Patents by Inventor Robert Kuth
Robert Kuth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4676803Abstract: The invention is directed to reactive azo dyestuffs, free from anionic groups and which contain a basic group and a halogenotriazinyl radical and are of the general formula ##STR1## in which D is the radical of an organic azo dyestuff which is free from anionic groups and is preferably free from basic groups,B is a direct bond or a bridge member to a ring C atom of D,R.sub.1 is H, alkyl, aralkyl or aryl andW is a halogenotriazinyl radical containing a basic group; the dyestuffs are useful for the dyeing and printing of fibre materials containing cellulose.Type: GrantFiled: May 14, 1986Date of Patent: June 30, 1987Assignee: Bayer AktiengesellschaftInventors: Wolfgang Harms, Robert Kuth, Klaus Wunderlich
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Patent number: 4544372Abstract: The light fastness of dyed polyamide fibre materials, in particular of the type used for manufacturing car seat covers, can be substantially improved by treating these materials, before, during or after the dyeing, with copper compounds of the compounds of the formula ##STR1## wherein R=H, OH, alkyl or cycloalkyl. The compounds (I) are distinguished by low self-colour and good stability to acid conditions.Type: GrantFiled: December 2, 1983Date of Patent: October 1, 1985Assignee: Bayer AktiengesellschaftInventors: Klaus-Peter Heise, Robert Kuth, Karl Neufang, Hellmuth Pantke, Karlfried Wedemeyer
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Patent number: 4502863Abstract: Solid dyestuff formulations having excellent dyebath stability are obtained in an economical manner by mixing a water-insoluble textile dyestuff with a dispersant and a carboxyl-containing copolymer of(a) an .alpha.,.beta.-ethylenically unsaturated monocarboxylic acid,(b) a non-basic ester of an .alpha.,.beta.-ethylenically unsaturated monocarboxylic acid, and(c) an unsaturated aliphatic or aromatic hydrocarbon or acrylonitrile,bead-milling the mixture down to a particle size of, preferably, 1-2.mu., and then spray-drying the ground mixture. If desired the dispersant can also be added during the synthesis of the dyestuff, as a consequence of which early addition the milling process can be dispensed with.Type: GrantFiled: June 3, 1983Date of Patent: March 5, 1985Assignee: Bayer AktiengesellschaftInventors: Wolfgang Bornatsch, Robert Kuth, Hermann Perrey
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Patent number: 4503224Abstract: Reactive dyestuffs which are free from anionic groups, in particular sulpho and carboxyl groups, and contain a basic group and a halogenotriazinyl radical, and their use for dyeing and printing synthetic fibre materials. The dyeing obtained are distinguished by good fastness properties, of which, in addition to fastness to sublimation, light and dry cleaning, fastness to wet processing is to be singled out in particular.Type: GrantFiled: June 16, 1980Date of Patent: March 5, 1985Assignee: Bayer AktiengesellschaftInventors: Wolfgang Harms, Robert Kuth, Klaus Wunderlich
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Patent number: 4294579Abstract: Padding liquors or printing pastes which contain at least one compound which is free from ionic groups and possesses one or more glycicyl radicals are used for the one-bath, single-stage dyeing and printing of textile sheet-like structures of cellulose fibres or fibre blends containing cellulose fibres with water-insoluble reactive disperse dyestuffs in the absence of alkalis or alkaline compounds.Type: GrantFiled: August 27, 1979Date of Patent: October 13, 1981Assignee: Bayer AktiengesellschaftInventors: Udo-Winifred Hendricks, Dietrich Hildebrand, Robert Kuth
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Patent number: 4290768Abstract: In order to dye and print cellulose fibres, which have been swollen with water-miscible swelling agents, or fibre mixtures containing such cellulose fibres, the fibres are treated with a dyestuff of the general formula ##STR1## wherein A denotes an optionally substituted anthraquinone radical, which can contain a further fused ring,X denotes oxygen or sulphur,Z denotes a mononuclear or binuclear aryl radical andn denotes 1 or 2,and the dyestuff is fixed by means of a heat treatment.Type: GrantFiled: January 7, 1980Date of Patent: September 22, 1981Assignee: Bayer AktiengesellschaftInventors: Rutger Neeff, Robert Kuth, Werner Kuhnel, Wilhelm Gohrbandt
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Patent number: 4278434Abstract: Dyestuffs of the formula ##STR1## wherein R represents C.sub.1 -C.sub.5 -alkyl which is optionally substituted by fluorine, chlorine, hydroxyl or methoxy,are outstandingly suitable for printing polymeric materials in accordance with the transfer printing principle in that they produce intensely colored prints on these materials, especially on polyester and polyamide fibre materials.Type: GrantFiled: February 11, 1980Date of Patent: July 14, 1981Assignee: Bayer AktiengesellschaftInventors: Friedrich W. Krock, Rutger Neeff, Robert Kuth
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Patent number: 4277245Abstract: In order to dye and print cellulose fibres swollen with water-miscible swelling agents or fibre blends containing these fibres, the fibres are treated with a dyestuff of the general formula ##STR1## wherein Pc denotes the radical of a Cu phthalocyanine,Ni phthalocyanine or Co phthalocyanine molecule,Ar denotes aryl,Z.sup.(+) denotes a hydrogen ion, an alkali metal ion or an ammonium ion,Hal denotes chlorine or bromine,x denotes a number from 2 to 4,y denotes 0 or 1 andx+y.ltoreq.4, andz denotes a number from 0 to 4,and the dyestuff is fixed by heat treatment.Type: GrantFiled: February 22, 1980Date of Patent: July 7, 1981Assignee: Bayer AktiengesellschaftInventors: Manfred Groll, Werner Kuhnel, Robert Kuth
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Patent number: 4268266Abstract: Padding liquors or printing pastes which contain at least one compound which is free from ionic groups and possesses one or more glycidyl radicals are used for dyeing and printing cellulose fibres or textile materials containing cellulose fibres with water-soluble reactive dyestuffs in the absence of alkalis or alkaline compounds.Type: GrantFiled: August 27, 1979Date of Patent: May 19, 1981Assignee: Bayer AktiengesellschaftInventors: Udo-Winfried Hendricks, Dietrich Hildebrand, Robert Kuth
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Patent number: 4256460Abstract: For dyeing and printing cellulose fibres which have been swollen with water-miscible swelling agents or mixed fibres containing these fibres, the fibres are treated with dyestuffs which are free from sulphonic acid groups and carboxylic acid groups, of the general formula ##STR1## wherein R represents optionally substituted C.sub.1 -C.sub.6 -alkyl, cyclohexyl, C.sub.1 -C.sub.4 -alkoxy, phenyl, benzyl, phenylethyl, phenylpropyl or phenoxy, or chlorine or bromine,n represents 0, 1 or 2,one X represents OH and the other X represents NO.sub.2, NH.sub.2 or R'-CONH and R' represents optionally substituted C.sub.1 -C.sub.4 -alkyl or phenyl,and the dyestuffs are fixed by heat treatment.Type: GrantFiled: October 4, 1979Date of Patent: March 17, 1981Assignee: Bayer AktiengesellschaftInventors: Gunter Gehrke, Werner Kuhnel, Robert Kuth
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Patent number: 4255151Abstract: In order to dye and print cellulose fibres swollen with water-miscible swelling agents or mixed fibres containing these fibres, the fibres are treated with dyestuffs which are free from sulphonic acid groups and carboxylic acid groups, of the general formula ##STR1## wherein R denotes hydrogen or optionally substituted alkyl, aryl or acyl,Hal denotes chlorine or bromine,n denotes a number from 0 to 2 and the ring B can optionally be further substituted or fused, with the proviso that if R denotes hydrogen or methyl, n must be >0 and/or B must be further substituted,and the dyestuffs are fixed by heat treatment.Type: GrantFiled: October 4, 1979Date of Patent: March 10, 1981Assignee: Bayer AktiengesellschaftInventors: Volker Hederich, Gunter Gehrke, Robert Kuth, Werner Kuhnel
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Patent number: 4249275Abstract: For dyeing and printing cellulose fibers swollen with water-miscible swelling agents or fibre blends containing these fibres, the fibres are treated with dyestuffs of the general formula ##STR1## wherein R.sub.1 represents aryl,R.sub.2 represents halogen, CN, CF.sub.3, NO.sub.2, Q.sub.1, --OQ.sub.1, --COOQ.sub.1, CONQ.sub.1 Q.sub.2 or --NHCOQ.sub.1,R.sub.3 represents H, halogen, CN, CF.sub.3, Q.sub.1 or --OQ.sub.1 andK represents the radical of a coupling component,whereinQ.sub.1 denotes alkyl or aryl andQ.sub.2 denotes hydrogen, alkyl or aralkyl,and the dyestuffs are fixed by heat treatment.Type: GrantFiled: April 14, 1980Date of Patent: February 10, 1981Assignee: Bayer AktiengesellschaftInventors: Herbert Hugl, Gerhard Wolfrum, Henning Reel, Werner Kunnel, Robert Kuth, Wilhelm Gohrbandt
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Patent number: 3958929Abstract: Pressing of uniform shape and uniform weight of disperse dyestuffs and optical brightening agents with a solubility in water less than 0.5% at 20.degree.C which are suitable for an automate metering step and which disintegrate in aqueous dye baths to give dispersions are manufactured by compressing the dyestuff or brightening agent, an anionic dispersing agent and a solid water-soluble mould release agent which gives a neutral to weakly alkaline reaction in water.Type: GrantFiled: February 8, 1974Date of Patent: May 25, 1976Assignee: Bayer AktiengesellschaftInventors: Reinhold Hornle, Hans-Heinz Molls, Roland Rupp, Robert Kuth