Patents Assigned to BASF
  • Magnetic recording media
    Patent number: 4357378
    Abstract: The invention relates to magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment and a special binder mixture. This binder mixture consists essentially of 20 to 90 percent by weight of an elastomeric polyurethane which is soluble in a volatile organic solvent, is practically free of isocyanate groups and has been obtained from a linear, aliphatic polyester or polyether and a diisocyanate of 6 to 24 carbon atoms, and of 10 to 80 percent by weight of a vinyl chloride copolymer which contains 50 to 90 percent by weight of vinyl chloride units and 10 to 50 percent by weight of units of one or more diesters of maleic acid with an alcohol of 1 to 3 carbon atoms, or of the reaction product of this binder mixture with a polyisocyanate of 6 to 50 carbon atoms.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: November 2, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Vaeth, Rudolf Bachmann, Werner Senkpiel, Hans-Joerg Hartmann, Roland Falk, Herbert Motz
  • Laminate useful for the production of printing plates and relief plates
    Patent number: 4357414
    Abstract: A laminate suitable for the production of printing plates and relief plates, and possessing a photosensitive layer, which is soluble in water or in an aqueous solution, and contains a hydrophilic polymeric binder, applied to a base, contains, between the base and the photosensitive layer, an intermediate layer which consists of a mixture of a polymeric binder compatible with the polymeric binder of the photosensitive layer, and a diacrylate or dimethacrylate monomer which contains urethane groups and is obtained by reacting a hydroxyalkyl acrylate or hydroxyalkyl methacrylate with a diisocyanate. After application to the base, the intermediate layer is cured at 110.degree.-220.degree. C. before the photosensitive layer is applied.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: November 2, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich Hartmann, Gerhard Hoffmann, Werner Lenz
  • Process for threading up a rapidly travelling thread in a texturizing nozzle
    Patent number: 4356604
    Abstract: A process for introducing one or more threads into a texturizing nozzle, in which the texturizing nozzle, together with the inlet member, is first brought into a position in which the thread is led transversely past and in the immediate vicinity of the texturizing nozzle, the thread is sucked against the nozzle with the orifice of the inlet member enlarged, immediately after being sucked against the texturizing nozzle the thread is cut beyond the nozzle so that the cut end is sucked back into the nozzle, the suction supply required for the sucking-in is replaced by pressurized fluid texturizing medium, and the cross-section of the inlet orifice of the texturizing device is reduced to a value advantageous for steady state operation.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: November 2, 1982
    Assignee: BASF Farben & Fasern AG
    Inventors: Wolfgang Martin, Hans Knopp, Dieter Herion, Gerhard Conzelmann, Guenter Leuchtmann, Peter Gujer, Dieter Guldenfels, Armin Wirz
  • Sparingly soluble isoinodoline colorants
    Patent number: 4356123
    Abstract: Sparingly soluble isoindoline colorants of the formula ##STR1## where R is carbamyl, N-C.sub.1 -C.sub.4 -alkylcarbamyl or N-phenylcarbamyl and Q is a group of the formula ##STR2## where A is 1,3- or 1,4-phenylene and the ring B is 1,2-phenylene, 1,2-naphthylene or 2,3-naphthylene and R has the above means, and where the phenyl radicals in R, A and B independently of one another may be unsubstituted or substituted by groups which do not confer solubility.The colorants I may be used as pigments and for coloring finishes, printing inks and plastics.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: October 26, 1982
    Assignee: BASF Aktiengesellschaft
    Inventor: Wolfgang Lotsch
  • Preparation of aliphatic isocyanates
    Patent number: 4354979
    Abstract: Organic isocyanates are prepared by thermal decomposition of N,N'-disubstituted allophanic acid esters in an organic carbonate at from 150.degree. to 400.degree. C.The isocyanates obtainable by this process are valuable starting materials for the preparation of crop protection agents, pesticides, dyes, synthetic resins, plastics, textile waterproofing agents, detergents, bleaching agents and adhesives.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: October 19, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Volker Schwendemann, Dietrich Mangold
  • Laminate useful for the production of printing plates and relief plates
    Patent number: 4355093
    Abstract: A laminate suitable for the production of printing plates and relief plates, and possessing a photosensitive layer, which is soluble in water or in an aqueous solution, and contains a hydrophilic polymeric binder, applied to a base, contains, between the base and the photosensitive layer, an intermediate layer which consists of a mixture of a polymeric binder which is compatible with the polymeric binder of the photosensitive layer and contains at least 30% by weight of a reaction product of a polyvinyl alcohol with acrylic anhydride and/or methacrylic anhydride, with at least one monomer which is compatible therewith and selected from the group consisting of the hydroxyalkyl acrylates and methacrylates and the diacrylates and dimethacrylates containing urethane groups. After application to the base, the intermediate layer is cured at 110.degree.-220.degree. C. before the photosensitive layer is applied.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: October 19, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich Hartmann, Gerhard Hoffmann, Werner Lenz, John Lynch, Herbert Naarmann
  • Thickening aqueous systems with alpha-olefin oxide-modified liquid polyether thickeners
    Patent number: 4354956
    Abstract: New liquid thickeners for aqueous liquids are obtained by capping a liquid straight chain polyoxyalkylene compound derived from ethylene oxide or ethylene oxide and at least one other lower alkylene oxide by reacting said alkylene oxides with at least one active hydrogen-containing initiator having only one active hydrogen atom. The new thickeners are prepared at a molecular weight of about 1000 to about 25,000 utilizing an alpha-olefin oxide having a carbon chain of about 12 to about 18 aliphatic carbon atoms. Both block and heteric polyoxyalkylene compounds are useful. Alternatively, the new thickeners can be made by copolymerizing ethylene oxide or mixed lower alkylene oxides in the presence of said alpha-olefin oxide. The new thickeners exhibit an unexpected increase in viscosity in aqueous systems as compared with prior art liquid polyether thickening agents.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: October 19, 1982
    Assignee: BASF Wyandotte Corporation
    Inventor: Ronald L. Camp
  • Dye mixtures
    Patent number: 4354969
    Abstract: Dye mixtures which contain dyes of the formula I ##STR1## where R.sup.1 and R.sup.2 have the following meanings:______________________________________ Dye R.sup.1 R.sup.2 ______________________________________ 1 C.sub.2 H.sub.4 OH (CH.sub.2).sub.3 OC.sub.2 H.sub.4 OC.sub.6 H.sub.5 2 (CH.sub.2).sub.3 OC.sub.2 H.sub.4 OC.sub.6 H.sub.5 C.sub.2 H.sub.4 OH 3 (CH.sub.2).sub.3 O(CH.sub.2).sub.4 OH H 4 H (CH.sub.2).sub.3 O(CH.sub.2).sub.4 OH.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: October 19, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Henning, Bertold Honigmann, Gunther Lamm
  • Preparation of primary aromatic amines from cyclic alcohols and/or ketones
    Patent number: 4355180
    Abstract: Aromatic amines, in particular substituted amines, are obtained from corresponding alicyclic alcohols or ketones, in one step, by amination and dehydrogenation with ammonia in the presence of hydrogen and of a palladium catalyst which also contains zinc or cadmium.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: October 19, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Goetz, Leopold Hupfer, Werner Hoffmann, Manfred Baumann
  • Amino derivatives of 2-methyl-5-(2-hydroxystyryl)-1,3,4-thiadiazole, their preparation, and formulations containing these compounds
    Patent number: 4353917
    Abstract: Novel aminopropanol derivatives of 2-methyl-5-(2-hydroxystyryl)-1,3,4-thiadiazole and their addition salts with acids, their preparation, pharmaceutical formulations containing these compounds, and their use as drugs in the treatment of coronary heart disease, hypertonia and cardiac arrhythmias.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Fritz-Frieder Frickel, Peter C. Thieme, Albrecht Franke, Helmut Hagen, Dieter Lenke, Josef Gries
  • 4-(2,5-Dihydroxyphen-1-yl)-crotonic acid and its derivatives, and the preparation of these compounds
    Patent number: 4353836
    Abstract: 4-(2,5-Dihydroxyphen-1-yl)-crotonic acid and its derivative (I) ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each H or C.sub.1 -C.sub.8 -alkyl, R.sup.5 is H, C.sub.1 -C.sub.30 -alkyl or C.sub.2 -C.sub.30 -alkenyl, and R' is H or an organic radical which can be split off hydrogenolytically, and a process for the preparation of the compounds I, wherein a hydroquinone II ##STR2## is reacted, in the presence of from 0.1 to 2 moles of a Lewis acid per mole of II, with(a) a vinylglycolic acid derivative IIIa ##STR3## or (b) a crotonic acid derivative IIIb ##STR4## where X is halogen, hydroxyl or C.sub.1 -C.sub.4 -alkoxy or acyloxy.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Horner, Axel Nissen
  • Cationic dyes
    Patent number: 4353833
    Abstract: Compounds of the general formula I ##STR1## where the radicals A, A.sup.1 and B are identical or different andA is unsubstituted or substituted benzene or heteroaromatic,A.sup.1, if n=1, is unsubstituted or substituted heteroaromatic or is aryl which is unsubstituted or substituted by alkyl, aryl, cycloalkyl, chlorine, bromine, hydroxyl, alkoxy, aryloxy, nitro, hydroxycarbonyl, alkoxycarbonyl, or aminocarbonyl, and, if n>1, A.sup.1 may also be aryl substituted by unsubstituted or substituted amino,B is a bridge member of the formula ##STR2## B.sup.1 is a bridge member which may or may not be quaternized, R.sup.1 and R.sup.2 are hydrogen, unsubstituted or substituted alkyl, cycloalkyl, aryl, alkoxy or amino,n is an integer equal to or greater than 1 andX.sup..theta. is an anion.The compounds according to the invention are preferably used for coloring paper pulp.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Bruder, Hans-Juergen Degen, Franz Feichtmayr, Klaus Grychtol, Udo Mayer
  • Continuous preparation of polycaprolactam in vertical tubular reactor
    Patent number: 4354020
    Abstract: A process for the continuous preparation of polycaprolactam, which comprises polymerizing .epsilon.-caprolactam in a vertical tubular reactor through which the .epsilon.-caprolactam flows downward, wherein the .epsilon.-caprolactam is partially polymerized, at a nylon-forming temperature, in a mechanically mixed zone, the reaction mixture is circulated through a heat exchange zone in the lower part of the mechanically mixed reaction zone, and is polymerized further, in additional heat exchange zones, until the desired degree of polymerization is reached, and poly-.epsilon.-caprolactam is then discharged as a melt, and an apparatus for carrying out the process.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudi-Heinz Rotzoll, Paul Matthies, Guenter Valentin, Werner Hoerauf
  • Substituted 3-aminopyrazoles
    Patent number: 4354031
    Abstract: New and valuable pyrazole derivatives having a good herbicidal action, herbicides containing these compounds as active ingredients, and processes for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: October 12, 1982
    Assignee: BASF Atiengesellschaft
    Inventors: Peter Plath, Bruno Wuerzer, Wolfgang Rohr
  • Phenylpiperazine derivatives of 1,3,4-oxadiazolylphenols, and therapeutic agents containing these compounds
    Patent number: 4353904
    Abstract: Novel phenylpiperazinylpropanols of 1,3,4-oxadiazolylphenols and their physiologically tolerated addition salts with acids, processes for their preparation, and pharmaceutical formulations which contain these compounds and are useful in the treatment of hypertonia.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter C. Thieme, Albrecht Franke, Dieter Lenke, Hans D. Lehmann, Josef Gries
  • 3,4,5,6-Tetrahydro-1,2,4,6-thiatriazine-3,5-dione-1,1-dioxides; processes for controlling undesired plant growth
    Patent number: 4353732
    Abstract: 3,4,5,6-Tetrahydro-thiatriazine-3,5-dione-1,1-dioxides of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given in the main text, which possess herbicidal properties.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf-Dieter Acker, Gerhard Hamprecht, Adolf Parg, Bruno Wuerzer
  • Preparation of formaldehyde
    Patent number: 4354045
    Abstract: Formaldehyde is prepared by dehydrogenation of methanol in the presence of a catalyst containing copper, zinc and tellurium, at from 300.degree. to 750.degree. C.The formaldehyde obtainable by the process of the invention is a disinfectant, tanning agent, reducing agent and valuable starting material for the preparation of synthetic resins, adhesives, plastics and auxiliaries in numerous sectors of industry.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: October 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Merger, Gerd Fouquet
  • Carbonate and carboxylic acid ester group-containing non-ionic surface-active agents
    Patent number: 4353834
    Abstract: Biodegradable non-ionic surface-active agents containing carbonate groups can be prepared by reacting hydrophilic polyoxyalkylene glycols derived from the same or different alkylene oxides with hydrophobic amides or sulfonamides. The compositions of the invention contain both hydrophilic and hydrophobic groups in the molecule making them suitable for use as surface-active agents.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: October 12, 1982
    Assignee: BASF Wyandotte Corporation
    Inventor: William K. Langdon
  • Novel aliphatic sulfosiloxane-silicate copolymers
    Patent number: 4354002
    Abstract: Sulfosiloxane-silicate copolymers are useful corrosion inhibitors in alcohol-based antifreeze compositions. The aliphatic sulfosiloxane-silicate copolymers contain repeating units derived from aliphatic sulfosiloxanes and water-soluble silicates.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: October 12, 1982
    Assignee: BASF Wyandotte Corporation
    Inventors: Pauls Davis, Joe C. Wilson
  • Polyurethane foam - fabric composite
    Patent number: 4353955
    Abstract: The present invention is directed to a method of applying a polyurethane foam to a fabric and the product produced thereof. This method involves:(a) coating the fabric with a silicone surfactant, and(b) expanding the polyurethane foaming mixture in contact with the coated portion of the fabric.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: October 12, 1982
    Assignee: BASF Wyandotte Corporation
    Inventor: John H. Cook