Patents by Inventor Udo Bergmann

Udo Bergmann 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: 5554774
    Abstract: Chlorinated violanthrones or isoviolanthrones are prepared by reacting violanthrone or isoviolanthrone with chlorine in the presence of a diluent, using aliphatic carboxylic acids and/or aliphatic halo carboxylic acids as diluent for this purpose.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: September 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Gerhard Sch afer, Heinrich Kowarsch
  • Patent number: 5536842
    Abstract: A process for purifying indigo comprises extracting an aqueous leuco indigo alkali metal salt solution with an inert solvent under oxygen-excluding conditions and conventionally regenerating the indigo by oxidation.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: July 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Manfred Gang, Reinhold Kohlhaupt
  • Patent number: 5534627
    Abstract: Polycyclic vat dyes of the general formula I ##STR1## where X is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen or nitro, obtainable by reacting (9)-benzo-5-aminoanthraquinonyl(2,1-h)-8-azapyrenone-3(II) ##STR2## with a benzoyl chloride of the formula III ##STR3## in a dipolar aprotic solvent.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: July 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Harald Schlueter, Michael Schmitt
  • Patent number: 5525743
    Abstract: The preparation of anthraquinone imide compounds by condensation of anthraquinone compounds containing at least one primary amino group with halogenized aromatics or by condensation of halogenized anthraquinone compounds with primary aromatic amines, in the presence of a vat-dyeing catalyst and an acid-binding agent in an organic solvent, in which the organic solvent used is an alkyl benzoate.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: June 11, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Helmut Hoch, Heike Kilburg, Reinhold Kohlhaupt, Matthias Niedenbrueck
  • Patent number: 5424453
    Abstract: This invention relates to a process for the purification of indigo, wherein the indigo is heated in an inert organic solvent at from 150.degree. to 250.degree. C. and preferably from 180.degree. to 220.degree. C.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: June 13, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Kohlhaupt, Udo Bergmann
  • Patent number: 5386042
    Abstract: 1,4-Diaminoanthraquinone-2,3-disulfonic acid (I) is prepared by reacting 1,4-diamino-2,3-dihaloanthraquinone (II) with boric acid in an inert organic solvent and further reacting the resulting reaction product (IIa) with an aqueous sulfite solution, by a method in which the inert organic solvent used is a nonpolar solvent having a boiling point of .gtoreq.130.degree. C. and a density of .ltoreq.0.95 g/cm.sup.3, and 1,4-diaminoanthraquinone-2,3-dinitrile (III) is prepared by reacting the 1,4-diaminoanthraquinone-2,3-disulfonic (I) with a cyanide.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: January 31, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Dust, Udo Bergmann, Gerd Schwantje
  • Patent number: 5380871
    Abstract: A process for preparing halogenated indigo by reacting indigo with bromine and/or chlorine in the presence or absence of iodine as catalyst comprises using thionyl chloride as reaction medium.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: January 10, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Kohlhaupt, Udo Bergmann, Lothar Haas
  • Patent number: 5245058
    Abstract: 1-Nitroanthraquinone-2-carboxylic acids of the general formula I ##STR1## where X is hydrogen, chlorine or bromine, are prepared by oxidizing a 1-nitro-2-methylanthraquinone of the general formula II ##STR2## with nitric acid in an organic reaction medium.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: September 14, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Hagen, Jacques Dupuis, Michael Acker, Udo Bergmann
  • Patent number: 5003049
    Abstract: The compounds of the general formula (I) ##STR1## where A is a dye radical, where relevant the radicals Y independently of one another are each oxygen, sulfur, R.sup.1 --N or a direct bond, n is 1 or 2, the radicals R.sup.1 independently of one another are each hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl and Z is a bridge member, are very useful for dyeing hydroxyl-containing textile material.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: March 26, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Alfred Hackenberger, Manfred Patsch
  • Patent number: 4960874
    Abstract: Compounds of the general formula I ##STR1## where R is alkyl or unsubstituted or substituted aryl and K is a radical of the formula ##STR2## B is C.sub.1 -C.sub.4 -alkyl or substituted amino, R.sup.1 is hydrogen, methyl, methoxy or ethoxy, R.sup.2 and R.sup.3 independently of one another are each unsubstituted or substituted alkyl, R.sup.3 may furthermore be hydrogen, R.sup.4 is a radical of the formula --A--OCO--Y--R, Z is hydrogen or methyl, X is hydrogen, methyl, methoxy, chlorine or acylamino, A is C.sub.2 - or C.sub.3 -alkylene and Y is --O-- or --NH--, are very useful for dyeing cellulose esters and synthetic polyesters.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: October 2, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Johannes D. Dix, Guenter Hansen, Ernst Schefczik, Guenther Seybold
  • Patent number: 4820809
    Abstract: 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: Grant
    Filed: January 11, 1988
    Date of Patent: April 11, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Erwin Hahn, Guenter Hansen
  • Patent number: 4764600
    Abstract: An isothiazolylazo dye of the formula I ##STR1## wherein R is an alkyl group or unsubstituted aryl or substituted aryl group selected from the group consisting of ##STR2## and K is a radical of the formula ##STR3## where B is C.sub.1 -C.sub.4 alkyl or a substituted amino radical selected from the group consisting of ##STR4## R.sup.1 is hydrogen, methyl, methoxy or ethoxy, R.sup.2 and R.sup.3 independently of one another are each unsubstituted C.sub.1 -C.sub.4 alkyl or substituted alkyl groups selected from the group of C.sub.1 -C.sub.4 alkyls which are substituted by chlorine, bromine, cyano, hydroxyl, C.sub.1 -C.sub.4 -alkoxy, benzyloxy, phenoxy, phenyl, C.sub.1 -C.sub.4 -alkylcarbonyloxy which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkoxy, phenoxy or phenyl, phenycarbonyloxy which is unsubstituted or substituted by chlorine, bromine, methoxy, ethoxy, methyl or ethyl, oxycarbonyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: January 25, 1983
    Date of Patent: August 16, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Johannes P. Dix, Guenter Hansen, Ernst Schefczik, Guenther Seybold
  • Patent number: 4751288
    Abstract: The compounds of the formula I ##STR1## where R is unsubstituted or substituted phenyl or naphthyl, R.sup.1 and R.sup.2 are each unsubstituted or substituted alkyl, alkenyl or cycloalkyl, and one of the radicals may furthermore be hydrogen, R.sup.3 is hydrogen, methyl, methoxy, ethoxy or chlorine, and R.sup.4 is acylamino, are particularly useful for dyeing polyesters.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: June 14, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Erwin Hahn, Guenter Hansen, Helmut Reichelt
  • Patent number: 4668775
    Abstract: A compound of the formula: ##STR1## wherein K is a radical of a coupling component, R is a radical of a methylene-active compound, X is hydrogen or unsubstituted or substituted alkyl, aryl, or hetaryl and Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl. The present compound is useful for the dyeing of polyesters, nylons, cellulose esters and blends of polyesters and cellulose fibers.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: May 26, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Erwin Hahn, Guenter Hansen
  • Patent number: 4638055
    Abstract: Compounds which in the form of the free acid are of the general formula I ##STR1## where A is a radical of the formula ##STR2## the radicals Y independently of one another are each hydroxyl or amino, X is hydrogen, hydroxysulfonyl or a radical of the formulaD--N.dbd.N--,R is a radical of 1-aminonaphthalene-4-, -5-, -6-, -7-or -8-monosulfonic acid or of 1-aminonaphthalene-3-6,-, -3,7-, -3,8-, -4,7- or -4,8-disulfonic acid, or a Cu, Fe, Ni, Co, Mn or Cr complex thereof, and D is phenyl which is unsubstituted or substituted by methyl, methoxy,ethoxy, nitro, chlorine, bromine or sulfo, or is sulfo-substituted naphthyl. These compounds are preferably used for dyeing leather.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: January 20, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Guenter Hansen, Georg Zeidler
  • Patent number: 4619992
    Abstract: A compound of the formula: ##STR1## where R is hydrogen, C.sub.1 -C.sub.4 -alkyl, phenyl, chlorophenyl, methylphenyl, methoxyphenyl or nitrophenyl; R.sup.1 is allyl, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkyl substituted by C.sub.1 -C.sub.8 -alkoxy, phenoxy, phenyl or C.sub.1 -C.sub.8 -alkanoyloxy, cyclopentyl, cyclohexyl, methylcyclohexyl, norbornyl, phenyl or phenyl substituted by chlorine, methyl or alkoxy; R.sup.2 is C.sub.1 -C.sub.10 -alkanoyl, C.sub.1 -C.sub.10 -alkanoyl substituted by alkoxy or phenoxy, cyclohexanoyl, benzoyl, benzoyl substituted by chlorine, methyl or methoxy, C.sub.1 -C.sub.8 -alkoxycarbonyl, aminocarbonyl, phenylaminocarbonyl, CH.sub.3 NHCO, C.sub.2 H.sub.5 NHCO, C.sub.3 H.sub.7 NHCO, C.sub.4 H.sub.9 NHCO, (CH.sub.3).sub.2 NCO, CH.sub.3 SO.sub.2, C.sub.6 H.sub.5 SO.sub.2 or p--CH.sub.3 --C.sub.6 H.sub.4 --SO.sub.2 ; or R.sup.1 and R.sup.2, together with the nitrogen atom, form a ring system, and K is a radical of a coupling component.
    Type: Grant
    Filed: March 12, 1985
    Date of Patent: October 28, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Johannes P. Dix, Guenter Hansen, Ernst Schefczik
  • Patent number: 4563520
    Abstract: Compounds containing sulfonic acid groups and of the general formula I ##STR1## where D.sup.1 is a radical of a diazo component, X.sup.1 and X.sup.2 independently of one another are each hydroxyl or unsubstituted or substituted amino, Y is hydrogen, chlorine, methyl, hydroxysulfonyl or a radical of the formulaD.sup.3 --N.dbd.N--and D.sup.2 is a radical of the formula ##STR2## D.sup.3 is a radical of a diazo component from the aniline or aminonaphthalene series, K is a radical of a coupling component from the benzene or naphthalene series, and the rings in the coupling component D.sup.2 may furthermore be substituted by chlorine, methyl, methoxy, hydroxysulfonyl, aminosulfonyl, hydroxyl or acylamino, and metal complexes of such compounds, give very fast, brown dyeings, particularly on leather.
    Type: Grant
    Filed: October 21, 1982
    Date of Patent: January 7, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Guenter Hansen, Dietrich Lach, Georg Zeidler
  • Patent number: 4547566
    Abstract: Compounds which in the form of the free acid are of the general formula I ##STR1## where A is a radical of the formula ##STR2## the radicals Y independently of one another are each hydroxyl or amino, X is hydrogen, hydroxysulfonyl or a radical of the formulaD--N.dbd.N--,R is a radical of 1-aminonaphthalene-4-, -5-, -6-, -7- or -8-monosulfonic acid or of 1-aminonaphthalene-3,6-, -3,7-, -3,8-, -4,7-, or -4,8-disulfonic acid, or a Cu, Fe, Ni, Co, Mn or Cr complex thereof, and D is phenyl which is unsubstituted or substituted by methyl, methoxy, ethoxy, nitro, chlorine, bromine or sulfo, or is sulfo-substituted naphthyl. These compounds are preferably used for dyeing leather.
    Type: Grant
    Filed: March 23, 1983
    Date of Patent: October 15, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Guenter Hansen, Georg Zeidler
  • Patent number: 4537597
    Abstract: Mixtures of dyes of the formula I ##STR1## where X is chlorine or bromine, Z is hydrogen, methyl, ethyl, C.sub.1 -C.sub.4 -alkoxy or acetylamino, R is C.sub.1 -C.sub.4 -alkyl, R.sup.1 and R.sup.2 independently of one another are each allyl or methallyl or are each C.sub.1 -C.sub.6 -alkyl which is unsubstituted or substituted by hydroxyl, C.sub.1 -C.sub.4 -alkoxy or alkanoyloxy, or R.sup.1 and R.sup.2 together with the nitrogen atom are morpholino or tetra-, penta- or hexamethyleneimino, and one of the radicals R.sup.1 and R.sup.2 may furthermore be hydrogen.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: August 27, 1985
    Assignee: Basf Aktiengesellschaft
    Inventors: Udo Bergmann, Helmut Degen, Guenter Hansen, Reinhold Krallmann, Hans Weber
  • Patent number: 4496480
    Abstract: Compounds of the general formula I ##STR1## where R is substituted alkyl and K is the radical of a coupling component free from unsaturated aliphatic radicals, are very useful for dyeing cellulose esters and synthetic polyesters.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: January 29, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Bergmann, Johannes P. Dix, Guenter Hansen, Ernst Schefczik