Patents Assigned to BASF
  • Method for regenerating a zeolitic catalyst
    Patent number: 6380119
    Abstract: A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from 0.1 to 4% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof, and (III) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from more than 4 to 100% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Ulrich Müller, Andreas Walch, Norbert Rieber, Wolfgang Harder
  • Method for reducing the C1-C2-aldehyde content formed from compounds with -CH2-CHR-O-or-CH(OH)-groups
    Patent number: 6380353
    Abstract: Organic compounds containing —CH2—CHR—O— and/or —CH2—CH(OH)— groupings (R=H, C1-C4-alkyl) produce, under the action of free radicals, small amounts of C1-C2-aldehydes, the content of which can be reduced to <1 ppm according to the novel process by adding compounds which can react with the aldehyde groups. The materials containing said groupings include many emulsifiers and protective colloids used in polymer chemistry, such as polyethylene glycols, polyvinyl alcohols or ethoxylation products of long-chain alcohols, phenols or amines. The process is of particular importance for the treatment of polymer dispersions which have been prepared by free-radical polymerization of monomers in the presence of such emulsifiers or protective colloids, and permits the preparation of aldehyde-free polymer dispersions and their use for sanitary and hygiene articles.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Robert Rupaner, Martin Scholtissek, Karl-Heinz Schumacher, Maximilian Angel
  • Stabilized monomer composition
    Patent number: 6379588
    Abstract: A monomer composition, which contains A) vinyl-containing monomers in which a heteroatom selected from the group consisting of the halogens, nitrogen, oxygen, sulfur and silicon is present on the vinyl group, and B) a compound or a mixture of compounds of the formula II  where R4 is methyl, ethyl, isopropyl, n-propyl, n-butyl, isobutyl, sec-butyl, tert-butyl or trimethylsilyl.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Friedrich Sutoris, Andreas Koch, Alexander Aumüller, Jacques Dupuis, Manfred Niessner
  • Temperature controlled radiation transmission material
    Patent number: 6379769
    Abstract: Disclosed is a temperature controlled radiation transmission material for plural component films, the material being present in one or more cores allsidedly surrounded by a transparent sheath layer. The plural component films are particularly useful for the reversibly temperature dependent control of the radiation transmission of buildings and of technical facilities, especially solar energy apparatus, in the apparel industry and/or for decorative purposes.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Kleinke, Thomas Kessler, Ekkehard Jahns
  • Continuous process for the production of sucrose based polyether polyols
    Patent number: 6380367
    Abstract: A continuous process for the formation of sucrose based polyols is disclosed. The process comprises the steps of continuously forming an aqueous sucrose solution which is continuously combined with a catalyst and an alkylene oxide and flowed through a first spiral reaction tube. The alkylene oxide substantially completely reacting with the aqueous sucrose solution occurs to form a pre-polymer reaction product in the first spiral reaction tube. The pre-polymer reaction product is continuously flowed from the first reaction tube and unreacted water from the pre-polymer reaction product is removed. The water stripped pre-polymer reaction product is continuously flowed through a second spiral reaction tube and additional alkylene oxide is continuously added to the second spiral reaction tube. The alkylene oxide reacts with the pre-polymer reaction product in the second spiral reaction tube to form a polyol.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: April 30, 2002
    Assignee: BASF Corporation
    Inventors: Werner Hinz, Edward Michael Dexheimer
  • Polymers for cosmetic formulations
    Patent number: 6380338
    Abstract: The invention relates to cosmetic formulation comprising polymers to which groups of the formula I are bonded where R is H or identical or different organic radicals, which may also be bonded to one another, and G is O or NH, as hair-setting polymers.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Witteler, Reinhold Dieing, Axel Sanner, Jacqueline Engesser, Wilma M. Dausch
  • Process for preparing polymers in the presence of triazolyl radicals
    Patent number: 6380315
    Abstract: A process for preparing polymers which comprises conducting polymerization in the presence of free radicals of the formula I where Q is NR2 or S and T is CR3R4 or S and R1, R2, R3 and R4 can be identical or different and independently are hydrogen, C1- to C20-alkyl or C6- to C18-aryl.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: April 30, 2002
    Assignees: BASF Aktiengesellschaft, Max-Planck Gesellschaft zur Foerderung der Wissenschaften e.V.
    Inventors: Michael Fischer, Jürgen Koch, Wolfgang Paulus, Klaus Müllen, Markus Klapper, Marco Steenbock, Daniel M. Colombani
  • Thermoplastic molding compounds
    Patent number: 6380306
    Abstract: Thermoplastic molding materials of A) from 72 to 88.5% by weight of a thermoplastic styrene or &agr;-methylstyrene polymer or copolymer, B) from 10 to 20% by weight of a first graft polymer having an average particle diameter d50 from 400 to 600 nm, having an n-butyl acrylate based rubber-elastic graft core, and a styrene or &agr;-methylstyrene (co)polymer graft shell, C) from 1.5 to 8% by weight of a second graft polymer having a bimodal particle size distribution, the average particle diameter d50 being from 25 to 200 nm and from 350 to 550 nm, having a butadiene or isoprene polymer or copolymer based rubber-elastic graft core, and a styrene or &agr;-methylstyrene (co)polymer graft shell, D) from 0 to 50% by weight of conventional additives, where the graft polymers B) and C) constitute from 11.5 to 25% by weight of components A), B) and C), and components A) to D) amount to 100% by weight.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: April 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Ittemann, Rainer Neumann, Joachim Seibring, Bernhard Rosenau, Manfred Kötting, Christophe Ginss, Norbert Güntherberg, Christian Meyer
  • Method of combating undesired plant growth on cereals
    Publication number: 20020049141
    Abstract: A method of combating undesired plant growth in cereals, in particular winter cereals such as wheat and barley, which comprises treating the locus of the cereals with an effective amount of one or more compounds of formula I: 1
    Type: Application
    Filed: May 18, 2001
    Publication date: April 25, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Helmut Siegfried Baltruschat, Axel Kleemann, Thomas Maier, Stefan Scheiblich
  • Ammonia-free polymer dispersions as additives in mineral building materials based on hydraulic binders
    Publication number: 20020049265
    Abstract: Ammonia-free polymer dispersions containing at least one copolymer which contains, as polymerized monomers,
    Type: Application
    Filed: August 20, 2001
    Publication date: April 25, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Stefan Dreher, Joachim Pakusch, Bernd Reck
  • 6-phenyl-pyrazolopyrimidines
    Publication number: 20020049318
    Abstract: 6-Phenyl-Pyrazolopyrimidines of formula I 1
    Type: Application
    Filed: December 12, 2000
    Publication date: April 25, 2002
    Applicant: BASF Corporation
    Inventors: Klaus Juergen Pees, Jordi Tormo i BLasco, Hubert Sauter, Oliver Cullman, Markus Gewehr, Wassilios Grammenos, Bernd Muller, Thomas Grote, Andreas Gypser, Joachim Rheinheimer, Peter Schafer, Frank Schieweck, Eberhard Ammermann, Siegried Strathmann, Gisela Lorenz, Reinhard Stierl
  • Dehydrogenation catalysts and methods
    Patent number: 6376422
    Abstract: Catalyst mixtures are comprised of zinc oxide, calcium carbonate or calcium oxide, and an amount of chromium (III) oxide in an amount sufficient to improve conversion and/or selectivity of cyclohexanol to cyclohexanone under cyclohexanol dehydrogenation conditions.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: April 23, 2002
    Assignee: BASF Corporation
    Inventors: Andrew J. McNabb, Karen A. Lewno, R. Merritt Sink
  • Promoter from Ashbya gossypii
    Patent number: 6376216
    Abstract: A DNA sequence containing a) the primary structure shown in SEQ ID NO:1 position 9 to 307 or b) a primary structure which hybridizes with the double strand containing a) under standard conditions and which has essentially the same promoter activities as a) is suitable as promoter.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: April 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Jose Luis Revuelta Doval, Maria Angeles Santos Garcia, Markus Pompejus, Harald Seulberger
  • Surface-treated superabsorbent polymer particles
    Patent number: 6376618
    Abstract: Surface-crosslinked superabsorbent polymer particles are obtained by treating 100 parts by weight of superabsorbent polymer particles with about 0.001 to about 10 parts by weight of an oxazolinium ion. The oxazolinium ion can be formed in situ by heating superabsorbent particles treated with an oxazolinium ion precursor, such as a hydroxyalkylamide. A stable oxazolinium ion also can be used to surface crosslink the SAP particle. Surface crosslinking the superabsorbent polymer particles with an oxazolinium ion increases both the rate of liquid absorption and the quantity of liquid absorbed and retained by the superabsorbent particles.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael A. Mitchell, David Eckert, Anthony S. Tomlin
  • Dendritic and highly branched polyurethanes
    Patent number: 6376637
    Abstract: In a process for preparing dendritic or highly branched polyurethanes by reacting diisocyanates and/or polyisocyanates with compounds containing at least two groups which are reactive toward isocyanates, at least one of the reactants contains functional groups having a different reactivity compared to the other reactant and the reaction conditions are selected so that only certain reactive groups react with one another in each reaction step.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: April 23, 2002
    Assignee: BASF Corporation
    Inventors: Bernd Bruchmann, Ulrike Ehe, Frank Wingerter, Konrad Stiefenhöfer, Ulrich Treuling
  • Process and apparatus for producing stably fine-particle powders
    Patent number: 6375873
    Abstract: The invention relates to a process and an apparatus for producing stably fine-particle powders. The invention starts from a process for producing stably fine-particle powders in which one or more substances A and one or more substances B are dissolved in supercritical fluids, and the solutions are decompressed along a holdup section. In the process, substances A and B are each dissolved in separate supercritical compressible fluids, and the holdup sections interpenetrate, with the solubility limit of A in the appropriate fluid being exceeded at an earlier time than is the solubility limit of B in the appropriate fluid.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: April 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Lockemann, Erik Lüddecke, Dieter Horn
  • Process for the manufacture of hydrogen peroxide
    Patent number: 6375920
    Abstract: A process for preparing a hydrogen peroxide solution having a hydrogen peroxide content of not less than 2.5% by weight, which comprises continuously reacting hydrogen and oxygen in an aqueous, alcoholic or aqueous/alcoholic reaction medium in the presence of a catalyst containing palladium.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: April 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Fischer, Gerd Kaibel, Achim Stammer, Klemens Flick, Stefan Quaiser, Wolfgang Harder, Klemens Massonne
  • Process for preparing a dispersing component comprising an inorganic oxide sol
    Patent number: 6376559
    Abstract: A process for preparing a dispersing component of an inorganic oxide sol which involves dehydrating an aqueous inorganic oxide sol by adding an azeotropic solvent to the aqueous inorganic sol to form an azeotropic mixture, carrying out azeotropic distillation and then surface-treating the dispersing component of the inorganic oxide sol with a silane coupling agent.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: April 23, 2002
    Assignee: BASF NOF Coatings Co., Ltd.
    Inventors: Keiji Komoto, Keishi Yoshikai, Masahiko Hirono, Yoshifumi Ohama
  • Synergistic growth-regulating mixture
    Patent number: 6376425
    Abstract: The invention provides novel mixtures of quaternary ammonium salts having plant growth-regulating properties. The salts, as well as other active ingredients used to regulate plant growth, are dissolved in solvents having either formula II(a) or II(b), as depicted below: or wherein “R” is Hydrogen or a C1-C18 alkyl, “n” is 0, 1,2 or 3, “A” is a C1-C6 alkene or a C1-C6 oxyalkylene, “m” is 1, 2, 3, 4 or 5, and “B” is a straight-chain or branched C2-C8 alkylene.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: April 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Reiner Kober, Karl-Heinrich Schneider, Hans Ziegler, Mary Elizabeth Callan, Charles W. Finch, Reinhold Stadler, Peter Hofmeister, Wilhelm Rademacher, Elmar Kibler, Reimer Göttsche
  • Herbicidal 3-(heterocycl-1-yl)-uracils
    Patent number: 6376426
    Abstract: The invention relates to novel 3-heterocycl-1-yluracils of formula I: wherein R1 and R2 together with the interjacent nitrogen atom form an optionally substituted, optionally benzo-condensed 5-membered heterocyclic ring and R3 through R5 have the meaning given in claim 1. The invention also relates to a method of the production of these substances and to herbicidal compositions containing such compounds as active ingredients.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: April 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Scheiblich, Trevor Newton, Peter Johannes Servaas Savio van Eijk, Isabel Waldeck