Patents Assigned to BASF
  • Manufacture of gamma-iron (III) oxide
    Patent number: 4018882
    Abstract: A process for the manufacture of acicular magnetic gamma-iron(III) oxide by reducing acicular alpha-iron(III) oxide to magnetite and then oxidizing it to gamma-iron(III) oxide, wherein the alpha-iron(III) oxide is treated with a water-soluble alkaline earth metal compound and an alkylphenol with one to three alkyl radicals, each of 4 to 24 carbon atoms, on the benzene nucleus. Gamma-iron(III) oxides manufactured in this way show better magnetic orientability in the binder-containing dispersion, and a higher coercive force than prior art magnetic pigments.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: April 19, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Koester, Gerd Wunsch, Eduard Schoenafinger, Hans Henning Schneehage, Helmut Jakusch
  • Magnetic recording tape
    Patent number: 4018967
    Abstract: Magnetic recording tape especially suitable for use as video tape and computer tape, comprising a base carrying a magnetic coating which consists essentially of a dispersion of a finely divided magnetic pigment and at least one lubricant in an organic binder. The lubricant is a compound of the formula ##STR1## IN WHICH N IS AN INTEGER OF FROM 3 TO 8 AND R.sup.1 and R.sup.2 are an alkoxy or aralkoxy radical or conjointly are an alkyldioxy radical of 3 to 18 carbon atoms. A magnetic recording tape prepared with a high proportion of such a lubricant is distinguished by high abrasion resistance coupled with a minimum transfer of material to the magnetic heads even under fluctuating climatic conditions.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: April 19, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Roller, Werner Senkpiel, Gerd Wunsch, Job-Werner Hartmann, Friedrich Fuchs, Joachim Hack, Volker Kiener, Herbert Motz, Werner Ostertag
  • Mono- and/or di-alkyl phosphates as additives for hydraulic binders
    Patent number: 4018618
    Abstract: Mono- or di-alkyl phosphate or their alkali metal salts or optionally substituted ammonium salts for use as antifoaming and hydrophobizing additives for hydraulic binders.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: April 19, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Petri, Harry Distler, Bertold Bechert
  • Manufacture of sodium dithionite
    Patent number: 4017593
    Abstract: For the preparation of anhydrous sodium dithionite by the reaction of sulfur dioxide with sodium formate and caustic soda in the presence of organic solvents, sulfur dioxide is passed, together with the formate, into a liquid containing all of the caustic soda required for the reaction. This initial liquid may contain, in addition to the caustic soda, a portion of the sulfur dioxide or formate required for the reaction.
    Type: Grant
    Filed: August 12, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Erfried Voelkl, Siegfried Schreiner, Gerd Wunsch, Volker Kiener, Rudi Waibel, Hartwig Koester
  • Apparatus for the production of exposed printing plates
    Patent number: 4017183
    Abstract: A process and apparatus for the production of exposed printing plates consisting of a resin layer and a support, said resin layer being prepared from a fluid photopolymerizable material which is introduced into a mold having at least one transparent wall which is covered with an image-bearing transparency, and being exposed through said image-bearing transparency, which causes photopolymerization of the exposed areas of the resin layer and bonds these areas to the support which is provided with an adhesive layer.
    Type: Grant
    Filed: February 19, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Lenz, Josef Woellhaf, Klaus Spreng, Manfred Zuerger, Paul Hecke, Gerhard Hoffmann, Milan Obradovic
  • Method of washing glassware and inhibited cleaning solution and additive composition useful therein
    Patent number: 4017410
    Abstract: Soiled hot end coated glassware having a substantially colorless and transparent thin protective coating thereon including an organic coating material is washed in an inhibited aqueous caustic soda cleaning solution to inhibit the deleterious effects of repeated washings and thereby increase the effective life of the protective coating. The cleaning solution comprises on a weight basis from 0.3 to 6% of caustic soda, from 0.01% to 0.3% of at least one soluble zinc containing compound when calculated as zinc oxide, and the remainder water. Other ingredients which may be present include from 0.002 to 0.05% of a synthetic organic phosphate ester anionic surfactant having hydrotrophic properties, from 0.001 to 0.03% of a low foaming synthetic alkoxylated nonionic surfactant, and from 0.008 to 0.2% of a hard water conditioning sequesterant.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Wyandotte Corporation
    Inventors: Malachi E. Sorgenfrei, Otto T. Aepli
  • Catalyst for the manufacture of triethylenediamine
    Patent number: 4017494
    Abstract: A gas phase process for the production of triethylenediamine or 1,4-diaza-bicyclo-(2,2,2)-octane from N,N'-dihydroxyethylpiperazine, wherein aluminum oxide is used as a catalyst.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Guenter Bosche, Karl Baer, Kurt Schneider
  • Thermoplastic molding compositions of high impact resistance
    Patent number: 4017558
    Abstract: Impact-resistant thermoplastic molding compositions containing from 70 to 98 percent by weight of a polyoxymethylene and from 30 to 2 percent by weight of a block copolymer of the general formula A -- B -- A, wherein A is a polyalkylene oxide block and B is a diene polymer block.
    Type: Grant
    Filed: February 13, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Schmidt, Gerhard Fahrbach, Wolfgang Schenk, Erhard Seiler
  • Manufacture of acicular ferromagnetic metal pigments containing iron
    Patent number: 4017303
    Abstract: A process for the manufacture of acicular ferromagnetic metal pigments containing iron, having a reduced field strength distribution and a steeper residual magnetization curve, by applying an alkaline earth metal cation and an organic compound having at least one group capable of forming a chelate to appropriate acicular iron oxides and then reducing the treated oxides.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Koester, Gerd Wunsch, Paul Deigner, Werner Stumpfi, Hans Henning Schneehage
  • Manufacture of 1,4-butanediol
    Patent number: 4017550
    Abstract: The manufacture of 1,4-butanediol by hydroformylation of cyclic acetals of acrolein in the presence of phosphine-modified cobalt carbonyl complexes or rhodium carbonyl complexes and hydrogenation of the 3-formylpropionaldehyde-acetals which are the principal products first formed.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventor: Rudolf Kummer
  • Method of purifying caprolactam
    Patent number: 4017482
    Abstract: A method of simultaneously purifying crude caprolactams obtained from the Beckmann rearrangement of cyclohexanone oxime in oleum and the gas-phase rearrangement of cyclohexanone oxime in the presence of catalysts. The improvement consists in that the crude caprolactam obtained from the catalytic gas-phase rearrangement is added to the acid rearrangement mixture derived from the Beckmann rearrangement in oleum and the mixture is maintained at temperatures of from 100.degree. to 200.degree. C with thorough mixing, whereupon it is neutralized and worked up. Advantageously, the content of lactam in the catalytic gas-phase rearrangement is from 5 to 30% of the content of lactam in the acid rearrangement mixture obtained from the Beckmann rearrangement.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: April 12, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolph Hans Gath, Hugo Fuchs
  • Azo dye with a 2,6-diamino-5-cyano-or-5-carbamoyl-pyridine coupling component
    Patent number: 4016152
    Abstract: A dye of the formula ##STR1## wherein D is the radical of a diazo component, especially phenyl, phenylazophenyl, benzthiazolyl, benzisothiazolyl, thienyl, thiazolyl, thiadiazolyl and substituted derivatives thereof,R is hydrogen or alkyl of 1 to 7 carbon atoms,X is cyano or carbamoyl,A is a hydrocarbon radical, the twoA's together with the nitrogen form a saturated heterocyclic ring, andA.sup.1 is hydrogen or a hydrocarbon radical.The dyes are eminently suitable for coloring synthetic fibers, particularly polyesters, brilliant shades.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: April 5, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm
  • Production of amines from alcohols
    Patent number: 4014933
    Abstract: An improved method of preparing amines by reaction of alcohols with ammonia or primary or secondary amines at elevated temperature and superatmospheric pressure in the presence of hydrogen and a hydrogenation catalyst containing cobalt, nickel and copper, the improvement comprising using a catalyst which contains (calculated on the metal content of the catalyst) from 70 to 95% by weight of a mixture of cobalt and nickel and from 5 to 30% by weight of copper, the ratio by weight of cobalt to nickel being from 4:1 to 1:4. The amines prepared in this way are suitable for the production of emulsifying agents, plant protection agents and vulcanization accelerators.
    Type: Grant
    Filed: August 27, 1973
    Date of Patent: March 29, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenther Boettger, Hubert Corr, Herwig Hoffmann, Herbert Toussaint, Siegfried Winderl
  • Texturizing of filaments
    Patent number: 4014084
    Abstract: Filaments or filament bundles, which are conveyed by a heated gas, are crimped by treating them in a preheat chamber and crimping them in an elongate chamber from which the heated gas medium issues through longitudinal slits. A stream of cold gas is made to impinge on the outside of the lower one-third of the elongate chamber without allowing significant amounts of this cold gas to enter the said chamber. The resulting filaments or filament bundles have very good dyeing characteristics.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: March 29, 1977
    Assignee: BASF Farben & Fasern Aktiengesellschaft
    Inventors: Wolfgang Bauer, Wolfgang Martin, Erwin Lehrer
  • Substituted dihydro benzofuranyl esters
    Patent number: 4014904
    Abstract: New and valuable 4-benzofuranyl esters having a good herbicidal action, herbicides containing these compounds as active ingredients, a process for controlling the growth of unwanted plants with these compounds, and a process for their manufacture.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: March 29, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Fischer, deceased, Wolfgang Rohr, Christian Reitel
  • Barium laked phenylazonaphthalene dye containing sulfonic acid groups
    Patent number: 4014866
    Abstract: Azo dyes containing sulfonic acid groups laked with barium and derived from an anilinesulfonic acid as diazo component and a .beta.-naphtholsulfonic acid as coupling component for example a dye of the formula ##STR1## The dyes are eminently suitable as pigments for coloring surface coating compositions, printing inks and particlarly resins.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: March 29, 1977
    Assignee: BASF Aktiengesellschaft
    Inventor: Georg Henning
  • Production of .beta.-haloalkylaminosulfonyl halides
    Patent number: 4014931
    Abstract: The production of .beta.-haloalkylaminosulfonyl halides by the reaction of an aziridine with a sulfuryl halide, and the new .beta.-haloalkylaminosulfonyl halides. The new compounds which can be prepared by the process of the invention are valuable starting materials for the manufacture of plant protection agents, dyes and pharmaceutical substances.
    Type: Grant
    Filed: February 13, 1975
    Date of Patent: March 29, 1977
    Assignee: BASF Aktiengesellschaft
    Inventor: Gerhard Hamprecht
  • Low-viscous, stable polymer dispersions and polyurethanes prepared therefrom
    Patent number: 4014846
    Abstract: Low-viscous, stable polymer dispersions are prepared by blending a hydroxy-containing finely divided solid polymer with a polyol having an equivalent weight between 500 and 10,000. The resulting dispersions are particularly useful in the preparation of polyurethanes having enhanced physical properties particularly load bearing or hardness, tensile strength and tear resistance.
    Type: Grant
    Filed: April 29, 1974
    Date of Patent: March 29, 1977
    Assignee: BASF Wyandotte Corporation
    Inventors: Gerhard G. Ramlow, Louis C. Pizzini, John T. Patton, Jr., John R. Murphy
  • Self-extinguishing reinforced polycarbonate molding compositions
    Patent number: 4014849
    Abstract: Self-extinguishing reinforced molding compositions based on aromatic polycarbonates and containing from 0.5 to 15% by weight, based on the weight of polycarbonate, of red phosphorus and a reinforcing agent such as glass fibers or glass spheres or a filler such as asbestos. The molding compositions are suitable for processing to shaped articles.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: March 29, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Horn, Cai VON Rumohr
  • Substituted fluorophosphazenes
    Patent number: 4013740
    Abstract: New and valuable substituted fluorophosphazenes, pesticides containing these compounds, and a process for controlling pests with these compounds.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: March 22, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich Adolphi, Gerd Wunsch, Volker Kiener