Patents Assigned to BASF
  • Patent number: 5478494
    Abstract: A polyol composition is provided which when reacted with an organic isocyanate, has good flow characteristics and makes a rigid polyurethane foam having good dimensional stability at low densities. The polyol compostion has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and a viscosity of 5,000 cp or less at 25.degree. C. The polyol composition also has formic acid or a mixture of formic acid and water as blowing agents, and further contains a delayed action blow catalyst and a delayed action gel catalyst.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: December 26, 1995
    Assignee: BASF Corporation
    Inventors: Thomas B. Lee, Thomas L. Fishback, Curtis J. Reichel, Donald L. Christman
  • Patent number: 5478940
    Abstract: Benzimidazoles of the formula ##STR1## where n and q are each 1 or 2, the radicals R are each hydrogen, chlorine or methyl,L is a bridge member and An.sup..crclbar. is one equivalent of an anion, are used as charge stabilizers in electrostatic toners.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunter-Rudolf Schroeder, Udo Mayer, Karin H. Beck, Rainer Dyllick-Brenzinger
  • Patent number: 5478917
    Abstract: Solutions of polyimide-forming substances containA) aromatic or partly aromatic polyamines andB) amides or a mixture of esters and amides of tetracarboxylic acids.Solutions are useful as coating compositions.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: December 26, 1995
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Rainer Blum, Gerhard Hoffmann
  • Patent number: 5478798
    Abstract: N-[(1,3,5-Triazin-2-yl)-aminocarbonyl]-benzenesulfonamide of the general formula ##STR1## where R.sup.1 is methyl or ethyl, R.sup.2 is halogen, C.sub.1 -C.sub.3 -alkylsulfonyl, trifluoromethyl or 2-methoxyethoxy and R.sup.3 is hydrogen, methyl, ethyl, methoxy, ethoxy, fluorine or chlorine, and their agriculturally useful salts, processes for their preparation and their use.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Mayer, Gerhard Hamprecht, Karl-Otto Westphalen, Helmut Walter, Matthias Gerber, Klaus Grossmann, Wilhelm Rademacher
  • Patent number: 5478901
    Abstract: Olefin polymerisation uses catalysts based in pi-arene complexes of lanthanide metals in particular such catalysts supported on hydrophobic or hydroxylic surfaces particularly of alumina or silica halide surfaces particularly magnesium chloride. Such catalysts will polymerise ethylene and also propylene to give a largely isotactic polymer without using an electron donor to enhance stereo regularity. They also do not require co-catalysts to activate polymeriscation.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter J. V. Jones, John A. Segal, Robin Whyman
  • Patent number: 5478640
    Abstract: A thermally stable electrical insulating material comprises melamine resin fibers and a polymer fibril binder with or without a synthetic resin powder and mineral fillers.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Berbner, Gernot Herbst, Karl Ott, Hans D. Zettler
  • Patent number: 5478948
    Abstract: Benzimidazoles of the formula ##STR1## where n and q independently of one another are each 1 or 2, R.sup.1 is hydrogen, chlorine or methyl, R.sup.2 is hydrogen, unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl, halogen, nitro or C.sub.1 -C.sub.4 -alkanoyl, L is C.sub.2 -C.sub.6 -alkylene and An.sup.$ is one equivalent of an anion, are used as charge stabilizers in electrostatic toners.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunter-Rudolf Schroeder, Udo Mayer
  • Patent number: 5478656
    Abstract: Cationic urea/formaldehyde resins are obtainable by condensing urea and formaldehyde in a molar ratio of from 1:1.5 to 1:3 in the presence of polymers which contain not less than 1 mol % of polymerized vinylamine units and have Fikentscher K values of from 5 to 300, in an amount of from 5 to 50 g per mole of urea in the end product, where the mixture is first a) precondensed at a pH of from 8 to 14, then acidified and b) condensed at a pH of from 1 to 5 until gel formation begins, c) then from 0.3 to 1.5 moles of formaldehyde are added per mole of urea used, d) post-condensation is carried out and e) the resin solution is subsequently neutralized. The resins thus obtained are used in papermaking as assistants for increasing the dry and wet strength of paper and result in less dulling of the whiteness of the paper.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Flory, Andreas Stange, Michael Kroener, Norbert Sendhoff
  • Patent number: 5478883
    Abstract: An improved emulsion polymerization process utilizing at least one substantially water-insoluble ethylenically unsaturated monomer is provided for forming discrete solid polymeric particles suitable for use in coating and/or adhesive applications. During at least the initial portion of the polymerization a dissolved water-soluble polymerizable surfactant (as defined) formed by the reaction of a diallylamine, ethylene oxide, and propylene oxide and/or butylene oxide additionally is provided in the reaction zone in the continuous aqueous phase. The water-soluble polymerizable surfactant undergoes copolymerization and is substantially completely consumed during the course of the emulsion polymerization.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: December 26, 1995
    Assignee: BASF Corporation
    Inventors: Michael J. Anchor, Sridhar Gopalkrishnan
  • Patent number: 5476868
    Abstract: A fungicidal mixture containinga) the oxime ether carboxamide of the formula I ##STR1## and b) an azole derivative II selected from the group of compounds II.1 to II.161-[(2RS,4RS;2RS,4SR)-4-bromo-2-(2,4-dichlorophenyl)tetra-hydrofuryl]-1H-1,2 ,4-triazole (II.1)2-(4-chlorophenyl)-3-cyclopropyl-1-(1H-1,2,4-triazol-1-yl)butan-2-ol (II.2)(.+-.)-4-chloro-4-[4-methyl-2-(1H-1,2,4-triazol-1-yl-methyl)-1,3-dioxolan-2 -yl]phenyl 4-chlorophenyl ether (II.3)(E)-(R,S)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent -1-en-3-ol (II.4)(Z)-2-(1H-1,2,4-triazol-1-ylmethyl)-2-(4-fluorophenyl)-3-(2-chlorophenyl)ox irane (II.5)4-(4-chlorophenyl)-2-phenyl-2-(1H-1,2,4-triazolyl methyl)butyronitrile (II.6)3-(2,4-dichlorophenyl)-6-fluoro-2-(1H-1,2,4-triazol-1-yl)quinazolin-4(3H)-o ne (II.7)bis(4-fluorophenyl)(methyl)(1H-1,2,4-triazol-1-yl-methyl)silane (II.8)(R,S)-2-(2,4-dichlorophenyl)-1-(1H-1,2,4-triazol-l-yl)-hexan-2-ol (II.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: December 19, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Wingert, Hubert Sauter, Eberhard Ammermann, Gisela Lorenz, Reinhold Saur, Klaus Schelberger, Manfred Hampel
  • Patent number: 5476969
    Abstract: The invention relates to highly reactive polyoxyalkylene-polyols prepared by oxyalkylation of an initiator molecule containing, in bonded form, at least 2 reactive hydrogen atoms and at least one tertiary amino group bonded via a spacer bridge, which preferably comprises an alkylene radical having at least 3 carbon atoms, by means of at least one alkylene oxide, preferably ethylene oxide and/or 1,2-propylene oxide, to a process for the preparation of these polyoxyalkylene-polyols, and to their use for the production of compact or cellular, preferably flexible polyisocyanate polyaddition products.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: December 19, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Hinz, Stefan Adams, Ulrich Koehler, Christian Maletzko, Klaus Vorspohl, Ruth Zschiesche
  • Patent number: 5476681
    Abstract: The invention is a rigid polyurethane foam to which a base stock lubricating oil made of at least 55 weight percent paraffinic carbons and less than 10 weight percent aromatic carbons has been added as a hydrophobic agent protecting the polyurethane foam from reacting with environmental moisture. The foam is useful for deposit in railroad spike holes or any structural member having a cavity and where moisture within or on the cavity would otherwise react with the isocyanate to produce an uncontrollable foaming mass.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: December 19, 1995
    Assignee: BASF Corporation
    Inventors: Agus Sampara, Rob Hutchings, Tom Harris, Karl Dondoroff, Kerry Bowman
  • Patent number: 5476907
    Abstract: A polymer useful for preparing moldings and comprising essentially units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl, andR.sup.3 is hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, each of which may be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen, is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of (meth)acrylic acid with a primary amine of the general formula IIR.sup.3 NH.sub.2 IIin the presence of a compound selected from the group consisting of phosphinic acid and phosphonic acid and their alkali metal, alkaline earth metal, aluminum and ammonium salts, wherein the ammonium ion can be monosubstituted, disubstituted, trisubstituted or tetrasubstituted by C.sub.1 -C.sub.4 -alkyl and/or C.sub.5 -C.sub.8 -cycloalkyl, or mixtures thereof.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: December 19, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
  • Patent number: 5476628
    Abstract: Semi-finished GMT sheet material of GMT recyclate in which more than 50% by weight of the glass fibers are more than 2 mm in length and which is produced by extruding GMT recyclate particles without significant comminution of the glass fibers.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: December 19, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Baumgartl, Karl-Ludwig Brentrup, Jurgen Hofmann, Peter Ittemann, Rainer Nachtrab, Hilmar Ohlig, Alois Schlarb
  • Patent number: 5477406
    Abstract: A pressure device for recording media in tape form, in particular magnetic tapes, has at least one pressure element and comprises a support element. When the device is actuated by the head coming to bear, a deflection of the device takes place, and a pressing against the recording medium is effected automatically by at least one extension of the support element, this pressing ending automatically when the head is no longer in bearing contact. The bearing pressure may take place directly on the tape rear side or tape front side, or else indirectly on the tape front side or the tape rear side or both sides simultaneously. Pressing and/or antifriction and/or cleaning elements may also be arranged, at least partially, fixed in place with respect to the tape. The invention can be used in the case of all cassettes, film and magnetic-tape systems.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: December 19, 1995
    Assignee: BASF Magnetic GmbH
    Inventors: Norbert Schaeffer, Klaus Schoettle, Reinhard Stransky, Klaus Goetz
  • Patent number: 5476905
    Abstract: Propylene copolymers grafted with .alpha.,.beta.-ethylenically unsaturated carboxylic acids or derivatives and containing up to 35% by weight of other C.sub.2 - to C.sub.10 -alk-1-enes are obtainable by reacting the monomer to be grafted with a propylene copolymer at from 1 to 500 bar, where, in the absence of a free-radical initiator, from 0.01 to 1.0% by weight, based on the propylene copolymer, of the monomer to be grafted are admixed with the molten propylene copolymer, and the grafting reaction is carried out at from 210.degree. to 350.degree. C.The propylene copolymers according to the invention can be converted into crosslinked or crosslinkable propylene copolymers by admixing organic crosslinking agents.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: December 19, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Schwager, Thomas Muehlenbernd, Bernd L. Marczinke, Juergen Kerth, Hans-Joachim Mueller
  • Patent number: 5475158
    Abstract: A process for the preparation of cycloalkanols by the hydrolysis of cycloalkyl C.sub.1 -C.sub.4 fatty acid esters, which comprises the following steps:a) reaction of cycloalkyl C.sub.1 -C.sub.4 fatty acid esters with water at a temperature of from 30.degree. to 250.degree. in the liquid phase yielding a reaction mixture consisting of cycloalkyl C.sub.1 -C.sub.4 fatty acid esters, cycloalkanol, C.sub.1 -C.sub.4 fatty acids, and water.b) separation of the reaction mixture obtained in stage a) at a temperature of from 0.degree. to 200.degree. C. into a top phase consisting substantially of cycloalkanol and cycloalkyl C.sub.1 -C.sub.4 fatty acid esters and a bottom phase consisting substantially of water and C.sub.1 -C.sub.4 fatty acids.c) separation of cycloalkanol from the top phase obtained in stage b) by distillation and recycling unconverted cycloalkyl C.sub.1 -C.sub.4 fatty acid esters to stage a).
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: December 12, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Krug, Rolf Fischer, Rolf Pinkos
  • Patent number: 5474961
    Abstract: Metallocene catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alkenes are obtainable by deactivation of a preactivated metallocene catalyst system which contains, as active components, a metallocene complex of a metal of subgroup IV or V of the Periodic Table and an oligomeric alumoxane compound and, if required, subsequent reactivation.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: December 12, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Rueger Schlund, Meinolf Kersting, Klaus-Dieter Hungenberg
  • Patent number: 5475053
    Abstract: A molding composition based on an impact-modified thermoplastic A selected from ABS, ASA, impact-resistant polystyrene (HIPS) impact resistant polymethyl methacrylate, impact resistant PVC, polycarbonate, polyester carbonate, polyester, polyamide, polyphenylene ether, polyether ketone, polyether sulfone, polysulfone, polyoxyalkylene, polyarylene sulfide and also mixtures thereof containing a matting agent B composed of 30 to 80% by weight of an elastomeric grafting base B1 of 75 to 99.8% by weight of an alkyl acrylate having 1 to 8 carbon atoms in the alkyl radical (B11), 0.1 to 5% by weight of a polyfunctional, crosslinking monomer (B12) and 0.1 to 20% by weight of a monomer containing one or more acidic groups, or 49.9 to 99.9% by weight of one or more dienes (B111), up to 50% by weight of a further ethylenically unsaturated monomer (B112) and 0.1 to 20% by weight of a monomer containing one or more acidic groups (B113), and 20 to 70% by weight of a graft sheath B2 composed of 40 to 99.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: December 12, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Niessner, Friedrich Seitz, Wolfgang Fischer, Norbert Guentherberg, Karl Ruppmich, Rainer Moors, Robert Weiss
  • Patent number: D365344
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: December 19, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schoettle, Joachim Eberhard, Kurt Schmidts, Bozidar Pavelka