Patents Assigned to BASF
  • Treatment of polyamide with gas phase of acid, anhydride or amine
    Publication number: 20020019513
    Abstract: The end group content of polyamide in the solid state may be reduced by treating the polyamide with gas-phase acid, anhydride, or amine. Stain- or dye-resistant polyamide fibers can be made by reducing the number of amino end groups. Reduction in the number of carboxylic end groups reduces the rate of regeneration of starting monomers during extrusion.
    Type: Application
    Filed: December 18, 2000
    Publication date: February 14, 2002
    Applicant: BASF Corporation
    Inventors: Otto M. Ilg, Harry Y. Hu, Scott R. Brank
  • Cosmetic and pharmaceutical preparations comprising ascorbic acid derivatives
    Patent number: 6346254
    Abstract: Use of ascorbic acid derivatives of the formula I where the variables independently of one another have the following meanings: R1 is hydrogen, C1-C20-acyl, C1-Cl2-alkoxycarbonyl, C1-C12-alkyl, R2 is hydrogen, C1-C20-acyl, C1-Cl2-alkoxycarbonyl, C1-C12-alkyl, where R1 and R2, together with the oxygen atoms to which they are bonded and the carbon atoms bonded to the oxygen atoms, can form an unsubstituted or substituted heterocycle, R3 is hydrogen or a cation selected from the group consisting of NH4+, alkali metal and alkaline earth metal cations, R4 is C1-C12-alkoxycarbonyl, for cosmetic and pharmaceutical preparations is described.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Streicher, Bernd Ostersehlt, Horst Westenfelder
  • Impact-resistant molding compound made of styrene polymers
    Patent number: 6346572
    Abstract: A molding material as based on from 60 to 98% by weight of a hard matrix A comprising polymerized or copolymerized units of at least one vinylaromatic monomer or at least one vinylaromatic monomer and at least one polar comonomer and from 2 to 40% by weight, the percentages in each case being based on the molding material comprising A and B, of a soft phase B formed from a hydrogenated or unhydrogenated block copolymer prepared by anionic polymerization and comprising a vinylaromatic monomer V and a diene D, having at least one random or quasi-random block (V/D) of vinylaromatic monomer and diene and containing from 10 to 80% by weight, based on the soft phase B, of occlusions of matrix material (a) formed during the polymerization of the hard matrix A in the presence of the block rubber, and said molding material is used for the production of films, sheets or moldings.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Loth, Konrad Knoll, Hermann Gausepohl
  • Method for producing cyanovaleric acid or esters thereof
    Patent number: 6346640
    Abstract: The process comprises reacting 2-, 3- or 4-pentenenitrile or mixtures thereof with carbon monoxide and a hydroxyl compound in the presence of a catalyst system comprising (i) a palladium(II) compound, (ii) a bidentate diphosphine ligand and (iii) an anion source. Novel catalyst systems containing diphosphine ligands of the bis(phosphinomethyl)amine type are also described.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Slany, Martin Schäfer, Michael Schulz
  • Cationic azo-dyes
    Patent number: 6346609
    Abstract: Cationic azo dyes of the general formula I where R1, R2, R3, A1, A2, B1, B2, An⊖, n and K have the meaning given in the specification are prepared and used for the dyeing and printing of natural or synthetic substrates and mixtures thereof.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Etzbach, Torsten Freund, Rainer Tresch
  • Monomer and polymerization process
    Patent number: 6346591
    Abstract: The &bgr;-hydroxy carbamate, ethylenically unsaturated monomer of the invention can be polymerized as a homopolymer or copolymerized with other monomers. The polymerization can be carried out in an aqueous medium. The &bgr;-hydroxy carbamate monomer is polymerized to form water-soluble homopolymers or, if polymerized as a mixture with one or more comonomers, copolymers that are soluble, emulsifiable, or dispersible in water. The &bgr;-hydroxy carbamate monomer can be used as a replacement monomer for acrylamide.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: February 12, 2002
    Assignee: BASF Corporation
    Inventors: Walter H Ohrbom, Patricia A. Herrel
  • Cis-bridged metal complexes and catalyst systems containing the same
    Patent number: 6346324
    Abstract: Disclosed is a cis-bridged metal complex of the formula (I) where R5 is an electron-withdrawing radical, and catalyst systems based on these complexes for copolymerizing carbon monoxide and olefinically unsaturated compounds.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Queisser, Michael Slany, Ansgar Schäfer, Michael Schulz
  • Method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine
    Patent number: 6346641
    Abstract: A process for the coproduction of 6-aminocapronitrile and hexamethylenediamine starting from adiponitrile by a) hydrogenating adiponitrile in the presence of a catalyst comprising an element of the eighth transition group as catalytically active component, to obtain a mixture comprising 6-aminocapronitrile, hexamethylenediamine, adiponitrile and high boilers, b) distillatively removing hexamethylenediamine from the mixture comprising 6-aminocapronitrile, hexamethylenediamine, adiponitrile and high boilers, and either c1) distillatively removing 6-aminocapronitrile, and then d1) distillatively removing adiponitrile, or c2) simultaneously distillatively removing 6-aminocapronitrile and adiponitrile into separate fractions is characterized by base of column temperatures below 185° C. in steps d1) or c2).
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Luyken, Frank Ohlbach, Andreas Ansmann, Peter Bassler, Rolf Fischer, Johann-Peter Melder, Martin Merger, Alwin Rehfinger, Guido Voit, Günther Achhammer
  • Process and catalyst for preparing C2-oxygenates from synthesis gas
    Patent number: 6346555
    Abstract: In a process for preparing C2-oxygenates by reaction of CO and H2 over a rhodium-containing supported catalyst, the catalyst comprises, based on the total weight, from 0.01 to 10% by weight of rhodium, from 0.001 to 10% by weight of zirconium, from 0.01 to 5% by weight of iridium, from 0.01 to 10% by weight of at least one metal selected from among copper, cobalt, nickel, manganese, iron, ruthenium and molybdenum, from 0.01 to 10% by weight of at least one alkali metal or alkaline earth metal selected from among lithium, sodium, potassium, rubidium, magnesium and calcium, on an inert support.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Hongyuan Luo, Huanwen Zhou
  • Alkylene oxide modified silicone glycol compatibilizing agents for stable polyester polyol compositions
    Patent number: 6346558
    Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an alkylene oxide modified silicone glycol compatibilizing agent having an HLB of from about 5 to about 8 is disclosed. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties. An alkylene oxide and isocyanate modified silicone glycol compatibilizing agent is also disclosed.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: February 12, 2002
    Assignee: BASF Corporation
    Inventors: David D. Peters, Robert E. Riley, Jimmy L. Patterson, Anthony G. Schaefer
  • Process for the recovery and recycle of D-tartaric acid
    Patent number: 6346649
    Abstract: There is provided a process for the recovery of essentially enantiomerically pure D-tartaric acid from aqueous and organic waste streams generated in the resolution of racemic 2-amino-2,3-dimethylbutyronitrile via the formation and isolation of a crystalline monobasic tartrate salt. The recovered optically pure D-tartaric acid may be efficiently recycled to provide a sustainable resolution of racemic 2-amino-2,3-dimethylbutyronitrile.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventor: Kenneth Alfred Martin Kremer
  • Fungicide mixtures based on amide compounds and pyridine derivatives
    Patent number: 6346538
    Abstract: Fungicidal mixtures comprise as active components a) an amide compound of the formula I A—CO—NR1R2  I  in which A, R1 and R2 are as defined in the description, and b) compounds of the formula II, their N-oxide or one of their salts  where the substituents R12 to R18 are as defined in the description, and/or c) compounds of the formula III  where the substituents X1 to X5 and R19 to R22 are as defined in the description, in a synergistically effective amount.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schelberger, Maria Scherer, Karl Eicken, Manfred Hampel, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann
  • Method for producing butyrolactones
    Patent number: 6346629
    Abstract: Process for producing butyrolactones of the general formula I where R1 and R2 are each hydrogen, alkyl, hydroxyalkyl, substituted or unsubstituted aryl or substituted or unsubstituted trialkylsilyl, by reacting alkynes of the general formula II where R1 and R2 are each as defined above, with carbon monoxide and water in the presence of a rhodium catalyst under pressures from 20 to 300 bar and hydrogenating the unhydrogenated 2(5H)-furanone intermediates comprises a) reacting the carbonylation reaction mixture with hydrogen at from 150 to 250° C. and from 100 to 300 bar, b) removing the precipitated catalyst and returning it into the carbonylation reaction, and c) subjecting the catalyst-free reaction mixture to a distillation to recover the butyrolactone.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: February 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Melanie Brunner, Ralf-Thomas Rahn, Udo Rheude, Jochem Henkelmann
  • Multicomponent superabsorbent fibers
    Publication number: 20020015846
    Abstract: Multicomponent superabsorbent fibers are disclosed. The multicomponent fibers comprise at least one acidic water-absorbing resin and at least one basic water-absorbing resin. Each fiber contains at least one microdomain of the acidic resin in contact with, or in close proximity to, at least one microdomain of the basic resin. Blends of multicomponent superabsorbent fibers with particles of a second water-absorbing resin also are disclosed. Articles containing the multicomponent superabsorbent fibers also are disclosed.
    Type: Application
    Filed: May 17, 2001
    Publication date: February 7, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Samantha J. Evans, John A. Henderson, Michael A. Mitchell, Anthony S. Tomlin
  • Polymerization catalyst
    Publication number: 20020016256
    Abstract: An organometallic compound of the formula I 1
    Type: Application
    Filed: April 6, 2001
    Publication date: February 7, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Marc Oliver Kristen, Benno Bildstein, Michael Malaun, Ulrich Siemeling, Oliver Kuhnert
  • Process for the preparation of 2,2-dimethyl-5-(4-chlorobenzyl) cyclopentanone and an intermediate useful therefore
    Patent number: 6344580
    Abstract: There is provided a process for the prepartion of 2,2-dimethyl-5-(4-chlorobenzyl)cyclopentanone. a key intermediate in the production of the antifungal agent metconazole.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: February 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventor: George S. K. Wong
  • Method and intermediate products for producing bis(oxime)monoethers
    Patent number: 6344589
    Abstract: A process for preparing bis(oxime) monoethers of the formula I, where: R1 is unsbustituted C1-C4-alkyl or C2-C4-alkenyl-, C2-C4-alkynyl- or phenyl-substituted methyl; R2,R4 independently of one another are hydrogen or methyl; R3,R5 independently of one another are hydrogen or C1-C4-alkyl, trifluoromethyl or phenyl, and intermediates which are obtainable by this process are described.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: February 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wassilios Grammenos, Hubert Sauter, Andreas Gypser, Herbert Bayer, Norbert Götz, Roland Götz
  • Fungicide mixtures
    Patent number: 6344469
    Abstract: Fungicidal mixture comprises a) a carbamate of the formula I,  in which X is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl and C1-C4-haloalkyl, it being possible for the radicals R to be different if n is 2, or a salt or adduct thereof, and b) a 4,5-benzo-1-thia-2,3-diazole of the formula II  in which R′ is CN, CO2H, CO2—C1-C4-alkyl or CO—S—C1-C4-alkyl, or a salt or adduct thereof, in a synergistically effective amount.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: February 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schelberger, Reinhold Saur, Hubert Sauter, Bernd Müller, Erich Birner, Joachim Leyendecker, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann
  • Continuous preparation of cyclohexene by partial hydrogenation of benzene
    Patent number: 6344593
    Abstract: Cyclohexene is prepared by partial hydrogenation of benzene with hydrogen in the presence of water and ruthenium catalyst at elevated temperature and superatmospheric pressure by a continuous process in which benzene is introduced in gaseous form and the resulting cyclohexene is discharged in gaseous form and the catalyst is present in solution or suspension in a liquid, aqueous phase.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: February 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Johann Gaube, Frank Doebert
  • Method of producing cured coating films
    Patent number: 6344244
    Abstract: The present invention relates to a method of producing at cast one coating film on at least one area of a substrate surface, which comprises at least the following steps in the following order: a) initiating at least one crosslinking reaction in at least one reactive coating formulation; b) applying said at least one reactive coating formulation before the onset of said at least one crosslinking reaction on said at least one area of said substrate surface.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: February 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Schrof, Reinhold Schwalm, Erich Beck, Uwe Meisenburg