The Hetero Ring And Benzene Ring, To Which An Azo Group Is Bonded Directly, Bonded Directly To The Same Nitrogen Patents (Class 534/638)
  • Patent number: 5310886
    Abstract: There are disclosed azo compounds conforming to formula (1) shown and defined hereinafter, and the preparation thereof. They have fiber-reactive properties and are used for preparing strong and fast dyeings on hydroxy- and/or carboxamido-containing material, preferably fiber material, such as synthetic polyamide, wool and in particular cellulose fibers. ##STR1## where: M is hydrogen or a salt-forming metal,K.sup.o is a radical of the formula (2A) or (2B) ##STR2## where Z is a radical of the formula (3) ##STR3## where R.sup.o is hydrogen or lower alkyl which may be substituted by certain substituents, G is halogen, methoxy, hydroxy or substituted or unsubstituted anilino, Z.sup.1 is a radical of the formula (3a) or (3b) ##STR4##--alk--SO.sub.2 --Yand wherein A, B, R*, R", Y, a, k, D, E and K are as defined in the specification.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: May 10, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Kurt Hussong
  • Patent number: 5300633
    Abstract: Azo compounds of the formula D.sup.o --N.dbd.N--K.sup.o, in which D.sup.o is a radical of the formula (2), (2a) or (2b) ##STR1## in which Y is a substituent which can be eliminated by alkali to form the vinyl group, X is chlorine or bromine and R is hydrogen, lower alkyl, phenyl or halogen, and K.sup.o is the radical of a coupling component or another radical which contains azo groups, K.sup.o containing a group of the formula --N(R.sup.o)--Z, in which R.sup.o is hydrogen or lower alkyl and Z is a radical of the formula ##STR2## in which A is halogen or cyanoamido, R.sup.20 is hydrogen or lower alkyl, and R.sup.21 has one of the meanings given for R.sup.20, or is an optionally methyl-substituted cycloalkylene radical, or is a phenyl radical, or in which R.sup.20 and R.sup.21, together with the nitrogen atom and if appropriate one or two further hetero groups, can form a 5- or 6-membered heterocyclic radical.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: April 5, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jorg Dannheim, Werner H. Russ
  • Patent number: 5298607
    Abstract: The invention provides reactive dyes of the formula ##STR1## wherein D is a mono- or polyazo, metal complex azo, anthraquinone, phthalocyanine, formazane, dioxazine or stilbene dye which contains sulfo groups, R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.2 is hydrogen, methyl or ethyl, X is a radical of the formula --SO.sub.2 CH.sub.2 CH.sub.2 Cl, --SO.sub.2 CH.dbd.CH.sub.2, --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H, --SO.sub.2 CH.sub.2 CH.sub.2 OPO.sub.3 H or --N(R.sub.3)SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H, and R.sub.3 is hydrogen, methyl or ethyl, and the benzene or naphthalene radical is not further substituted or is further substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: March 29, 1994
    Assignee: Ciba-Geigy Corporation
    Inventor: Herbert Seiler
  • Patent number: 5292870
    Abstract: A compound which, in the free acid form, is of Formula (1): ##STR1## wherein: Z is vinyl, or an ethyl group having a substituent at the 2-position which is capable of being eliminated in the presence of alkali to give a vinyl group;D is substituted or unsubstituted phenylene or naphthylene;K is the residue of a coupling component;R.sup.1 is H, alkyl or substituted alkyl;R.sup.2 is alkyl or substituted alkyl;X is halo or quaternary ammonium; andL is substituted or unsubstituted phenylene.The compound is useful as a dye for the coloration of, for example, cotton, on which it has excellent build up, good fixation efficiency and good wash off properties.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: March 8, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventor: Kenneth Anderton
  • Patent number: 5278292
    Abstract: Water-soluble fiber-reactive dyes are described conforming to the below-indicated formula (1) which are capable of dyeing hydroxyl- and/or carboxamido-containing material, in particular fiber material, such as wool and in particular cellulose fiber materials, in strong, fast shades. ##STR1## in which F is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, triphenoldioxazine, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, formazan, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dye;R.sup.x is hydrogen or alkyl of 1 to 4 carbon atoms;R is hydrogen, sulfo, carboxyl, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms or chlorine;w is 1, 2, 3 or 4;Y is vinyl or an ethyl group which contains in the .beta.-position a substituent which is eliminable by alkali to form a vinyl group;n is 1 or 2.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: January 11, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Rolf Gleissner, Gunther Schwaiger
  • Patent number: 5276148
    Abstract: Reactive dyes of the formula ##STR1## where n is 0 or 1,R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl,A is unsubstituted or substituted C.sub.2 -C.sub.8 -alkylene,Y is vinyl or a radical of the formula --CH.sub.2 --CH.sub.2 --Q, whereQ is a group which can be eliminated under alkaline reaction conditions,D.sup.1 is phenyl or naphthyl, where these radicals may be substituted,D.sup.2 is phenylene or naphthylene, where these radicals may be substituted, andZ is a reactive radical,with the proviso thata) n is zero when D.sup.1 is substituted by unsubstituted or substituted phenylazo or by unsubstituted or substituted naphthylazo andb) the reactive radical Z is not devised from the triazine series when n is zero and D.sup.1 is dihydroxysulfonylphenyl or trihydroxysulfonylnaphthyl,are used for dyeing and printing organic substrates containing hydroxyl groups or nitrogen atoms.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: January 4, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Siegel, Manfred Patsch
  • Patent number: 5268457
    Abstract: Reactive dyes of the formula ##STR1## are particularly suitable for dyeing or printing cellulosic fibre materials by the exhaust method or by continuous processes and give, with a high color yield, dyeings and prints with good fastness properties, in which D is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dye; R is hydrogen or alkyl having 1 to 4 carbon atoms, which can be substituted by hydroxyl, cyano, carboxyl, sulfo or sulfato; X is fluorine or chlorine; B is a substituted or unsubstituted aliphatic or aromatic bridge member; Y is a substituted or unsubstituted aliphatic, aromatic, araliphatic or heterocyclic radical, which is free from reactive groups; R.sub.2 is hydrogen or alkyl having 1 to 4 carbon atoms, which can be substituted by halogen, hydroxyl, cyano, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: December 7, 1993
    Assignee: Ciba-Geigy Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 5268458
    Abstract: Azo compounds containing, as the diazo constituent, 1-sulpho-6-carboxy-2-aminonaphthalene and, as the coupling constituent, substances which contain a residue of the pyrimidine or triazine series which reacts with fibers. The azo compounds possess dye properties and, when used in the usual application fixing process for fiber-reactive dyes, color materials containing carbonamide and/or hydroxyl groups, in particular fibrous material such as wool, synthetic nylon and, in particular, cellulose fiber materials in intense, permanent shades.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: December 7, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Kurt Hussong
  • Patent number: 5256774
    Abstract: Improved reactive dyestuffs have the following formula ##STR1## in which the substituents have the meaning given in the description.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: October 26, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Harms, Thomas Eizenhofer
  • Patent number: 5250670
    Abstract: There are described monoazo compounds which exhibit fiber-reactive properties and dye hydroxy- and/or carboxamido-containing materials, in particular fiber materials, such as, for example, cellulose fiber materials and wool, in shades of high color strength and good fastness properties and can also be used in particular for resist and discharge printing. They have the formula (1) ##STR1## in which: A is substituted or unsubstituted phenylene or unsubstituted or sulfo-substituted naphthylene, the groups X--SO.sub.2 -- and --SO.sub.2 X.sup.1 are fiber-reactive groups from the vinylsulfonyl series, n is the number 1 or 2, M is hydrogen or an alkali metal, R is hydrogen or a lower alkyl, W is phenylene or lower alkylene, B is lower alkyl and one group --SO.sub.3 M is bound to the 8-naphthol radical in the 3- or 4-position.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: October 5, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ludwig Schlafer, Werner H. Russ
  • Patent number: 5241056
    Abstract: Reactive dyestuffs of the formula ##STR1## and the meanings of substituents given in the description produce on hydroxyl- and amido-containing fibre materials orange dyeings which are fast to boiling.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: August 31, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Hoppe, Karl-Josef Herd, Hermann Henk
  • Patent number: 5239063
    Abstract: Fiber reactive azo dyestuffs of the formula ##STR1## in which R=H or C.sub.1 -C.sub.6 alkyl, which can be substituted with OH, Hal, SO.sub.3 H or OSO.sub.3 H;Z=heterocyclic five or six membered ring;n, m=0, 1 or 2, wherein n+m=0, 1 or 2;Y=OH, OR, NR.sub.2 R.sub.3, OMe; andR.sub.2, R.sub.3, =H, R and R.sub.2, R.sub.3 and N can form a heterocyclic 5 or 6-membered ring.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: August 24, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Hoppe, Martin Michna, Karl-Josef Herd, Frank-Michael Stohr
  • Patent number: 5233026
    Abstract: Reactive dyes of the formula ##STR1## in which D is a monoazo dye, R.sub.1 is hydrogen or a substituted or unsubstituted C.sub.1-4 alkyl radical, Z is an unsubstituted or substituted amino group, and X is a vinyl, .beta.-sulfatoethyl, .beta.-thiosulfatoethyl, .beta.-chloroethyl or .beta.-acetoxyethyl group, with the condition that Z is not a sulfo- or carboxyl-substituted phenylamino group when the triazine radical is bonded to the radical of 1,8-aminonaphthol-3,6- or -4,6-disulfonic acid, and the X--SO.sub.2 radical is bonded directly to an aromatic C atom, are suitable in particular for dyeing and printing cellulose-containing fiber materials by the cold pad-batch method and produce, in high dyeing yields, dyeings and prints having good fastness properties.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: August 3, 1993
    Assignee: Ciba-Geigy Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 5231171
    Abstract: Reactive dyes useful for dyeing or printing hydroxyl- or nitrogen-containing substrates have the formula ##STR1## where Rg is a radical of the formula ##STR2## Ar is the radical of a benzene or naphthalene ring, Z.sup.1 and Z.sup.2 are each hydrogen, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl, substituted or unsubstituted phenyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, cyano, halogen or hydroxysulfonyl,Z.sup.3, Z.sup.4 and Z.sup.5 are each hydrogen, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl or substituted or unsubstituted phenyl,U is a group which is detachable under alkaline reaction conditions,X is in case a) the radical of a chromophore or in case b) the radical of a coupling component to which may additionally be attached, via an azo bridge, the radical of a diazo component and which may have additional reactive groups, andL is in case a) a bridge member or in case b) an azo bridge.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: July 27, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Claus Marschner, Matthias Niedenbrueck, Bernd Siegel, Manfred Patsch, Klaus Pandl
  • Patent number: 5227478
    Abstract: Compounds of the formula ##STR1## in which either and salts thereof R.sub.1 is hydrogen or hydroxy-C.sub.2-3 alkyl, andR.sub.2 is hydroxy-C.sub.2-3 alkyl, orR.sub.1 is hydrogen or 2-cyanoethyl, andR.sub.2 is --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 OH,and mixtures of such compounds, which compounds are in free acid or salt form, are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, particularly leather and textiles containing or consisting of natural or synthetic polyamides or of natural or regenerated cellulose, especially textile material containing or consisting of cotton.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: July 13, 1993
    Assignee: Sandoz Ltd.
    Inventor: Werner Koch
  • Patent number: 5227475
    Abstract: Water-soluble dyestuffs which correspond to the formula (1) given below, have fiber-reactive properties and dye synthetic and natural materials, in particular fiber materials, containing hydroxyl and/or carboxamide groups, such as wool and in particular cellulose fiber materials, in deep shades ##STR1## in which: F is the radical of a dyestuff, such as of an azo dyestuff, heavy metal complex azo dyestuff, anthraquinone dyestuff or phthalocyanine dyestuff,R.sup.x is hydrogen or lower alkyl, which can be substituted by halogen, hydroxyl, cyano, lower alkoxy, lower alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato;n is the number 1 or 2; andQ is a group of the formula ##STR2## in whichR.sup.
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: July 13, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Holger M. Buch, Reinhard Hahnle, Hartmut Springer
  • Patent number: 5216137
    Abstract: Azo reactive dyes useful for dyeing or printing hydroxyl- or nitrogen-containing substrates have the formula ##STR1## where m is 0, 1 or 2,n is 0 or 1,p is 0 or 1,R.sup.1 and R.sup.2 are each independently of the other hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl,R.sup.3 is hydrogen, methyl or ethyl,T is carboxyl or hydroxysulfonyl,Hal is fluorine or chlorine, andthe ring A may be benzofused or substituted.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: June 1, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Loeffler, Manfred Patsch, Reinhold Krallmann
  • Patent number: 5210187
    Abstract: Double attachment reactive dyes have the formula ##STR1## where U.sup.1 is C.sub.1 -C.sub.4 -alkyl, phenyl, C.sub.2 -C.sub.10 -alkenyl or the radical ##STR2## where Q.sup.1 and Q.sup.2 are each independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl and Q.sup.3 is a group which is detachable under alkaline reaction conditions,Z is the radical ##STR3## where each Q.sup.4 is independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl which may be substituted by cyano, U.sup.2 is C.sub.1 -C.sub.4 -alkyl, phenyl, C.sub.2 -C.sub.10 -alkenyl or the radical ##STR4## where Q.sup.5 and Q.sup.6 are each independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl and Q.sup.7 is a group which is detachable under alkaline reaction conditions, and w is 0, 1 or 2,t is 0, 1 or 2,v is 1 or 2 and X and L are each as defined in the description, with the proviso that at least one of the two radicals U.sup.1 and U.sup.2 is not C.sub.1 -C.sub.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: May 11, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Patsch, Uwe Nahr, Friedrich Wirsing, Joerg L. Jessen, Klaus Pandl, Claus Marschner, Matthias Dust
  • Patent number: 5189206
    Abstract: There is disclosed a process for the preparation of compounds of formula ##STR1## wherein the symbols are as defined in claim 1, which process comprises dissolving a compound of formula ##STR2## in sulfuric acid, adding this solution to oleum and reacting the mixture in the temperature range from 10.degree. to 80.degree. C. until a sulfo group has been completely introduced, and, in an optional further step, subjecting the reaction mixture to further reaction in the temperature range from 100.degree. to 200.degree. C. to introduce a second sulfo group.The compounds of formula (1) obtainable by this process are useful intermediates for the synthesis of dyes and are particularly suitable diazo components for the synthesis of azo dyes.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: February 23, 1993
    Assignee: Ciba-Geigy Corporation
    Inventor: Paul Herzig
  • Patent number: 5175263
    Abstract: Azo compounds with fiber-reactive dye properties, having defined general formula (1) below, are described which dye fiber materials containing hydroxy and/or carboxamide groups, such as synthetic polyamide fibers or wool, and especially cellulose fiber materials such as cotton, in strong, fast, predominantly red shades. ##STR1## in which: X is vinyl or .beta.-sulfatoethyl;T is a direct bond or the methylene or divalent methyl amino group;D is phenylene which is unsubstituted or substituted by lower alkyl, lower alkoxy, chlorine, bromine, sulfo and/or carboxy, or is an unsubstituted or sulfo-substituted naphthylene or a group of the formula ##STR2## R is phenyl which is unsubstituted or substituted by hydroxy lower alkyl, lower alkoxy, carboxy and/or sulfo, or is a lower alkyl substituted by unsubstituted or sulfo-substituted phenyl or by unsubstituted or sulfo-substituted naphthyl; andM is a hydrogen atom or an alkali metal.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: December 29, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Ludwig Schlafer
  • Patent number: 5149791
    Abstract: Novel reactive dyes of the formula ##STR1## in which Z is a radical of the formula ##STR2## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or C.sub.1 -C.sub.6 alkyl, which can be substituted by C.sub.1 -C.sub.4 alkoxy, hydroxy-C.sub.1 -C.sub.4 alkoxy, HO--(CH.sub.2 CH.sub.2 --O).sub.2-4 --, C.sub.1 -C.sub.4 alkoxy-carbonyl, C.sub.2 -C.sub.4 alkanoyloxy, carboxyl, cyano, chlorine, sulfo or sulfato, n is the number 0, 1 or 2 and m is the number 1 or 2, (Q.sub.1).sub.m is 1 or 2 substituents Q.sub.1 independent of one another from the group comprising C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, acetylamino and carboxyl, (Q.sub.2).sub.n is 0 to 2 substituents Q.sub.2 and (Q.sub.2).sub.m is 1 or 2 substituents Q.sub.2 independent of one another from the group comprising C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: September 22, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Athanassios Tzikas, Urs Lauk
  • Patent number: 5149789
    Abstract: Reactive dyes of the formula ##STR1## where 1 is 0 or 1,n is 0 or 1,E is nitrogen or C--Cl,A is the radical of an azo dye attached to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimino group,B--if E is nitrogen--is the radical of an azo dye or of a formazan dye which in either case is bonded to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimino group or else--if n is 0--is fluorine, chlorine or unsubstituted or substituted amino, or --if E is C--C1--is fluorine, chlorine or methyl,X.sup.1 and X.sup.2 are independently of the other fluorine or chlorine,X.sup.3 is fluorine or chlorine or else--if E is C--Cl--methylsulfonyl andZ.sup.1 and Z.sup.2 are independently of the other a radical of the formula ##STR2## where L.sup.3 and L.sup.4 are independently of the other hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl,with the proviso that l and n are not simultaneously 0 and that, if E is C--Cl or if n is 0 and Z.sup.1 is the radical of the formula ##STR3## where L.sup.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: September 22, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg L. Jessen, Klaus Pandl, Hermann Loeffler, Bernd Siegel, Manfred Patsch
  • Patent number: 5136028
    Abstract: Novel reactive dyes of formula ##STR1## wherein Z is a radical of formula ##STR2## and R.sub.1, R.sub.2, R.sub.3, (R.sub.4).sub.2-3, (R.sub.5).sub.1-3, R.sub.7 and (R.sub.8).sub.1-3 are as defined in claim 1, give intense red dyeings and prints of good fastness properties on cellulosic fibres.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: August 4, 1992
    Assignee: Ciba-Geigy Corporation
    Inventor: Herbert Seiler
  • Patent number: 5128456
    Abstract: Novel reactive dyes of the formula ##STR1## in which (R).sub.0-3 is 0-3 substituents R, independent of one another, from the group comprising halogen, nitro, cyano, trifluoromethyl, sulfamoyl, carbamoyl, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, amino, acetylamino, ureido, hydroxyl, carboxyl, sulfomethyl and sulfo, R.sub.1 is hydrogen, C.sub.1-8 alky or C.sub.5-7 cycloalkyl and R.sub.2 is C.sub.1-8 alkyl or C.sub.5-7 cycloalkyl, it being possible for the alkyl and cycloalkyl radicals R.sub.1 and R.sub.2 to be substituted independently of one another by hydroxyl, C.sub.1-4 alkoxy, hydroxy-C.sub.1-4 alkoxy, HO--(CH.sub.2 CH.sub.2 --O).sub.2-4 --, sulfato-C.sub.1-4 alkoxy, C.sub.2-4 alkanoyl, C.sub.1-4 alkoxy-carbonyl, C.sub.2-4 alkanoyloxy, carboxyl, cyano, halogen, C.sub.1-4 alkylamino, or N,N-Di-C.sub.1-4 alkylamino, or sulfato, or in which R.sub.1 is C.sub.1-8 alkyl or C.sub.5-7 cycloalkyl, and the alkyl or cycloalkyl radical can be substituted as defined, and R.sub.2 is a C.sub.1-8 alkyl or C.sub.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: July 7, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Athanassios Tzikas, Paul Herzig
  • Patent number: 5116957
    Abstract: Reactive azo dyestuffs of the formula ##STR1## wherein R, Z and A have the meaning indicated in the description, and their use for dyeing and printing materials containing hydroxyl groups or amide groups, such as textile fibers, filaments and fabrics of wool, silk and synthetic polyamide fibers and polyurethane fibers, and for dyeing and printing natural or regenerated cellulose in shades which are fast to washing.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: May 26, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventor: Horst Jager
  • Patent number: 5116959
    Abstract: A monoazo compound represented by the following formula in a free acid form, ##STR1## wherein R is hydrogen or unsubstituted or substituted C.sub.1 to C.sub.4 alkyl, X is unsubstituted or substituted phentyl or naphthyl, Y is unsubstituted or substituted phenylene or naphthylene, Z is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z.sub.1, in which Z.sub.1 is a splittable group by the action of an alkali, and R.sub.1 and R.sub.2 are independently hydrogen or unsubstituted or substituted C.sub.1 to C.sub.4 alkyl, phenyl or benzyl, excepting the case where R.sub.1 and R.sub.2 are hydrogen, which is useful as reactive dyes of high solubility and good build-up property for giving dyed or printed products of a deep red color excellent in fastness properties.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: May 26, 1992
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshihiko Morimitsu, Naoki Harada, Takashi Omura, Sadanobu Kikkawa
  • Patent number: 5106960
    Abstract: The present invention relates to azo dyes of the formula ##STR1## wherein X is an aryloxy radical or an unsubstituted or substituted C.sub.1 -C.sub.12 alkyl radical, a cycloalkyl radical or an aryl radical or a group of the formula ##STR2## wherein R.sub.1 is hydrogen, unsubstituted or substituted lower alkyl, cycloalkyl or aryl, and R.sub.2 is hydrogen or unsubstituted or substituted lower alkyl, or wherein R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, form a 5- or 6-membered heterocyclic ring which may contain a further hetero-atom, Y is halogen, low molecular alkyl or low molecular alkoxy, and K is the radical of a coupling component of the benzene or naphthalene series or of the heterocyclic series.These dyes yield dyeings of good light- and wetfastness on polyamide material.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: April 21, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Hurter, Dieter Mausezahl
  • Patent number: 5095102
    Abstract: Reactive dyestuffs of the formula ##STR1## in which A=H, halogen, alkyl, alkoxy, acylamino or amino,B=H, alkyl or alkoxy,X=--CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 --Y, whereY=a radical which can be removed under alkaline conditions andZ=a fibre-reactive radical.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: March 10, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Josef Herd, Manfred Hoppe, Hermann Henk, Rolf Brockmann, Frank-Michael Stohr
  • Patent number: 5093482
    Abstract: Reactive dyestuffs of the formula ##STR1## in which the R=C.sub.1 -C.sub.5 -alkyl, cyclohexyl or aryl,R.sub.1 =H or sulpho, halogen (Cl, Br) or C.sub.1 -C.sub.4 -alkyl, gives scarlet dyeings, which are fast to boiling, on fibre materials containing hydroxyl and amide groups.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: March 3, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl H. Schundehutte, Frank-Michael Stohr
  • Patent number: 5091515
    Abstract: A new process for the preparation of substituted 2,4-diamino-6-flurotriazines of the formula ##STR1## in which the substituents have the meanings given in the description, comprises reacting ammonium salts of the formula ##STR2## in an aqueous medium at pH values of about 2.5-10 with 2,4,6-trifluorotriazine in a continuous process. The reaction products can be converted to dyestuffs without isolating the intermediates.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: February 25, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl J. Herd, Hans-Georg Frosch, Hermann Henk, Wolfgang Mullers, Frank-Michael Stohr
  • Patent number: 5091516
    Abstract: Reactive dyes useful for dyeing or printing hydroxyl- or amino-containing organic substrates have the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl,R.sup.4 is C.sub.1 -C.sub.4 -alkoxy, phenoxy or a radical of the formula NL.sup.1 L.sup.2, where L.sup.1 and L.sup.2 are each substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl or substituted or unsubstituted phenyl, or L.sup.1 and L.sup.2 together combine with the nitrogen atom joining them to form a heterocyclic radical, or L.sup.1 may also be hydrogen,R.sup.5 is fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkylsulfonyl, phenylsulfonyl or a radical of the formula ##STR2## A is substituted or unsubstituted C.sub.2 -C.sub.8 -alkylene, Y is vinyl or a radical of the formula --CH.sub.2 --CH.sub.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: February 25, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Siegel, Manfred Patsch
  • Patent number: 5073631
    Abstract: Reactive dyes of the formulaX.sub.1 --NH--CH.sub.2).sub.0-1 A--N.dbd.N--M--N.dbd.N--B--CH.sub.2).sub.0-1 NH--X.sub.2 (1)in which M is twice-coupled 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, 1-amino-8-hydroxynaphthalene-4,6-disulfonic acid, 1-amino-8-hydroxynaphthalene-4-sulfonic acid or 2-amino-5-hydroxynaphthalene-7-sulfonic acid, A and B, independently of each other, are each unsubstituted or substituted phenylene or naphthylene, and X.sub.1 and X.sub.2, independently of each other, are each unsubstituted or substituted amino-fluoro-1,3,5-triazinyl, excluding the reactive dyes of German Offenlegungsschrift 2,738,823, are suitable in particular for dyeing and printing cellulose-containing fibre materials and produce, combined with a high dyeing yield, dyeings and prints having good fastness properties.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: December 17, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Peter Scheibli
  • Patent number: 5047514
    Abstract: Reactive dyes which contain at least one radical of the formula--SO.sub.2 --CH.dbd.CH.sub.2 (1a)or--SO.sub.2 --CH.sub.2 CH.sub.2 --X (1b)and at least one radical of the formula ##STR1## in which X is an inorganic or organic radical detachable under alkaline conditions, R is hydrogen or substituted or unsubstituted C.sub.1-4 -alkyl, Y is oxygen or sulfur and R.sub.1 is a substituted or unsubstituted aliphatic radical, give dyeings or prints having good fastness properties.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: September 10, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Scheibli, Karl Seitz
  • Patent number: 5047515
    Abstract: Monoazo compounds which conform to the general formula (1) given below and are used as fiber-reactive dyes for dyeing carboxamido-containing and/or hydroxy-containing materials, for example wool, synthetic polyamide fibers and in particular cellulose fibers, in fast, predominantly yellowish red, red and orange shades.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: September 10, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Kurt Hussong
  • Patent number: 5037965
    Abstract: A monoazo compound represented by the following formula in the free acid form, ##STR1## wherein D is phenylene or naphthylene, R is hydrogen or alkyl, A is phenylene or naphthylene, Z.sub.1 and Z.sub.2 independently of one another are each vinylsulfonyl, .beta.-sulfatoethylsulfonyl and the like, and X is pyridinio or amino represented by the following formula ##STR2## wherein R.sub.1 and R.sub.2 independently of one another are each hydrogen, alkyl, phenyl, naphthyl or benzyl, which is useful for dyeing or printing fiber materials to give dyed or printed products of red color excellent in fastness properties with excellent build-up, level-dyeing and washing-off properties.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: August 6, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshihiko Morimitsu, Kingo Akahori, Yutaka Kayane, Naoki Harada, Takashi Omura
  • Patent number: 5032140
    Abstract: A reactive dye represented by the formula (I), ##STR1## wherein R represents --NH.sub.2 or --NHC.sub.2 H.sub.4 SO.sub.3 M, and M's independently represent Li.sup..sym., Na.sup..sym., K.sup..sym. or .sup..sym. NH(C.sub.2 H.sub.4 OH).sub.3, provided that at least one of M's represents Li.sup..sym. or .sup..sym. NH(C.sub.2 H.sub.4 OH).sub.3. This reactive dye easily gives a stable liquid composition and is useful to dye cellulosic or polyamide fibers.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: July 16, 1991
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Nobuyuki Yamanaka, Kazuo Hanawa, Eiichi Ogawa
  • Patent number: 5023326
    Abstract: Reactive dyes of the formula ##STR1## in which Y is hydrogen or sulfo, U is --CN, --CONH.sub.2, --SO.sub.3 H, --OH or --OSO.sub.3 H, D is a phenyl or naphthyl radical, which can be substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, carboxyl and sulfo, and which contains at least one reactive radical bound direclty or via a bridge member to a ring carbon atom, or to which a further radical is bound which contains a reactive radical, and u is the number 2, 3, 4 or 5, are suitable in particular for the dyeing or printing of cellulose-containing fiber materials by the exhaust method or by the continuous method and product in combination with a high colorisitc yield dyeings and prints which have good fastness properties.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: June 11, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Athanassios Tzikas, Herbert Seiler
  • Patent number: 5021558
    Abstract: Water-soluble fiber-reactive azo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylemthane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dyes which contain once or twice the group of the general formula ##STR1## in which: R.sup.x and R.sup.z are, independently of one another, hydrogen or lower alkyl, which can be substituted by halogen, hydroxyl, cyano, lower alkoxy, lower alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato;W is fluorine, chlorine, bromine, sulfo, phenylsulfonyl or alkylsulfonyl of 1 to 4 carbon atoms;Y is vinyl, .beta.-substituted, .beta.-thiosulfatoethyl, .beta.-phosphatoethyl, .beta.-alkanoyloxyethyl of 2 to 5 carbon atoms in the alkanoyl radical, .beta.-benozoyloxyethyl, .beta.-(sulfobenzoyloxy)ethyl, .beta.-(p-toluenesulfonyloxy)ethyl or .beta.-halogenoethyl.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: June 4, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Holger M. Buch
  • Patent number: 5021559
    Abstract: Water-soluble azo compounds of the general formula D--N.dbd.N--K are described, which have advantageous fiber-reactive dye properties and dye carboxamido-containing and in particular hydroxy-containing materials, such as wool and in particular cellulose fiber materials, in hues which have high color strength and good fastness properties.In the formula D--N.dbd.N--K, the symbols have the following meanings:D is a radical of the general formula ##STR1## in which Y is a vinyl group or an ethyl group which can be eliminated in the .beta.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: June 4, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Uwe Reiher
  • Patent number: 5010180
    Abstract: Water-soluble azo compounds corresponding to the general formula D--N.dbd.N--K which have advantageous fiber-reactive dyestuff properties and dye materials containing carboxamide groups and in particular materials containing hydroxy groups, such as wool and in particular cellulose fiber materials, in deep fast shades are described.In the formula D--N.dbd.N--K:D is a radical of the general formula ##STR1## in which Y is the vinyl group or an ethyl group in the .beta.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: April 23, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Uwe Reiher
  • Patent number: 5006645
    Abstract: Dyes of the formula ##STR1## wherein K is the radical of a coupling component which can additionally contain azo groups, R is hydrogen or methyl, and Z is a fluorine atom, a substituted or unsubstituted amino group, a substituted or unsubstituted hydroxyl group, a substituted or unsubstituted mercapto group, or a substituted or unsubstituted hydrocarbon radical are distinguished by high reactivity and they produce dyeings of good wet- and light-fastness properties. The dyes of the Formula (I) are suitable for dyeing and printing a very wide variety of materials, such as silk, leather, wool, polyamide and polyurethane fibres, and especially cellulosic materials of fibrous structure, such as liner, cellulose, regenerated cellulose, and in particular cotton. They are suitable both for the exhaust method and for dyeing by the pad-dyeing process. They are also suitable for printing, in particular on cotton.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: April 9, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Karl Seitz
  • Patent number: 5003052
    Abstract: A reactive dye of the formula ##STR1## in which R is a radical of the formula ##STR2## or Z is .beta.-sulfatoethyl, .beta.-thiosulfatoethyl, .beta.-phosphatoethyl, .beta.-acetoxyethyl, .beta.-halogenoethyl or vinyl; V is hydrogen or a radicalZ--SO.sub.2 --CH.sub.2 --CH.sub.2 --in which z is as defined above; R.sub.1 is hydrogen or C.sub.1-6 -alkyl; alk, independently of each other, are polymethylene radicals having 2 to 6 C atoms or their branched isomers; K is a benzene, naphthalene or heterocyclic radical; m is 1 to 6, p is 1 to 6 and q is 1 to 6; and the benzene or naphthalene radical A is further unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.8 -acylamino, C.sub.1 -C.sub.4 -alkylamino, phenylamino, N,N-di-.beta.-hydroxyethylamino, N,N-di-.beta.-sulfatoethylamino, sulfobenzylamino, N,N-disulfobenzylamino, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.4 -alkylsulfonyl, trifluoromethyl, nitro, cyano, halogen, carbamoyl, N-C.sub.1 -C.sub.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: March 26, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 5003053
    Abstract: Water-soluble monoazo compounds of the general formula (1) which dye in fast, mainly red shades materials which contain carboxamide and/or hydroxy groups, preferably in the form of fibers, in particular cellulose fiber materials. ##STR1## in which: Y is .beta.-thiosulfatoethyl, .beta.-phosphatoethyl, .beta.-chloroethyl, vinyl or .beta.-sulfatoethyl,M is hydrogen, an alkali metal or an alkaline-earth metal,D is naphthyl which is substituted by sulfo and/or a group of the formula Y--SO.sub.2 --,or is one of the radicals ##STR2## in which M and Y have one of the above meanings, m is the number zero or 1, R.sup.1 is hydrogen, lower alkyl, lower alkoxy or carboxy, and R.sup.2 is hydrogen, lower alkyl, lower alkoxy, sulfo, carboxy, optionally substituted aryl, hydroxy, nitro or halogen,n is the number zero or 1,R is hydrogen or optionally substituted lower alkyl,R* is hydrogen or optionally substituted lower alkyl,X is fluorine or chlorine,B is a group of the formula ##STR3## in which R.sup.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: March 26, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hartmut Springer, Walter Helmling, Ludwig Schlafer, Werner H. Russ
  • Patent number: 4996304
    Abstract: Reactive dyes of the formula ##STR1## in which D is the radical of a dye of the polyazo or metal complex azo series, R.sub.1 is hydrogen or an unsubstituted or substituted C.sub.1-4 -alkyl radical, and X is the vinyl, .beta.-sulfatoethyl, .beta.-thiosulfatoethyl, .beta.-chloroethyl or .beta.-acetoxyethyl group, are suitable in particular for dyeing and printing cellulose-containing fibre materials by the cold pad-batch method and produce, in high dyeing yields, dyeings and prints having good fastness properties.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: February 26, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Athanassios Tzikas
  • Patent number: 4994562
    Abstract: The fibre-reactive formazan dyes of the formula ##STR1## where B is an aliphatic or sulfo-free aromatic bridge member, R is .alpha.,.beta.-dihalopropionyl, .alpha.-haloacryloyl or haloacetyl, T.sub.1 is halogen, X is halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, cyano or nitro, Y is --CO-- or --SO.sub.2 --, Z is nitrogen or --C--T.sub.2, T.sub.2 is halogen, hydrogen, C.sub.1 -C.sub.4 alkylthio, cyano, formyl or C.sub.1 -C.sub.4 alkylsulfonyl, m is 1, 2 or 3, n is 0, 1 or 2, qu is 0 or 1 and r and s are each eitehr 0 or 1 but never the same as each other, produce dyeings having good fastness properties on nitrogen-containing or hydroxyl-containing fibre materials.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: February 19, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Urs Lehmann
  • Patent number: 4988803
    Abstract: An azo dyestuff of the formula ##STR1## in which u and v=H or SO.sub.3 H and u.noteq.v,R=H, unsubstituted C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkyl substituted by OH, halogen, SO.sub.3 H or OSO.sub.3 H,m=0 or 1 and ##STR2## in which R.sub.1 =H, unsubstituted C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -alkyl substituted by OH, OSO.sub.3 H, SO.sub.3 H or COOH. Such dye is particularly suitable for producing on cotton red dyeings and prints having excellent fiber-dyestuff bond stability, stability to oxidizing agents and wash-off properties.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: January 29, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Frank M. Stohr, Hermann Henk, Karl-Josef Herd
  • Patent number: 4988801
    Abstract: A water-soluble monoazo colorant represented by formula (I) in a form of a free acid: ##STR1## wherein D represents ##STR2## (wherein W.sup.2 represents lower alkoxy; U represents lower alkyl or lower alkoxy; Z represents --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 OSO.sub.3 H and p and q represent each 0 or 1);W.sup.1 represents lower alkoxy; andV represents ##STR3## (wherein X represents halogen; Y represents halogen, sulfo, --OR.sup.1 wherein R.sup.1 represents lower alkyl or lower alkyl substituted by hydroxy, carboxy or sulfo, --O--R.sup.2 O).sub.m R.sup.3 alkyl and m is an integer of 1 to 6, or aliphatic or aromatic amino each substituted by one or two sulfo or carboxy groups);as well as a dyeing process by using the same. These colorants are useful in the dyeing of fibers. These colorants are useful in the dyeing of fibers.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: January 29, 1991
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Toshio Hihara, Kanzi Shimizu, Yukiharu Shimizu
  • Patent number: 4975530
    Abstract: Intermediates useful for the preparation of fiber-reactive dyes having the formula ##STR1## in which Q is phenyl unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, nitro, cyano, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylsulfonyl, sulfo or trihalomethyl; 1- or 2-naphthyl; or unsubstituted or C.sub.1 -C.sub.4 alkyl, nitro, cyano, C.sub.1 -C.sub.4 alkoxycarbonyl or C.sub.1 -C.sub.4 alkylthio substituted furanyl, thienyl, thiazolyl, oxazolyl, isothiazolyl, benzothiazolyl, benzoisothiazolyl, pyrazolyl, imidazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl or 1,3,5-triazinyl, and A.sub.1 and A.sub.2 independently of one another are a radical of the formula ##STR2## in which R.sub.1 and R.sub.2 independently of one another are hydrogen; C.sub.1 -C.sub.4 alkyl unsubstituted or substituted by hydroxyl, sulfo, sulfato, carboxyl, cyano, halogen, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: December 4, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Athanassios Tzikas, Kurt Burdeska
  • Patent number: 4968781
    Abstract: A reactive dye of the formula ##STR1## in which Fa is the radical of an organic dye of the monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide series, T is a negative substituent, one X is a detachable substituent and the other X is a group of the formula ##STR2## A is arylene, V is hydrogen, a substituted or unsubstituted C.sub.1 -C.sub.4 alkyl radical or a radical of the formula --(CH.sub.2).sub.q --SO.sub.2 --Z, Z is a --CH.dbd.CH.sub.2 or CH.sub.2 --Y radical and Y is an inorganic or organic radical which is detachable under alkaline conditions, q, m and n are independently of one another an integral number from 2 to 6, R and R' are independently of one another hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, and r is 1 or 2.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: November 6, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl Seitz, Karl Hoegerle
  • Patent number: 4955987
    Abstract: The invention describes a process for the preparation of concentrated aqueous, substantially salt-free solutions of aminotriazinyl reactive dyes, which process comprises starting from a dye which contains sulfo groups and one or more radicals capable of reaction with cyanuric halide, said dye being at least partly in the form of the ammonium salt, reacting said dye with cyanuric halide, in the presence of lithium hydroxide, and deionizing and concentrating the salt-containing synthesis solution by a membrane separation process.The so prepared mixed lithium/ammonium salts of the acid aminotriazinyl reaction dyes are readily water soluble and are suitable for the preparation of concentrated storage stable dye solutions.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: September 11, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Roger Lacroix, Edmond Ruhlmann