Patents Assigned to BASF
  • Additive for an acid cleaning bath for metal surfaces
    Patent number: 3954645
    Abstract: A method for the preparation of a liquid concentrate solution containing 10 to 60 percent by weight water from which a metal cleaning solution may be prepared by dilution with additional water.The liquid concentrate was prepared from ferrous sulfate, an oxidant, an acid, a fluoride ion source and water. It may optionally contain ammonia and urea.
    Type: Grant
    Filed: July 25, 1973
    Date of Patent: May 4, 1976
    Assignee: BASF Wyandotte Corporation
    Inventors: Joseph V. Otrhalek, Raymond M. Ajluni
  • Process for making an ethynylation catalyst
    Patent number: 3954669
    Abstract: A new catalyst for the manufacture of butynediol from formaldehyde and acetylene, based on a carbonate which contains copper, has the structure of the natural mineral manasseite, also contains magnesium or aluminum or -- in place of aluminum -- iron or chromium and is converted into the catalyst by reaction of the copper ions with acetylene.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Josef Broecker, Wolfgang Reiss, Karl Baer, Siegfried Winderl, Wolfgang Schroeder, Herwig Hoffmann
  • Magnetic discs having a multi-component binder
    Patent number: 3955037
    Abstract: A process for the manufacture of improved magnetic discs by applying a thin layer of a fluid dispersion of magnetic pigments and optional non-magnetic pigments in a binder mixture to a non-magnetic rigid base and curing the magnetic layer which has been applied.
    Type: Grant
    Filed: November 6, 1974
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Marx, Job-Werner Hartmann, Werner Ostertag
  • Bleaching agent
    Patent number: 3954652
    Abstract: Reductive bleaching agents which contain alkali metal sulfites and zinc oxide or soluble zinc salts.
    Type: Grant
    Filed: August 29, 1973
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventor: Oswald Schmidt
  • Method for attaching anode to electrolytic cell bottom and device therefore
    Patent number: 3954593
    Abstract: In a diaphragm-type electrolytic cell for the production of chlorine and caustic alkali from alkali metal chloride solutions and having a plate type of coated metallic anode there are provided means for attaching the plate and detaching the plate anode from the cell base means without movement or destruction of either the cell base or the non-conductive corrosion resistant liner above the bus bar.
    Type: Grant
    Filed: October 23, 1973
    Date of Patent: May 4, 1976
    Assignee: BASF Wyandotte Corporation
    Inventor: John E. Schmidt
  • Substituted o-[aminosulfonyl]-glycolic anilides
    Patent number: 3954827
    Abstract: New and valuable substituted O-[aminosulfonyl]-glycolic anilides and a process for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Fischer, Gerhard Hamprecht, Dietrich Mangold, Wolfgang Rohr
  • Production of high molecular weight unsaturated ketones
    Patent number: 3954804
    Abstract: A process for the production of high molecular weight unsaturated ketones by alkylation of low molecular weight .alpha.,.beta.-unsaturated ketones with an allyl alcohol at elevated temperature in the presence of an acid catalyst. The products are intermediates for the production of various natural substances and perfumes such as the damascenones, damascones or natural dyes such as zeaxanthin, rhodoxanthin or xanthophyll.
    Type: Grant
    Filed: March 28, 1973
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Roman Fischer, Norbert Goetz
  • Production of lactams
    Patent number: 3954736
    Abstract: Continuous production of lactams by rearrangement of cycloalkanone oximes at from 210.degree. to 450.degree.C in contact with a supported catalyst in a fluidized bed wherein from 0.01 to 1 kg of steam is introduced above the fluidized bed for each kg of cycloalkanone oxime supplied. Lactams are starting materials for the production of synthetic polyamides suitable for fibers.
    Type: Grant
    Filed: October 27, 1970
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventor: Norbert Petri
  • Manufacture of uniform polymers
    Patent number: 3954722
    Abstract: A continuous process for the polymerisation of olefinically unsaturated monomers in bulk or in solution in which at least a portion of the low-viscosity materials to be fed to the polymerization zone is thoroughly mixed with a portion of the high-viscosity contents of the polymerization zone in a mixing zone disposed upstream of the polymerization zone, which mixture is then continuously fed to the polymerization zone. The resulting polymers have a uniform composition and a narrow molecular weight distribution. They may be converted to shaped articles by thermoplastic methods.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Echte, Johann Zizlsperger, Ernst Tetzlaff, Rudi Wilhelm Reffert
  • Alkali stable polyoxyethylene acetal surfactants
    Patent number: 3954886
    Abstract: Alkali stable surfactants are prepared by the sequential reaction of polyoxyalkylene compounds with high molecular weight alkyl vinyl ether followed by low molecular weight alkyl vinyl ether.
    Type: Grant
    Filed: November 22, 1974
    Date of Patent: May 4, 1976
    Assignee: BASF Wyandotte Corporation
    Inventor: William K. Langdon
  • Continuous production of cyanuric acid
    Patent number: 3954751
    Abstract: A process for the production of cyanuric acid in which urea and an inert solvent are passed into a reaction zone in which pyrolysis of the urea with the formation of cyanuric acid takes place at 200.degree. to 300.degree.C, from 50 to 760 mm and a space-time yield of from 0.1 to 2 kg of cyanuric acid per liter of reaction volume per hour, and the cyanuric acid is separated in a crystal separation zone and freed from solvent in a falling film evaporator.
    Type: Grant
    Filed: December 28, 1973
    Date of Patent: May 4, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Hartwig Fuchs, Reinhard Billet, Horst Goelz, Hubert Suter, Karl Von Erden
  • Low temperature process for the preparation of graft copolymer dispersions
    Patent number: 3953393
    Abstract: Graft copolymer dispersions of improved viscosity and superior particle size distribution are prepared by the in situ polymerization of vinyl monomers in unsaturation-containing polyols in the presence of a free-radical catalyst and certain chain transferring agents at temperatures below 100.degree. C. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethanes.
    Type: Grant
    Filed: January 7, 1974
    Date of Patent: April 27, 1976
    Assignee: BASF Wyandotte Corporation
    Inventors: Gerhard G. Ramlow, Louis C. Pizzini, John T. Patton, Jr.
  • Compounds of the naphthalimide series
    Patent number: 3953451
    Abstract: Naphthalimides of the formula ##SPC1##In which R is substituted alkyl or heteroaralkyl and R' is alkyl or alkyl bearing alkoxy or hydroxy as a substituent. The compounds are eminently suitable for the optical brightening of synthetic fibers, particularly acrylonitrile polymers, on which outstanding brightening effects are obtained.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: April 27, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Renate Elisabeth Hell, Horst Scheuermann
  • Apparatus for the manufacture of crimped filaments
    Patent number: 3950831
    Abstract: Apparatus for crimping filaments using turbulent heated fluids to which the filaments are exposed in two treatment chambers connected to one another. The first treatment chamber is constructed in two parts, the parting plane between the two parts is stepped and the filament guide means are intersected by the parting plane. The filaments are easy to introduce and the operating temperature need not be reduced in the event of any filament breaking.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: April 20, 1976
    Assignee: BASF Farben and Fasern AG
    Inventors: Wolfgang Bauer, Dieter Herion, Wolfgang Martin, Klaus Metzger
  • Dropout compensator for a trisequential color video playback system
    Patent number: 3952326
    Abstract: The invention relates to a dropout compensator for a trisequential color video playback system which compensates for dropouts in color video signals with a high degree of accuracy. Only the color information including the Y low portion of the luminance signal is delayed for a period of substantially one line of video information after separation of the color information from the Y high portion of the luminance signal and after FM demodulation of the color information signals. In addition to the two conventional delay means, connected in series, present in a trisequential system and necessary for converting time-sequential occuring color signals into signals occurring at the same time, there is provided a third delay means for the compensation of dropouts.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: April 20, 1976
    Assignee: BASF Aktiengesellschaft
    Inventor: Gerhard Rotter
  • Manufacture of a modified titanium component for catalysts of the Ziegler/Natta type
    Patent number: 3951858
    Abstract: A process for the manufacture of a modified titanium component for catalysts of the Ziegler/Natta type by milling a mixture of a titanium compound of the formula TiCl.sub.3 .13AlCl.sub.3 and an organic electron donor containing phosphorus and/or nitrogen atoms. The characterizing feature is that the mixture is first milled wet in a liquid inert hydrocarbon medium under specific conditions, then separated from the hydrocarbon medium and finally milled dry under specific conditions. Such modified titanium components give catalysts which provide particularly well reproducible results in the polymerization of .alpha.-olefins.
    Type: Grant
    Filed: January 8, 1974
    Date of Patent: April 20, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Hannes Schick, Peter Hennenberger, Gerhard Staiger, Heinz Mueller-Tamm
  • Production of polymeric compounds having functional end groups
    Patent number: 3951931
    Abstract: A process for the manufacture of polymeric compounds which have any desired number of functional end groups. In this process, polyfunctional organoalkali metal compounds which have been manufactured by reaction of divinylbenzene with low molecular weight organoalkali metal compounds, are reacted direct, or after prior reaction with anionically polymerizable monomers, with reactive low molecular weight compounds. The polymeric compounds which have functional end groups can be employed, for example, as emulsifiers, secondary dispersions, secondary dispersing agents or polymeric carrier substances.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: April 20, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Walther Burchard, Helmut Eschwey
  • Decreasing the amount of dichloroacetyl chloride contained in monochloroacetyl chloride
    Patent number: 3950415
    Abstract: A process for decreasing the amount of dichloroacetyl chloride contained in monochloroacetyl chloride by treating monochloroacetyl chloride containing dichloroacetyl chloride with water, an alcohol or a carboxylic acid followed by separation of monochloroacetyl chloride by distillation from the mixture thus obtained. Monochloroacetyl chloride is used for the production of plant protection agents.
    Type: Grant
    Filed: March 6, 1974
    Date of Patent: April 13, 1976
    Assignee: BASF Aktiengesellschaft
    Inventor: Ulrich Bressel
  • Disperse azo dyes of the 2,6-diaminopyridine series
    Patent number: 3950321
    Abstract: Disperse azo dyes of the 2,6-diaminopyridine series in which one of the amine groups in the 2-position or 6-position is acylated. The dyes give brilliant yellow to blue colorations of generally high fastness properties particularly on polyesters.
    Type: Grant
    Filed: October 18, 1973
    Date of Patent: April 13, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Gunther Lamm
  • Manufacture of methane
    Patent number: 3950368
    Abstract: A two-stage process for the manufacture of methane from hydrocarbons is described. In the first stage, the hydrocarbons are converted into methane-rich gases, using the nickel catalyst described below. The cracked gases thus obtained are cooled and converted into methane-rich gases in a further catalytic process stage, using a methanization catalyst or the nickel catalyst mentioned below. To produce the nickel catalyst, the compound Ni.sub.6 Al.sub.2 (OH).sub.16.CO.sub.3.4H.sub.2 O is prepared in aqueous solution. The catalyst is obtained from this compound by drying, calcination and subsequent reduction in a stream of hydrogen whilst maintaining very specific temperature gradients between the drying stage and the calcination stage.
    Type: Grant
    Filed: November 13, 1973
    Date of Patent: April 13, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Josef Broecker, Guenter Zirker, Bruno Triebskorn, Laszlo Marosi, Matthias Schwarzmann, Winfried Dethlefsen, Knut Kaempfer