Patents Assigned to BASF
  • Gas mixtures for thermal insulation
    Patent number: 5965231
    Abstract: The present invention relates to thermal insulation gas mixtures comprising cyclopentane and argon for filling cavities.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: October 12, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Rotermund, Anne-Kathrin Merten, Norbert Krollmann
  • Catalyst and a method for its production and use of same
    Patent number: 5965099
    Abstract: A catalyst and a method for producing the catalyst, for catalytic reduction of NO.sub.x and oxidation of hydrocarbons, the catalyst comprises a zinc, copper and aluminum spinel to which, at least one element selected from palladium, platinum, rhodium, ruthenium, osmium, iridium, rhenium and/or rare earth metals, such as lanthanum and cerium, vanadium, titanium, niobium, molybdenum, tungsten and/or salts thereof and/or oxides thereof has been added.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: October 12, 1999
    Assignees: Daimler-Benz Aktiengesellschaft, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach
  • Preparation of active peptides
    Patent number: 5965700
    Abstract: A process for preparing pentapeptides of the formula I ##STR1## where A and R.sup.1 -R.sup.3 have the stated meanings, comprises assembling the pentapeptide stepwise starting from a prolinamide of the formula II ##STR2## where R.sup.1 and R.sup.2 have the abovementioned meanings, and eliminating the group --NR.sup.1 R.sup.2 by hydrolysis where appropriate the peptide obtained in this way.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: October 12, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Wilhelm Amberg, Harald Bernard, Ernst Buschmann, Andreas Haupt, Bernd Janssen, Ulrich Karl, Andreas Kling, Stefan Muller, Kurt Ritter, Thomas Zierke
  • Purification of .alpha.-, .beta.- or .gamma.-substituted carboxylic acids
    Patent number: 5965032
    Abstract: The process for purifying an .alpha.-, .beta.- or .gamma.-substituted carboxylic acid or a salt or an ester thereof or a mixture of two or more thereof from an aqueous solution which contains an .alpha.-, .beta.- or .gamma.-substituted carboxylic acid or a salt or an ester thereof or a mixture of two or more thereof and at least one polyol or at least one amino alcohol, wherein the solution is treated by electrodialysis.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: October 12, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Frede, Christian Dully, Klaus Ditrich, Johann-Peter Melder, Hans-Jurgen Weyer, Achim Weitze
  • Use of polymers as assistants in the drying of aqueous polymer dispersions
    Patent number: 5962554
    Abstract: Polymers composed of at least >80% by weight of monomers of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl,R.sup.4 is C.sub.1 -C.sub.5 -alkyl andX is 0 or NH,are used as assistants in the drying of aqueous polymer dispersions and, in the case of a weight average relative molecular weight of from 5000 to 35,000, additionally as protective colloid for the preparation of aqueous polymer dispersions by the free radical aqueous emulsion polymerization method.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Pakusch, Bernhard Schuler, Walter Machtle, Roland Baumstark
  • Chromanylascorbic acid derivatives their preparation and use
    Patent number: 5962701
    Abstract: Chromanylascorbic acid derivatives of the general formula I ##STR1## where R.sup.1 is an organic radical having 1 to 12 C atoms, in particular a methyl group,R.sup.2 is an organic radical having 8 to 30 C atoms, which is unsubstituted or substituted by functional groups, in particular the phytyl 30 radical, andR.sup.3 is the --PO.sub.3 H.sub.2 -- radical or a glycosidyl radical,R.sup.3, R.sup.4 and R.sup.5 are hydrogen, or an alkyl or acyl group having 1 to 20 C atoms, in particular hydrogen, andR.sup.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Rosenau, Wolf-Dieter Habicher, Harald Streicher
  • Process for preparing low molecular weight, highly reactive polyisobutylene
    Patent number: 5962604
    Abstract: Low molecular weight, highly reactive polyisobutene having an average molecular weight M.sub.n of from 500 to 20000 Dalton and containing over 80 mol % of terminal double bonds is prepared by the polymerization of isobutene or an isobutene-containing hydrocarbon stream in the liquid phase and with the aid of a boron trifluoride complex catalyst at from -40 to 0.degree. C. and at from 1 to 20 bar, by a process in which the polymerization reaction is carried out in at least two polymerization stages, the added isobutene being polymerized to a partial conversion of up to 95% in the first polymerization stage and the polymerization of the remaining isobutene being continued in one or more subsequent polymerization stages, without or after prior isolation of the polyisobutene formed in the first polymerization stage.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventor: Hans Peter Rath
  • Methods for purging process lines of additives for thermoplastic materials
    Patent number: 5961734
    Abstract: Methods are provided whereby additive for thermoplastic materials may be recovered in a primary additive supply system simultaneously with the supply of an additive from a secondary additive supply system to a molten thermoplastic stream. Each of the primary and secondary additive supply systems is provided with respective recirculation lines so as to prevent sedimentation of the additive. According to the present invention, therefore, a protocol is employed whereby substantially all of the additive in the additive supply system, including that quantity of additive in the recirculation lines, may be recovered so that a fresh supply of additive (which oftentimes is different from the previous additive) may be connected for injection into the molten thermoplastic stream at the appropriate time.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Corporation
    Inventors: Daniel H. Kight, Carl R. Holzer, Jr., Dan R. Yon
  • Polyformamides and polyamines
    Patent number: 5962596
    Abstract: A process for obtaining polymers containing N-substituted formamide structural units, in which nitrile-containing polymers are reacted in the presence of 1) hydrogen, and 2) carbon monoxide and/or carbon monoxide-releasing compounds.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Ebel, Hans-Joachim Hahnle
  • Heteroaromatic compounds and crop protection agents containing them
    Patent number: 5962489
    Abstract: Heteroaromatic compounds of the formulae IA and IB ##STR1## where the dashed line is a double bond between the carbon atom and a Z atom, and the index and the substituents have the following meanings:R.sup.1alkyl, alkoxy, alkylaminoR.sup.2alkyl;Aa direct bond; alkylene, alkenylene, alkynylene;O, S, S-oxides, N and alkylene derivatives or oxime radicals thereofBhydrogen, halogen,alkyl, alkenyl, alkynyl;cycloalkyl, cycloalkenyl, cycloalkynyl, heterocyclyl, aryl, hetarylUCH.sub.2, CHCl, CHR.sup.2 or NOR.sup.2 ;Xhydrogen, cyano, nitro, halogen,alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl, hetaryl; oxi- and thio derivatives thereof, carbonyl derivatives thereof, carbonyloxy derivatives thereof, amino derivatives thereof, oxime derivatives thereof,amino which may bear one or two of the abovementioned groups;m1 or 2,Yoxygen or sulfur;Z.sup.1 -Z.sup.2, Z.sub.3 -Z.sub.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Mueller, Hubert Sauter, Horst Wingert, Hartmann Koenig, Franz Roehl, Eberhard Ammermann, Gisela Lorenz
  • Water soluble crosslinked copolymers, their preparation and their use
    Patent number: 5962613
    Abstract: Water-soluble copolymers which are obtainable by free-radical solution polymerization ofa) 10-99.5% by weight of at least one vinylimidazole of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are H, C.sub.1 -C.sub.4 -alkyl, monomers of the formula ##STR2## where R.sup.4 and R.sup.5 are identical or different and are H, C.sub.1 -C.sub.4 -alkyl or together form a ring of 3 to 5 methylene groups,N-vinyloxazolidone, N-vinyltriazole, 4-vinylpyridine N-oxide or mixtures of said monomers,b) 0-89.5% by weight of other copolymerizable monoethylenically unsaturated monomers andc) 0.5-30% by weight of at least one monomer which acts as crosslinker and has at least two non-conjugated ethylenic double bondsin water and/or polar organic solvents in the presence of polymerization regulators, using from 0.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Jurgen Detering, Stefan Stein, Dieter Boeckh, Hans-Ulrich Jager
  • Substituted 1-methyl-3-phenylpyrazoles and the use thereof as herbicides and for the desiccation or defoliation of plants
    Patent number: 5962694
    Abstract: Substituted 1-methyl-3-phenylpyrazoles I and their agriculturally useful acid addition salts ##STR1## where R.sup.1 =C.sub.1 -C.sub.4 -haloalkoxy or C.sub.1-C.sub.4 -haloalkylthio;R.sup.2 =halogen; R.sup.3 =F or Cl;R.sup.4 =CN, C.sub.1 -C.sub.4 -fluoroalkyl, C.sub.2 -C.sub.4 -fluoroalkenyl or --C(R.sup.5)(X-R.sup.6)(Y-R.sup.7);R.sup.5 =H or C.sub.1 -C.sub.4 -alkyl; X and Y=--O-- or --S--;R.sup.6, R.sup.7 =C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.3 -C.sub.4 -alkenyl, C.sub.3 -C.sub.4 -haloalkenyl or C.sub.3 -C.sub.4 -alkynyl;are used as herbicides; for the desiccation/defoliation of plants.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Cyrill Zagar, Albrecht Harreus, Christoph-Sweder von dem Bussche-Hunnefeld, Gerhard Hamprecht, Elisabeth Heistracher, Peter Schafer, Olaf Menke, Karl-Otto Westphalen, Ulf Misslitz, Helmut Walter
  • Butyrolactone-preparation process
    Patent number: 5962700
    Abstract: A process for the preparation of butyrolactones of the formula I ##STR1## where the substituents R.sup.1 and R.sup.2 are hydrogen, alkyl or hydroxyalkyl groups, or aryl and trialkylsilyl groups, if appropriate carrying inert: substituents, is described in which an alkyne of the formula IIR.sup.1 --C.tbd.C--R.sup.2 IIwhere the substituents have the meanings indicated above, is reacted under reducing conditions at elevated pressure and elevated temperature with carbon monoxide CO and hydrogen in the presence of a transition metal catalyst or with carbon monoxide and water in the presence of a transition metal catalyst.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Marc Heider, Thomas Ruhl, Jochem Henkelmann, Susanne Stutz, Thomas Preiss, Heinz Rutter, Martin Schafer, Arthur Hohn
  • Water-soluble or water-dispersible polyaspartic acid derivatives their preparation and their use
    Patent number: 5961965
    Abstract: A description is given of water-soluble or water-dispersible polyaspartic acid derivatives, their preparation and their use in cosmetology, especially in hair cosmetology.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Son Nguyen Kim, Axel Sanner, Peter Hossel, Matthias Kroner
  • Methine and azamethine dyes based on trifluoromethylpyridones
    Patent number: 5962691
    Abstract: Pyridone dyes of the formula I ##STR1## where X is nitrogen or CH,R.sup.1 is a 5-membered or 6-membered carbocyclic or heterocyclic radical,R.sup.2 is cyano, carbamoyl, C.sub.1 -C.sub.6 -alkoxycarbonyl or C.sub.1 -C.sub.4 -alkanoyl andR.sup.3 is unsubstituted or substituted C.sub.1 -C.sub.13 -alkyl, unsubstituted or substituted phenyl or unsubstituted or substituted amino,a method for their thermal transfer and a method for coloring or printing synthetic materials by means of the novel dyes.The invention concerns pyridone dyes of the formula (I) in which X is nitrogen or CH, R.sup.1 is a five-membered or six-membered carbocyclic or heterocyclic group, R.sup.2 is cyano, carbamoyl, C.sub.1 -C.sub.6 alkoxycarboyl or C.sub.1 -C.sub.4 alkanoyl and R.sup.3 is optionally substituted C.sub.1 -C.sub.13 alkyl, optionally substituted phenyl or optionally substituted amino.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Johann Schmidt, Rudiger Sens, Karl-Heinz Etzbach
  • Separation of (meth) acrylic acid by rectification
    Patent number: 5961790
    Abstract: A process for the separation by rectification of (meth)acrylic acid from a mixture containing (meth)acrylic acid and an inert hydrophobic organic liquid having a boiling point higher than that of (meth)acrylic acid as main constituents and also lower aldehydes as secondary constituents, a primary amine and/or a salt thereof are added.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Herbst, Gerhard Nestler, Jerry Darlington, Ulrich Hammon
  • Cathodic electrocoat composition having latent functionality
    Patent number: 5961802
    Abstract: A cationic resin having latent primary amine functionality is described. The latent amine functionality is obtained by reacting a cyclic anhydride with an amine compound having two primary amine groups and one secondary amine group. The cationic resin is combined with a curing agent having a plurality of cyclic carbonate groups in an electrocoat bath.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Corporation
    Inventors: Timothy S. December, Paul J Harris
  • Recovery of caprolactam monomer and oligomer from aqueous polycaprolactam extracts
    Patent number: 5962681
    Abstract: The disclosure is a process for recovering caprolactam monomer and oligomer from aqueous polycaprolactam extracts by removing the inorganic contaminants present therein.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Egly, Hans-Harald Hunger, Thomas Sauer
  • Aromatic sulphonyl compounds having an additional thioether, sulphoxide or sulphonyl group
    Patent number: 5962730
    Abstract: Sulfonyl compounds have the formula ##STR1## where n is 0, 1 or 2,Y is vinyl or a radical of the formula C.sub.2 H.sub.4 Q, where Q is hydroxyl or an alkali-detachable group,E is C.sub.3 -C.sub.6 -alkylene with or without interruption by 1 or 2 oxygen atoms in ether function,Ar is the radical of benzene or naphthalene, andR.sup.1, R.sup.2 and R.sup.3 are each hydrogen, unsubstituted or substituted C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, hydroxyl, halogen, nitro, amino, hydroxysulfonyl, carboxyl, carbamoyl, sulfamoyl, cyano or a radical of the formula (NH--).sub.m (CH.sub.2 --).sub.q SO.sub.2 --Y, where m is 0 or 1, q is 0, 2 or 3, and Y is as defined above.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Claus Marschner, Manfred Patsch
  • Bismuth vanadate pigments
    Patent number: 5958126
    Abstract: Bismuth vanadate pigments of the formula (Bi.sub.4 V.sub.2 O.sub.11).sub.1-x.(BiVO.sub.4).sub.x, where 0.ltoreq.x<0.9, further comprising from 0 to 0.5% by weight of phosphorus in the form of bismuth phosphate, are characterized by a CIELAB hue angle of from 64 to 91.degree., a chroma of from 72 to 95 and a lightness.gtoreq.62 (measuring angle 45.degree., standard illuminant D65).
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: September 28, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Jorg Adel, Boubacar Camara, Norbert Mronga