Patents Represented by Law Firm Johnston, Keil, Thompson & Shurtleff
  • Patent number: 4021463
    Abstract: Regeneration and separation of catalysts Me(CO)(PR.sub.3).sub.2 Hal(I) and HMe(CO)(PR.sub.3).sub.3 (II), where Me is rhodium or iridium, Hal is halogen and R denotes the same or different hydrocarbon radicals, from distillation residues of hydroformylation mixtures by treating said residues with aqueous acids and peroxides, mixing the resulting Me salt solutions with water-soluble organic solvents and with a phosphine PR.sub.3 and, in the case of the preparation of compound I, with a hydrohalic acid or an alkali metal halide, reacting the solutions at from 0.degree. to 150.degree. C. and from 1 to 250 bars in case I with carbon monoxide or compounds eliminating carbon monoxide and in case II additionally with hydrogen, and separating the resulting compound I or II.
    Type: Grant
    Filed: September 24, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Kummer, Kurt Schwirten, Hans-Dieter Schindler, deceased, by Maria Elisabeth Schindler, by Ute Lang, by Rainer Schindler, heirs-at-law
  • Patent number: 4021413
    Abstract: Condensates containing urea and formaldehyde in a molar ratio of from 1:2.5 to 1:4.5 are converted into wood glue by allowing the viscosity to increase at a pH of from 1 to 3 and at only slightly elevated temperature and then adding urea at a pH of 7 to 9.
    Type: Grant
    Filed: July 2, 1974
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Eisele, Harro Petersen, Johann Mayer, Otto Wittmann
  • Patent number: 4021521
    Abstract: A process for the manufacture of wires and profiles, wherein thermoplastics are first mixed, in the melt, with from 5 to 40 per cent by weight (based on the mixture) of aluminum needles of length from 0.3 to 6 mm, of average diameter from 0.02 to 0.1 mm and of length to average diameter ratio of from 3 to 100, the mixture is extruded to give a wire or profile in which the aluminum needles are substantially oriented axially, and this wire or profile is finally hardened by cold-working.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Heinz Scholl, Gerhard Grimm
  • Patent number: 4021222
    Abstract: The new compound S-(2,3-dichloroallyl)-(2,2,4-trimethylazetidine)-1-carbothiolate, herbicides containing this compound as active ingredient, a process for controlling the growth of unwanted plants with this compound, and a process for its manufacture.
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Fischer, deceased, Hanspeter Hansen, Wolfgang Rohr
  • Patent number: 4021491
    Abstract: A process for the manufacture of 2,6,6-trimethyl-cyclo-hex-2-en-1-one by reacting 3-alkoxy-4-methyl-3-pentene or 3-alkoxy-4-methyl-2-pentene or a mixture of these compounds with acrolein, and reacting the resulting 2-alkoxy-2-ethyl-3,3-dimethyl-2,3-dihydro-4H-pyran with acids. The product is an intermediate for numerous syntheses of scents. Furthermore, a number of carotenoid syntheses are based on 2,6,6-trimethyl-cyclohex-2-en-1-one or its hydrogenation product, 2,6,6-trimethyl-cyclohexan-1-one.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Hoffmann, Manfred Baumann
  • Patent number: 4021411
    Abstract: A process for the production of high molecular weight .alpha.,.beta.-unsaturated aldehydes by alkylation of the .gamma.-carbon atom of a lower molecular weight .alpha.,.beta.-unsaturated aldehyde with a substituted allyl alcohol which has a chain branching in the 4-position carbon atom or a phenyl radical in the 4-position or of a corresponding allyl alcohol carboxylic ester at elevated temperature in the liquid phase.The products are valuable intermediates for the production of natural substances and odorants.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: May 3, 1977
    Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft
    Inventors: Norbert Goetz, Roman Fischer
  • Patent number: 4021223
    Abstract: New and valuable herbicide comprising mixtures of benzofuranylalkylamino sulfonates, and methyl .alpha.-chloro-.beta.-(4-chlorophenyl)-propionate.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventor: Adolf Fischer, deceased
  • Patent number: 4021226
    Abstract: New and valuable herbicide based on 1-phenyl-4-amino-5-chloro (or -5-bromo)-pyridazone-(6) in the form of an aqueous suspension.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Preugschas, Ewald Daubach, Roman Fischer, Manfred Herrmann
  • Patent number: 4019719
    Abstract: An apparatus for thoroughly mixing components of fluid material and, more particularly, for combining and homogenizing streams of gaseous, liquid and/or granular material by passage through a tube-like conduit which contains a plurality of consecutive mixing elements comprising a set of stationary, angularly disposed flow-deflecting baffles of particular form and configuration which cause a repeated dividing, displacement and recombining of the fluid stream and thereby provide improved radial mixing and approximation of ideal plug flow.
    Type: Grant
    Filed: April 1, 1976
    Date of Patent: April 26, 1977
    Inventors: Hans H. Schuster, Peter Zehner
  • Patent number: 4019852
    Abstract: A process for the quiet and smokeless flaring of process gases by sharp separation of the air intake and combustion steps. Compared with conventional off-gas flares, steam consumption is reduced and blow-back of the flame into the mixing tube is avoided by using a combined mixing and combustion chamber. This extends the operating range and life of flare facilities.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: April 26, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerd Hemmer, Klaus Hess, Rolf Becker, Klaus Liebhaber
  • Patent number: 4020102
    Abstract: 2-Hydroxynaphthalene-3-carboxylic acid is prepared by the reaction of sodium-.beta.-naphtholate with carbon dioxide, extraction of the reaction mixture in the presence of water with benzene or a benzene derivative in a specific ratio and separation of the end product from the extracted mixture. The product is a starting material for the production of dyes and a coupling component in the manufacture of azo dyes.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: April 26, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Juergen Quadbeck-Seeger, Helmut Hoch
  • Patent number: 4019311
    Abstract: A process for the production of a multifilament textured yarn by melt-spinning different polymers (for example a polyamide and a polyester) or copolymers (for example copolymers of nylon-6 and nylon-6,6) to form a highly preoriented multifilament yarn at substantially the same draw-off rate for all the constituent filaments of the yarn, followed by stretching under substantially the same stretching conditions for all the constituent filaments of the yarn, the stretching ratio lying above the elastic limit of at least one of the spun polymers and the preorientation of the freshly spun filaments being sufficient to provide a maximum stretching ratio available in the stretching stage of not more than 1:2.5, i.e. not more than 2.5 times the unstretched or spun length of filaments. Yarns are produced which may have the appearance of texturized continuous multifilament yarns or crimped staple fiber yarns.
    Type: Grant
    Filed: July 16, 1974
    Date of Patent: April 26, 1977
    Assignee: Barmag Barmer Maschinenfabrik Aktiengesellschaft
    Inventor: Heinz Schippers
  • Patent number: 4019511
    Abstract: A portable conditioned heated air breathing device is provided comprising a compartmented canister with a collapsible hose storage compartment, an air conditioning compartment and a heating compartment and which also contains an ejector for ejecting an additive into the conditioned air as well as a structural arrangement for mixing fresh air with heated air, a filter for filtering the air and a device for igniting a burner from the outside of the canister and a manually controllable valve for controlling the flow of fuel to the burner.
    Type: Grant
    Filed: September 11, 1975
    Date of Patent: April 26, 1977
    Inventors: Peter N. Choporis, Robert N. Choporis
  • Patent number: 4020025
    Abstract: Foams of mixtures of polyolefins and styrene polymers are produced by mixing the polymers with low-boiling expanding agents in the presence of a hydrogenated styrene/butadiene block polymer or a graft polymer of styrene on a polyolefin at temperatures above the softening point of the polymer mixture and under a pressure which prevents foaming of the mixture, followed by extrusion of the foamable mixture into a zone of lower pressure. The resulting foams are resistant to organic solvents.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: April 26, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Zeitler, Heinz Mueller-Tamm
  • Patent number: 4018402
    Abstract: An improved tape transport apparatus of the type in which the supply and take-up reels are simultaneously driven by surface engagement of a capstan with the outermost layer of tape on each reel. The uniform tape tension required in a system of this type is produced and maintained by the combination of a braking force on the reel acting as the supply reel and of different biasing forces which cause different deformation of the capstan at the points of surface engagement of the supply and take-up reels with the capstan. A substantially constant tension profile is obtained by balancing the tension contributed by the two types of forces. A braking/biasing unit on each of the reel shafts provides both an undirectional braking force to resist the rotation of the shaft acting as the supply shaft and the biasing forces required to produce the unequal deformation.
    Type: Grant
    Filed: May 6, 1975
    Date of Patent: April 19, 1977
    Assignee: BASF Aktiengesellschaft
    Inventor: Donald L. Burdorf
  • 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
  • Patent number: 4018968
    Abstract: Coated magnetic recording media, especially video tapes and computer tapes, comprising a non-magnetic base carrying a magnetic coating which consists of a dispersion, essentially containing a finely divided magnetic pigment in an organic binder and at least one lubricant. A compound of the formula ##STR1## in which n is an integer of from 1 to 3 and R is alkyl, alkoxyalkyl or aralkyl, each of 3 to 18 carbon atoms, is used as a lubricant. The products have high abrasion resistance coupled with only little 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: Ute Neumann, Hermann Roller, Job-Werner Hartmann, Joachim Hack, Herbert Motz, Werner Ostertag
  • 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
  • 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
  • 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