Patents Assigned to BASF Aktiengesellschaft
  • Method for the continuous production of 2-bromo-2-nitro-1,3-propanediol
    Patent number: 6867336
    Abstract: In a process for the continuous preparation of 2-bromo-2-nitro-1,3-propanediol, nitromethane is firstly reacted with formaldehyde and alkali metal hydroxide and the reaction mixture obtained in this way is subsequently reacted with bromine.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Günter Scherr, Thomas Bogenstätter, Jürgen Huff
  • Method of producing glyphosate or a salt thereof
    Patent number: 6867326
    Abstract: In a process for preparing N-phosphonomethylglycine or a salt thereof by bringing phosphonomethyliminodiacetic acid or a salt thereof into contact with at least one oxygen-containing oxidant in the presence of a heterogeneous catalyst, the heterogeneous catalyst comprises at least one silicate.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Müller, Hans Rupert Merkle
  • Waste water treatment in a method for producing formic acid which is free of water
    Patent number: 6867329
    Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Auer, Bernd Bessling, Hans Hammer, Hans Hasse, Friedrich Sauer, Maximilian Vicari, Till Adrian
  • Preparation and purification of hydroxylamine stabilizers
    Patent number: 6867327
    Abstract: The invention relates to the preparation of ultra-high purity 1,2-diaminocyclohexanetetraacetic acid being essentially free of unwanted metal and metal ion contaminants and its use as a stabilizer for ultra-high purity hydroxylamine compounds used extensively in the production of high premium electronic components.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Irl E. Ward, Danielle Anne French
  • Method and device for the continuous production of organic mono or polyisocyanates
    Patent number: 6867324
    Abstract: Starting material streams are mixed in a mixer (13) for the phosgenation of amines by a process in which the reaction product (3) is removed in a closed loop and the starting material streams (1.2) contain organic solvents. The main streams (1.1, 2.1) and/or part-streams (1.2, 2.2) of the starting materials (1, 2) come into contact with one another according to the countercurrent principle.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Wölfert, Ulrich Penzel
  • Method for producing deoxybenzoins
    Patent number: 6867331
    Abstract: The invention describes a process for the preparation of 1,2-diarylethanones by reaction of an arylacetonitrile and an aromatic compound and hydrolysis of the ketimine compound formed, where the solvent used for the reaction is at least one dialkyl ether of a mono- or polyalkylene glycol or a cyclic ether having at least two oxygen atoms. The process produces good yields at room temperature, and drying of the solvent is not required.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventor: Sylke Haremza
  • Grafted polymers as gas hydrate inhibitors
    Patent number: 6867262
    Abstract: Graft polymers are used as gas hydrate inhibitors.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Maximilian Angel, Karin Neubecker, Axel Sanner
  • Method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane
    Patent number: 6867328
    Abstract: The invention relates to a method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane on a multi-metal oxide mass, said mass containing the elements Mo, V, Te and/or Sb and having a specific X-ray diffractogram.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Frieder Borgmeier, Andreas Tenten, Hartmut Hibst, Klaus Joachim Müller-Engel, Signe Unverricht, Gerhard Cox
  • Liquid antimicrobial compositions
    Patent number: 6866869
    Abstract: A liquid antimicrobial composition comprises: (1) a mixture of iodide anions and thiocyanate anions; (2) periodic acid or an alkali metal salt thereof; and (3) optionally, a peroxidase. The composition may be used as a microbicide, disinfectant or for suppressing or killing viruses or spores.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Graham Guthrie, Mohammed Shoaib Qureshi, Lawrence Alan Staniforth, Darren Michael Hodgkinson, David Wilson Ashworth
  • Catalyst for epoxidation reactions
    Publication number: 20050054865
    Abstract: The present invention relates to the manufacture of solid materials or shaped bodies containing at least one zeolite and being at least partly crystalline. Furthermore, the present invention relates to the solid materials or shaped bodies as such and to the use of these materials for reactions of compounds having at least one C—C double bond with at least one hydroperoxide. Specifically, the present invention relates to a process for the manufacture of a solid material containing at least one zeolite and being at least partly crystalline, wherein the synthesis of the said solid material involves at least one partial step of contacting at least one transition metal oxide source with at least one epoxide or hydrolysate thereof prior to or during the at least partial crystallization of said solid material.
    Type: Application
    Filed: September 13, 2004
    Publication date: March 10, 2005
    Applicant: BASF Aktiengesellschaft
    Inventors: Ulrich Muller, Georg Krug, Peter Bassler, Hans-Georg Gobbel, Peter Rudolf, Joaquim Teles
  • Use of hydrophilic graft copolymers containing N-vinylamine and/or open-chain N-vinylamide units in cosmetic formulations
    Patent number: 6864330
    Abstract: The invention relates to the use of graft copolymers obtained by radical graft copolymerisation of a) at least one open-chained N-vinylamide compound of general formula (I) wherein R1, R2, R3 represents H or C1-C6-alkyl and b) optionally, one or several other copolymerizeable monomers on a polymer graft base c) for cosmetic applications, with the proviso that if the polymer graft base is a compound containing polyether, the copolymerizeable polymer b) does not represent vinylester
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Tanja Schneider, Michael Gotsche, Anton Negele, Son Nguyen Kim, Stefan Frenzel, Claudia Wood
  • Distillation of styrene
    Patent number: 6863779
    Abstract: A process for the distillation of vinylaromatic monomers in the presence of 4-tert-butylcatechol (TBC) and oxygen, wherein no aromatic nitro or amino compound is present in any effective amount. The process is particularly suitable for destabilizing and purifying styrene which has been stabilized with 4-tert-butylcatechol (TBC) for transportation.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Paulus Schmaus, Werner Georg Metzger
  • Expandable polyolefin particles
    Patent number: 6864298
    Abstract: The invention relates to expandable polyolefin beads which comprise blowing agent and have been coated with from 0.01 to 3% by weight of a salt and/or ester of a long-chain fatty acid, preferably with calcium stearate, to prevent caking during foaming.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Maletzko, Uwe Keppeler, Klaus Hahn, Isidor de Grave
  • Defoamer and/or deareator on the basis of oil-in-water dispersions
    Patent number: 6864292
    Abstract: Antifoams and/or deaeraters based on oil-in-water dispersions contain, in the hydrophobic oil phase, 3-thiaalkan-1-ols, 3-thiaoxoalkan-1-ols, 3-thiadioxoalkan-1-ols, esters of said compounds or mixtures thereof as compounds having an antifoam and/or deaerating effect, and 3-thiaalkan-1-ols, 3-thiaoxoalkan-1-ols, 3-thiadioxoalkan-1-ols, esters of said compounds or mixtures thereof are used as antifoams and/or deaeraters.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Dyllick-Brenzinger, Erhard Guenther, Primoz Lorencak, Günther Glas, Johann Bonn
  • Iron oxides of reduced chloride content
    Patent number: 6863877
    Abstract: A process for removing chloride from chloridic iron oxide comprises mixing said chloridic iron oxide with an acid and subsequently conducting a thermal treatment at from 50 to 1300° C.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Walsdorff, Hermann Petersen, Klaus Harth, Michael Baier
  • Stable, aqueous dispersions and stable, water-dispersible dry powders of xanthophylls, and production and use of the same
    Patent number: 6863914
    Abstract: A process for preparing a stable, aqueous dispersion or a stable water-dispersible dry powder of xanthophylls selected from the group consisting of astaxanthin, lutein and zeaxanthin, by a) dissolving one or more of the abovementioned xanthophylls in a water-miscible organic solvent or a mixture of water and a water-miscible organic solvent at temperatures above 30° C., b) mixing this solution with an aqueous solution of a protective colloid, the solvent component being transferred into the aqueous phase, and the hydrophobic phase of the xanthophyll resulting as nanodisperse phase c) and, where appropriate, converting the dispersion which has formed into a water-dispersible dry powder by removing the solvent and the water and drying, where appropriate in the presence of a coating material, wherein casein or a caseinate is used as protective colloid in step b).
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Auweter, Heribert Bohn, Erik Lūddecke
  • Method for producing propylene hydroformylation products and acrylic acid and/or acrolein
    Patent number: 6864391
    Abstract: A process for preparing hydroformylation products of propylene and for preparing acrylic acid and/or acrolein comprises a) feeding a propylene-containing feed in which from 2 to 40% by weight of propane is present and also carbon monoxide and hydrogen into a reaction zone and reacting this mixture in the presence of a hydroformylation catalyst to form hydroformylation products of propane, b) separating a stream consisting essentially of unreacted propylene and propane from the output from the reaction zone, and c) subjecting the stream consisting essentially of propylene and propane to a catalytic gas-phase oxidation in the presence of molecular oxygen to form acrylic acid and/or acrolein.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Roland Krokoszinski, Ulrich Hammon, Kevin Todd
  • Continuous process for the cyanoalkylation of compounds having one or more NH functions
    Patent number: 6861548
    Abstract: The invention relates to a continuous process, carried out in two steps, for the cyanoalkylation of compounds having one or more NH functions by reaction thereof with carbonyl compounds and hydrocyanic acid, in which the first step is carried out without pressure at a temperature which is below the boiling point of the reaction mixture.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: March 1, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Greindl, Gerold Braun, Friedrich Wirsing, Georg Krug
  • Printing inks and lacquers containing polyolefin waxes
    Patent number: 6860929
    Abstract: Printing inks and paints comprising a polyolefin wax component prepared from one or more olefins by catalysis using a single-site catalyst based on a complex of a transition metal from groups 5 to 8 of the Periodic System of the Elements, which comprises not more than one cyclopentadienyl system per transition metal.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: March 1, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Shahram Mihan, Andreas Deckers
  • Assembly adhesive based on an aqueous polymer dispersion
    Publication number: 20050043473
    Abstract: The present invention relates to an adhesive comprising at least one copolymer selected from the group consisting of ethylenically unsaturated monocarboxylic and dicarboxylic acids, their anhydrides, their ester derivatives, and mixtures thereof and also at least one thickener and further customary auxiliaries. The present invention also relates to the preparation of this adhesive and to its use as an assembly adhesive.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 24, 2005
    Applicant: BASF Aktiengesellschaft
    Inventors: Alexander Centner, Dieter Flick, Christina Wichmann