Patents Assigned to BASF
  • Manufacture of substituted glycinonitriles
    Patent number: 4022815
    Abstract: N-Alkylglycinonitriles are manufactured by reaction of N-alkylamines with formaldehyde and hydrocyanic acid under specific conditions of temperature, reaction time and hydrocyanic acid concentration.
    Type: Grant
    Filed: January 16, 1976
    Date of Patent: May 10, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Schlecht, Harry Distler, Erwin Hartert
  • Process for the production of bromo substituted tetrahydrofuran sulfones
    Patent number: 4022804
    Abstract: A process for the manufacture of .beta.-bromoalkylsulfones and .beta.-bromoalkenylsulfones by addition reaction of sulfonic acid bromides with olefins or acetylenes in the presence of hydroperoxide and, optionally, of metal salts. Starting materials for further syntheses and for biologically active compounds may be obtained by subsequent dehydrobromination of the addition products.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: May 10, 1977
    Assignee: BASF Aktiengesellschaft
    Inventor: Walter Boell
  • Polyurethane foams resistant to discoloration
    Patent number: 4021385
    Abstract: Polyether polyols may be synergistically stabilized against oxidation by incorporating therewith 4,4'-bis(alphadimethylbenzyl) diphenyl amine and a 2,6-di-t-butyl-4-(lower alkyl) phenol such as 2,6-di-t-butyl-4-methyl phenol or 2,6-di-t-butyl-4-butyl phenol. The stabilized polyols inhibit color formation when employed in the preparation of polyurethane foams.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: May 3, 1977
    Assignee: BASF Wyandotte Corporation
    Inventors: Arthur L. Austin, William W. Levis, Jr., John T. Patton, Jr.
  • Manufacture of work-hardened wires and profiles
    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
  • Production of wood glue
    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
  • Production of 1-alkyl-5-nitroimidazoles
    Patent number: 4021442
    Abstract: 1-Alkyl-5-nitroimidazoles are prepared by reacting a 5-nitroimidazole with an alkylating agent in the presence of an aliphatic carboxylic acid. The products are intermediates for the production of dyes, textiles auxiliaries and insecticides.
    Type: Grant
    Filed: March 11, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Anton Frank, Helmut Karn, Toni Dockner
  • Herbicides
    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
  • Herbicide
    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
  • Regeneration and separation of rhodium-containing or iridium-containing catalysts from distillation residues following hydroformylation
    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
  • Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)]dicarboxylic acid esters
    Patent number: 4021408
    Abstract: New bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters which are starting materials for the manufacture of dyes, pesticides and additives for plastics, especially stabilizers for polyolefins and polyamides, and are themselves stabilizers, aging retardants or antioxidants for organic products.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: May 3, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Horn, Gernot Teege, Werner Fliege, Frank Weiss, Bernd Meissner
  • Manufacture of 2,6,6-trimethyl-cyclohex-2-en-1-one
    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
  • Thiol carbamates
    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
  • Quiet and smokeless flaring of off-gases containing hydrocarbons
    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
  • Production of 2-hydroxynaphthalene-3-carboxylic acid
    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
  • Extrudable foamable composition comprising an olefin polymer, a styrene polymer and a hydrogenated styrene butadiene block copolymer
    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
  • Tin titanium complexes as esterification/transesterification catalysts
    Patent number: 4020010
    Abstract: Complexes of stannous carboxylate and tetraalkyl titanate are effective esterification and transesterification catalysts.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: April 26, 1977
    Assignee: BASF Wyandotte Corporation
    Inventors: Herwart C. Vogt, Manher Parekh, John T. Patton, Jr.
  • Coated magnetic recording media
    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
  • Process for the preparation of polyester polyols
    Patent number: 4018815
    Abstract: Polyester polyols are prepared by the reaction of a polycarboxylic acid or anhydride with a polyhydric alcohol employing in an initial step a stoichiometric excess of polycarboxylic acid or anhydride, thereafter removing between 90 to 95% of the water of esterification, adjusting the stoichiometry of the reaction by addition of polyhydric alcohol, and continuing the esterification reaction until a polyester polyol having an acid number of less than two is obtained. The process allows for an increase in reactor capacity without equipment modification at the same cycle times and a decrease in side product formation.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: April 19, 1977
    Assignee: BASF Wyandotte Corporation
    Inventors: Herwart C. Vogt, John T. Patton, Jr.
  • Tape transport apparatus
    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
  • Tin-titanium complexes as esterification/transesterification catalysts
    Patent number: 4018708
    Abstract: Complexes of quadrivalent organotin and quadrivalent organotitanium compounds are effective esterification and transesterification catalysts.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: April 19, 1977
    Assignee: BASF Wyandotte Corporation
    Inventors: Herwart C. Vogt, Manher Parekh, John T. Patton, Jr.