Patents by Inventor Manfred Jautelat

Manfred Jautelat 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).

  • Method for production of a triazolinethione derivative
    Publication number: 20030013890
    Abstract: According to a novel process, the triazolinethione derivative of the formula 1
    Type: Application
    Filed: June 14, 2002
    Publication date: January 16, 2003
    Inventors: Achim Hupperts, Michael Ruther, Manfred Jautelat
  • Fungicide active substance combinations
    Publication number: 20020173529
    Abstract: The novel active compound combinations comprising 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]2,4-dihydro-[1,2,4]-triazole-3-thione of the formula 1
    Type: Application
    Filed: April 26, 2001
    Publication date: November 21, 2002
    Inventors: Stefan Dutzmann, Klaus Stenzel, Manfred Jautelat
  • Process for preparing hydrazodicarbonamide via ketimines
    Patent number: 6472560
    Abstract: The present invention relates to a novel process for preparing hydrazodicarbonamide (HDC) that is, after oxidation to azodicarbonamide (ADC), used industrially as a polymer auxiliary.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: October 29, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Walter Leidinger
  • Preparation of aliphatic &agr;, &ohgr;-dicarboxylic acids
    Patent number: 6437180
    Abstract: A process for preparing aliphatic C4-18 &agr;,&ohgr;-dicarboxylic acids by oxidation of C6-20 &agr;,&ohgr;-dienes with hydrogen peroxide or compounds which release hydrogen peroxide under the reaction conditions as is characterized in that the reaction is carried out in the presence of a transition metal catalyst of group VI and of a mixture containing at least one organic acid and one aprotic organic solvent. A specific temperature profile is maintained at different phases of the reaction, which increases yield and selectivity.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: August 20, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Schelhaas, Helmut Greiving, Manfred Jautelat
  • Sulfonyl oxazolones and their use for combating undesirable microorganisms
    Publication number: 20020107403
    Abstract: Novel sulphonyloxazolones of the formula 1
    Type: Application
    Filed: December 5, 2001
    Publication date: August 8, 2002
    Inventors: Lutz Assmann, Manfred Jautelat, Ulrike Wachendorff-Neumann, Klaus Stenzel
  • Process for the production of 1,5-naphthalenediamine
    Publication number: 20020103401
    Abstract: The invention relates to a process for the production of 1,5-naphthalenediamine and to the intermediates 4-(2-nitrophenyl)butyronitrile, 5-nitro-3,4-dihydro-1(2H)-naphthyl-imine, 5-nitroso-1-naphthylamine, 5-nitro-1-naphthylamine, 4-(2-aminophenyl)-butyronitrile, 5-amino-3,4-dihydro-1(2H)-naphthalene imine, 4-(2-nitrophenyl)ethyl butyrate and 4-(2-nitrophenyl)butyramide obtainable during the process.
    Type: Application
    Filed: December 18, 2001
    Publication date: August 1, 2002
    Inventors: Michael Schelhaas, Katrin Joschek, Manfred Jautelat, Joachim Zechlin, Dietmar Wastian
  • Triazolyl disulphides
    Patent number: 6420406
    Abstract: The present invention provides the composition for novel triazolyl disulphides, the acid addition salts and metal salt complexes of the triazolyl disulphides, a process for their preparation, and a method for their use as microbicides.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: July 16, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Stefan Dutzmann, Klaus Stenzel
  • Process for preparing a dinitronaphthalene isomer mixture having an increased proportion of 1,5- dinitronaphthalene
    Patent number: 6420616
    Abstract: The present invention relates to a process for preparing a dinitronaphthalene isomer mixture having an increased proportion of 1,5-dinitronaphthalene by nitrating naphthalene in the presence of at least one ionic liquid.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: July 16, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christoph Gürtler, Manfred Jautelat, Michael Schelhaas
  • Process for preparing 4-aminodiphenylamine
    Patent number: 6414192
    Abstract: The invention provides a process for preparing 4-aminodiphenylamine, an important starting product for synthesizing antioxidants and stabilizers in the rubber and polymer industry, by hydrogenating nitrosobenzene with hydrogen in the presence of a proton acid as catalyst and in the presence of a hydrogenating catalyst, optionally in the presence of an inert organic solvent and thermally decomposing the 4-ADPA ammonium salt produced in this way, wherein 4-ADPA is obtained. 4-aminodiphenylamine is produced in good yields and high purity by the process according to the present invention. Furthermore, no effluent is produced, which makes the process particularly economic and ecological.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: July 2, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Schelhaas, Carl Casser, Dietmar Bielefeldt, Pieter Ooms, Joachim Haider, Manfred Jautelat, Christian Laue, Henry Giera
  • Oxiranyl-triazoline thiones and their use as microbicides
    Patent number: 6414007
    Abstract: Novel oxiranyl-triazolinethiones of the formula in which R1, R2 and R3 are each as defined in the description, a process for preparing the novel substances and their use as microbicides in crop protection and in the protection of materials.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: July 2, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stefan Hillebrand, Manfred Jautelat, Astrid Mauler-Machnik, Klaus Stenzel, Martin Kugler, Otto Exner
  • Process for preparing4-aminodiphenylamine
    Publication number: 20020055652
    Abstract: The invention provides a process for preparing 4-aminodiphenylamine, an important starting product for synthesizing antioxidants and stabilizers in the rubber and polymer industry, by hydrogenating nitrosobenzene with hydrogen in the presence of a proton acid as catalyst and in the presence of a hydrogenating catalyst, optionally in the presence of an inert organic solvent and thermally decomposing the 4-ADPA ammonium salt produced in this way, wherein 4-ADPA is obtained.
    Type: Application
    Filed: November 6, 2001
    Publication date: May 9, 2002
    Inventors: Michael Schelhaas, Carl Casser, Dietmar Bielefeldt, Pieter OOms, Joachim Haider, Manfred Jautelat, Christian Laue, Henry Giera
  • Method for producing triazolinethione derivatives
    Patent number: 6372916
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula in which R1 and R2 are each as defined in the description by a) reacting hydrazine derivatives of the formula  with carbonyl compounds of the formula in which R3 and R4 are each as defined in the description with potassium thiocyanate, sodium thiocyanate or ammonium thiocyanate, if appropriate in the presence of a diluent and if appropriate in the presence of an acid, and b) reacting the resulting triazolidinethione derivatives of the formula  with formic acid, if appropriate in the presence of a catalyst and if appropriate in the presence of a diluent. The triazolidinethione derivatives of the formula (V) are novel.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: April 16, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Manfred Jautelat, Achim Hupperts, David Erdman
  • Triazolinethione-phosphoric acid derivatives
    Patent number: 6369044
    Abstract: Novel triazolinethione-phosphoric acid derivatives of the formula in which R1, R2, R3 and Q are each as defined in the description and their metal salt complexes, a process for preparing the novel substances and their use as microbicides in crop protection and in the protection of materials are described.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 9, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stefan Hillebrand, Bernd-Wieland Krüger, Manfred Jautelat, Klaus Stenzel, Astrid Mauler-Machnik, Stefan Dutzmann
  • Sulfonyl oxazolones and their use for combating undesirable microorganisms
    Patent number: 6359142
    Abstract: Novel sulphonyloxazolones of the formula in which R1 represents alkyl or represents optionally substituted heterocyclyl or represents a radical of the formula  in which R3 represents halogen, alkyl or phenyl, R4 represents hydrogen or alkyl and R5 represents alkyl or optionally substituted phenyl, and R2 represents alkyl, a process for preparing these substances and their use for controlling undesirable microorganisms. Novel intermediates of the formula and a process for their preparation.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: March 19, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Assmann, Manfred Jautelat, Ulrike Wachendorff-Neumann, Klaus Stenzel
  • Method for producing triazolinethione derivatives
    Patent number: 6353114
    Abstract: According to a novel process, triazolinethione derivatives of the formula in which R1 and R2 are each as defined in the description, can be prepared by a) reacting hydrazine derivatives of the formula  with formaldehyde and thiocyanate of the formula X—SCN  (III),  in which X represents sodium, potassium or ammonium,  in the presence of a diluent and if appropriate in the presence of an acid, and b) reacting the resulting triazolidinethiones of the formula  either &agr;) with oxidizing agents, if appropriate in the presence of a catalyst and in the presence of a diluent, or &bgr;) with formic acid. The triazolidinethiones of the formula (IV) are novel.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: March 5, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, David Erdman
  • Method for producing triazolinthion derivatives
    Publication number: 20020026058
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula 1
    Type: Application
    Filed: February 26, 2001
    Publication date: February 28, 2002
    Inventors: Manfred Jautelat, Achim Hupperts, Reinhard Lantzsch
  • Method for producing triazolinthion derivatives
    Patent number: 6344587
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula in which R1 and R2 are each as defined in the description by a) reacting hydrazine derivatives of the formula  or their acid addition salts with an inorganic or organic acid with thiocyanate of the formula Y-SCN  (III)  in which Y represents sodium, potassium or ammonium in the presence of a diluent and, if appropriate, in the presence of a catalyst and b) reacting the resulting thiosemicarbazide derivatives of the formula  with formic acid, if appropriate in the presence of a catalyst and if appropriate in the presence of a diluent. The thiosemicarbazide derivatives of the formula (IV) are novel.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: February 5, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Achim Hupperts, Reinhard Lantzsch
  • Oxyranyle-triazoline thiones and their use as microbicides
    Publication number: 20020013472
    Abstract: Novel oxiranyl-triazolinethiones of the formula 1
    Type: Application
    Filed: April 5, 2001
    Publication date: January 31, 2002
    Inventors: Stefan Hillebrand, Manfred Jautelat, Astrid Mauler-Machnik, Klaus Stenzel, Martin Kugler, Otto Exner
  • Process for preparing hydrazodicarbonamide via ketimines
    Publication number: 20020013495
    Abstract: The present invention relates to a novel process for preparing hydrazodicarbonamide (HDC) that is, after oxidation to azodicarbonamide (ADC), used industrially as a polymer auxiliary.
    Type: Application
    Filed: July 16, 2001
    Publication date: January 31, 2002
    Inventors: Manfred Jautelat, Walter Leidinger
  • Process for producing aliphatic tricarbonitriles
    Publication number: 20020007081
    Abstract: The present invention relates to a process for producing tricarbonitriles corresponding to formula I 1
    Type: Application
    Filed: June 28, 2001
    Publication date: January 17, 2002
    Inventors: Michael Schelhaas, Manfred Jautelat