Patents Represented by Law Firm Keil, Thompson & Shurtleff
  • Patent number: 4118588
    Abstract: Methacrylic acid and methyl methacrylate are manufactured by reacting, respectively, propionic acid and methyl propionate with dimethoxymethane in the presence of catalysts based on phosphates and/or silicates of magnesium, calcium, aluminum, zirconium, thorium and/or titanium, and in the presence of from 0 to 0.5 mole of water per mole of the acetal.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: October 3, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerd Fouquet, Franz Merger, Rolf Platz, Karl Baer
  • Patent number: 4116953
    Abstract: Compounds of the formula ##STR1## in which K is the radical of a coupling component;X is hydrogen, chloro, bromo, methyl or nitro; andY is hydrogen, chloro, bromo or methyl.The compounds are eminently suitable as pigments for coloring printing inks, surface coatings and resins with exceptional fastness properties.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: September 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Dimroth, Helmut Junge, Peter Tonne, Rolf Urtel
  • Patent number: 4116982
    Abstract: The new product 3-oximino-4-oxo-2,5-dimethyl-tetrahydrofuran is manufactured by oximation of the new product 3-carboxy-4-oxo-2,5-dimethyl-tetrahydrofuran with aqueous nitrous acid, nitrite esters or nitrosyl chloride. Because of its fine caramel-like fragrance it may be used for the manufacture of scents and flavor materials. In addition it presents an advantageous method of synthesis of the sought-after flavor material 4-oxo-3-hydroxy-2,5-dimethyl-4,5-dihydrofuran (furaneol).
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: September 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Baumann, Werner Hoffmann, Karl VON Fraunberg
  • Patent number: 4117150
    Abstract: New and valuable furan derivatives containing a fluorodichloromethylthio radical, fungicides containing these compounds as active ingredients, and processes for combatting fungi with these compounds.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: September 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst-Heinrich Pommer, Sabine Thym, Wolfgang Reuther
  • Patent number: 4117004
    Abstract: Amidosulfonic acids are manufactured by reacting ureas first with sulfur trioxide and then with sulfuric acid in the presence of organic solvents. The products are sweeteners, in particular cyclohexylamidosulfonic acid and its calcium, sodium and potassium salts, and starting materials for the manufacture of sweeteners, dyes and pesticides.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: September 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventor: Roman Fischer
  • Patent number: 4117019
    Abstract: A process for the manufacture of o-benzyltoluenes by reaction of o-xylyl halides with benzenes in the presence of sulfuric acid or in the presence of phosphoric acid and adjuvants or in the presence of sulfuric acid and adjuvants. The products are starting materials for the manufacture of anthracene and anthraquinone and their derivatives.
    Type: Grant
    Filed: February 14, 1975
    Date of Patent: September 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Eilingsfeld, Manfred Patsch, Karl-Gerhard Baur, Wolfgang Ruehenbeck
  • Patent number: 4116984
    Abstract: The manufacture of pure isomeric 1,4-dibromo-epoxy-cyclohexenes and their derivatives, which are starting compounds for units used to synthesize neutral compounds, e.g. cyclitols or aminocyclitols.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: September 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Prinzbach, Reinhard Schwesinger
  • Patent number: 4115386
    Abstract: A new pigmentary form of perylene-3,4,9,10-tetracarboxylic acid diimide of the formula ##STR1## which has a specific surface area (measured by the BET method) of from 10 to 35 m.sup.2 /g and a maximum in the particle size distribution at from 0.1 to 0.5 .mu.m, the proportion of particles between these sizes being at least 50% of the total distribution and the mean ratio of length to width being from 3:1 to 1:1. The pure shade of the new pigmentary form gives strongly yellowish red colorations which are very pure and very bright. The new pigmentary form also has a good hiding power, which is from 2 to 3 times as great as that of the pigmentary forms of the prior art.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: September 19, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Ludwig Gall, Wolfgang Fabian
  • Patent number: 4114361
    Abstract: A high-speed twisting machine for stranding wires or the like wherein there are a plurality of rotor units or assemblies, one on each side of a cradled take-off spool, each rotor unit consisting essentially of a rotatably driven hollow bearing tube with inlet and outlet openings for the transported wires in combination with open-ended concave guide pots attached at their base to the opposing faces or ends of the bearing tubes on either side of a cradled take-off spool, the outer peripheral guide surface of each pot being symmetrical around the machine axis to define a curved surface corresponding closely to the path of the transported wires taken off during normal twisting operation. The wire openings or bores near the end of the bearing tube must be located outside the curved guide surface of the guide pot connected to the same tube end to provide easy access and visibility.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: September 19, 1978
    Assignee: Barmag Barmer Maschinenfabrik AG
    Inventors: Dietrich Berges, Bodo Damzog, Ulrich Saam
  • Patent number: 4115314
    Abstract: A process for the manufacture of reaction products of fatty alcohols and epichlorohydrin, which have been reacted with polyhydric alcohols or their monoethers and may or may not have been further modified with alkylene oxides, the reaction products per se and emulsifiers, solubilizing agents and fat-like materials consisting of these products.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: September 19, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Karl Seib, Heinz Krapf
  • Patent number: 4115638
    Abstract: The invention relates to a process for rapidly letting-down the pressure in continuous high pressure polymerization systems for the polymerization of ethylene. In this process, the let-down hot reaction mixture is passed into an expansion vessel in such a way that the jet of let-down hot reaction mixture issuing from the let-down line is led into the partially water-filled expansion vessel at an angle of from 0.degree. to 45.degree. to the water surface, so that the jet does not enter below the surface but must touch or strike it. The method described makes it possible to let the mixture down partially and thus to slow down the decomposition in the case of explosive decomposition reactions occurring in the polymerization system.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: September 19, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Becker, Klaus Borho, Oskar Buechner, Hans Gropper, Ulrich Hartig
  • Patent number: 4113720
    Abstract: Disperse azo dyes having a diaminopyrimidine as coupling component. The dyes give brilliant colorations on textile material of synthetic fibers which have excellent fastness properties, including fastness to light and fastness to dry-heat pleating and setting. These disperse azo dyes are identified by the formula: ##STR1## in which D is the radical of a heterocyclic diazo component or a substituted diazo component of the aniline series, one X is NH.sub.2 and the other X is unsubstituted or substituted cycloalkyl, aralkyl or aryl or substituted alkyl.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dehnert, Guenter Dunkelmann
  • Patent number: 4113939
    Abstract: Valuable substituted 2,1,3-benzothiadiazin-(4)-one-2,2-dioxides having a herbicidal action, herbicides containing these active ingredients, a process for controlling the growth of unwanted plants with these compounds, and processes for their manufacture.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Fischer, deceased, Gerhard Hamprecht
  • Patent number: 4113732
    Abstract: Process for the production of benzothiazoles from N-arylsubstituted thioureas by oxidative ring closure characterized by the use of chlorine as oxidizing agent and by the presence of catalytic amounts of bromine. Yield and quality of the benzothiazoles obtained are very good.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Opgenorth, Horst Scheuermann
  • Patent number: 4113933
    Abstract: A process for the manufacture of homopolymers and copolymers of .alpha.-monoolefins of 2 to 6 carbon atoms by polymerizing the monomer or monomers by means of a Ziegler catalyst system comprising (1) a catalyst component containing titanium and (2) a particular compound of aluminum, magnesium or zinc, the atomic ratio of titanium from catalyst component (1) to metal (Me) from catalyst component (2) being from 1 : 0.1 to 1 : 500, wherein the titanium-containing catalyst component (1) employed is the solid-phase product (VI) obtained by (1.1) first bringing into contact (1.1.1) a particular finely divided, porous, inorganic oxidic material (I) and (1.1.2) a particular aluminum compound (II) dissolved in an organic solvent, to form a solid-phase product (III) and (1.2) then bringing into contact (1.2.1) the solid-phase product (III) obtained from stage (1.1) and (1.2.2) a solution (IV) which is obtained on bringing together (IVa) 100 parts by weight of a particular alcohol, (IVb) from 0.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunther Schweier, Erich Kolk, Heinz Mueller-Tamm, Hans Frielingsdorf, Robert Bachl, Wolfgang Gruber
  • Patent number: 4112674
    Abstract: Machinery for the industrial mass production of rigid pronged members or of continuous strips of a series of pronged members linked together by linking bridges, and embodying two dies in facing assembly, the first die having a longitudinal groove composed of the following successive segments: an inlet section for guiding a strip of metal, a cutting section with an opening for scrap removal, a die stamping section, and finally an outlet section for guiding the formed pronged members, and the second die, facing the die stamping section, having means for forming the heads of the pronged members and for bending down the prongs, and also having a suitable cutting counter face opposite the cutting die.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: September 12, 1978
    Inventor: Amedee Fesquet
  • Patent number: 4113764
    Abstract: N-Alkylglycinonitriles are manufactured by reacting N-alkylamines with formaldehyde and hydrocyanic acid under specific reaction conditions in respect of temperature, reaction time and hydrocyanic acid concentration. The products are starting materials for the manufacture of dyes, fungicides, bactericides, textile assistants and assistants used in dental cosmetics, gas purification and waterproofing.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Harry Distler, Helmut Schlecht, Erwin Hartert
  • Patent number: 4113935
    Abstract: A multistage stretching process for producing low shrinkage film bands of a thermoplastic polymer, especially polypropylene, wherein the stretching temperature is increased from one stage to the next under prescribed conditions for each stage and the stretched bands are then heat stabilized with shrinkage in a relaxed condition at a temperature of about 20.degree. C. to 30.degree. C. below the crystalline melting point of the polymer. The resulting film bands are especially useful in carpet backings.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: September 12, 1978
    Assignee: Barmag Barmer Maschinenfabrik AG
    Inventors: Heinz Schippers, Friedhelm Hensen, Gerhard Koslowski, Dieter Czerwon
  • Patent number: 4113593
    Abstract: Photopolymerizable binders for UV-curing printing inks and coating compositions, which contain benzophenone-based photoinitiators and photosensitizers including p-dimethylaminobenzaldehyde and esters of p-dimethylaminobenzoic acid.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Barzynski, Guenter Heil
  • Patent number: 4113754
    Abstract: The isolation and regeneration of catalysts of type I or IIclRh(CO)(PR.sub.3).sub.2 Ihrh(CO)(PR.sub.3).sub.3 II,where the R's are identical or different hydrocarbon radicals, to give the catalysts in a pure form, is effected by regenerating aqueous rhodium salt solutions, as obtained on treating distillation residues of hydroformylation mixtures with oxygen-containing mineral acids and peroxides, by a method wherein the said aqueous rhodium salt solutions are treated with a cation exchanger, the latter is then separated from the solution, the absorbed rhodium ions are desorbed with hydrochloric acid, the hexachlororhodate solutions, containing hydrochloric acid, are reacted, in the presence of a water-soluble organic solvent and a tertiary phosphine PR.sub.3, with carbon monoxide, or with compounds which eliminate carbon monoxide, at from 0.degree. to 150.degree.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: September 12, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Kummer, Heinz-Walter Schneider, Kurt Schwirten