Patents Assigned to BASF
  • Use of redispersible polymer powders or polymer granules as binders for producing solid pharmaceutical presentations
    Patent number: 6066334
    Abstract: Redispersible polymer powders or polymer granules consisting ofa) 10-95% by weight of polyvinyl acetate,b) 5-90% by weight of an N-vinylpyrrolidone-containing polymer,c) 0-20% by weight of another water-soluble or water-swellable substance andd) 0-20% by weight of a water-insoluble dusting agent with or withoute) other additives,are used as binders for producing solid pharmaceutical presentations, where the binder content in the presentation is from 0.5 to 20% by weight.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: May 23, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Kolter, Kristin Tiefensee, Katrin Zeitz
  • Method for isolating 3-[2-chloro-4-(trifluoromethyl)-phenoxy]-benzoic acid
    Patent number: 6066761
    Abstract: A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I ##STR1## from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid;b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; andc) separating the organic phase from the aqueous phase.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: May 23, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Rupert Merkle, Ronald R. Eva, Dirk Franke, Simon A. Jones, Wolfgang Mattmann, Manfred Munzinger
  • Method and vaporizer for vaporizing oxidation-sensitive compounds
    Patent number: 6066232
    Abstract: The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact between the resulting vapor phase and the heated solid surface is substantially avoided. It also directed to an evaporator composed of a heatable solid surface (16), an apparatus (2, 3) for heating the solid surface and an apparatus (10) for feeding a liquid containing vaporizable compounds to the heatable solid surface, wherein the apparatus for feeding the liquid is designed and arranged in the evaporator in such a way (12, 14, 18) that direct contact between a resulting vapor phase and the heatable solid surface is substantially avoided.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: May 23, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Mohr, Frans Vansant, Axel Werner Polt, Stephan Scholl, Siegfried Kruger, Hartmut Staatz
  • Radiation curing of dihydrofuran derivatives
    Patent number: 6066746
    Abstract: Process for producing coatings or moldings by radiation curing, which involves using high-energy light to irradiate radiation-curable compositions containing 1-100% by weight, based on the total amount of free-radically or cationically polymerizable compounds, of compounds A) containing at least one cationically polymerizable 2,3-dihydrofuran group.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: May 23, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Reich, Reinhold Schwalm, Erich Beck, Lukas Haussling, Oskar Nuyken, Roman-Benedikt Raether
  • Preparation of esters of low residual acid content from .alpha., .beta.-ethylenically unsaturated carboxylic acids and hydroxyl-containing polymers
    Patent number: 6063957
    Abstract: A process for preparing esters E of low residual acid content from .alpha.,.beta.-monoethylenically unsaturated C.sub.3 -C.sub.6 mono- and dicarboxylic acids S and hydroxyl-containing polycondensates P, wherea) the acid S and the polycondensate P or the monomeric and/or oligomeric and/or polymeric components which form the polycondensate P, are reacted in the presence or absence of a solvent and/or of an esterification catalyst and/or of further additives, with removal of the water which forms, andb) the unreacted acid S is removed by distillation,comprises adding water for the distillative removal of the acid S in step b).
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Koniger, Wolfgang Reich, Erich Beck, Helmut Gruner
  • 1,7-disubstituted perylene-3,4,9, 10-tetracarboxylic acids, their dianhydrides and diimides of said acids
    Patent number: 6063181
    Abstract: 1,7-Disubstituted perylene-3,4,9,10-tetracarboxylic dianhydrides I and perylere-3,4,9,10-tetracarboxylic acids Ia ##STR1## where L.sup.1, L.sup.2 independently of one another are 1,2-ethylene, 1,2-ethenylene and 1,2-ethynylene, andR.sup.1, R.sup.2 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.30 -alkyl,their preparation and use as pigments, laser dyes and precursors for preparing fluorescent dyes, polymeric colorants, pigments and pigment additives, and also 1,7-disubstituted perylene-3,4,9,10-tetracarboxylic diimides (VI) as their intermediates.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Arno Bohm, Harald Arms, Georg Henning, Peter Blaschka
  • Microcellular urea-containing polyurethane elastomer
    Patent number: 6063824
    Abstract: A microcellular PU elastomer having improved dynamic-mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and also further customary constituents has, after heating at from 100 to 120.degree. C. for from 8 to 24 hours, a melting range of from 130.degree. C. as the minimum lower limit to 230.degree. C. as a minimum upper limit, measured by differential scanning calorimetry (DSC) at a heating rate of 20.degree. C./min, and a urea content of from 14 to 18% by weight.A process is also provided for preparing such a microcellular PU elastomer having improved dynamic mechanical properties. The microcellular PU elastomers can be used for producing damping elements.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruediger Krech, Udo Rotermund, Heinz Bollmann, Renate Hempel, Wolfgang Scholz, Manfred Genz
  • Sterile nonwovens bonded using polyurethane dispersions
    Patent number: 6063498
    Abstract: A process for producing sterile nonwovens comprises a textile fabric composed of a fiber web being impregnated with an aqueous dispersion comprising a polyurethane, then dried and irradiated with .gamma.-rays.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrike Licht, Karl Haberle, Peter Claassen, Albrecht Seher, Karl-Heinz Schumacher, Hermann Seyffer
  • Solvent resistant refinish paint composition and method of applying same
    Patent number: 6063501
    Abstract: Air-dry refinish primer compositions containing microparticles have been found to exhibit superior air-dry properties as well as being resistant to solvent attack when a primer-surfacer or topcoat is applied after a short (30 minute or less) dry time of the primer composition.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: May 16, 2000
    Assignee: BASF Corporation
    Inventors: Douglas H. Larrow, Lawrence E. Thieben
  • Process for preparing cocondensates of aspartic acid amines
    Patent number: 6063961
    Abstract: A process for preparing cocondensates of aspartic acid and amines by heating aspartic acid and amines in the presence of acidic catalysts comprises supplying the feed region of the extruder with particulate aspartic acid and a downstream metering zone with at least one amine and at least one acidic catalyst, condensing the resulting mixture to such an extent by heating that the downstream end of the extruder discharges a precondensate which contains at least 20-95% by weight of the starting aspartic acid in condensed form, and then completing the condensation of the precondensate. The cocondensates are useful as incrustation inhibitors in detergents.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventor: Matthias Kroner
  • Housings for security devices
    Patent number: 6063868
    Abstract: The use of a thermoplastic molding composition differing from ABS and comprising, based on a total of 100% by weight of amounts of components A and B, and, if desired, C and/or D,a: as component A, from 1 to 99% by weight, preferably from 15 to 60% by weight, in particular from 25 to 50% by weight, of a particulate emulsion polymer with a glass transition temperature of below 0.degree. C. and with a median particle size of from 50 to 1000 nm, preferably from 50 to 500 nmb: as component B, from 1 to 99% by weight, preferably from 40 to 85% by weight, in particular from 50 to 75% by weight, of at least one amorphous or partly crystalline polymer,c: as component C, from 0 to 50% by weight of polycarbonates, andd: as component D, from 0 to 50% by weight of fibrous or particulate fillers or mixtures of thesefor producing housings for security equipment.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Graham Edmund McKee, Alfred Pirker, Hans-Josef Sterzel, Franz Brandstetter, Bernd-Steffen von Bernstorff, Bernhard Rosenau, Ulrich Endemann, Burkhard Straube
  • Preparation of a homogeneous polyol component which is stable to separation
    Patent number: 6063308
    Abstract: A process for preparing a homogeneous polyol component which is stable to separation and consists of at least one compound of relatively high molecular weight having at least two reactive hydrogen atoms and low-molecular-weight chain extenders and/or crosslinkers and, if desired, of blowing agents, catalysts and other auxiliaries and/or additives comprises the addition to this component of at least one amine and at least one organic and/or modified organic isocyanate; the invention also provides the corresponding polyol component which is stable to separation.The use of this polyol component for preparing PUR, in particular compact or foamed PUR, is also described.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Falke, Regina Hendreich, Ralf Fritz, Inge Rotermund
  • Preparation of phthalides
    Patent number: 6063256
    Abstract: A process is disclosed for preparing phthalides by cathodic reduction of phthalic acid or phthalic acid derivatives, in which the carboxylic acid units may be substituted by units which can be derived by a condensation reaction from carboxylic acid units and in which one or several hydrogen atoms of the o-phenylene unit of the phthalic acid may be substituted by inert radicals. This process is characterised in that the reduction is carried out in an organic solvent which contains less than 50 wt % water and in a non-divided electrolytic cell.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Putter, Heinz Hannebaum
  • Goniochromatic gloss pigments based on coated silicon dioxide platelets
    Patent number: 6063179
    Abstract: Goniochromatic luster pigments based on silicon dioxide platlets, CVD coated withA) a nonselectively absorbing filmlike layer at least partially transparent to visible light, andB) if desired an outer layer which consists essentially of colorless or selectively absorbing metal oxide and/or comprises phosphate, chromate and/or vanadate,are prepared and used for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Raimund Schmid, Norbert Mronga
  • Polycarbodiimide polymers and their use as adhesive intermediate layers in automotive coatings
    Patent number: 6063890
    Abstract: The invention is directed to a block copolymer with the following representative structure:R.sub.1 --X--[[R.sub.2 --N.dbd.C.dbd.N--R.sub.2 --].sub.n [--X--R.sub.3 --X].sub.p --[R.sub.2 --N.dbd.C.dbd.N--R.sub.2 ].sub.r ].sub.m X--R.sub.1Where:m=1 to 20n=1 to 20p=0 or 1R.sub.1 =A monomeric or polymeric species containing only one functional group reactive with an isocyanate group. This species may also have another reactive functional group that is not reactive with a carbodiimide functionality such as an alkoxy silane.R.sub.2 =The radical from any available aliphatic, cycloaliphatic or shielded aromatic diiocyanate.R.sub.3 =Preformed polymer blocks such as a polyester, polyacrylate, polyurethane, polyether, polyethylene, polycarbonate, polyurea polysiloxane or similar hybrids.X=any combination of: ##STR1## The copolymer may be used in various automotive paint compositions.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Corporation
    Inventor: Anthony J. Tye
  • Purification of crude acrylic acid by crystallization
    Patent number: 6063959
    Abstract: 1,4-Dibenzothiazine-comprising crude acrylic acid is purified by crystallization by raising its diacrylic acid content to at least 1% by weight prior to the crystallization step.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Lehnert, Klaus Joachim Muller-Engel, Gerhard Nestler, Bernd Eck
  • Substrates coated with two or more coats and process for producing these substrates
    Patent number: 6063230
    Abstract: The invention relates to substrates coated with two or more coats, which coated substrates are characterized in that they can be produced byA laminating a plastic film having a thickness of from 2 to 500 .mu.m onto the surface of the substrate,B coating the surface of the plastics film which is applied by lamination, if desired, with a filler composition which is suitable for the coating of automobile bodies,C coating the surface of the plastics film applied by lamination or, respectively, the filler coat obtained after carrying out step B with at least one pigmented coat of paint,D coating, if desired, the coat of paint obtained after carrying out step C with a transparent coating material, andE curing the coat or coats of paint applied to the surface of the plastics film which is applied by lamination.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: May 16, 2000
    Assignee: BASF Coatings AG
    Inventors: Egon Wegner, Leonidas Kiriazis
  • Moldings for sanitary and bathroom fittings
    Patent number: 6063854
    Abstract: The use of a thermoplastic molding composition differing from ABS and comprising, based on a total of 100% by weight of amounts of components A and B, and, if desired, C and/or D,a: as component A, from 1 to 99% by weight, preferably from 15 to 60% by weight, in particular from 25 to 50% by weight, of a particulate emulsion polymer with a glass transition temperature of below 0.degree. C. and with a median particle size of from 50 to 1000 nm, preferably from 50 to 500 nmb: as component B, from 1 to 99% by weight, preferably from 40 to 85% by weight, in particular from 50 to 75% by weight, of at least one amorphous or partly crystalline polymer,c: as component C, from 0 to 50% by weight of polycarbonates, andd: as component D, from 0 to 50% by weight of fibrous or particulate fillers or mixtures of thesefor producing moldings for sanitary and bathroom fittings.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Graham Edmund Mc Kee, Alfred Pirker, Hans-Josef Sterzel, Franz Brandstetter, Bernd-Steffen von Bernstorff, Bernhard Rosenau, Ulrich Endemann, Burkhard Straube
  • Cyanimino oxime ethers, process and intermediates for the preparation and use thereof for the control of noxious fungi and animal pests
    Patent number: 6063813
    Abstract: Cyanoiminooxime ethers of the formula I ##STR1## wherein X is NOCH.sub.3, CHOCH.sub.3 or CHCH.sub.3 ;Y is O or NZ where Z is hydrogen or alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl;R.sup.2 is cyano, nitro, halogen, alkyl, trifluoromethyl or alkoxy;m is 0, 1 or 2;R.sup.3 is hydrogen, cyano, alkyl, haloalkyl, alkoxy or cycloalkyl;R.sup.4 is hydrogen, orunsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl or hetaryl,or a salt thereof, their preparation, intermediates for their preparation, and their use for controlling harmful fungi and animal pests.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Bayer, Ruth Muller, Hubert Sauter, Wassilios Grammenos, Thomas Grote, Reinhard Kirstgen, Bernd Muller, Klaus Oberdorf, Franz Rohl, Eberhard Ammermann, Volker Harries, Gisela Lorenz, Siegfried Strathmann
  • Enzymatic acylation of amino acid esters using a carboxylic acid ester substituted with oxygen on the alpha carbon
    Patent number: 6063615
    Abstract: Disclosed is a process for preparing acylated amino esters and a process for preparing optically active amino esters from racemic amino esters with a carboxylic ester as acylating agent, whose acid component has a halogen, nitrogen, oxygen or sulfur atom neighboring the carbonyl carbon atom, in the presence of a hydrolase selected from the group of amidase, protease, esterase and lipase, and subsequent separation of the enantioselectively acylated amino ester from the non-acylated other enantiomer of the amino ester.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Sturmer, Klaus Ditrich, Wolfgang Siegel