Patents by Inventor Hermann Loeffler
Hermann Loeffler 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: 5623060Abstract: Dye mixtures comprising at least 4 dyes of the same color having the formula ##STR1## where D is the radical of a diazo component of the aminoanthraquinone, aniline, aminothiophene, aminothiazole, aminoisothiazole, aminothiadiazole or aminobenzisothiazole series,one of X1 and X2 is substituted or unsubstituted phenylamino while the other is a radical of the formula NH--L--O--R, where L is substited or unsubstituted C.sub.2 -C.sub.8 -alkylene, andR is hydrogen, C.sub.1 -C.sub.4 or C.sub.1 -C.sub.3 -alkanoyl,are useful for dyeing or printing textile materials.Type: GrantFiled: February 20, 1996Date of Patent: April 22, 1997Assignee: BASF AktiengesellschaftInventors: Gunther Lamm, Hermann Loeffler, Helmut Reichelt
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Patent number: 5536840Abstract: A process for preparing diaminopyridines of the formula ##STR1## where one of the two radicals X.sup.1 and X.sup.2 is hydrogen, C.sub.1 -C.sub.4 -alkyl, halogen or nitro and the other is cyano,R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl,R.sup.2 and R.sup.3 are each hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,R.sup.4 is hydrogen or C.sub.1 -C.sub.4 -alkyl, andR.sup.5 is optionally substituted C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.4 -alkenyl or C.sub.5 -C.sub.7 -cycloalkyl,by reacting dichloropyridines of the formula ##STR2## in a first step with an amine of the formula R.sup.5 -NH.sub.2 at from 10.degree. to 80.degree. C. in the presence of a base and of an inert organic diluent and/or water, then removing the diluent and thereafter, with or without prior intermediate isolation of the reaction product, comprises carrying out the second step in a melt at from 90.degree. to 165.degree. C. and at a pH from 3.5 to 6.5 using from 1.Type: GrantFiled: June 17, 1994Date of Patent: July 16, 1996Assignee: BASF AktiengesellschaftInventors: Gunther Lamm, Hermann Loeffler, Helmut Reichelt
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Patent number: 5484460Abstract: Dye mixtures comprising at least six isochromatic dyes of the formula ##STR1## where D is the radical of a diazo component of the aniline, aminothiophene, aminothiazole, aminoisothiazole or aminobenzisothiazole series andone of the radicals X.sup.1 and X.sup.2 is amino and the other is a radical of the formula ##STR2## where L is unsubstituted or substituted C.sub.2 -C.sub.8 -alkyleneR.sup.1 is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl andR.sup.2 is hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenyl, or C.sub.1 -C.sub.8 -alkanoyl,and the use thereof for dyeing or printing textile materials, and dye mixtures comprising thienylazopyridine dyes and anthraquinone dyes and the use thereof for dyeing or printing textile materials.Type: GrantFiled: November 9, 1994Date of Patent: January 16, 1996Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Gunther Lamm, Volker Bach, Arno Lange, Helmut Reichelt, Herbert Rothmaier
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Patent number: 5403363Abstract: Dye mixtures comprising at least six isochromatic dyes of the formula ##STR1## where D is the radical of a diazo component of the aniline, aminothiophene, aminothiazole, aminoisothiazole or aminobenzisothiazole series andone of the radicals X.sup.1 and X.sup.2 is amino and the other is a radical of the formula ##STR2## where L is unsubstituted or substituted C.sub.2 -C.sub.8 -alkyleneR.sup.1 is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl andR.sup.2 is hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenyl, or C.sub.1 -C.sub.8 -alkanoyl,and the use thereof for dyeing or printing textile materials, and dye mixtures comprising thienylazopyridine dyes and anthraquinone dyes and the use thereof for dyeing or printing textile materials.Type: GrantFiled: November 30, 1993Date of Patent: April 4, 1995Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Gunther Lamm, Volker Bach, Arno Lange, Helmut Reichelt, Herbert Rothmaier
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Patent number: 5352774Abstract: The compounds of the general formula I ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are very useful for dyeing synthetic fibers or plastics.Type: GrantFiled: September 23, 1993Date of Patent: October 4, 1994Assignee: Sandoz AGInventors: Guenter Hansen, Ernst Schefczik, Karl-Heinz Etzbach, Helmut Reichelt, Hermann Loeffler
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Patent number: 5330543Abstract: Azo dyes having the formula ##STR1## wherein the substituents are as defined in the specification and are useful for dyeing or printing textile materials.Type: GrantFiled: October 27, 1993Date of Patent: July 19, 1994Assignee: BASF AktiengesellschaftInventors: Guenter Hansen, Gunther Lamm, Hermann Loeffler, Helmut Reichelt, Helmut Degen, Arno Lange, Clemens Grund
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Patent number: 5283326Abstract: The compounds of the general formula ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are very useful for dyeing synthetic fibers or plastics.Type: GrantFiled: May 13, 1992Date of Patent: February 1, 1994Assignee: Sandoz AGInventors: Guenter Hansen, Ernst Schefczik, Karl-Heinz Etzbach, Helmut Reichelt, Hermann Loeffler
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Patent number: 5245020Abstract: Reactive dyes of the formula ##STR1## where l is 0 or 1,n is 0 or 1,E is nitrogen or C--ClA is the radical of an azo dye attached to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimido 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 of 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--Cl--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 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: GrantFiled: March 18, 1992Date of Patent: September 14, 1993Assignee: BASF AktiengesellschaftInventors: Joerg L. Jessen, Klaus Pandl, Hermann Loeffler, Bernd Siegel, Manfred Patsch
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Patent number: 5223607Abstract: Reactive azo dyes useful for dyeing and printing hydroxyl- or nitrogen-containing substrates have the formula ##STR1##wherem is 0, 1 or 2,n is 1 or 2,R.sup.1 and R.sup.2 are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl,T is carboxyl or hydroxysulfonyl,Hal is fluorine or chlorine,Y is fluorine, chlorine or the radical NR.sup.1 R.sup.2, OR.sup.1 or SR.sup.1, where R.sup.1 and R.sup.2 are each as defined above, andthe ring A may be benzofused and/or substituted, with the proviso thata) the sum total of acidic groups is at least 8 and thatb) when the structural element of the formula ##STR2##is present and Y is fluorine or chlorine and T is hydroxysulfonyl, the sum total of hydroxysulfonyl radicals is at least 10.Type: GrantFiled: June 18, 1991Date of Patent: June 29, 1993Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Manfred Patsch, Reinhold Krallmann
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Patent number: 5216137Abstract: 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: GrantFiled: July 5, 1991Date of Patent: June 1, 1993Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Manfred Patsch, Reinhold Krallmann
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Patent number: 5200511Abstract: Reactive dyes of the formula ##STR1## where m is 0 or 1,A.sup.1 and A.sup.2 are different and each is a fiber-reactive radical or else, in the case of A.sup.2, hydrogen,D.sup.1 and D.sup.2 are substituted or unsubstituted phenylene, substituted or unsubstituted phenylenemethyl, substituted or unsubstituted naphthylene or substituted or unsubstituted naphthylenemethyl,K.sup.1 and K.sup.2 are each the radical of a coupling component of the aminonaphthalenesulfonic acid series andL is a bridge member,are useful for dyeing and printing hydroxyl- or nitrogen-containing substrates.Type: GrantFiled: March 30, 1992Date of Patent: April 6, 1993Assignee: Basf AktiengesellschaftInventors: Hermann Loeffler, Manfred Patsch
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Patent number: 5175262Abstract: Reactive dyes of the formula ##STR1## where R.sup.1 is hydrogen, methyl or ethyl,X is hydrogen or hydroxysulfonyl,Hal is fluorine or chlorine,D is phenylene, carboxyl- or hydroxysulfonyl-monosubstituted or -disubstituted phenylene or hydroxysulfonyl-monosubstituted or -disubstituted naphthylene,A is a fiber-reactive radical, or A--D combined is a benzo-fused fiber-reactive radical, andZ is a bridge member, are useful for dyeing or printing hydroxyl- or nitrogen-containing substrates.Type: GrantFiled: October 25, 1991Date of Patent: December 29, 1992Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Klaus Pandl, Manfred Patsch, Siegel Bernd
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Patent number: 5149789Abstract: 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: GrantFiled: March 8, 1990Date of Patent: September 22, 1992Assignee: BASF AktiengesellschaftInventors: Joerg L. Jessen, Klaus Pandl, Hermann Loeffler, Bernd Siegel, Manfred Patsch
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Patent number: 5066791Abstract: Pyridoneazo dyes of the formula ##STR1## where L is C.sub.2 - or C.sub.3 -alkylene, R is C.sub.1 -C.sub.3 -alkyl and n is 1, 2 or 3, are useful for dyeing polyester fabrics.Type: GrantFiled: February 14, 1990Date of Patent: November 19, 1991Assignee: BASF AktiengesellschaftInventors: Guenter Hansen, Gunther Lamm, Hermann Loeffler
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Patent number: 4988802Abstract: Reactive dyes which possess three reactive groups and conform to the formula ##STR1## where R.sup.1 is hydrogen, methyl or ethyl,X is hydrogen or hydroxysulfonyl,Hal is fluorine or chlorine,D is phenylene, carboxyl- hydroxysulfonyl-monosubstituted or -disubstituted phenylene or hydroxysulfonylmonosubstituted or -disubstituted naphthylene, andA is a reactive group which reacts only substitutively with the hydroxyl groups of the cellulose, or A--D together are a benzo-fused reactive group which reacts only substitutively with the hydroxyl groups of the cellulose, are used for dyeing or printing hydroxyl- or nitrogen-containing substrates.Type: GrantFiled: February 23, 1990Date of Patent: January 29, 1991Assignee: BASF AktiengesellschaftInventors: Hermann Loeffler, Manfred Patsch
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Patent number: 4965345Abstract: Solvent dyes of the formula ##STR1## where ##STR2## R.sup.1 and R.sup.2 are each, independently of the other, hydrogen, methyl, ethyl, methoxy or ethoxy,n is 0 or 1 andk, if n is 0, is the radical of a coupling component of the pyrazolone series or, if n is 1, is the radical of a coupling component of the pyrazolone, 2-naphthol, hydroxyquinoline, aniline, naphthylamine, pyridone or 2,6-diaminopyridine series,R.sup.3 and R.sup.4 each independently of the other being C.sub.1 -C.sub.22 -alkyl which may be substituted or interrupted by oxygen, imino or C.sub.1 -C.sub.4 -alkylimino, subject to the proviso that COR has more than 8 carbon atoms, are very highly suitable for coloring organic substrates.Type: GrantFiled: October 2, 1987Date of Patent: October 23, 1990Assignee: BASF AktiengesellschaftInventor: Hermann Loeffler
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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: 4952681Abstract: Compounds of the formula I ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are disclosed. They are useful for dyeing synthetic fibers or plastics.Type: GrantFiled: July 27, 1988Date of Patent: August 28, 1990Assignee: Sandoz AGInventors: Guenter Hansen, Ernst Schefczik, Karl-Heinz Etzbach, Helmut Reichelt, Hermann Loeffler
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Patent number: 4939118Abstract: Azo dyes are transferred from a substrate to a plastic-coated paper by diffusion with the aid of a thermal printing head, these azo dyes having the formula ##STR1## where D is the radical of a diazo component andR.sup.1, R.sup.2 and R.sup.3 are each independently of the others hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted phenyl or substituted or unsubstituted cyclohexyl andR.sup.4 is alkyl.Type: GrantFiled: June 12, 1989Date of Patent: July 3, 1990Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Etzbach, Gunther Lamm, Hermann Loeffler, Helmut Reichelt, Ruediger Sens
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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