Patents Represented by Attorney, Agent or Law Firm John H. Shurtleff
  • Patent number: 6331656
    Abstract: In a process for the hydroformylation of olefins having from 12 to 100 carbon atoms in the presence of a cobalt carbonyl catalyst at pressures of from 100 to 400 bar and at from 100 to 200° C., depressurization and recovery of the cobalt catalyst by extraction with an aqueous acid solution in the presence of atmospheric oxygen, (a) the extraction is carried out in the presence of a polymeric emulsion breaker selected from the group consisting of alkoxylated compounds containing amino, imino or OH groups, and (b) to achieve complete phase separation in the organic phase still containing small amounts of aqueous phase, the formation of relatively large droplets of the dispersed aqueous phase is effected in a coalescence stage.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: December 18, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich-Josef Blankertz, Armin Volker Grenacher, Friedrich Sauer, Harald Schwahn, Willi Schönmann, Michael Röper
  • Patent number: 6214172
    Abstract: In a process for the preparation of methylglyoxal dimethyl acetal from methylglyoxal and methanol in the presence of an acidic ion exchanger, water is introduced in an amount sufficient to form an acidic reaction mixture in which the acetal product and water form an azeotropic mixture, with or without the retention of some methanol reactant. After subjecting a single phase acidic reaction mixture to an azeotropic distillation, it will separate into two distinct liquid phases with a simple recovery of the acetal product from the aqueous phase.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: April 10, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Carsten Gröning, Klaus Ebel, Gerd Kaibel, Jörg Therre, Jürgen Koopmann, Helmuth Menig, Gerhard Fritz, Rainer Dietz
  • Patent number: 6211113
    Abstract: A layered catalyst support or carrier provides a core member for carrying out non-steady state heterogeneously catalyzed processes where reaction gases and their products come in contact with a conventional catalyst applied to the carrier. The support as a carrier is made up of a large number of individually shaped particulate bodies or monolithic packings to be loaded into a reactor and maintained as a fluidized bed or a fixed bed during the non-steady state reaction and the recovery of the products. The support or carrier may consist of glass, quartz, oxides, nitrides, aluminosilicates, magnesium silicates, metals and carbon or their mixtures. Each shaped particle or monolithic packing of this core support is then completely enclosed by depositing thereon a thin protective layer of a nitride, oxide, carbide or chloride of a metal, a non-metal or a mixture thereof, which exhibits a dense, pore-free microstructure and a nonpolar surface having a very low density of acid centers.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: April 3, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Harth, Alfred Hagemeyer, Otto Watzenberger
  • Patent number: 6166265
    Abstract: Process for the preparation of n-butyraldehyde and/or n-butanol, whereina) 1,3-Butadiene or a butadiene-containing hydrocarbon mixture is reacted with an alcohol of the formula IROH I,where R is C.sub.2 -C.sub.20 -alkyl or alkenyl which is unsubstituted or substituted by 1 or 2 C.sub.1 -C.sub.10 -alkoxy or hydroxyl groups, or is C.sub.6 -C.sub.10 -aryl, C.sub.7 -C.sub.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: December 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Kanand, Rocco Paciello, Michael Roper
  • 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: 6096673
    Abstract: An improved process is provided for the recovery of catalyst components from oligomeric impurities which are formed during the industrial preparation of 2,5-dihydrofuran by the catalytic isomerization of vinyl oxirane followed by an essential separation of the oligomeric by-products which otherwise cause deactivation of the catalyst. The catalyst components consist essentially of (a) an onium iodide and (b) a Lewis acid selected from the group consisting of the chloride, bromide or iodide of the metals zinc, tin, cobalt and bismuth, preferably zinc, where the catalyst optionally includes a donor ligand.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: August 1, 2000
    Assignee: BASF Aktiengesellschaft
    Inventor: Martin Fischer
  • Patent number: 6036760
    Abstract: Aqueous liquid dye concentrates comprising, based on the weight of the concentrate, from 15 to 35% by weight of a dye quantity, from 90 to 100% by weight of the dye quantity consisting of the dye of the formula ##STR1## where Kat.sym. is the equivalent of a tertiary alkylalkanolammonium cation, are useful in the inkjet process.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: March 14, 2000
    Assignee: BASF Aktiengesellschaft
    Inventor: Rudolf Bermes
  • Patent number: 5952262
    Abstract: Preparation of aromatic or heteroaromatic nitrites of the formula I ##STR1## where X is nitrogen or C-R.sup.6 and all of the R substituents represent hydrogen, alkyl, halogen, nitro, amino or similar groups, provided at least one substituent is a cyano or alkylcyano group. The nitrites I are produced by reacting aromatic or heteroaromatic hydrocarbons of the formula II ##STR2## where X is nitrogen or C-R.sup.6, provided at least one substituent is C.sub.1 -C.sub.8 -alkyl, with ammonia and oxygen at 200 to 600.degree. C. under a pressure of 0.1 to 5 bar in the gas phase over a supported catalyst containing 0.5 to 20% by weight of vanadium oxide. The supported catalyst consists of from 2 to 30 particle fractions whose mean diameters differ by from 10 to 80% and the supporting carrier of the catalyst has a bulk density of 0.6 to 1.2 kg/liter.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: September 14, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Lothar Karrer, Frank-Friedrich Pape, Heinz-Josef Kneuper, Michael Hullmann
  • Patent number: 5939595
    Abstract: A process for preparing diarylethanes of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each hydrogen or C.sub.1 -C.sub.8 -alkyl, by reacting aromatic compounds of the general formula II ##STR2## where R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 have the abovementioned meanings, with styrenes of the general formula III ##STR3## where R.sup.1 has the abovementioned meanings, at from -20 to 300.degree. C. under from 1 to 100 bar in the presence of heterogeneous catalysts, wherein beta-zeolites or mordenites are used as heterogeneous catalysts.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: August 17, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Eugen Gehrer, Klemens Massonne, Hermann Gausepohl, Martin Fischer, Christopher William Rieker, Lorenz Siggel
  • Patent number: 5935897
    Abstract: Monomodal or polymodal catalyst supports or catalysts having a BET specific surface area of from 0.01 to 250 m.sup.2 /g and a monomodal or polymodal pore size distribution having a mean pore diameter of from 50 to 300,000 nm measured by the mercury pressure porosimetry method, whereina) from 10 to 95% of the pore volume is at from 0.2 to 100 times the mean pore diameter and/orb) from 10 to 80% of the pore volume is at from 0.8 to 100 times the mean pore diameter and/orc) from 50 to 95% of the pore volume is at from 0.2 to 1 times the mean pore diameter and/ord) from 50 to 80% of the pore volume is at from 0.8 to 1 times the mean pore diameter ande) the width at half height of the pore size distribution is less than 0.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: August 10, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Trubenbach, Alfred Hagemeyer, Gunter Lauth, Uwe Dingerdissen, Franz Josef Brocker, Klemens Flick
  • Patent number: 5935898
    Abstract: Monomodal or polymodal catalyst supports or catalysts having a BET specific surface area of from 0.01 to 250 m.sup.2 /g and a monomodal or polymodal pore size distribution having a mean pore diameter of from 50 to 300,000 nm measured by the mercury pressure porosimetry method, whereina) from 10 to 95% of the pore volume is at from 0.1 to 3 times the mean pore diameter and/orb) from 10 to 80% of the pore volume is at from 0.4 to 3 times the mean pore diameter and/orc) from 50 to 95% of the pore volume is at from 0.1 to 1 times the mean pore diameter and/ord) from 50 to 80% of the pore volume is at from 0.4 to 1 times the mean pore diameter ande) the width at half height of the pore size distribution is less than 0.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: August 10, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Trubenbach, Alfred Hagemeyer, Gunter Lauth, Uwe Dingerdissen, Franz Josef Brocker, Klemens Flick
  • Patent number: 5919987
    Abstract: An industrial preparation of aldehydes and/or alcohols from olefins of more than 3 carbon atoms by a catalytic hydroformylation of the olefin reactant at a pressure of from 50 to 1000 bar and a temperature of from 50 to 180.degree. C. in the presence of an uncomplexed rhodium catalyst homogeneously dissolved in the reaction medium. The catalytic activity of the rhodium is maintained, first by extracting it from the initially discharged reaction mixture by means of an aqueous solution of a nitrogen-containing complexing agent such as sulfonated or carboxylated pyridines, quinolines or the like. In a recycle of the complexed rhodium to be reused in the hydroformylation reaction, the aqueous rhodium-containing extract is fed to a precarbonylation stage where it subjected to a required precarbonylation in the presence of an essentially water-insoluble organic liquid and in the presence of carbon monoxide, synthesis gas or another gas mixture containing carbon monoxide at from 50 to 1000 bar and from 50 to 180.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: July 6, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz-Josef Kneuper, Maik Aron, Frank-Michael Korgitzsch, Michael Nilles, Wolfgang Harder, Michael Roper, Rocco Paciello
  • Patent number: 5914407
    Abstract: A process for preparing piperid-2-one by reacting polymers of delta-valerolactone having a molecular weight of from 200 to 20,000 with ammonia under an inert atmosphere at temperatures of from 250 to 500.degree. C. and pressures of from 30 to 500 bar in valerolactone or in an inert solvent thereby avoiding the use of any special catalyst.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: June 22, 1999
    Assignee: BASF Aktiengesellschaft
    Inventor: Lothar Franz
  • Patent number: 5905161
    Abstract: Process for regenerating a silver catalyst deactivated by coking during the gas phase epoxidation of 1,3-butadiene by reacting the coked catalyst with a gas mixture containing at least 5% by volume of water vapor and up to 95% by volume of oxygen at temperatures of from 100 to 500 .degree. C.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 18, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Boeck, Klaus Herzog, Rolf Fischer, Herbert Vogel, Martin Fischer
  • Patent number: 5900508
    Abstract: A process for the preparation of amines by reacting an olefin with ammonia or a primary or secondary amine at a temperature of from 200 to 350.degree. C. and a pressure of from 100 to 300 bar in the presence of at least one zeolite having the specific structure type PSH-3, MCM-22 or SSZ-25, as identified by X-ray diffractogram, or mixtures of these zeolites. These specific catalysts are broadly identified as alumina zeolites and may be modified by ion exchange, doping with other metals, by dealumination to remove or replace the alumina content and by other well known after treatments such as calcination, acid-treatment and the like. Monoolefins are preferred reactants but di- and polyolefins also can be reacted with relatively high selectivity and less tendency toward polymerization.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: May 4, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Karsten Eller, Ulrich Muller, Rudolf Kummer, Peter Stops
  • Patent number: 5892121
    Abstract: A process for the purification of tertiary phosphine oxides obtained in a Wittig synthesis as a contaminated by product resulting from the reaction of the corresponding tertiary phosphines, especially triphenylphosphine. The contaminated tertiary phosphine oxides coming from this Wittig synthesis have the formula I ##STR1## in which R.sup.1, R.sup.2, and R.sup.3 denote C.sub.1 -C.sub.12 alkyl, C.sub.5 -G.sub.8 cycloalkyl, aryl, C.sub.7 -C.sub.20 aralkyl, or C.sub.7 -C.sub.20 alkylaryl. The contaminated phosphine oxide I or phosphine oxide I-containing mixtures, optionally in an inert solvent, are first caused to react with an inorganic or organic acid at temperatures of from 0.degree. to 150.degree. C. to form a crystallized acid salt. The resulting salt crystals are then treated in a purifying step with water or an inorganic base or an organic base to again form the tertiary phosphine oxide.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 6, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Hermeling, Randolf Hugo, Hardo Siegel
  • Patent number: 5886209
    Abstract: A multi-stage catalytic process for preparing a 2-(4-hydroxyphenoxy)-propionate, especially methyl 2-(4-hydroxyphenoxy)-propionate, with a purity greater than 99% by esterifying the corresponding 2-(4-hydroxyphenoxy)-propionic acid with an excess amount of alcohol, e.g. methyl alcohol, in a series of at least 2 up to 10 sequential stages at temperatures of 20.degree. to 150.degree. C. and pressures of 0.05 to 5 bar in the presence of a distillable acid catalyst such as hydrochloric acid or hydrogen chloride. In a first esterification stage, unreacted alcohol is removed from the ester product in vacuo at temperatures of 30.degree. to 100.degree. C. together with other volatile components, including the acid catalyst. Without a separate purification of the resulting ester as the bottoms product of the first stage, the esterification step is repeated in at least one additional stage. The final ester product of this multi-stage process is characterized by a water content of less than 0.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: March 23, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Wettling, Manfred Dimmler, Bernd Hupfeld, Jochem Henklemann
  • Patent number: 5874631
    Abstract: A method for increasing the shelf life of liquid hydroxy- and alkoxyalkyl ketones by adding from 0.0001 to 1% by weight of a base is described.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: February 23, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Ross, Ludwig Wambach, Harro Wache
  • Patent number: 5866716
    Abstract: A process for selectively preparing a carboxylic acid by reacting an olefin with carbon monoxide in the presence of at least an equimolar amount of water with respect to the olefin at a temperature of from 50.degree. to 150.degree. C.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: February 2, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Schafer, Arthur Hohn, Ferdinand Lippert
  • Patent number: 5856543
    Abstract: Silanes of the general formula I ##STR1## wherein n is an integer of from 1 to 5, at least one of the residues R represents a hydrolyzable residue selected from the group of substituents consisting of halogen, alkoxy, sec. amino and oxycarbonyl hydrogen or oxycarbonyl alkyl, and the other residues represent alkyl, cycloalkyl, aryl or one of the said hydrolyzable residues, a process for their preparation, and their use.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: January 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Friedrich, Harald Keller, Bernd Leutner