Patents by Inventor Johannes Dehnert
Johannes Dehnert 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: 4965346Abstract: The novel dyes of the general formula I ##STR1## where X is hydrogen or C.sub.1-C.sub.4 -alkyl or is phenyl which is unsubstituted or substituted by fluorine, chlorine, bromine, methyl, methoxy or nitro, Y is cyano, a carboxylic ester group or nitro, Z is cyano, acetyl, benzoyl or unsubstituted or substituted carbamyl, or X and Z or Y and Z may simultaneously be a carboxylic ester group, and R.sup.1 and R.sup.2 independently of one another are each hydrogen or unsubstituted or substituted alkyl or aryl, are very useful for dyeing polyesters, polyester/cellulose blends or thermoplastics.Type: GrantFiled: March 16, 1989Date of Patent: October 23, 1990Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Gunther Lamm, Hermann Loeffler
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Patent number: 4855412Abstract: Compounds of the general formula ##STR1## where D is a radical of the formula ##STR2## and one of the two radicals L.sup.1 and L.sup.2 is unsubstituted amino and the other the radical ##STR3## where R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy-C.sub.2 -C.sub.4 -alkyl or C.sub.1 -C.sub.8 -acyloxy-C.sub.2 -C.sub.4 -alkyl,R.sup.2 is C.sub.2 -C.sub.10 -alkylene or C.sub.2 -C.sub.10 -alkylene is interrupted by oxygen,T is C.sub.1 -C.sub.8 -alkanoyl which is unsubstituted or is substituted by chlorine or methoxy,B.sup.1 is C.sub.1 -C.sub.4 -alkyl or benzyl or phenyl, which are each unsubstituted or are each substituted by methyl, methoxy or chlorine,B.sup.2 is B.sup.1, hydrogen, halogen, cyano or C.sub.1 -C.sub.5 -alkoxycarbonyl,X.sup.1 is hydrogen, nitro, cyano, C.sub.1 -C.sub.9 -alkoxycarbonyl, C.sub.1 -C.sub.9 -mono- or -dialkylaminocarbonyl, trifluoromethyl, methylsulfonyl or ethylsulfonyl,X.sup.2 is nitro or C.sub.1 -C.sub.5 -alkoxycarbonyl,X.sup.3 is X.sup.Type: GrantFiled: April 24, 1987Date of Patent: August 8, 1989Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Gunther Lamm, Hermann Loeffler
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Patent number: 4855413Abstract: The novel dyes of the general formula I ##STR1## where X is hydrogen or C.sub.1 14 C.sub.4 -alkyl or is phenyl which is unsubstituted or substituted by fluorine, chlorine, bromine, methyl, methoxy or nitro, Y is cyano, a carboxylic ester group or nitro, Z is cyano, acetyl, benzoyl or unsubstituted or substituted carbamyl, or X and Z or Y and Z may simultaneously be a carboxylic ester group, and R.sup.1 and R.sup.2 independently of one another are each hydrogen or unsubstituted or substituted alkyl or aryl, are very useful for dyeing polyesters, polyester/cellulose blends or thermoplastics.Type: GrantFiled: April 28, 1988Date of Patent: August 8, 1989Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Gunther Lamm, Hermann Loeffler
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Patent number: 4724259Abstract: 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: GrantFiled: November 21, 1984Date of Patent: February 9, 1988Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Etzbach, Werner Juenemann, Johannes Dehnert
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Patent number: 4650860Abstract: A compound having the formula: ##STR1## where X is hydrogen, chlorine or bromine, B is hydrogen, methyl, ethyl or propyl, and one of the radicals R.sup.1 or R.sup.2 is phenyl which is unsubtituted or mono- or poly-substituted by chlorine, methyl, ethyl, t-butyl, phenoxy, methoxy, ethoxy, propoxy or butoxy, and the other is C.sub.2 -C.sub.8 -alkyl which is unsubstituted or substituted by C.sub.1 -C.sub.8 -alkoxy or phenyl, or is allyl, cyclopentyl, cyclohexyl, methylcyclohexyl, ##STR2## The compounds of formula (I) are used as dyes, preferably for cellulose and cellulose-containing fabrics.Type: GrantFiled: June 26, 1985Date of Patent: March 17, 1987Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Gunther Lamm
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Patent number: 4599402Abstract: The novel compounds of the general formula I ##STR1## where A is a radical of a coupling or diazo component which, if necessary after conversion, is capable of complex formation, Ar is an unsubstituted or substituted aromatic or heterocyclic radical, D is a radical of a diazo component and Me is a Co.sup.2+, Cu.sup.2+, Zn.sup.2+, Mn.sup.2+ or Ni.sup.2+ ion, and the ring B can be further substituted, are very useful for dyeing cellulose fibers, polyesters and blends of cellulose fibers and polyesters.The present dyes are lightfast and fast to washing and to solvents.Type: GrantFiled: October 12, 1984Date of Patent: July 8, 1986Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Werner Junemann
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Patent number: 4430267Abstract: Nickel complexes, obtained by heating one or more compounds of the general formula I ##STR1## where R.sup.1 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, aralkyl, hetaralkyl, aryl or hetaryl,R.sup.2 is hydrogen or methyl and X is fluorine, chlorine, bromine or phenoxy, andthe ring a may additionally carry fused rings or be substituted and, if R.sup.1 is isopropyl or phenyl and the ring a is unsubstituted, R.sup.2 is hydrogen,in an organic solvent, in the presence of an acid acceptor and of a nickel donor, are exceptionally suitable for dyeing, in particular, cellulosic fibers.Type: GrantFiled: February 23, 1981Date of Patent: February 7, 1984Assignee: BASF AktiengesellschaftInventor: Johannes Dehnert
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Patent number: 4424154Abstract: A disazo dye derived from a pyridine coupling component and having the general formula ##STR1## where X is fluorine, chlorine, bromine, methyl, trifluoromethyl, methoxy, cyano, nitro, methylsulfonyl, ethylsulfonyl, phenylsulfonyl, a carboxylic acid ester group of 2 to 11 carbon atoms, carbamoyl or C.sub.1 -C.sub.8 -N-monosubstituted or -N,N-disubstituted carbamoyl or sulfamoyl,Y.sup.1 is hydrogen, chlorine, bromine, nitro, methyl or cyano,Y.sup.2 is hydrogen, chlorine, bromine or methoxy,Z is cyano or carbamoyl,R is hydrogen or C.sub.1 -C.sub.3 -alkyl,R.sup.1 is hydrogen, methyl, ethyl or C.sub.1 -C.sub.4 -alkoxy,R.sup.2 is methyl, ethyl or C.sub.1 -C.sub.4 -alkoxy,the radicals B.sup.1 independently or one another are hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical andB.sup.2 is hydrogen or unsubstituted or substituted alkyl, orB.sup.1 and B.sup.2 together with the nitrogen are a saturated 5-membered to 7-membered ring.Type: GrantFiled: June 21, 1979Date of Patent: January 3, 1984Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Hermann Lo/ ffler, Gunther Lamm
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Patent number: 4419290Abstract: A dye which in free acid form corresponds to the formula: ##STR1## wherein n is 1 or 2,Hal is chlorine or bromine,R.sup.1 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy or ethoxy,R.sup.2 is hydrogen, chlorine, bromine, methyl or methoxy,R.sup.1 and R.sup.2 are a fused unsubstituted benzene ring or a fused benzene ring substituted by hydroxysulfonyl,K is ##STR2## B is hydrogen, C.sub.1 to C.sub.4 alkyl or .beta.-hydroxy-.gamma.-chloropropyl,B.sup.1 is hydrogen, C.sub.1 to C.sub.4 alkyl, C.sub.2 or C.sub.3 hydroxyalkyl, allyl,C.sub.2 or C.sub.3 alkyl substituted by C.sub.1 to C.sub.4 alkoxy or C.sub.1 to C.sub.4 alkanoyloxy, .beta.-chlorethyl, .beta.-cyanoethyl, or .beta.-hydroxy-.gamma.-chloropropyl,B.sup.2 is the same as B.sup.1 or is cyclohexyl, benzyl, sulfobenzyl, phenylethyl, sulfophenylethyl, phenyl or sulfophenyl,B.sup.3 is hydrogen, chloro, methyl or C.sub.1 to C.sub.4 alkanoylamino,B.sup.5 is hydrogen, allyl, methyl, .beta.-cyanoethyl, .beta.-carbamoylethyl or .gamma.-carboxyethyl,B.sup.Type: GrantFiled: June 16, 1980Date of Patent: December 6, 1983Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Hermann Loeffler
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Patent number: 4344880Abstract: Disazo dyes of the general formula I ##STR1## where R is an araliphatic or aromatic radical, X.sup.1 is ##STR2## X.sup.2 is hydrogen, phenyl or an aliphatic or araliphatic radical, R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, the rings A, B and C may be substituted and the rings B and C may carry a fused benzo ring, and the group ##STR3## may also be a heterocyclic radical of the formula ##STR4## The novel dyes are very suitable for dyeing polyesters and cellulose.Type: GrantFiled: November 3, 1980Date of Patent: August 17, 1982Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Werner Juenemann
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Patent number: 4315756Abstract: Monoazo and disazo dyes having an unsubstituted or substituted aniline or p-aminoazobenzene as diazo component and an N-substituted .beta.-naphthylamine of six to eighteen carbon atoms in the N-substituent as coupling component. Preferred diazo components are phenyl, tolyl, phenylazophenyl and tolylazotolyl, and preferred coupling components are provided by .beta.-naphthylamine which is N-monosubstituted by n-hexyl, n-octyl, .beta.-ethylhexyl, 3,5,5-trimethylhexyl, tridecyl, .beta.-ethylhexoxypropyl, cyclohexyl, benzyl or phenylethyl. The dyes are eminently suitable for the coloring of for example mineral oils, gasoline, fats and waxes because of their excellent solubilities.Type: GrantFiled: December 5, 1974Date of Patent: February 16, 1982Assignee: BASF AktiengesellschaftInventors: Georg Zeidler, Johannes Dehnert, Guenter Hansen, Guenther Riedel
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Patent number: 4285693Abstract: A process for dyeing surface coatings, organic solvents and petroleum products, wherein the dye used is a compound of the general formula I ##STR1## where R is C.sub.1 -C.sub.17 -alkyl, which may or may not be interrupted by oxygen and may or may not be substituted by hydroxyl or phenoxy, or is allyl,R.sup.1 is hydrogen or C.sub.1 -C.sub.8 -alkyl,R.sup.2 is C.sub.1 -C.sub.12 -alkyl which may or may not be interrupted by oxygen and may or may not be substituted by hydroxyl or phenoxy, or is C.sub.7 -C.sub.11 -aralkyl,X is hydrogen, chlorine, bromine, methyl or methoxy,Y is hydrogen, methyl or chlorine andR.sup.1 and R.sup.Type: GrantFiled: April 8, 1980Date of Patent: August 25, 1981Assignee: BASF AktiengesellschaftInventors: Guenther Lamm, Johannes Dehnert
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Patent number: 4231746Abstract: A process for dyeing cellulose-containing textile material, wherein a dye of the general formula I ##STR1## where R is an aliphatic, cycloaliphatic, araliphatic or aromatic radical and n is 0 or 1, and where the rings A, B and C may be substituted and may carry a fused ring, is used.On cotton and especially on cotton/polyester union fabrics, the process according to the invention gives very fast, especially very lightfast, dyeings.Type: GrantFiled: August 22, 1979Date of Patent: November 4, 1980Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Werner Juenemann
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Patent number: 4210583Abstract: An azo dye of the general formula ##STR1## where A is cyano or carbamoyl,R is hydrogen, alkyl or phenyl,R.sup.1 is hydrogen, bromine, chlorine or nitro,R.sup.2 is hydrogen, chlorine, bromine, nitro, methyl, trifluoromethyl, sulfamoyl, N-monoalkyl- or N,N-dialkylsulfamoyl (where alkyl is of 1 to 4 carbon atoms), or a sulfonic acid phenyl ester, methylphenyl ester, chlorophenyl ester or methoxyphenyl ester group,R.sup.3 is hydrogen or alkyl of 1 to 8 carbon atoms which may be interrupted by oxygen and may be substituted by hydroxyl, pyrrolidonyl, phthalimidyl, alkoxy of 1 to 8 carbon atoms, allyloxy, benzyloxy, phenylethoxy, phenoxy, methylphenoxy, chlorophenoxy, methoxyphenoxy, or optionally substituted arylsulfonyl, or is benzyl, phenylethyl or cyclohexyl, or is phenyl which is unsubstituted or substituted by chlorine, bromine, nitro, methyl, ethyl, methoxy, ethoxy, phenoxy or dialkylamino (where alkyl is of 1 to 4 carbon atoms), or is naphthyl, pyridyl, thienyl or furyl,the substituents B.sup.Type: GrantFiled: July 28, 1978Date of Patent: July 1, 1980Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Walter Kurtz, Gunther Lamm
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Patent number: 4203894Abstract: Compounds which in the form of the free acids have the formula I ##STR1## where K is the radical of a coupling component, n is 1, 2 or 3, R.sup.1 is hydrogen, chlorine, bromine or hydroxysulfonyl, R.sup.2 is hydrogen, chlorine, bromine, nitro, methyl or trifluoromethyl and R.sup.3 is hydrogen, alkyl of 1 to 8 carbon atoms (which may or may not be interrupted by oxygen and may be unsubstituted or substituted by hydroxyl, alkoxy of 1 to 8 carbon atoms, phenyl or phenoxy), benzyl, phenylethyl, cyclohexyl, phenyl (which may be unsubstituted or substituted by chlorine, bromine, nitro, methyl, ethyl, methoxy, ethoxy, phenoxy, dialkylamino, where alkyl is of 1 to 4 carbon atoms, or hydroxysulfonyl), naphthyl, pyridyl, thienyl or furyl. The compounds of the formula I may be used for dyeing nitrogen-containing fibers; the dyeings obtained are very fast and have brilliant hues.Type: GrantFiled: February 21, 1978Date of Patent: May 20, 1980Assignee: BASF AktiengesellschaftInventors: Walter Kurtz, Johannes Dehnert
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Patent number: 4167394Abstract: Uniformly dyed water-swellable cellulosic fibers obtained by dyeing cellulosic fibers, in the swollen state, with a dye of the formula ##STR1## where X is hydrogen, chlorine, bromine, cyano, nitro, alkylsulfonyl of 1 to 4 carbon atoms, phenylsulfonyl, methoxy or ethoxy, Y is hydrogen, chlorine, bromine, cyano or nitro, Z is a radical of the formula ##STR2## Q is oxygen or sulfur, R.sup.1 is alkyl of 1 to 4 carbon atoms, methoxymethyl, phenoxymethyl or phenyl which is unsubstituted or substituted by chlorine, bromine, nitro, methyl, methoxy or ethoxy, R.sup.2 is hydrogen, methyl, ethyl, phenyl or phenyl substituted by chlorine, bromine or methyl, R.sup.3 is hydrogen, methyl or, if R.sup.2 is methyl, is C.sub.1 to C.sub.4 alkoxycarbonyl, R.sup.2 and R.sup.3 together with the linking carbon atoms are phenylene or phenylene substituted by chlorine, methyl, methoxy or ethoxy and K is a radical of a coupling component selected from the pyrazolone, pyrazole, indole, quinolone or homophthalimide series.Type: GrantFiled: January 9, 1978Date of Patent: September 11, 1979Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Guenter Hansen, Hermann Kaack, Wolf-Dieter Kermer, Walter Kurtz, Ernst Schaffner
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Patent number: 4157893Abstract: Uniformly dyed water-swellable cellulosic fibers obtained by dyeing cellulosic fibers in the swollen state with a dye of the formula ##STR1## in which one R is R.sup.1, OR.sup.1, SR.sup.1 or ##STR2## the other R is ##STR3## R.sup.1 and R.sup.2 independently of one another are hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, ##STR4## may also be a saturated heterocyclic radical, and D is the radical of a diazo component. The dyed fibers exhibit very good fastness properties.Type: GrantFiled: April 7, 1978Date of Patent: June 12, 1979Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Guenter Dunkelmann
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Patent number: 4154577Abstract: Uniformly dyed water-swellable cellulosic fibers obtained by dyeing cellulosic fibers in the swollen state with a dye of the formula ##STR1## in which D is the radical of a diazo component and R is an aliphatic, cycloaliphatic or araliphatic radical. The fibers are eminently suitable as textile material.Type: GrantFiled: March 30, 1978Date of Patent: May 15, 1979Assignee: BASF AktiengesellschaftInventors: Peter Miederer, Johannes Dehnert
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Patent number: 4150943Abstract: Uniformly dyed water-swellable cellulosic fibers which are fast to washing, dry-cleaning, sublimation and light and have been produced by contacting water-swellable cellulose fibers sequentially or concomitantly with water, ethylene glycol or a derivative thereof and, while the fibers are still swollen, an essentially water-insoluble dye of the formula ##STR1## in which D is the radical of a diazo component;R is hydrogen, C.sub.1 to C.sub.7 alkyl, phenyl or phenyl bearing methyl as a substituent;X is cyano, carbamoyl or substituted carbamoyl;R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical;R.sup.2 is hydrogen or an aliphatic, cycloaliphatic or araliphatic radical;R.sup.3 and R.sup.4 independently of one another have the same meanings as R.sup.1 and R.sup.2 ; andR.sup.1 --n--r.sup.2 and R.sup.3 --N--R.sup.4 independently of one another are saturated heterocyclic radicals.Type: GrantFiled: October 31, 1977Date of Patent: April 24, 1979Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Gunther Lamm, Werner Juenemann, Guenter Meyer
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Patent number: 4146535Abstract: Dye formulations for dyeing and printing cellulose and cellulosic textile material which in addition to conventional components contain a dye of the general formula (I): ##STR1## in which D is the radical of a diazo component;R is hydrogen, C.sub.1 to C.sub.7 alkyl, phenyl or phenyl bearing methyl as a substituent;X is cyano, carbamoyl or substituted carbamoyl;R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical;R.sup.2 is hydrogen or an aliphatic, cycloaliphatic or araliphatic radical;R.sup.3 and R.sup.4 independently of one another have the same meanings as R.sup.1 and R.sup.2 ; andR.sup.1 --n--r.sup.2 and R.sup.3 --N--R.sup.4 independently of one another are saturated heterocyclic radicals.Type: GrantFiled: October 1, 1976Date of Patent: March 27, 1979Assignee: BASF AktiengesellschaftInventors: Johannes Dehnert, Gunther Lamm, Werner Juenemann, Guenter Meyer