Patents Represented by Law Firm Keil, Thompson & Shurtleff
  • Glass-fiber-reinforced thermoplastic molding compositions showing improved flowability and toughness
    Patent number: 4080349
    Abstract: Glass-fiber-reinforced thermoplastic molding compositions showing improved flowability and toughness and containing from 0.1 to 2% by weight, based on the total mixture, of a low molecular weight polyolefin wax to which from 2 to 50% by weight of polar side chains have been grafted.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: March 21, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Wurmb, Dietrich-Wolfgang Mueller, Hans Georg Dorst, Klaus Bronstert, Rainer Theysohn
  • Manufacture of tetrahydrofuran from the diacetate of 1,4-butanediol
    Patent number: 4079068
    Abstract: Tetrahydrofuran is prepared from a compound containing butanediol or capable of generating butanediol. The butanediol-donating compound is an ester of butanediol which is reacted with hydrolysis and etherification by passing it downwardly through a distillation column together with an acid catalyst and passing steam upwardly therethrough. The product which distills off is tetrahydrofuran.
    Type: Grant
    Filed: August 21, 1975
    Date of Patent: March 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Eckhard Hetzel, Hans-Martin Weitz, Ludwig Vogel, Juergen Hartig
  • Accumulator equipped with cathodes of manganese dioxide or lead dioxide
    Patent number: 4079174
    Abstract: Accumulators having solution electrodes containing manganese dioxide and lead dioxide as active material on the cathode side and containing acid electrolytes. The electrolyte has a content of onium salts soluble in aqueous medium.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: March 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Fritz Beck, Gerd Wunsch, Wolfram Treptow
  • Desalination apparatus
    Patent number: 4077849
    Abstract: Desalination apparatus utilizing solar heating of metal member(s) such as balls, rollers, or metal endless belt(s) in a heating chamber and vaporizing saline water with the latent heat in said metal member(s) by spraying saline water thereon in a vaporizing chamber, a water-cooled condenser to condense the vapors, a trough to collect the condensate, a rinse tank to remove salt deposits and/or saline water from the metal member(s), and means for returning the rinsed metal member(s) for solar reheating.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: March 7, 1978
    Inventor: Kurt F. Ziehm, Jr.
  • Removal of mercury from liquids
    Patent number: 4077856
    Abstract: In a process for the removal of mercury by treatment with elementary nickel an external voltage is applied to maintain the potential of the nickel at a value which differs from the potential of the reversible hydrogen electrode in the liquid concerned by not more than from -250 mV to +50 mV. The treatment is carried out at temperatures of from 80.degree. to 230.degree. C.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: March 7, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Habermann, Dieter Stockburger, Peter Thoma, Gotthard Csizi
  • Manufacture of phthalic anhydride from o-xylene or naphthalene
    Patent number: 4077984
    Abstract: A process for the manufacture of phthalic anhydride by oxidizing o-xylene and/or naphthalene over a supported catalyst containing vanadium pentoxide and titanium dioxide, at from 350.degree. to 500.degree. C, in which the o-xylene or naphthalene is passed, with an oxygen-containing carrier gas, over the catalyst, and in which the catalyst in the first 25-50 per cent by volume of the total catalyst volume, in the direction of flow of the mixture of o-xylene or naphthalene and carrier gas, contains from 0.01 to 0.3 per cent by weight, based on titanium dioxide, of rubidium, but no phosphorus, in the active composition, while the remainder of the catalyst contains from 0.02 to 0.8 per cent by weight, based on titanium dioxide, of phosphorus, but no rubidium, in the active composition.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: March 7, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Blechschmitt, Peter Reuter, Friedrich Wirth, Paul Hornberger
  • 1-Polyfluoroalkoxyphenyl-4-substituted-5-halopyridazones-6 and herbicidal uses thereof
    Patent number: 4077797
    Abstract: 1-Polyfluoroalkoxyphenyl-4-substituted-5-halopyridazones-6 in which the 4-substituent is amino, monoalkylamino, dialkylamino (1 to 3 carbon atoms per alkyl) or lower alkoxy, chloroacetamido, CH.sub.3 COOCH.sub.2 --CO--NH-- or trimethylenimino and herbicidal uses thereof to control growth of unwanted plants among crop plants, especially cotton.
    Type: Grant
    Filed: May 26, 1976
    Date of Patent: March 7, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Fischer, deceased, Hanspeter Hansen, Wolfgang Rohr
  • Manufacture of ethylene polymers in a two-zone tubular reactor at pressure above 500 bars
    Patent number: 4076919
    Abstract: Ethylene polymers are manufactured in a tubular reactor under high pressure and at high temperatures in the presence of polymerization initiators. The polymerization is carried out in two different zones of the reactor, a mixture of ethylene, oxygen and regulator being fed into the first zone and a co-initiator having a half-life temperature, measured in benzene, of above 140.degree. C being additionally fed into the second zone. The co-initiator may be a peroxide or a hydroperoxide. The melt index, or the haze and gloss of a film produced from the resulting ethylene polymer, can be varied advantageously through the choice of the co-initiator.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: February 28, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Friedrich Urban, Oskar Buechner, Ulrich Hartig, Hans Gropper
  • Continuous dyeing of polyester fibers and cellulose fibers
    Patent number: 4076497
    Abstract: Polyester fibers and cellulose fibers, and blends of these fibers, are dyed continuously with disperse dyes, or dispersed dyes, by continuous application of an aqueous dye liquor which contains, as the essential dyeing assistant, a polyoxyalkylated amine, a polyoxyalkylated amine-oxide and/or a quaternized polyoxyalkylated amine which in 1% strength aqueous solution has a cloud point of not less than 18.degree. C and which is derived from amines which contain at least 2 nitrogen atoms and at least one group which can be oxyalkylated, followed by drying and fixing.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: February 28, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Freyberg, Dieter Horn, Knut Oppenlaender, Hans Wolf, Dieter Distler
  • Flameproof nylon molding compositions
    Patent number: 4076682
    Abstract: Thermoplastic molding compositions comprise a linear nylon, an adduct of hexachlorocyclopentadiene and a dienophile as a flameproofing agent, zinc oxide as a synergistic agent, and reinforcing fillers. The zinc oxide is manufactured by adding an aqueous solution of a zinc salt and an aqueous solution of a base to an aqueous suspension of an inorganic carrier, the zinc oxide being precipitated at a pH of from 10 to 12. The molding compositions can be processed to give flameproof moldings having good mechanical properties.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: February 28, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Theysohn, Rolf Wurmb, Bernd Leutner, Hans-Ulrich Schlimper
  • Polycyclic scents
    Patent number: 4076748
    Abstract: New polycyclic Diels-Alder adducts which are formed on reaction of 8-vinyl-tricyclo-[5,2,1,0.sup.2,6 ]-dec-8-ene or 8-hydroxy-8-vinyl-tricyclo-[5,2,1,0.sup.2,6 ]-decane with alkenes or alkynes having one or two activating substituents, e.g., --COOH, --COOCH.sub.3, --COOC.sub.2 H.sub.5, --CHO, --COCH.sub.3, --COC.sub.2 H.sub.5 or --CN. They have green, fresh, fruity and in some cases woody odors with long-lasting tenacity and/or fixing properties. They can be used as constituents of perfumes and of compositions for perfuming body care products, detergents and other consumer products.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: February 28, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Hoffmann, Karl VON Fraunberg
  • Lock extractor
    Patent number: 4074410
    Abstract: A device for extracting the lock from an automobile ignition lock assembly comprising a collar which has an end adapted to bear against the frame surrounding the lock and a threaded shaft having at one end a means for engaging the lock and at the other end a handle which bears against the other end of said collar in a manner such that the turning of said handle will withdraw said engaging means and attached lock from the ignition lock assembly and surrounding frame.
    Type: Grant
    Filed: December 30, 1975
    Date of Patent: February 21, 1978
    Assignee: Credit Industry Associates, Inc.
    Inventor: Robert L. Jarm
  • 2,1,3-Benzothiadiazines
    Patent number: 4075004
    Abstract: New and valuable substituted 2,1,3-benzothiadiazine compounds having a herbicidal action, herbicides containing these compounds, a method of controlling the growth of unwanted plants with these compounds, and methods for their manufacture.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: February 21, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Hamprecht, Ulrich Schirmer, Bruno Wuerzer, Guenter Retzlaff
  • Naphthalimide compounds and optical brighteners
    Patent number: 4075211
    Abstract: Compounds of the naphthalimide series which in the dissolved condition exhibit a characteristic blue, violet or bluish violet fluorescence, and a process for their production. The compounds are outstandingly suitable for the optical brightening of synthetic fibers.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: February 21, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Scheuermann, Albert Hettche
  • Stabilization of pyrophoric metal powders with alkylene oxide polymers
    Patent number: 4073977
    Abstract: A method of stabilizing pyrophoric metal powders by treating the metal powders with alkylene oxides to form a polymer coating on the metal particles.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: February 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Koester, Gerd Wunsch, Eduard Schoenafinger, Hans H. Schneehage
  • Apparatus for the manufacture of the magnetic coatings of magnetic disks
    Patent number: 4073262
    Abstract: Apparatus for the manufacture of the magnetic coatings of magnetic disks consisting essentially of a clamp/drive unit for the base plate to be coated, a unit for applying the magnetic dispersion, and flat covering elements which rotate during centrifuging of the coated base plate in the same direction as said base plate and at a short distance from the surfaces thereof.
    Type: Grant
    Filed: November 9, 1976
    Date of Patent: February 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Scheffel, Volker Richter
  • Manufacture of ethylene polymers in an autoclave reactor
    Patent number: 4074040
    Abstract: Ethylene polymers are manufactured by polymerizing ethylene under high pressure at high temperatures in an autoclave reactor. The heat of reaction generated by the polymerization is removed, within the reactor, by a cooling system in which the cooling medium is ethylene; the pressure of the monomer in the cooling system should differ by from 0 to 200 bars from the pressure prevailing in the polymerization system, and the temperature of the monomer on entering the cooling system is at least 40.degree. C. lower than the temperature prevailing in the autoclave. The process permits an increase in the conversion achieved in the polymerization reaction.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: February 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Oeder, Hans Gropper, Friedrich Urban
  • Manufacture of heat-stable brominated oligomers of monovinyl-aromatic compounds
    Patent number: 4074032
    Abstract: A process for the manufacture of heat-stable, brominated oligostyrenes by brominating selectively hydrogenated oligostyrenes in halogenated solvents in the presence of Lewis acids at from -25.degree. to +20.degree. C. The brominated oligomers are highly heat-stable and can be processed, by themselves or as components of mixtures with other thermoplastics, to give various shaped articles.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: February 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Klaus Penzien, Hermann Gausepohl
  • Magnetic recording media having a low coefficient of friction
    Patent number: 4074002
    Abstract: Magnetic recording media comprising a base and, applied thereto, at least one firmly adhering magnetic layer based on magnetic particles dispersed in a mixture of organic binders, wherein at least the uppermost magnetic layer additionally contains non-magnetic particles of precipitated silica having a primary particle diameter of from 0.02 to 0.1.mu., a secondary particle diameter of from 2 to 4.mu. and a pH of from 5 to 8.As a result of the incorporation of such a precipitated silica into the magnetic layer, the coefficient of friction between the latter and metals remains uniformly low even after prolonged use, and no stick-slip motion occurs.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: February 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Hack, Dieter Schaefer, Herbert Motz
  • Auramine salts
    Patent number: 4074060
    Abstract: Auramine salts having an ester of sulfopropionic acid as anion. The salts are more stable in storage than known auramine salts and therefore very suitable for the preparation of storage-stable solutions.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: February 14, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Eisert, Karl Schmeidl