is for example (C.sub.1 to C.sub.8)alkyl,are highly suitable for dyeing and printing hydrophobic fiber materials.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: June 27, 1995
    Assignee: Cassella AG
    Inventors: Ulrich Buhler, Margareta Boos, Reinhard Kuhn
  • Patent number: 5324827
    Abstract: Nonlinearly optically active monomer species comprising at least two carbon-carbon activated double bonds, i.e., the polymerization of which is facilitated by the presence of an electron attracting function, and a non-centrosymmetric system of pi (.pi.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: June 28, 1994
    Assignee: Flamel Technologies
    Inventors: Yves Camberlin, Gerard Mignani, Remi Meyrueix, Gilles Tapolsky
  • Patent number: 5292872
    Abstract: A Monoazo dye of the general formula I ##STR1## in which X is methyl, chlorine or bromineR.sup.1 is ethyl, n-propyl, i-propyl, n-butyl or i-butylR.sup.2 is methyl, ethyl, n-propyl, i-propyl, n-butyl or i-butyl andn is 2 or 3,mixtures containing dyes of the general formula I and the preparation of these dyes and their mixtures and their use for the dyeing of hydrophobic synthetic materials, in particular for automotive cover fabrics.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: March 8, 1994
    Assignee: Hoechst Mitsubishi Kasei Co.
    Inventor: Ulrich Buhler
  • Patent number: 5281241
    Abstract: A polycylic dye of the Formula (1): ##STR1## wherein: R.sup.1 is --OSO.sub.2 R in which R is optionally substituted alkyl, alkoxy, aryl, alkoxyaryl, cycloalkyl or heteroaryl;Ring A is unsubstituted or is substituted by from one to three groups; andRing B is unsubstituted or is substituted by one or two groups in addition to the group R.sup.1.Dyes of the present invention are useful for the coloration of textile materials particularly synthetic textile materials such as polyester, dye mixtures comprising a polycyclic dye of Formula (1) and a different polycyclic dye or an azo dye show improved build-up on polyester material.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: January 25, 1994
    Assignee: Zeneca Limited
    Inventor: Prakash Patel
  • Patent number: 5160495
    Abstract: Monoazo dyestuffs useful for dyeing and printing hydrophobic fibers have the formula ##STR1## in which R.sup.1 denotes alkyl having 1 to 3 carbon atoms, R.sup.2 and R.sup.3 independently of one another denote alkyl having 2 to 5 carbon atoms and R.sup.4 denotes methyl or ethyl.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: November 3, 1992
    Assignee: Cassella Aktiengesellschaft
    Inventors: Ulrich Buhler, Reinhard Kuhn, Margareta Boos
  • Patent number: 5116958
    Abstract: Disperse dyes, which produce dyeings of excellent thermomigration fastness, consisting of a chromophore and a lactam or oxime radical which detaches on heating to leave an isocyanate or isothiocyanate group, which reacts with a suitable group in the environment. The disclosed dyes are described by the formula ##STR1## where F is the radical of a dye which is free of water-solubilizing groups,B is a bridge member or a direct bond,Z is O or S andV is the radical of a group H--V, where H--V is an oxime of the formula ##STR2## or a lactam of the formula ##STR3## in which R.sup.1 and R.sup.2 are each independently of the other substituted or unsubstituted alkyl or aryl, orR.sup.1 and R.sup.2 together with the carbon atom linking them form a cycloaliphatic ring,R is hydrogen or alkyl andn is an integer from 4 to 11.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: May 26, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Liechti, Martin Trottmann
  • Patent number: 5055567
    Abstract: The dyes according to the invention consist of a chromophore and a radical which, on heating, forms an isocyanate or isothiocyanate group. The latter reacts with a suitable group in the environment. Dyeings of excellent thermomigration fastness are obtained. The disclosed dyes are of the formulae ##STR1## where F is the radical of an azo, anthraquinone or tricyanovinyl dye which is free of water-solubilizing groups,B and B' are each independently of the other a direct bond or a bridge member, selected from the group consisting of a straight-chain or branched alkylene group having 2 to 8 C atoms or one of the following groups ##STR2## where R is hydrogen or C.sub.1 -C.sub.6 alkyl, n is an integer from 1 to 8 and m is an integer from 2 to 4,Z is O or S,V is a group which at a temperature between 180.degree. and 240.degree. C. is eliminated as a radical HV, andV' is a direct bond which is cleaved at a temperature between 180.degree. and 240.degree. C.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: October 8, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Liechti, Karl Emmenegger, Martin Trottmann
  • Patent number: 4908042
    Abstract: Azo dyes of the formula ##STR1## wherein R.sup.1 is alkyl having 1 to 4 carbon atoms; R.sup.2 is alkyl having 1 to 3 carbon atoms; R.sup.3 is alkylcarbonyloxyethyl having 1 to 3 carbon atoms in the alkyl moiety, alkoxycarbonyloxyethyl having 1 to 4 carbon atoms in the alkoxy moiety, methoxyethoxycarbonyloxyethyl or ethoxyethoxycarbonyloxyethyl; and R.sup.4 is one of the definitions of R.sup.3 or cyanoethyl; or mixtures of at least two species of said formula are used for dyeing and printing hydrophobic fiber materials.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: March 13, 1990
    Inventors: Ulrich Buhler, Manfred Hahnke, Michael Kunze, Albert Bode
  • Patent number: 4802889
    Abstract: Monoazo dyestuff of the formula ##STR1## wherein R.sup.1 is 4 alkyl having 1 to 3 carbon atoms, andR.sup.2 is methyl, ethyl or alkoxy having 1 to 4 carbon atoms hich is unsubstituted or substituted by methoxy or ethoxy is useful for dyeing and printing hydrophobic fibers a blue color.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: February 7, 1989
    Assignee: Cassella Aktiengesellschaft
    Inventors: Ulrich Bte,uml/u/ hler, Horst Tappe, Reinhard Kuhn, Albert Bode, Margareta Boss
  • Patent number: 4769449
    Abstract: Azo dyes of the formula ##STR1## wherein R.sup.1 is alkyl having 1 to 4 carbon atoms; R.sup.2 is alkyl having 1 to 3 carbon atoms; R.sup.3 is alkylcarbonyloxyethyl having 1 to 3 carbon atoms in the alkyl moiety, alkoxycarbonyloxyethyl having 1 to 4 carbon atoms in the alkoxy moiety, methoxyethoxycarbonyloxyethyl or ethoxyethoxycarbonyloxyethyl; and R.sup.4 is one of the definitions of R.sup.3 or cyanoethyl; or mixtures of at least two species of said formula are used for dyeing and printing hydrophobic fiber materials.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: September 6, 1988
    Assignee: Cassella Aktiengesellschaft
    Inventors: Ulrich Buhler, Manfred Hahnke, Michael Kunze, Albert Bode
  • Patent number: 4769447
    Abstract: The present invention provides gamma-glutamyl-4-azoanilides, processes for their preparation and their use as substrates for gamma-glutamyl transferase determination, of the formula ##STR1## wherein X is alkyl, --(CH.sub.2).sub.m --COOH or --O--(CH.sub.2).sub.n --COOH wherein m is 0-4 and n is 1-4; R is optionally substituted p-nitrophenyl; an optionally substituted thiophene residue; an optionally substituted thiazole residue; an optionally substituted benzothiazole residue; an optionally substituted benzoisothiazole residue; an N-alkylthiazole residue; or an optionally substituted 1,3,5-thiodiazole residue; as well as the alkali metal, alkaline earth metal and ammonium salts thereof.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: September 6, 1988
    Assignee: Boehringer Mannheim GmbH
    Inventors: Elli Rauscher, John Griffiths, Leonard F. Dixon
  • Patent number: 4703110
    Abstract: The application discloses certain benzoic acid compounds, the same being more adequately described as benzoic acid derivatives having a para substituent which is a substituted phenyl radical attached to the benzoic acid in the para position by any one of a variety of linking groups, representative compounds being p-(3,4-diisopropylphenylcarbamoyl) benzoic acid and p-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthylcarbamoyl)benzoic acid, pharmaceutical compositions thereof, method of treating therewith, method of diagnosis therewith, and method for the preparation thereof. The compounds and compositions are useful for diagnosis of leukemia types, the treatment of dermatological disorders, and as differentiation-inducing agents for neoplastic cells.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: October 27, 1987
    Assignee: Koichi Shudo
    Inventor: Koichi Shudo
  • Patent number: 4552951
    Abstract: This invention relates to azo dyes which may be unsubstituted or substituted with a variety of groups known to the dye art, and containing a diazonium moieties from an aniline type compound and certain coupler moieties from aniline, tetrahydroquinoline, or benzomorpholine compounds, wherein the diazonium moiety has one or two cinnamoyl substituents, and wherein one or more water-solubilizing groups such as a sulfonic acid group or its metal or amine salt may be present as a substituent in the dye molecule for acid dyeing. These dyes are particularly useful in dyeing one or more of polyamide cellulose acetate polyester, wool and other fibers.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: November 12, 1985
    Assignee: Eastman Kodak Company
    Inventor: Robert N. Gourley