Patents by Inventor Matthias Irgang

Matthias Irgang 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: 7157406
    Abstract: Catalysts or carriers which consist essentially of monoclinic zirconium dioxide are prepared by pecipitation of zirconium salts with ammonia, by adding a zirconyl nitrate or zirconyl chloride solution to an aqueous ammonia solution at a decreasing pH from 14 to 6 and drying, calcining and pelletizing the product.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: January 2, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Irgang, Michael Hesse, Werner Schnurr
  • Publication number: 20050085381
    Abstract: Catalysts or carriers which consist essentially of monoclinic zirconium dioxide are prepared by pecipitation of zirconium salts with ammonia, by adding a zirconyl nitrate or zirconyl chloride solution to an aqueous ammonia solution at a decreasing pH from 14 to 6 and drying, calcining and pelletizing the product.
    Type: Application
    Filed: November 9, 2004
    Publication date: April 21, 2005
    Inventors: Matthias Irgang, Michael Hesse, Werner Schnurr
  • Patent number: 6201160
    Abstract: Alcohols are prepared by the catalytic hydrogenation of the corresponding carbonyl compounds at elevated temperatures and at superatmospheric pressure in the liquid phase by a process in which the catalyst used contains copper on an SiO2-containing carrier in the presence or absence of one or more of the elements magnesium, barium, zinc and chromium.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: March 13, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Bruderm├╝ller, Matthias Irgang, Martin Schmidt-Radde, Franz Merger, Tom Witzel, Detlef Kratz, Eckehard Danz, Arnold Wittwer, Michael Hesse, Manfred Sauerwald, Cristina Freire Erdbr├╝gger
  • Patent number: 6124234
    Abstract: Catalysts prepared by combining M--Al.sub.2 O.sub.4 where M is an element of Group Ib, VIIb or VIII of the Periodic Table of the Elements with tin, lead, an element of group IIa or IIb of the Periodic Table of the Elements as oxide or salt or in elemental form and calcining at 300-1300.degree. C. under 0.1-200 bar and the process for preparing them.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: September 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Fetzer, Wolfgang Buechele, Matthias Irgang, Bernhard Otto, Hermann Wistuba, Gert Buerger
  • Patent number: 5783711
    Abstract: Preparation of heterocyclic aldehydes I ##STR1## (A, B=optionally substituted methylene groups; m, n=1 to 5; m+n>2), by hydrogenation of carboxylic acids IIa ##STR2## or one of their esters IIb derived from a C.sub.1 -C.sub.10 alcohol, at a temperature of from 200.degree. to 450.degree. C. over a catalyst.The end products are suitable as intermediates for herbicides of the cyclohexanone class.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: July 21, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Schnurr, Rolf Fischer, Joachim Wulff-Doring, Matthias Irgang, Horst Neuhauser
  • Patent number: 5763676
    Abstract: Aromatic aldehydes are prepared by catalytically reacting aromatic carboxylic acids or their esters with hydrogen in the gas phase at from 200.degree. to 450.degree. C. and from 0.1 to 20 bar in the presence of a zirconium dioxide/lanthanide catalyst having a high BET surface area of from 20 to 150 m.sup.2 /g, preferably from 40 to 150 m.sup.2 /g. The proportions by weight of the catalytically active mass range from 80 to 99.9% by weight of zirconium dioxide and from 0.01 to 20 %by weight of one or more lanthanide elements. This catalyst provides very high conversion rates of 94 to 100% together with a correspondingly high selectivity for the aldehyde product.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: June 9, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fischer, Matthias Irgang, Werner Schnurr, Joachim Wulff-Doring
  • Patent number: 5736076
    Abstract: Moldings which comprise from 30 to 100% by weight of graphite, prepared from graphite powders which comprise from 5 to 100% by weight of rhombohedral crystalline graphite and, if required, contain additives and/or binders, and a process for their preparation and their use as catalyst carriers, heat transfer material, column packing or diluent in catalyst beds.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: April 7, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruprecht Meissner, Matthias Irgang, Knut Eger, Peter Weidlich, Heinz Dreyer
  • Patent number: 5736484
    Abstract: A catalyst suitable for hydrogenating organic compounds, essentially containing from 65 to 80% of nickel, calculated as nickel oxide, from 10 to 25% of silicon, calculated as silicon dioxide, from 2 to 10% of zirconium, calculated as zirconium oxide, and from 0 to 10% of aluminum, calculated as aluminum oxide, with the proviso that the sum of the content of silicon dioxide and aluminum oxide is at least 15% (percentages in % by weight, based on the total weight of the catalyst), obtainable by addition of an acidic aqueous solution of nickel, zirconium and, if desired, aluminum salts to a basic aqueous solution or suspension of silicon compounds and if desired aluminum compounds, the pH of the mixture thus obtained being decreased to at least 6.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: April 7, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Polanek, Harald Schwahn, Matthias Irgang, Cristina Freire Erdbrugger
  • Patent number: 5714644
    Abstract: A process is disclosed for the selective hydrogenation of butynediol to 2-butene-1,4-diol using a palladium catalyst to which either copper and zinc, or silver and zinc, or copper, silver and zinc are added as doping agents. In the preferred embodiment, it has been possible, by optimizing the composition of the catalyst, to improve the activity and selectivity of the catalysts in question while also eliminating the need to handle toxic substances during the catalyst manufacturing process.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: February 3, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Irgang, Volkmar Menger, Ernest Miesen, Peter Stops, Fritz Graf
  • Patent number: 5663438
    Abstract: A process for the preparation of a phenyl amine which may be substituted by alkyl or cycloalkyl in which the corresponding cyolohexylamine is reduced at temperatures of 150.degree. to 300.degree. C. and pressures of 0.01 to 50 bar in the presence of a heterogeneous dehydrogenation catalyst consisting essentially of palladium or a palladium/platinum mixture supported on carrier consisting of the oxides of rare earth metals and and metals of Group IVb of the Periodic Table of Elements, with the proviso that the palladium/platinum mixture may also be supported on an alumina carrier. The cyclohexylamine reactant can be advantageously prepared by reacting the corresponding phenol with ammonia and hydrogen at 100.degree. to 250.degree. C. in the presence of the same heterogeneous catalyst as a preliminary step to provide a two stage process using the same catalyst in both stages.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: September 2, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Kohler, Frank-Friedrich Pape, Matthias Irgang, Joachim Wulff-Doring, Michael Hesse, Peter Polanek
  • Patent number: 5536691
    Abstract: Cobalt catalysts whose catalytically active material comprises from 55 to 98 wt % of cobalt, from 0.2 to 15 wt % of phosphorus, from 0.2 to 15 wt % of manganese, and from 0.2 to 15 wt % of alkali metal, calculated as oxide, in which the catalyst material is calcined in a first step at final temperatures of from 550.degree. to 750.degree. C. and in a second step at final temperatures of from 800.degree. to 1000.degree. C., and a process for the hydrogenation of organic nitriles and/or imines, in which the novel cobalt catalyst is used.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Boris Breitscheidel, Peter Polanek, Matthias Irgang, Hermann Petersen, Gerd Linden, Guido Voit, Tom Witzel
  • Patent number: 5254738
    Abstract: A process for the preparation of a 1,4-alkylenediamine of the general formula I ##STR1## in which the substituents R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1 -C.sub.10 -alkyl, phenyl or benzyl, by reacting a succinic dinitrile of the general formula II ##STR2## in which R.sup.1 and R.sup.2 have the meanings stated, with hydrogen at a temperature of from 30.degree. to 250.degree. C. and a pressure of from 50 to 350 bar in contact with a hydrogenation catalyst, wherein the hydrogenation catalyst used contains cobalt oxide and one or more oxides of the elements iron, nickel, manganese, chromium, molybdenum, tungsten, and phosphorus and one or more oxides of elements in the alkali metal group, alkaline earth metal group, and rare earth group of the Periodic Table, and of scandium, and/or of yttrium.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: October 19, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Koehler, Hardo Siegel, Matthias Irgang
  • Patent number: 5194675
    Abstract: Methyl formate is prepared by converting methanol over a copper-containing catalyst at elevated temperatures and in the gas phase by a process in which the catalyst used contains from 30 to 80% by weight of copper, calculated as CuO, as well as from 20 to 70% by weight of a magnesium silicate, calculated as MgO plus SiO.sub.2, which has a molar ratio of MgO/SiO.sub.2 of from 0.3 to 1.5, and may additionally be doped with the metals zinc, chromium and/or barium, each in an amount of not more than 1.5% by weight, calculated as ZnO, Cr.sub.2 O.sub.3 and BaO.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: March 16, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Joerg, Franz-Josef Mueller, Matthias Irgang, Laszlo Marosi, Gerhard Borchert
  • Patent number: 5166433
    Abstract: Catalysts whose active material contains, in addition to from 20 to 85% by weight, calculated as ZrO.sub.2, of oxygen-containing zirconium compounds, from 1 to 30% by weight, calculated as CuO, of oxygen-containing compounds of copper and from 1 to 40% by weight each, calculated as CoO or NiO, respectively, of oxygen-containing compounds of cobalt and of nickel are used for the amination of alcohols under hydrogenating conditions.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: November 24, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Irgang, Juergen Schossig, Wolfgang Schroeder, Siegfried Winderl
  • Patent number: 5132427
    Abstract: A process for the preparation of amines of the formula ##STR1## in which R.sup.1 is the radical H.sub.2 N-CH.sub.2 and R.sup.2 is hydrogen, or R.sup.1 and R.sup.2 together form a bridging group --CH.sub.2 --, by reacting 1,3,6-tricyanohexane at elevated temperature and pressure with hydrogen in contact with a catalyst containing, in addition to cobalt oxide, and oxide of an alkali metal, an oxide of an alkaline earth metal, an oxide of a rare earth or an oxide of scandium or yttrium.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: July 21, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Koehler, Hardo Siegel, Peter Jaeger, Matthias Irgang
  • Patent number: 5128307
    Abstract: Copper-containing catalysts for low temperature shift conversion at from 150.degree. to 300.degree. C. and under from 10 to 40 bar, which additionally contain aluminum and zinc, if necessary in the form of the compounds or oxides and are prepared by coprecipitation, the copper-containing catalysts containing potassium and having a BET surface area adapted to the potassium content, and the potassium content being brought to 0.1-3.0% by weight at a BET surface of from 30 to 160 m.sup.2 /g, are used for the preparation of hydrogen and carbon dioxide from carbon monoxide and water.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: July 7, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Wanjek, Claus Witte, Michael J. Sprague, Matthias Irgang, Wolfgang Hoelderich, Wolf D. Mross
  • Patent number: 5120880
    Abstract: Muscone of the formula I ##STR1## is prepared by a process in which an open-chain 2,15-diketone of the general formula IICH.sub.3 --CO--X--CO--CH.sub.3 (II)whereX is one of the radicals--(--CH.sub.2 --).sub.12 -- (a)--CH.dbd.CH--(--CH.sub.2 --).sub.8 --CH.dbd.CH-- (b)--CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.6 --CH.dbd.CH--CH.sub.2 --(c)--CH.sub.2 --CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.4 --CH.dbd.CH--CH.sub.2 --CH.sub.2 -- (d)or--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.2 --CH.dbd.CH--CH.sub.2 --CH.sub.2 --CH.sub.2 -- (e)is brought into contact, at from 300.degree. to 400.degree. C. in the presence of from 5 to 15% by weight, based on the amount of catalyst, of water, in the gas phase, with a fixed-bed catalyst containing TiO.sub.2, CeO.sub.2 or ThO.sub.2 as the catalytically active compound and the unsaturated cyclic ketone formed by intramolecular aldol condensation is subjected to catalytic hydrogenation.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: June 9, 1992
    Assignee: BASF Atkiengesellschaft
    Inventors: Michael Huellmann, Thomas Kuekenhoehner, Karl Brenner, Rainer Becker, Matthias Irgang, Charles Schommer
  • Patent number: 5081311
    Abstract: Muscone of the formula I ##STR1## is prepared by a process in which an open-chain 2,15-diketone of the general formula IICH.sub.3 --CO--X--CO--CH.sub.3 (II)where X is one of the radicals--(--CH.sub.2 --).sub.12 -- (a)--CH.dbd.CH--(--CH.sub.2 --).sub.8 --CH.dbd.CH-- (b)--CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.6 --CH.dbd.CH--CH.sub.2 --(c)--CH.sub.2 --CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.4 --CH.dbd.CH--CH.sub.2 --CH.sub.2 -- (d) or--CH.sub.2 --CH.sub.2 CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.2 --CH.dbd.CH--CH.sub.2 --CH.sub.2 --CH.sub.2 -- (e)is brought into contact, at from 300.degree. to 400.degree. C. in the presence of from 5 to 15% by weight, based on the amount of catalyst, of water, in the gas phase, with a fixed-bed catalyst containing TiO.sub.2, CeO.sub.2 or the ThO.sub.2 as the catalytically active compound and the unsaturated cyclic ketone formed by intramolecular aldol condensation is subjected to catalytic hydrogenation.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: January 14, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Huellmann, Thomas Kuekenhoehner, Karl Brenner, Rainer Becker, Matthias Irgang, Charles Schommer
  • Patent number: 5068468
    Abstract: A process for the preparation of saturated alcohols by catalytic hydrogenation of acetylenic alcohols at a temperature of from 50.degree. to 200.degree. C. and under a pressure of from 30 to 320 bar, wherein use is made of a catalyst containing from 20 to 85% of nickel oxide, from 0 to 30% w/w of copper oxide, from 1 to 30% w/w of zirconium dioxide, from 1 to 30% w/w of silicon dioxide and from 1 to 30% w/w of aluminum oxide, by weight of the oxidic, unreduced catalyst.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: November 26, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Schossig, Gerhard Koppenhoffer, Matthias Irgang, Rudi Schnur, George Roley
  • Patent number: 5037793
    Abstract: A catalyst for the hydrogenation of unsaturated aliphatic compounds having a content of 20-70% w/w of nickel oxide, 25-45% w/w of zirconium oxide and 5-40% w/w of copper oxide, based on the oxidic, unreduced catalyst.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: August 6, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Toussaint, Juergen Schossig, Heinz Graefje, Wolfgang Reiss, Roland Spahl, Matthias Irgang, Walter Himmel, Gerhard Koppenhoefer