Patents Assigned to BASF Aktiengesellschaft
  • Method for producing crystalline, zeolitic solid matter
    Patent number: 6805851
    Abstract: Process for the preparation of a crystalline solid comprising at least one zeolitic material, in which the solid is crystallized from at least one precursor compound and the reaction discharge of the crystallization is fed directly to a drying stage.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: October 19, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Müller, Friedrich Hill, Norbert Rieber
  • Heterogeneously catalyzed partial direct oxidation of propane and/or isobutane
    Publication number: 20040204607
    Abstract: A process for heterogeneously catalyzed partial direct oxidation of propane and/or isobutane, in which target product is removed in a workup stage from the product gas mixture obtained in the reaction stage, the remaining residual product gas mixture is divided into two portions of the same composition, one portion is recycled into the reaction stage and the other portion is discharged, and both the reaction stage and the workup stage are operated at elevated pressure.
    Type: Application
    Filed: April 2, 2004
    Publication date: October 14, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Otto Machhammer, Sven Crone, Frieder Borgmeier, Klaus Joachim Muller-Engel, Christoph Adami, Armin Diefenbacher
  • Perylene-derivative based crystallization modifiers
    Publication number: 20040200388
    Abstract: Perylene derivatives of the general formula I 1
    Type: Application
    Filed: May 6, 2004
    Publication date: October 14, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Claus Hackmann, Paul Gunthert, Anton Dotter, Peter Blaschka
  • Surface-treated superabsorbent polymer particles
    Patent number: 6803107
    Abstract: Surface-treated superabsorbent polymer particles obtained by mixing 100 parts by weight of superabsorbent polymer particles with 0.001 to 10 parts by weight of a hydroxyalkylamide, and heating the surface-treated superabsorbent polymer particles to crosslink molecular chains existing at least in the vicinity of the surfaces of the superabsorbent polymer particles is disclosed. Surface crosslinking the superabsorbent polymer particles with a hydroxyalkylamide substantially increases both the rate of liquid absorption and the quantity of liquid absorbed and retained by the superabsorbent particles.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael A. Mitchell, David Eckert, Thomas W. Beihoffer
  • Antifreeze concentrates based on dicarboxylic acids, molybdate and triazoles or thiazoles, and coolant compositions comprising them
    Patent number: 6802988
    Abstract: Antifreeze concentrates are based on a mixture of at least two different C3- to C16-dicarboxylic acids, molybdate and a mixture of at least two different triazoles or thiazoles.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Wenderoth, Ralf Strauss, Jacques Lonchampt
  • Nitrification inhibitors, and the use of polyacids which contain a nitrification inhibitor for the treatment of inorganic fertilizers
    Patent number: 6802882
    Abstract: The use of inorganic or organic polyacids for the treatment of inorganic fertilizers, in particular the use of the polyacids as a mixture with at least one nitrification inhibitor for the treatment of inorganic fertilizers; the use of selected pyrazole derivatives as nitrification inhibitor in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations, as well as the corresponding treated inorganic fertilizers per se; and novel pyrazole derivatives which can be used as nitrification inhibitors in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations are described.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Barth, Norbert Rieber, Randall Evan Gold, Jürgen Dressel, Klaus Erhardt, Klaus Horchler von Locquengh, Edgar Leibold, Stefan Rittinger
  • Method for producing maleic acid anhydride
    Patent number: 6803473
    Abstract: In a process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of hydrocarbons having at least four carbon atoms using oxygen-containing gases in the presence of a volatile phosphorus compound over a catalyst comprising vanadium, phosphorus and oxygen in a shell-and-tube reactor unit having at least two successive cooled reaction zones, the temperature of the first reaction zone is from 350 to 450° C. and the temperature of the second and further reaction zones is from 350 to 480° C. and the temperature difference between the hottest reaction zone and the coolest reaction zone is at least 2° C.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Jens Weiguny, Sebastian Storck, Andreas Tenten, Wilhelm Ruppel
  • Method for the polymerization of olefins
    Patent number: 6803431
    Abstract: The polymerization of olefins is carried out in the presence of catalysts comprising at least one complex of a transition metal with a tridentate macrocyclic ligand which additionally bears at least one functional substituent and, if desired, one or more activator compounds. A catalyst system comprising at least one transition metal complex as set forth above and at least one activator compound is also provided.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Shahram Mihan, Dieter Lilge, Günther Schweier, Randolf Köhn, Guido Seifert
  • Thickeners for aqueous dispersions
    Patent number: 6803405
    Abstract: The invention relates to the aqueous preparation of a polymer. Said preparation contains a copolymer consisting of a) 30 to 79.5 wt. % N-vinylpyrrolidone, b) 20 to 69.5 wt. % vinylacetate, c) 0.5 to 25 wt % of a monovinyl ester of a C4 to C20 monocarboxylic acid and d) 0 to 40 wt. % of an additional, copolymerisable, ethylenically unsaturated compound.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schnell, Michael Kerber, Eberhard Schupp, Eckehardt Wistuba
  • Polyurethane foams
    Publication number: 20040198851
    Abstract: The invention relates to polyurethane foams comprising
    Type: Application
    Filed: April 26, 2004
    Publication date: October 7, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Armin Becker, Bernd Bruchmann, Andreas Arlt, Ulrich Treuling, Rainer Rahm, Juergen Decker, Ulrich Steuerle, Martin Kreyenschmidt, Willi Riegel, Werner Bertleff
  • Preparation of readily water-redispersible and water-wettable polymer powders
    Publication number: 20040198896
    Abstract: A readily water-redispersible and water-wettable polymer powder is prepared by spray-drying of an aqueous dispersion of polymer particles with admixing of a hydrophilic and of a hydrophobic antiblocking agent.
    Type: Application
    Filed: April 2, 2004
    Publication date: October 7, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Joachim Pakusch, Ines Pietsch, Hans-Jurgen Denu, Heinrich Sack, Bernd Reck
  • Perylene derivatives and their application as dispersants
    Publication number: 20040194665
    Abstract: The present invention relates to substituted perylene derivatives in which the substituent has a sterically stabilizing and/or electrostatically stabilizing effect. The perylene derivatives of the invention are particularly suitable as pigment dispersants. The present invention additionally relates to pigment preparations in which the perylene derivatives of the invention are used.
    Type: Application
    Filed: January 20, 2004
    Publication date: October 7, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Konemann, Ulrike Hees, Valerie Pierre
  • Process for the production of aqueous polymer dispersions
    Patent number: 6800699
    Abstract: Process for the production of aqueous polymer dispersions by reaction of one or more olefinically unsaturated compounds in aqueous medium in the presence of a complex compound which possesses the structural element Y—M—E, E standing for nitrogen, M for a transition metal of groups 7 to 10 of the periodic system of the elements and Y for oxygen, sulfur, nitrogen or phosphorus, and which possesses no hydrophilic groups in its ligand system.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: October 5, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Schmid, Mubarik Mahmood Chowdhry, Marc Oliver Kristen, Stefan Mecking, Florian M. Bauers
  • Thermal insulating coating
    Patent number: 6800337
    Abstract: The invention relates to a heat-insulating coating which comprises one or more cholesteric IR-reflecting layers and to processes for its preparation and to its use.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: October 5, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Siemensmeyer, Peter Schuhmacher, Frank Meyer, Norbert Schneider, Hiroki Ishida
  • Polyureas and water-soluble or water-dispersible polymeric salts
    Patent number: 6800276
    Abstract: The present invention relates to polymers, polyureas and water-soluble or water-dispersible polymeric salts, a cosmetic or pharmaceutical composition which comprises at least one such polymer, and to the use of the polymers.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: October 5, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Son Nguyen Kim, Axel Sanner, Peter Hössel
  • Suspension of multimetal cyanide compounds, their preparation and their use
    Patent number: 6800583
    Abstract: Catalyst suspensions for the ring-opening polymerization of alkylene oxides comprise a) at least one multimetal cyanide compound having a crystalline structure and a content of platelet-shaped particles of at least 30% by weight, based on the multimetal cyanide compound, and b) at least one organic complexing agent c) water and/or d) at least one polyether and/or e) at least one surface-active substance, with the proviso that at least component a) and at least two of the components b) to e) have to be present.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: October 5, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Kathrin Harre, Jörg Erbes, Reinhard Lorenz, Stephan Bauer, Thomas Ostrowski, Eva Baum, Dieter Junge, Edward Michael Dexheimer
  • Hydrophilic, open-cell, elastic foams with a melamine/formaldehyde resin base, production thereof and use thereof in hygiene products
    Patent number: 6800666
    Abstract: Hydrophilic open-celled resilient foams containing melamine-formaldehyde resins, characterized by a droplet absorption rate of less than 5 seconds and an EU standard EN ISO 14184-1 formaldehyde emission of less than 100 mg of formaldehyde/kg of foam, and obtainable by (a) heating an aqueous solution or dispersion each containing at least a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a curing agent to form a foam and crosslink the precondensate, (b) then conditioning the foam at from 120 to 300° C. for from 1 to 180 minutes to remove volatiles, and (c) treating the foam during the conditioning or thereafter with at least one hydrophilicizer and/or with ozone, a corona discharge or a plasma, are useful in hygiene articles to acquire, distribute and immobilize body fluids.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: October 5, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Hähnle, Horst Baumgartl, Martin Beck, Norbert Herfert, Bernhard Mohr, Jürgen Huff
  • Heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid
    Publication number: 20040192963
    Abstract: In a process for partially oxidizing acrolein to acrylic acid in the gas phase under heterogeneous catalysis, the starting reaction gas mixture is oxidized at an acrolein loading of ≦145 and ≧70 l (STP) of acrolein/l of fixed catalyst bed·h over a fixed catalyst bed which is accommodated in two successive reaction zones A, B, the highest temperature of the reaction gas mixture within reaction zone A being above the highest temperature of the reaction gas mixture within reaction zone B.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 30, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Jochen Petzoldt, Klaus Joachim Muller-Engel, Heiko Arnold
  • Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid
    Publication number: 20040191953
    Abstract: In a process for partially oxidizing propene to acrylic acid in the gas phase under heterogeneous catalysis, a starting reaction gas mixture comprising propene and oxygen and having a specific composition is oxidized in a first reaction stage over a first fixed catalyst bed having a volume-specific activity which is constant or increases in the flow direction and the acrolein-containing product gas mixture of the first reaction stage is subsequently oxidized in a second reaction stage over a second fixed catalyst bed having a volume-specific activity increasing in the flow direction, and the shaped catalyst bodies of both fixed catalyst beds are annular and each have a specific multimetal oxide composition.
    Type: Application
    Filed: June 20, 2003
    Publication date: September 30, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Jochen Petzoldt, Klaus Joachim Muller-Engel, Hans Martan
  • Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid
    Publication number: 20040192965
    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, the propene-containing starting reaction gas mixture is oxidized in a first reaction stage using a fixed catalyst bed 1 which consists of a plurality of fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the acrolein-containing product gas mixture of the first reaction stage is then oxidized in a second reaction stage using a fixed catalyst bed 2 which consists of a plurality of fixed catalyst bed zones and is accommodated in two successive temperature zones C, D, and the transition from one temperature zone to another temperature zone within one reaction stage does not spatially coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Martin Dieterle, Heiko Arnold, Wilhelm Ruppel, Klaus Joachim Mueller-Engel