Patents Assigned to BASF
  • Substituted sulfamic acid halides
    Patent number: 4096181
    Abstract: New sulfamic acid halides and a process for the manufacture of sulfamic acid halides by reacting sulfamic acids with formaldehyde and acid halides. The products are starting materials for the manufacture of crop protection agents, dyes and pharmaceuticals.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: June 20, 1978
    Assignee: BASF Aktiengesellschaft
    Inventor: Gerhard Hamprecht
  • Rechargeable accumulator having a manganese dioxide electrode and an acid electrolyte
    Patent number: 4096318
    Abstract: An accumulator having an acid electrolyte and possessing two electrodes of the first kind mounted on base electrodes. The active material on the positive side contains manganese dioxide. The base electrode on the negative side consists of powdered graphite embedded in a binder which is resistant to the electrolyte. The base electrode on the positive side has a coarse porous structure and consists of graphite or titanium coated with titanium nitride or titanium carbide. The average pore diameters are from 0.1 to 2 mm and the pore volume is from 20 to 70%.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: June 20, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Wurmb, Fritz Beck, Gerd Wunsch, Klaus Boehlke, Wolfram Treptow
  • Supported catalysts containing vanadium pentoxide and titanium dioxide
    Patent number: 4096094
    Abstract: A supported catalyst for the oxidation of aromatic or unsaturated aliphatic hydrocarbons, comprising an inert nonporous carrier to which is applied a thin layer of a catalytic composition which contains from 1 to 39.9 percent by weight of vanadium pentoxide, from 60 to 98.9 percent by weight of titanium dioxide and from 0.1 to 10% by weight of rubidium and antimony in an atomic ratio Rb : Sb of from 1:2.5 to 1:30, the vanadium pentoxide content being from 0.05 to 4 percent by weight, based on the supported catalyst.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: June 20, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Blechschmitt, Peter Reuter, Friedrich Wirth
  • Naphtholactam derivatives
    Patent number: 4096145
    Abstract: Compounds of the formula ##STR1## where A is a heterocyclic group containing a pyridone moiety and R to R.sup.5 are each hydrogen or substituents conventionally encountered in dyes. The compounds are eminently suitable for coloring resins and for dyeing textile materials, particularly polyester textile materials.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: June 20, 1978
    Assignee: BASF Aktiengesellschaft
    Inventor: Ernst Schefczik
  • Recovery of sizes
    Patent number: 4095947
    Abstract: Fabrics of which the warp is sized with water-soluble polymers of acrylic acid and/or their alkali metal salts or ammonium salts, are desized by treating the sized fabric with from 30 to 300 percent by weight of water, based on the dry weight of the fabric, and separating the resulting size solution from the fabric. The recovered size solution can be directly re-used for sizing.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: June 20, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Wolf, Heinz Leitner, Wolfgang Schenk
  • Integrated spin-draw-texturizing process for manufacture of texturized polyamide filaments
    Patent number: 4096226
    Abstract: Integrated process for continuous spinning, drawing and texturizing of synthetic linear high molecular weight polyamide polymers, in which the following steps are effected in immediate succession:(a) melt-spinning filaments of said synthetic linear high polyamide polymers, preferably poly-.epsilon.-caprolactam, at temperatures of between 260.degree. and 295.degree. C and a spin-draw ratio of between 1:10 and 1:60,(b) drawing the spun filaments on at least two forwarding elements, of which the initial element has a surface temperature of between 50.degree. and 120.degree. C and the final element has a surface temperature of between 80.degree. and 350.degree.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: June 20, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Martin, Dieter Herion, Dimiter Bayew, Wolfgang Bauer
  • Polytetrafluoroethylene membrane filters for mercury recovery
    Patent number: 4094669
    Abstract: An improvement in the recovery of mercury from aqueous streams is achieved by the use of polytetrafluoroethylene filters.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: June 13, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: Edward Nicholas Balko, Shyam Dattatreya Argade
  • Manufacture of .alpha.-naphthyl-N-methyl-carbamate
    Patent number: 4095034
    Abstract: Process for the manufacture of N-alkyl and N-alkenyl carbamates by reacting a hydroxyl compound with a carbamyl chloride essentially free from phosgene and hydrogen chloride at a temperature of from 60.degree. to 130.degree. C in alkyl or halogen benzenes as solvent.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: June 13, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietrich Mangold, Karl-Heinz Koenig, Christian Reitel
  • Oxidation stable fiber lubricant
    Patent number: 4094797
    Abstract: There are disclosed oxidation stable heteric or block copolymer polyoxyalkylene compositions suitable for the treatment of thermoplastic fibers, particularly polyester and nylon fibers, prior to the processing of such fibers in conventional processes to impart false twist, or to produce textured yarn or other type yarns by mechanical heat treatment and tensioning processes. The polyoxyalkylene compounds of the invention derived from lower alkylene oxides can be initiated with a difunctional aromatic compound containing reactive hydrogens such as a dihydroxyphenol to obtain an aromatic nucleus in the polymer chain and are capped on at least one end of the chain with an alpha-olefine epoxide or mixtures thereof with at least one aliphatic monocarboxylic acid. Hydroxyl functionality can be retained on one end of the molecule.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: June 13, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: David Dudley Newkirk, Robert Bernard Login, Basil Thir
  • Process for preparing halogenated aromatic hydroxy ethers
    Patent number: 4094910
    Abstract: An oxyalkylated, halogenated product useful in making polyurethane foams is prepared by reacting an epoxide compound with a halogenated aromatic hydroxyl-containing compound (phenol) which is either a monohydroxy or polyhydroxy compound. Said aromatic hydroxyl compound has a hydroxy group attached directly to the aromatic nucleus. By the process of the invention, hydroxyalkylation occurs in the presence of a catalyst selectively active in the predominant oxyalkylation of aromatic hydroxyl groups, said catalyst selected from the group consisting of zinc, magnesium and a zinc or magnesium salt as defined. The reaction mixture can include an aliphatic hydroxyl-containing compound, a neutral phosphorus compound, and aliphatic or aromatic anhydrides or mixtures thereof to enhance the flame-retardant properties of the oxyalkylated product.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: June 13, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: Arthur Lawrence Austin, William Walter Levis, Jr.
  • Method and apparatus for providing constant magnetic tape tension
    Patent number: 4093150
    Abstract: An improved method and apparatus for generating constant tape or web tension in a transport system of the type wherein the supply and take-up reels are simultaneously driven by surface engagement with a capstan. Uniform tension is maintained throughout the entire tape pack by balancing the supply reel peripheral velocity rate of change occurring during the transport operation to the greater, but correspondingly sloped, take-up reel peripheral velocity rate of change. This balancing of the peripheral velocity of the supply and take-up reels is achieved through utilization of a constant braking system that combines the effects of torque and bias forces acting on the supply reel so as to produce constant tape tension in the take-up reel.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: June 6, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Donald L. Burdorf, James Bjordahl
  • Multi-stage isolation of high pressure polyethylene
    Patent number: 4093795
    Abstract: A process for the manufacture of ethylene polymers by high pressure polymerization of ethylene, if desired mixed with other compounds copolymerizable with ethylene, and isolation of the reaction product in a multi-stage isolation zone. The molecular weight of the ethylene polymer can be varied by varying the temperature prevailing in the isolation zone. The isolation zone preferably consists of two stages, with a higher pressure prevailing in the first stage than in the second stage.
    Type: Grant
    Filed: May 19, 1976
    Date of Patent: June 6, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Oskar Buechner, Gottfried Schlichthaerle, Friedrich Urban
  • Process and apparatus for drying and heating nylon granules
    Patent number: 4092784
    Abstract: In a process for drying and heating nylon granules, in which the granules flow downwards through a vertical zone, hot inert gases which are free from molecular oxygen are passed in counter-current through the granules and the cooled granules are then intermittently discharged in part-streams, the improvement wherein the wet granules, or a suspension of the granules in water, are fed into the zone at the top, the granules are deposited as a layer, the water is led away, the layer of granules is then transferred into the next-lower part of the zone, the granules are there allowed to flow under gravity downwards through the zone, and inert gases which are free from molecular oxygen are passed in countercurrent upwards through the granules at from 70 to 200.degree.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: June 6, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Dietrich, Ernst Guenther, Werner Hoerauf, Ernst Kissel, Hermann Linge, Eckart Neumann, Eberhard Schaefer
  • Method of spotting garments to be laundered
    Patent number: 4093418
    Abstract: The invention provides a method of use for a spotting-agent composition for use in laundering garments is provided which consists essentially of a solution of (1) about 10 weight percent or more of a nonionic surfactant produced by reacting a mixture of fatty alcohols containing 10 to 18 carbon atoms (with the proviso that the proportion of such alcohols which is attributable to alcohols containing 17 or more carbon atoms is limited to about 20 percent by weight) with mixed lower-alkylene oxides (ethylene oxide and propylene oxide) to such an extent as to have the mixed oxides comprise about 57 to 68 weight percent of the total fatty alcohol plus alkylene oxides used, with the proportion of ethylene oxide in the mixed oxides used being about 50 to 70%, in (2) an isoparaffinic solvent made of a mixture of isoparaffins containing about 11 to 14 carbon atoms.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: June 6, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: John William Compton, Stephen Ellis Eisenstein
  • Low-viscous, stable polymer dispersions and polyurethanes prepared therefrom
    Patent number: 4093573
    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: January 17, 1977
    Date of Patent: June 6, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: Gerhard G. Ramlow, Louis C. Pizzini, John T. Patton, John R. Murphy
  • Antistatic agents for melt-formed polymers
    Patent number: 4093676
    Abstract: Permanent antistatic properties are imparted to melt-formed polymers by the incorporation therewith of a polymer composition prepared by reacting a hydrogen-reactive compound with an alkylene oxide adduct of a nitrogen-containing compound. Further, the polymer composition may be capped to minimize reaction with the melt-formed polymer.
    Type: Grant
    Filed: September 1, 1971
    Date of Patent: June 6, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: Eugene A. Weipert, Charles F. Deck
  • Manufacture of butynediol
    Patent number: 4093668
    Abstract: Butynediol is prepared by reacting acetylene and formaldehyde in contact with a heavy metal acetylide as catalyst, in the liquid phase by the Reppe method. Acetylene is fed upwardly through a suspension of the catalyst in formaldehyde at such a rate that it is virtually completely consumed and a liquid zone containing no catalyst is formed above the suspension.
    Type: Grant
    Filed: March 19, 1974
    Date of Patent: June 6, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Reiss, Hans-Ingo Joschek, Rudolf Schnur, Siegfried Winderl, Juergen Dehler, Herwig Hoffmann
  • Removal of ethylene from gases
    Patent number: 4093703
    Abstract: The removal of ethylene from gases which contain the ethylene in a concentration of not more than 1.8% by volume by means of a supported palladium catalyst which contains from 0.05 to 10 g of palladium per liter of an inert inorganic carrier, the oxidation reaction being started at a temperature of from 180.degree. to 200.degree. C.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: June 6, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Oskar Buechner, Herbert Geierhaas, Volker Gierth, Siegfried Mueller, Wieland Zacher
  • Process for the preparation of foams characterized by isocyanurate and urethane linkages
    Patent number: 4092276
    Abstract: Foams characterized by isocyanurate and urethane linkages are prepared by condensing: (a) an organic polyisocyanate with a polyol or (b) a quasi-prepolymer in the presence of a blowing agent and a catalytically effective amount of an alkali metal salt of an organic phosphinic acid. The catalysts of the invention offer the advantages of longer cream times and fully cured foams in acceptable times, thus, finding particular utility in pour-in-place and slab stock foaming applications.
    Type: Grant
    Filed: March 10, 1977
    Date of Patent: May 30, 1978
    Assignee: BASF Wyandotte Corporation
    Inventor: Thirumurti Narayan
  • 1-Chloro-prop-2-ene-3-sulfonic acid compounds and their manufacture
    Patent number: 4092347
    Abstract: The new 1-monochloro- and 1,1-dichloro-prop-2,3-ene-3-sulfonic acids and their metal salts, and a process for their manufacture by reacting chloropropanesulfonic acid compounds with alkali metal carbonates, alkali metal bicarbonates and/or alkaline earth metal hydroxides at from 5.degree. to 100.degree. C to give 1-chloro-prop-2,3-ene-3-sulfonates which may then be reacted with acid compounds in a second step.The products are starting materials for the manufacture of pesticides, plasticizers, solvents, leather greases, detergents, lubricating oils, synthetic resins and slip agents. They are also assistants in electroplating processes and starting materials for the manufacture of such assistants.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: May 30, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Schenk, Helmut Schlecht, Guenther Gotsmann