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).

  • Patent number: 4965346
    Abstract: 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: Grant
    Filed: March 16, 1989
    Date of Patent: October 23, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm, Hermann Loeffler
  • Patent number: 4855412
    Abstract: 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: Grant
    Filed: April 24, 1987
    Date of Patent: August 8, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm, Hermann Loeffler
  • Patent number: 4855413
    Abstract: 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: Grant
    Filed: April 28, 1988
    Date of Patent: August 8, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm, Hermann Loeffler
  • Patent number: 4724259
    Abstract: Compounds of the general formula I ##STR1## where R.sup.1 and R.sup.2 independently of one another are each C.sub.6 -C.sub.24 -alkyl or are each benzyl which is unsubstituted or substituted by alkyl or by cycloalkyl, and one of the radicals may furthermore be hydrogen, and the rings A, B, C and D can be further substituted by chlorine, methyl or methoxy, with the exception of the compound of the formula ##STR2## are useful as dyes in electrooptical liquid crystal displays or for the production of polarization films.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: February 9, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Etzbach, Werner Juenemann, Johannes Dehnert
  • Patent number: 4650860
    Abstract: 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: Grant
    Filed: June 26, 1985
    Date of Patent: March 17, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm
  • Patent number: 4599402
    Abstract: 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: Grant
    Filed: October 12, 1984
    Date of Patent: July 8, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Werner Junemann
  • Patent number: 4430267
    Abstract: 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: Grant
    Filed: February 23, 1981
    Date of Patent: February 7, 1984
    Assignee: BASF Aktiengesellschaft
    Inventor: Johannes Dehnert
  • Patent number: 4424154
    Abstract: 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: Grant
    Filed: June 21, 1979
    Date of Patent: January 3, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Hermann Lo/ ffler, Gunther Lamm
  • Patent number: 4419290
    Abstract: 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: Grant
    Filed: June 16, 1980
    Date of Patent: December 6, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Hermann Loeffler
  • Patent number: 4344880
    Abstract: 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: Grant
    Filed: November 3, 1980
    Date of Patent: August 17, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Werner Juenemann
  • Patent number: 4315756
    Abstract: 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: Grant
    Filed: December 5, 1974
    Date of Patent: February 16, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Zeidler, Johannes Dehnert, Guenter Hansen, Guenther Riedel
  • Patent number: 4285693
    Abstract: 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: Grant
    Filed: April 8, 1980
    Date of Patent: August 25, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenther Lamm, Johannes Dehnert
  • Patent number: 4231746
    Abstract: 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: Grant
    Filed: August 22, 1979
    Date of Patent: November 4, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Werner Juenemann
  • Patent number: 4210583
    Abstract: 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: Grant
    Filed: July 28, 1978
    Date of Patent: July 1, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Walter Kurtz, Gunther Lamm
  • Patent number: 4203894
    Abstract: 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: Grant
    Filed: February 21, 1978
    Date of Patent: May 20, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Kurtz, Johannes Dehnert
  • Patent number: 4167394
    Abstract: 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: Grant
    Filed: January 9, 1978
    Date of Patent: September 11, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Guenter Hansen, Hermann Kaack, Wolf-Dieter Kermer, Walter Kurtz, Ernst Schaffner
  • Patent number: 4157893
    Abstract: 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: Grant
    Filed: April 7, 1978
    Date of Patent: June 12, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Guenter Dunkelmann
  • Patent number: 4154577
    Abstract: 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: Grant
    Filed: March 30, 1978
    Date of Patent: May 15, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Miederer, Johannes Dehnert
  • Patent number: 4150943
    Abstract: 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: Grant
    Filed: October 31, 1977
    Date of Patent: April 24, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm, Werner Juenemann, Guenter Meyer
  • Patent number: 4146535
    Abstract: 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: Grant
    Filed: October 1, 1976
    Date of Patent: March 27, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm, Werner Juenemann, Guenter Meyer