Exactly Three Azo Groups Attached Indirectly To Each Other By Nonionic Bonding Patents (Class 534/809)
  • Publication number: 20130314786
    Abstract: The present invention relates to an azo compound represented by the following formula (1) [wherein, A represents a naphthyl group having a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents a benzoylamino group having a substituent, a phenylamine group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent] and a salt thereof. By using the azo compound or a salt thereof of the present invention, a neutral color polarizing plate and a color polarizing plate for a liquid crystal projector being excellent in polarization performance and durability and having less color leakage in a visible light region can be provided.
    Type: Application
    Filed: February 6, 2012
    Publication date: November 28, 2013
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Takahiro Higeta, Takuto Nishiguchi
  • Publication number: 20130269124
    Abstract: The present invention relates to new azo dyes, a process for their preparation, and their use for dyeing or printing fibrous materials, to produce materials with brownish shades.
    Type: Application
    Filed: November 29, 2011
    Publication date: October 17, 2013
    Inventors: Helmut-Martin Meier, Christof Heide, Klaus-Günter Strumpf, Thomas Hübbe
  • Publication number: 20130247309
    Abstract: The present invention relates to a laundry shading process with specific blue or violet bisazo-dyes alone or in combination with a photocatalyst. Further aspects of the invention are a composition comprising at least one photocatalyst and at least one of the specific bisazo-dyes. The composition is particularly useful for shading textiles during laundry. Further aspects of the invention are a detergent composition, a fabric softener composition containing these dyes or mixtures of these dyes and photocatalysts and novel blue or violet bisazo-dyes.
    Type: Application
    Filed: May 13, 2013
    Publication date: September 26, 2013
    Applicant: BASF SE
    Inventors: CARMEN ARAYA HERNANDEZ, FRANK BACHMANN, HANS KRAMER, WOLFGANG SCHLENKER, DEEPAK M. RANE
  • Publication number: 20120245334
    Abstract: Methods and compositions are provided for detecting a primer extension product in a reaction mixture. In the subject methods, a primer extension reaction is conducted in the presence of a polymerase having 3??5? exonuclease activity and at least one FET labeled oligonucleotide probe that includes a 3??5? exonuclease resistant quencher domain. Also provided are systems and kits for practicing the subject methods. The subject invention finds use in a variety of different applications, and are particularly suited for use in high fidelity PCR based reactions, including SNP detection applications, allelic variation detection applications, and the like.
    Type: Application
    Filed: November 12, 2010
    Publication date: September 27, 2012
    Applicant: LIFE TECHNOLOGIES CORPORATION
    Inventors: QUIN CHOU, Dragan Spasic
  • Patent number: 8080101
    Abstract: The present invention relates to dye mixtures which comprise at least one dye of the formula (I), at least one dye of the formula (II) and optionally at least one dye of the formula (III) and/or optionally at least one dye of the formula (IV) in which D1 to D7, R201 to R203, R0, R* and R**, T, M, v and f are as defined in claim 1, to dyes of the formula (II), to processes for their preparation, and to their use for dyeing and printing hydroxyl- and carboxamido-containing materials.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: December 20, 2011
    Assignee: DyStar Colours Deutschland GmbH
    Inventors: Joachim Eichhorn, Stefan Meier, Werner Hubert Russ
  • Publication number: 20110075076
    Abstract: Azo compounds represented by formula (1) or (2) (In the formulas, A represents a phenyl group or naphthyl group that has at least 1 substituent. R1-R4 represent a hydrogen atom, lower alkyl group or lower alkoxy group, with at least one of R1-R4 being a lower alkoxy group that has a sulfone group. X represents an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group) and salts thereof.
    Type: Application
    Filed: May 19, 2009
    Publication date: March 31, 2011
    Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.
    Inventors: Takuto Nishiguchi, Hiroaki Ohno, Takahiro Higeta, Yuichi Sadamitsu
  • Patent number: 7276268
    Abstract: Poly-azo compound selected from the group consisting compounds of the formula (I) and compounds of the formula (II), (wherein, Me represents copper, nickel, zinc or iron, A represents a naphthyl group having 1 to 3 sulfonic groups and further optionally having an alkyl group or alkoxy group, R1 and R2 represent each independently a hydrogen atom, alkyl group or alkoxy group, and R3 represents an amino group or hydroxyl group.).
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: October 2, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toru Ashida, Narutoshi Hayashi
  • Publication number: 20030187236
    Abstract: The objective of the present invention is to provide a high-purity trisazo compound with excellent light resistance that is useful as a coloring matter for a black aqueous ink for ink jet recording and the like.
    Type: Application
    Filed: October 25, 2002
    Publication date: October 2, 2003
    Inventors: Yoshihiro Sawatari, Makiko Matsui, Shuji Sugawara
  • Publication number: 20030098447
    Abstract: A polyazo compound or salt thereof covering the region of from 500 to 580 nm and manifesting high initial polarization ability and represented by the following formulae (I) or (II): 1
    Type: Application
    Filed: July 5, 2002
    Publication date: May 29, 2003
    Inventors: Toru Ashida, Yoshiteru Ohta, Narutoshi Hayashi
  • Patent number: 6140477
    Abstract: A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one --OH group or at least one group derived from --OH group at p-position of the azo group in the molecule of the polyazo compound. This compound can be produced by diazotizing a substituted or nonsubstituted aromatic monocyclic or polycyclic compound or heterocyclic compound, each having a diazotizable primary amino group, and successively coupling the resulting diazo component with an azo component having a diazotizable primary amino group, the last azo component being such that --OH group or a group derived from --OH group be present at p-position to the azo group resulting from the azo component.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: October 31, 2000
    Assignee: Hakkol Chemical Co., Ltd.
    Inventors: Shigekazu Matsumoto, Takao Yanagisawa, Shigehiro Matsumoto, Kunio Shimabukuro
  • Patent number: 6022384
    Abstract: The present invention relates to a water-soluble reactive dye of the formula N(Z).sub.3, wherein each Z independently has the formula (III): ##STR1## wherein m, Q, Y and D are defined in the claims. The present invention also relates to a process for coloring a substrate that includes applying to the substrate the water-soluble reactive dye of the above formula at a pH above 7.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: February 8, 2000
    Assignee: Zeneca Limited
    Inventor: John Anthony Taylor
  • Patent number: 5964899
    Abstract: Azo dyes containing sulphur dye entities as a constitutional component are dyes of valuable properties, in particular for the dyeing of leather.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: October 12, 1999
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Jordi Berenguer, Manuel Jose Domingo, Jose Rocas
  • Patent number: 5616174
    Abstract: An ink composition is provided which enables high-quality recording on plain paper and can record an image having excellent water resistance. The ink composition comprises a dye represented by the following formula (I): ##STR1## wherein M represents an unsubstituted or substituted ammonium, R.sup.1 represents COOM, R.sup.2 represents --P(=O)n--(OM).sub.2, where n is 0 or 1, R.sup.3 represents SO.sub.3 M, R.sup.4 and R.sup.5 independently represent H, an alkyl group, or an alkoxyl group, R.sup.6 represents H, a phenyl group which may be substituted, an alkylcarbonyl group, or an alkyl group which may be substituted with a hydroxyl or alkoxyl group, and m is 0 or 1.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: April 1, 1997
    Assignee: Seiko Epson Corporation
    Inventors: Miharu Kanaya, Akio Owatari, Junko Takatsuna, Masahiro Yatake, Hiroko Hayashi, Takashi Ono, Yoshihiro Sawatari, Tatsuya Yagyu
  • Patent number: 5178671
    Abstract: Provided is an ink comprising a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## where R.sup.1 is a radical selected from the group of lower alkyl, lower alkoxy, --COOM, and --SO.sub.3 M; R.sup.2 and R.sup.3 are respectively a radical selected from the group of hydrogen, lower alkyl, lower alkoxy, amino, --NHCOCH.sub.3, --SO.sub.3 M, and --COOM; R.sup.4 and R.sup.5 are respectively a radical selected from the group of lower alkyl, lower alkoxy, --NHCOCH.sub.3, --SO.sub.3 M, and COOM; A is ##STR2## R.sup.6 is a radical selected from the group of acetyl, benzoyl, --SO.sub.2 C.sub.6 H.sub.5, --SO.sub.2 C.sub.6 H.sub.4 --CH.sub.3, phenyl, which is unsubstituted or substituted by --COOM or methyl, and ##STR3## R.sup.7 and R.sup.8 are respectively a radical selected from the group of hydrogen, hydroxyl, and --C.sub.2 H.sub.4 OH; R.sup.9 and R.sup.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: January 12, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Yamamoto, Tsuyoshi Eida, Mayumi Yamamoto
  • Patent number: 5145953
    Abstract: A biscyclobutarene monomer is prepared having two cyclobutarene moieties bridged by a divalent radical having at least one azo linkage. The monomers can be polymerized to form polymers exhibiting outstanding thermooxidative stability at high temperatures for prolonged time periods.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: September 8, 1992
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Kirchhoff, Alan K. Schrock
  • Patent number: 5127946
    Abstract: Provided is an ink containing a recording agent and a liquid medium for dissolution or dispersion thereof, said ink comprising, as the recording agent, a compound represented by the general formula (A) ##STR1## where n is 0 or 1; R.sub.1, R.sub.2, and R.sub.3 are respectively a substituent selected from the group consisting of hydrogen, methyl, methoxy, hydroxy, amino, acetylamino, and sulfonic acid; and M is an alkali metal, ammonium, or an organic ammonium.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: July 7, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Eida, Takao Yamamoto, Mayumi Yamamoto
  • Patent number: 4990421
    Abstract: An electrophotographic recording material comprising a conductive support and a photosensitive layer containing a photoconductive compound that has p-type charge generating capacity and is a trisazo compound which is the reaction product of the coupling reaction between a coupler compound that does not contain a carboxylic acid or sulphonic acid group and a diazonium salt represented by the following general formula (I): ##STR1## wherein: each of L, M and Y (same or different) represents a phenylene group including a phenylene groups substituted with one or more substituents selected from the group consisting of lower alkyl (C.sub.1 -C.sub.2), nitro, methoxy, ethoxy or halogen, or represents said phenylene group fused-on with the necessary atoms to close a saturated or unsaturated carbocyclic or heterocyclic ring or ring system including said ring or ring-system in substituted form, and X.sup.- is an anion.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: February 5, 1991
    Assignee: Agfa-Gevaert, N.V.
    Inventors: David R. Terrell, Marcel J. Monbaliu, Carina Geelen, Guy P. Verbeek, Frans C. De Schrijver, Mark G. Van der Auweraer
  • Patent number: 4977051
    Abstract: An electrophotographic photoreceptor is disclosed, which comprises an electrically conductive support having thereon a layer which contains a charge carrier transporting compound and a charge carrier generating compound, or a layer which contains charge carrier transporting compound and a layer which contains a charge generating compound, wherein at least one type of tris-azo compound represented by formula (I) is included as a charge carrier generating compound: ##STR1## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3, Ar.sub.4 and A are as defined in the specification.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: December 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Ohno, Katsuji Kitatani, Naonori Makino, Satoshi Hoshi, Hideo Sato
  • Patent number: 4952677
    Abstract: Reddish-brown to yellow shade colorants suitable for ribbon and ball point inks are produced from the glassy waste by-product of pararosaniline manufacture by slurrying the residue in mineral acid, diazotizing, and coupling. the resulting colorants are useful in preparing inks.
    Type: Grant
    Filed: September 15, 1988
    Date of Patent: August 28, 1990
    Assignee: BASF Corporation
    Inventors: Floyd G. Spence, Louis R. de Alvare, Robert J. Allen
  • Patent number: 4952678
    Abstract: Trisazo dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each, independently of the others, is hydrogen, methyl, ethyl, methoxy or chlorine, R.sup.5 is C.sub.2 -C.sub.4 -alkyl, X is C.sub.1 -C.sub.24 -mono- or dialkylamino, monobenzylamino, mono-(phenyl-ethyl)-amino, monophenylamino, N-(C.sub.1 -C.sub.12 -alkyl)-N-benzylamino, N-(C.sub.1 -C.sub.12 -alkyl)-N-(phenylethyl)amino or N-(C.sub.1 -C.sub.12 -alkyl)-N-phenylamino or each of the phenyls substituted by C.sub.1 -C.sub.12 -alkyl, cyclo-hexyl, 4-(C.sub.1 -C.sub.12 -alkyl)cyclohexyl, C.sub.1 -C.sub.24 -alkyloxy, phenoxy or C.sub.1 -C.sub.24 -alkanoyloxyl, or is OR, where R is C.sub.1 -C.sub.24 -alkyl, unsubstituted or C.sub.1 -C.sub.12 -alkyl-, cyclohexyl-, 4-(C.sub.1 -C.sub.12 -alkyl)cyclohexyl-, C.sub.1 -C.sub.24 -alkoxy-, phenoxy- or C.sub.1 -C.sub.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: August 28, 1990
    Assignee: BASF Aktiengesellschaft
    Inventor: Karl-Heinz Etzbach
  • Patent number: 4910299
    Abstract: Disperse dyes suitable for dyeing textile material composed of polyester dyes of the formula ##STR1## in which D is the radical of a substituted or unsubstituted, homocyclic or heterocyclic diazo component belonging to the series comprising thienyl, thiazolyl, isothiazolyl, 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl, benzothiazolyl, benzoisothiazolyl, pyrazolyl, imidazolyl or phenyl,X is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, acylamino, halogen or a group of the formula -NH-CO-NHQ in which Q is hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl,Y is hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkoxy,R is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.2 -C.sub.12 -alkenyl or phenyl, or Y and R, together with the nitrogen atom and the two C atoms linking them, form a 5-membered ring or 6-membered ring,B is a l inear or branched C.sub.2 -C.sub.6 -alkylene radical,W is halogen, C.sub.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: March 20, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Angelo D. Casa, Peter Liechti, Max Dempfle
  • Patent number: 4875903
    Abstract: Compounds of the formula ##STR1## wherein each R.sub.1 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkyl monosubstituted by hydroxy, halo, cyano or C.sub.1-4 alkoxy,each of X.sub.1 and X.sub.3 is independently halo, hydroxy, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl, phenoxy, amino or an aliphatic, cycloaliphatic, aromatic or heterocyclic amino group,each of X.sub.2 and X.sub.4 is independently an aliphatic, cycloaliphatic, aromatic or heterocyclic amino group containing at least one protonatable nitrogen atom or quaternary ammonium group,m is 0 or 1, andeach of n.sub.1 and n.sub.2 is independently 0 or 1, with the proviso that n.sub.1 +n.sub.2 is 1 or 2,wherein each halo is independently fluoro, chloro or bromo, with the provisos that (1) the total number of basic and cationic groups present as X.sub.1 -X.sub.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: October 24, 1989
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi
  • Patent number: 4836827
    Abstract: The compounds of the formula (1) given in claim 1 are suitable for use as dyes for dyeing a wide range of textile and non-textile materials and in particular for dyeing leather and pelts.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: June 6, 1989
    Assignee: Ciba-Geigy Corporation
    Inventor: Alois Puntener
  • Patent number: 4830944
    Abstract: A function separated type electrophotographic photosensitive member for infrared rays comprises a combination of a charge generation material and a charge transport material, wherein the electrophotographic photosensitive member for infrared rays contains as the charge generation material a disazo pigment represented by Formula (1).
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: May 16, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Umehara, Masakazu Matsumoto, Takao Takiguchi, Shozo Ishikawa
  • Patent number: 4793860
    Abstract: An aqueous ink composition comprises (a) a dye having formula (I) in an amount of 0.5 to 6.0 wt. %, in which 20% or more of the total of the cations of --SO.sub.3 X and --OX groups directly connected to the aromatic rings thereof is replaced by Li.sup.+ ion or a quaternary ammonium ion, ##STR1## wherein X represents a cation; R.sup.1 represents hydrogen, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, or an amino group; R.sup.2 represents ##STR2## (in which R.sup.5 and R.sup.6 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms, a hydroxyethyl group, or a cyanoethyl group); R.sup.3 represents hydrogen, --SO.sub.3 X; R.sup.4 represents hydrogen, or a --C.sub.2 H.sub.4 OX, (b) a polyhydric alcohol in an amount of at least 10 wt. %; and (c) water.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: December 27, 1988
    Assignee: Ricoh Company, Ltd.
    Inventors: Kakuji Murakami, Masaru Shimada, Tamotsu Aruga, Hiroyuki Uemura, Kiyofumi Nagai
  • Patent number: 4743523
    Abstract: A photosensitive member for electrophotography comprising a photosensitive layer containing an azo pigment selected from those represented by the following formulas (1)-(6): ##STR1## wherein R is an alkyl, aralkyl, aryl, or acyl each capable of having a substituent; Ar is an arylene or heterocyclic group each capable of having a substituent; Ar is a coupler residue group having a phenolic OH group; B is hydrogen, nitroso, or an alkyl, aralkyl, aryl or acyl group capable of having a substituent; and n is 0 or 1.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: May 10, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Yamashita, Takao Takiguchi, Shoji Umehara, Masakazu Matsumoto, Shozo Ishikawa
  • Patent number: 4735882
    Abstract: An electrophotographic photosensitive member comprises a photosensitive layer containing an azo pigment selected from the following general formulae (1) to (5): ##STR1## wherein groups Ar are arylene groups and divalent heterocyclic groups, each of which may contain a substituent; n is 0 or 1; and group A is a coupler residue group having a phenolic OH group.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: April 5, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Yamashita, Takao Takiguchi, Shoji Umehara, Masakazu Matsumoto, Shozo Ishikawa
  • Patent number: 4724259
    Abstract: Compounds of the general formula I ##STR1## where R.sup.1 and R.sup.2 independently of one another are each C.sub.6 -C.sub.24 -alkyl or are each benzyl which is unsubstituted or substituted by alkyl or by cycloalkyl, and one of the radicals may furthermore be hydrogen, and the rings A, B, C and D can be further substituted by chlorine, methyl or methoxy, with the exception of the compound of the formula ##STR2## are useful as dyes in electrooptical liquid crystal displays or for the production of polarization films.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: February 9, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Etzbach, Werner Juenemann, Johannes Dehnert
  • Patent number: 4721779
    Abstract: Trisazo compounds of the formula ##STR1## where Z is ##STR2## X and Y independently of one another are each C.sub.1 -C.sub.24 -alkoxy, benzyloxy, phenylethoxy, mono-C.sub.1 -C.sub.24 -alkylamino, monobenzylamino, monophenylethylamino, monophenylamino, bis-C.sub.1 -C.sub.24 -alkylamino, N-C.sub.1 -C.sub.12 -alkyl-N-benzylamino, N-C.sub.1 -C.sub.12 -alkyl-N-phenylethylamino or N-C.sub.1 -C.sub.12 -alkyl-N-phenylamino, where the benzene rings are unsubstituted or substituted by C.sub.1 -C.sub.12 -alkyl, cyclohexyl, 4-C.sub.1 -C.sub.12 -alkylcyclohexyl, C.sub.1 -C.sub.24 -alkoxy, phenoxy or C.sub.1 -C.sub.24 -alkanoyloxy, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently of one another are each hydrogen, methyl, methoxy, or chlorine and R.sup.7 is hydrogen or methyl, and the ring A or B may furthermore carry a fused benzene ring, are very useful as dyes in liquid crystal media, for example for electrooptical displays.
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: January 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventor: Karl-Heinz Etzbach
  • Patent number: 4670548
    Abstract: Water-soluble dyestuffs of the formulaA--N.dbd.N--B--N.dbd.N--C--N.dbd.N--KwhereinA denotes sulphophenyl or sulphonaphthyl, which are optionally further substituted,B denotes sulpho-1,4-naphthylene, which is optionally further substituted,C denotes 1,4-phenylene or 1,4-naphthylene, which are optionally further substituted, andK denotes the radical of an optionally functionally modified coupling component of the hydroxybenzene series, aminobenzene series, aminopyrazole series, pyridone series or acetoacetic acid arylide series, or of barbituric acid or citrazinic acid,and their use for dyeing nitrogen-containing fibre materials, such as wool and polyamide, and for dyeing leather.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: June 2, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jochen Westphal, Hermann Henk
  • Patent number: 4594410
    Abstract: Azo dyes of the formula ##STR1## and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form,each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,whereinQ is linear or branched C.sub.2-6 alkylene or --NH--CO--CH.sub.2 --,R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3 and R.sub.4 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl monosubstituted by cyano or hydroxy in the 2-, 3-, 4-, 5- or 6-position; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) having, on the phenyl ring, 1, 2 or 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1, 2 or 3 C.sub.1-4 alkyl groups or --NR.sub.3 R.sub.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: June 10, 1986
    Assignee: Sandoz Ltd.
    Inventor: Reinhard Pedrazzi