Thiazoles (including Hydrogenated) Patents (Class 8/691)
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Patent number: 5342928Abstract: Azo dyes useful for dyeing or printing textile fibers or fabrics and containing novel aminobenzo heterocycles as diazo component have the formula ##STR1## where X is nitrogen or a radical of the formula CR.sup.6, where R.sup.6 is hydrogen, C.sub.1 -C.sub.4 -alkoxycarbonyl or C.sub.1 -C.sub.6 -alkanoyl,R.sup.1 and R.sup.2 are substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl or substituted or unsubstituted C.sub.3 -C.sub.4 -alkenyl or additionally in the case of R.sup.1 hydrogen,R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkoxy,R.sup.4 is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.4 -alkoxy, substituted or unsubstituted C.sub.1 -C.sub.8 -alkanoylamino, C.sub.1 -C.sub.4 -alkylsulfonylamino, C.sub.3 -C.sub.4 -alkenoylamino or substituted or unsubstituted C.sub.1 -C.sub.4 -alkoxycarbonylamino, andR.sup.5 is hydrogen, nitro, halogen, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio or cyano.Type: GrantFiled: April 30, 1993Date of Patent: August 30, 1994Assignee: BASF AktiengesellschaftInventors: Thomas Roetsch, Helmut Hagen, Helmut Reichelt, Clemens Grund
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Patent number: 5206375Abstract: The novel compound of the general formula I ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 Y or unsubstituted or substituted hydroxyl or mercapto, Y is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, R is hydrogen, C.sub.1 -C.sub.4 -alkyl or a radical which can be introduced by electrophilic substitution or a radial of the formula --CH.dbd.T, in which T is a radical of a methyleneactive compound or of an amine, and R.sup.1 is hydrogen, acyl or unsubstituted or substituted alkyl, cycloalkyl or alkenyl, and R.sup.2 is hydrogen or unsubstituted or substituted alkyl or alkenyl, or R.sup.1 and R.sup.2 together with the nitrogen form a saturated heterocyclic structure and R.sup.1 and R.sup.2 together form a radical of the formula ##STR2## are useful as diazo and/or coupling components or generally as dye intermediates, depending on their constitution.Type: GrantFiled: April 8, 1992Date of Patent: April 27, 1993Assignee: BASF AktiengesellschaftInventors: Ernst Schefczik, Karl-Heinz Etzbach, Heinz Eilingsfeld
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Patent number: 5175265Abstract: Benzisothiazole-azo dyes useful for dyeing synthetic fiber materials have the formula ##STR1## where X is hydrogen, chlorine, bromine, cyano or nitro and K is a radical of the formula ##STR2## where R.sup.1 is substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl, substituted or unsubstituted phenyl, C.sub.3 -C.sub.5 -alkenyl or C.sub.5 -C.sub.7 -cycloalkyl,R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.3 is hydrogen or methyl andR.sup.4 is hydrogen, cyano, carbamoyl or C.sub.1 -C.sub.4 -alkoxycarbonyl.Type: GrantFiled: March 5, 1990Date of Patent: December 29, 1992Assignee: BASF AktiengesellschaftInventors: Guenter Hansen, Helmut Hagen, Helmut Reichelt
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Patent number: 5163972Abstract: Process to dye polyacrylonitrile in blue shades with cationic dye compounds: substituted benzothiazolium azo N-alkyl-N-hydroxyalkyl alkyl-aniline salts.Type: GrantFiled: December 3, 1990Date of Patent: November 17, 1992Assignee: Ciba-Geigy CorporationInventors: Wilfried Herter, Josef Koller
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Patent number: 5143519Abstract: Concentrated dye solutions of dyes of the formula (1) shown in claim are described.The dye solutions are distinguished by a good storage stability and are suitable, in particular, for dyeing paper.Type: GrantFiled: March 29, 1991Date of Patent: September 1, 1992Assignee: Ciba-Geigy CorporationInventor: Willy Stingelin
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Patent number: 5112362Abstract: Dye mixtures useful for dyeing or printing synthetic fabrics contain at least one azo dye whose diazo component is 2-amino-3,5-dicyano-4-methylthiophene and whose coupling component comes from the 2-amino-4-thienylthiazole series and also at least one azo dye whose diazo component is 2-amino-3,5-dicyano-4-methylthiophene, 2-amino-3-alkoxycarbonyl-5-cyano-4-methylthiophene or 2-amino-5-alkoxycarbonyl-3-cyano-4-methylthiophene and whose coupling component comes from the 3-cyano-4-methyl-2,6-diaminopyridine series, and/or at least one azo dye whose diazo component is a 2,6-dicyano-4-alkylaniline and whose coupling component comes from the m-phenylenediamine series.Type: GrantFiled: April 2, 1991Date of Patent: May 12, 1992Assignee: BASF AktiengesellschaftInventors: Erwin Hahn, Guenter Hansen, Gunther Lamm, Helmut Reichelt, Gerhard Wagenblast
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Patent number: 4995885Abstract: Concentrated dye solutions of the formula (1) shown in claim 1 are described.The dye solutions are notable for a long shelf life and are suitable in particular for dyeing paper.Type: GrantFiled: November 13, 1989Date of Patent: February 26, 1991Assignee: Ciba-Geigy Corp.Inventor: Hans Morawietz
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Patent number: 4968318Abstract: Mixtures of at least two different dyestuffs of the formulae ##STR1## in which the symbols have the meanings mentioned in the text represent a low-priced replacement for the known anthraquinone dyestuff Disperse Red 60.In the dyeing of mixed yarn, they are even superior with respect to sublimation fastness and cotton staining.Type: GrantFiled: December 19, 1989Date of Patent: November 6, 1990Assignee: Bayer AktiengesellschaftInventors: Dieter Wiegner, Wolf-Dieter Elsner
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Patent number: 4931067Abstract: Method is set forth of dyeing a material comprising forming a solution having a basic salt of a water soluble dye of the formula: ##STR1## wherein n is 0 or 1;m is 0 or 1;m=1 when n=0;p=0 when m=1;p=1 when m=0;the subscripts 1 and 0 indicating, respectively, the presence and absence of the substituent subscripted;Y is CR.sub.2 COO, CR.sub.2 CR.sub.2 COO or CR.sub.2 CR.sub.2 CR.sub.2 COO;each R is independently hydrogen, methyl, ethyl, phenyl or phenyl substituted with methyl, ethyl, halo, cyano, ethynyl or nitro;G is CR, CR.sub.2 CR, CRCR.sub.2, CR.sub.2 CR.sub.2 CR, CR.sub.2 CRCR.sub.2 or CRCR.sub.2 CR.sub.2 ;E is OH, SH or NH.sub.Type: GrantFiled: March 27, 1987Date of Patent: June 5, 1990Assignee: SRI InternationalInventor: Ronald Swidler
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Patent number: 4889535Abstract: Compounds of the formula ##STR1## and mixtures thereof, wherien p1 R.sub.1 is hydrogen, chloro or bromo, p1 R.sub.2 is hydrogen, chloro, bromo or nitro, p1 R.sub.3 is hydrogen, chloro, bromo, nitro or --SCN, p1 R.sub.4 is hydrogen, chloro or bromo, p1 R.sub.5 is hydrogen or C.sub.1-4 alkyl, and p1 R.sub.5 is C.sub.8-14 alkyl,with the provisos that (i) at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is other than hydrogen, (ii) when R.sub.3 is nitro or --SCN, R.sub.2 is other than nitro, and (iii) when two or more of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are halo, then R.sub.3 is one of those halos, are useful as disperse dyes for dyeing substrates such as synthetic and semi-synthetic, hydrophobic, high molecular weight organic materials.Type: GrantFiled: March 13, 1987Date of Patent: December 26, 1989Assignee: Sandoz Ltd.Inventor: Beat Henzi
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Patent number: 4877412Abstract: Compounds of the formula ##STR1## in free acid or salt form and internal, external and acid addition salts thereof, whereinK is ##STR2## wherein R.sub.3 -R.sub.5, R.sub.20, R.sub.21 and X-Z are as defined in the specification,each of Q.sub.1 and Q.sub.2 is independently hydrogen or --SO.sub.3 M.sub.1,each R.sub.1 and R.sub.2 is independently hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or --COOM, andn is 0 or 1,wherein each M and M.sub.1 is independently hydrogen or a nonchromophoric cation, with the provisos that (i) the compound contains at least one --SO.sub.3 M or --SO.sub.3 M.sub.1 group, (ii) when K is a gruop of Formula (a), at least one of R.sub.4 and R.sub.5 is hydrogen, (iii) the total number of anionic groups equals or exceeds the total number of basic and cationic groups, (iv) the positive charge of each cationic group is balanced by the negative charge of an --SO.sub.3.sup..crclbar. or --COO.sup..crclbar.Type: GrantFiled: March 31, 1988Date of Patent: October 31, 1989Assignee: Sandoz Ltd.Inventor: Reinhard Pedrazzi
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Patent number: 4820809Abstract: Novel compounds of the general formula I ##STR1## where X is hydrogen, nitro or unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aryl or hetaryl, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, R is unsubstituted or substituted alkyl or aryl, R.sup.1 is hydrogen or R.sup.2, and R.sup.2 is unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl or aryl, are useful for dyeing textile fibers, in particular polyesters.Type: GrantFiled: January 11, 1988Date of Patent: April 11, 1989Assignee: BASF AktiengesellschaftInventors: Udo Bergmann, Erwin Hahn, Guenter Hansen
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Patent number: 4774324Abstract: Compounds of the general formula I ##STR1## where X is unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl, Y is chlorine, bromine, carbamyl or cyano, Z is hydrogen, carbamyl, cyano or acetyl, R is hydrogen or C.sub.1 -C.sub.3 -alkyl, R.sup.1 and R.sup.3 independently of one another are each hydrogen or unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl or aryl, R.sup.2 is hydrogen or unsubstituted or substituted alkyl and R.sup.1 and R.sup.2, together with the nitrogen atom, form a saturated 5-membered or 6-membered ring, are particularly useful for dyeing textile fibers.Type: GrantFiled: March 7, 1986Date of Patent: September 27, 1988Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Ernst Schefczik
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Patent number: 4773915Abstract: Azo dyestuffs of the formula ##STR1## wherein R.sub.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxyethoxy andX denotes acyl,are distinguished by good levelling properties and good allround fastness properties. They dye polyester fibres in a bright blue shade.Type: GrantFiled: January 7, 1987Date of Patent: September 27, 1988Assignee: Bayer AktiengesellschaftInventors: Winfried Kruckenberg, Klaus Leverenz, Hans-Gunter Otten
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Patent number: 4764178Abstract: A thermal transfer printing sheet comprising a substrate having a coating comprising at least one azo dye of the formula:A--N.dbd.N--E Iwherein:A is the residue of a diazotizable heteroaromatic amine, A--NH.sub.2, in which A is selected from imidazolyl, pyrazolyl, thiazolyl, benzothiazolyl, isothiazolyl, benzoisothiazolyl, pyridoisothiazolyl and thienyl; andE is the residue of an aromatic coupling component, E--X wherein X is a group displaceable by a diazotized aromatic amine and E is optionally substituted aminophenyl, tetrahydroquinolinyl, julolidyl or aminoquinolinyl,and a process for the transfer of dye from the transfer sheet to a receiver sheet by the selective application of heat to the transfer sheet while it is contact with the receiver sheet.Type: GrantFiled: August 13, 1986Date of Patent: August 16, 1988Assignee: Imperial Chemical Industries PLCInventors: Peter Gregory, Raymond L. White
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Patent number: 4734101Abstract: A monoazo dye for polyester fiber represented by formula ##STR1## and having a crystal modification characterized by an X-ray diffraction spectrum (CuK.alpha.) showing a very strong peak at an angle of diffraction (2.theta.) of about 14.2.degree., a strong peak at about 24.5.degree., and four weak peaks at about 16.9.degree., 23.6.degree., 25.3.degree., and 26.8.degree.. The monoazo dye exhibits excellent dispersibility to effect level dyeing even under high temperature and severe conditions and provides a dyed material excellent in light fastness and rubbing fastness, as well as wet fastness after post-finish.Type: GrantFiled: December 29, 1986Date of Patent: March 29, 1988Assignee: Mitsubishi Chemical Industries LimitedInventors: Kiyoshi Himeno, Junji Yoshihara, Masateru Ishida
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Patent number: 4722737Abstract: The azo dyestuff of the formula ##STR1## having the interplanar spacings D/.ANG. 3.13, 3.36, 4.85, 9.26 and 13.94 for the five strongest lines having the relative intensity use 98, 89, 82, 100 and 87 is distinguished, compared to known modifications by an increased dye bath stability.Type: GrantFiled: February 10, 1987Date of Patent: February 2, 1988Assignee: Bayer AktiengesellschaftInventors: Horst Brandt, Klaus Leverenz
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Patent number: 4694075Abstract: The compounds of the formula ##STR1## where Y is hydrogen, chlorine, bromine or nitro, Z is hydrogen, chlorine, bromine, a sulfonic ester group or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may not be interrupted by oxygen or ##STR3## m is 0 or 1, p is 1 or 2, R.sup.1 and R.sup.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl, or aryl, or R.sup.1 and R.sup.2 together with the nitrogen form a heterocyclic structure, R.sup.3 is hydrogen or unsubstituted or substituted alkyl, R.sup.6 and R.sup.7 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkoxy or acylamino, K is a radical of a coupling component, A.crclbar. is an anion, R.sup.4 is unsubtituted or substituted alkyl and R.sup.5 is hydrogen or C.sub.1 -C.sub.Type: GrantFiled: January 21, 1986Date of Patent: September 15, 1987Assignee: BASF AktiengesellschaftInventors: Horst Colberg, Erwin Hahn
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Method for dyeing polyester fiber materials: disperse dye combinations with compensated color fading
Patent number: 4626257Abstract: A method for dyeing polyester fiber materials is disclosed, comprising conducting combination dyeing by a combination of disperse dyes each capable of making up for the color fading of other disperse dye produced upon exposure to sunlight, by the color change thereof in hue caused upon the exposure to sunlight under the same condition.Type: GrantFiled: May 10, 1985Date of Patent: December 2, 1986Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshikazu Matsuo, Toshio Nakamatsu, Toshikazu Moriwaki, Sadaharu Abeta, Kunihiko Imada -
Patent number: 4529406Abstract: A monoazo compound of the formula, ##STR1## wherein X is hydrogen atom or lower alkyl group; Z is hydrogen atom, halogen atom, alkyl group, acylamino group, benzoylamino group or alkylsulfonylamino group; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently are hydrogen atom or alkyl group, provided that R.sub.1, R.sub.2, R.sub.3 and R.sub.4 cannot simultaneously be hydrogen atoms; and R.sub.5 is hydrogen atom, alkyl group, substituted alkyl group, alkenyl group, cycloalkyl group, aralkyl group or phenyl group.Type: GrantFiled: July 18, 1983Date of Patent: July 16, 1985Assignee: Research Association of Dyestuff ManufacturersInventors: Kiyoyasu Hashimoto, Akira Murata, Kiyoteru Kojima, Toshio Nakamatzu, Akira Takeshita
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Patent number: 4509948Abstract: Cationic dyestuffs of the general formula ##STR1## wherein D is the radical of a diazo component free of anionic groups,X is a radical of the formula COCH.sub.3, CN, COOCH.sub.3, COOC.sub.2 H.sub.5, CONH.sub.2 or COC.sub.6 H.sub.5,R.sub.1 and R.sub.2 independently of each other are hydrogen or a nonionic substituent andR.sub.3, R.sub.4 and R.sub.5 independently of one another are alkyl, alkenyl or aralkyl, orR.sub.3 and R.sub.4, together with the nitrogen to which they are bonded, form a 5- or 6-membered heterocyclic ring,n is 1 or 2 andAn.sup.(-) is an anion, andwherein the cyclic and acyclic radicals can in turn be substituted, are used for dyeing synthetic and natural cationically dyeable materials, such as cotton, paper, leather, polyacrylnitrile or acid-modified polyester or polyamide fibres.Type: GrantFiled: August 5, 1983Date of Patent: April 9, 1985Assignee: Bayer AktiengesellschaftInventors: Peter Wild, Frank-Michael Stohr
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Patent number: 4504273Abstract: The invention relates to reactive dyes of the formula ##STR1## wherein R.sub.1 is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 alkyl or phenyl, R.sub.2 is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 alkyl, R.sub.3 is hydrogen, cyano, carbamoyl or sulfomethyl, R.sub.4 and R.sub.5 are each independently hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, carboxy or sulfo, X is fluorine, chlorine or bromine, and Z is an unsubstituted or substituted benzthiazolyl-(2)-phenyl radical, which are suitable for dyeing or printing cellulosic fibers and produce brilliant greenish yellow dyeings.Type: GrantFiled: August 22, 1983Date of Patent: March 12, 1985Assignee: Ciba-Geigy CorporationInventors: Rainer Begrich, Jean-Francois Landre
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Patent number: 4464181Abstract: Dye mixtures which comprise two or more dyes of the formula ##STR1## ps where X is hydrogen, methyl or chlorine, and R is a radical of the formula OR.sup.1, OCOCH.sub.3, OCOC.sub.2 H.sub.5, R.sup.1 being hydrogen or C.sub.1 -C.sub.4 -alkyl, are very useful for dyeing cellulose esters.Type: GrantFiled: January 11, 1983Date of Patent: August 7, 1984Assignee: BASF AktiengesellschaftInventors: Helmut Degen, Johannes P. Dix, Norbert Grund, Guenter Hansen, Reinhold Krallmann
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Patent number: 4451398Abstract: Dyes of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl, R.sup.2 and R.sup.3 independently of one another are hydrogen, C.sub.1 -C.sub.5 -alkyl or C.sub.2 -C.sub.5 -alkenyl, R.sup.4 is C.sub.1 -C.sub.12 -alkyl or hydroxy-C.sub.2 -C.sub.4 -alkyl, X.sup..crclbar. is one equivalent of an anion, mis from 0 to 5 and n is from 0 to 5, with 1.ltoreq.(m+n).ltoreq.5, and F is an (m+n)-valent radical of a monoazo dye, a disazo dye, a polyazo dye, a quinophthalone, a bis-dioxazine, a compound of the 5,6-arylo-2-pyrone series, a naphtholactam dye, a triphenylmethane dye, a xanthene dye, a phthalocyanine, an indigoid, an anthraquinone dye containing one or more phenyl or naphthyl groups, a more highly fused carbonyl-containing dye, a quinacridone, a perylene-3,4,9,10-tetracarboxylic acid diimide, an anthrapyrimidine, a pyrazoloanthrone, a diaminonaphthoquinone, a naphthazarine or a naphthalene-1,4,5,8-tetracarboxylic acid diimide.Type: GrantFiled: February 11, 1981Date of Patent: May 29, 1984Assignee: BASF AktiengesellschaftInventors: Manfred Patsch, Manfred Ruske
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Patent number: 4440681Abstract: Water-insoluble azo dyestuffs, their manufacture and use, which have the formula ##STR1## wherein D is a substituted phenyl or heterocyclic moiety which are free from ionic substituents and R.sup.1 is methyl or ethyl.Type: GrantFiled: April 24, 1981Date of Patent: April 3, 1984Assignee: Cassella AktiengesellschaftInventors: Horst Tappe, Rudolf Lowenfeld, Uwe Kosubek, Maria Kallay
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Patent number: 4425133Abstract: The dyes of the formula I indicated in patent claim 1 are suitable for dyeing furs and especially leather. They are preferably used as a mixture with a blue dye and a yellow dye for dyeing leather by the trichromatic process.Type: GrantFiled: March 19, 1982Date of Patent: January 10, 1984Assignee: Ciba-Geigy CorporationInventor: Alois Puntener
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Patent number: 4416665Abstract: Water-insoluble azo dyestuff of the formula ##STR1## its manufacture and its use as the dyestuff in the dyeing and printing of hydrophobic fiber materials.Type: GrantFiled: September 21, 1981Date of Patent: November 22, 1983Assignee: Cassella AktiengesellschaftInventors: Horst Tappe, Kurt Roth
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Patent number: 4406661Abstract: Azo dyestuffs free from groups imparting solubility in water are used in the process for the production of white or variously colored designs on a colored substrate on textile materials containing hydrophobic, synthetic fibers by impregnating the materials with dye liquors containing dyeing auxiliaries and padding auxiliaries as well as dyestuffs which are dischargeable to white, drying or incipiently drying the impregnated materials, printing the materials with an alkaline discharge reserve paste which contains a discharging agent, and subsequently subjecting the materials to a heat treatment at temperatures from 100.degree. to 230.degree. C., wherein said discharging agent is a base which produces a pH value of at least 8 in a 5% strength aqueous solution and the dyestuffs which are dischargeable to white are of the formulaD--N.dbd.N--K--NHSO.sub.Type: GrantFiled: June 10, 1982Date of Patent: September 27, 1983Assignee: Cassella AktiengesellschaftInventors: Ulrich Buhler, Joachim Ribka, Horst Tappe, Kurt Roth
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Patent number: 4389215Abstract: Anthraquinone-azomethine compounds of the formula ##STR1## or of the tautomeric formula ##STR2## or of the tautomeric formula ##STR3## in which A denotes an anthraquinone radical which is free from sulphonic acid groups and optionally further substituted and which preferably consists of at most 5 fused rings,R.sub.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, hydroxy-C.sub.1 -C.sub.4 -alkyl, optionally substituted phenyl, carboxyl, carboxylic acid, C.sub.1 -C.sub.4 -alkyl ester or hydroxyl,R.sub.2 denotes hydrogen, halogen, nitro, cyano, optionally substituted carbamoyl or optionally substituted sulphamoyl, sulphonic acid C.sub.1 -C.sub.4 -alkyl ester, sulphonic acid aryl ester, C.sub.1 -C.sub.4 -alkylcarbonyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, optionally substituted benzoyl, alkyl or optionally substituted phenyl sulphone, or a hetero-aromatic radical, for example a radical of the formula ##STR4## or of the formula ##STR5## or of the formula ##STR6## R.sub.Type: GrantFiled: September 24, 1981Date of Patent: June 21, 1983Assignee: Bayer AktiengesellschaftInventors: Rutger Neeff, Meinhard Rolf, Walter Muller
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Patent number: 4349348Abstract: Improved textile materials are produced having white or variously colored designs on a colored substrate on textile materials containing hydrophobic, synthetic fibers by impregnating the materials with dye liquors containing dyeing and padding auxiliaries as well as dyestuffs dischargeable to white, drying or incipiently drying the impregnated materials and then printing a desired pattern onto the materials with a discharge reserve paste containing a discharging agent, and subsequently subjecting the materials to a heat treatment at temperatures from 100.degree. to 230.degree. C., the improvement comprises the dyestuffs dischargeable to white being dyestuffs of the formula ##STR1## wherein n is a number from 1 to 9; and said discharging agent being a base which produces a pH value of at least 8 in a 5% strength aqueous solution.Type: GrantFiled: May 18, 1981Date of Patent: September 14, 1982Assignee: Cassella AktiengesellschaftInventors: Horst Tappe, Horst Kindler, Kurt Roth, Hans-Jurgen Weyer
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Patent number: 4314817Abstract: Compounds of the formula ##STR1## in which R is --CH.sub.3, --C.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 OH, --CH.sub.2 CH(OH)CH.sub.3 or --CH.sub.2 CH.dbd.CH.sub.2 ;R.sub.1 is --H or --CH.sub.3 ;R.sub.2 is --H or --CH.sub.3 ;R.sub.3 is --OCH.sub.3 or --OC.sub.2 H.sub.5 ;R.sub.4 is --H, --CH.sub.3, --C.sub.2 H.sub.5, n- or i- C.sub.3 H.sub.7, --CH.sub.2 CH.sub.2 OH or --CH.sub.2 CH.dbd.CH.sub.2 ;R.sub.5 is --H, --CH.sub.3, --C.sub.2 H.sub.5, n- or i- C.sub.3 H.sub.7 or R.sub.3 and R.sub.5 together with the N-atom to which R.sub.5 is attached and ring B form the group ##STR2## wherein R.sub.2 and R.sub.4 are as defined above, andR.sub.6 is --H or CH.sub.3 ; andA.sup..crclbar. is an anion,which are suitable for use as dyes, particularly for dyeing textile substrates comprising or consisting of homopolymers and copolymers of acrylomotrile or asymmetric dicyanoethylene, polyamides modified to contain acid groups and polyesters modified to contain acid groups and for leather, paper and plastics.Type: GrantFiled: August 11, 1980Date of Patent: February 9, 1982Assignee: Sandoz Ltd.Inventor: Berthold Gertisser
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Patent number: 4300901Abstract: A liquid dyestuff composition, especially suitable for dyeing paper, comprises:(a) 5-40% by weight of a dyestuff having the formula: ##STR1## wherein X is hydrogen or an alkali metal cation, n represents an integer from 1 to 2, Q and Q.sub.1 together form a fused benzene or naphthalene residue, and Y is a residue having the formula ##STR2## whereby ring A, the fused residue formed by Q and Q.sub.1, or the residue Y can each be further substituted by one or more alkyl, alkoxy, hydroxy, carboxy or dehydrothio-p-toluidine groups or halogen atoms;(b) 1-10% by weight of an alkali metal hydroxide;(c) 45-75% by weight of a polyhydric alcohol or a water-soluble ether thereof; and(d) 0-40% by weight of water.Type: GrantFiled: May 27, 1980Date of Patent: November 17, 1981Assignee: Ciba-Geigy CorporationInventors: Brian L. Yates, Malcolm C. Clark