Patents Assigned to BASF
  • Preparation of s-triazine derivatives
    Patent number: 4656272
    Abstract: s-Triazine compounds which can be used as sunscreen agents are prepared in a technically simpler manner by a process in which an ester of a branched alkanoic acid with a saturated aliphatic alcohol or, if appropriate, a mixture of such alcohols is used as the solvent in the reaction of a cyanuric halide with a p-aminobenzoate.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Roland Martin, Lothar Janitschke
  • Increasing the enteral absorbability of heparin or heparinoids
    Patent number: 4656161
    Abstract: An enterally absorbable heparin or heparinoid preparation contains a non-ionic surfactant.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventor: Dieter Herr
  • Preparation of riboflavin, and 4,5-dimethyl-N-(D)-ribityl-2-(O-alkoxyphenylazo)-aniline intermediates
    Patent number: 4656275
    Abstract: An improved process for the preparation of riboflavin by condensation of a 4,5-dimethyl-N-(D)-ribityl-2-phenylazoaniline derivative with barbituric acid in the presence of an acidic condensing agent in an organic solvent, wherein a 4,5-dimethyl-N-(D)-ribityl-2-(o-alkoxyphenylazo)-aniline of the formula IIa ##STR1## where R is alkyl of 1 to 4 carbon atoms, in particular methyl, is reacted with barbituric acid, as well as the novel intermediates of the formula IIa.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Hansgeorg Ernst, Heinz Eckhardt, Joachim Paust
  • Preparation of substituted piperidines
    Patent number: 4656282
    Abstract: Piperidines substituted in the 3- and/or 4-position are prepared by reacting a glutardialdehyde substituted in the 2- and/or 3-position with ammonia or a primary amine and hydrogen at elevated temperature and under superatmospheric pressure in the presence of a hydrogenation catalyst.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Himmele, Walter-Wielant Wiersdorff, Marco Thyes
  • Rotary drum vacuum filter for easily eroded cakes
    Patent number: 4655937
    Abstract: Disclosed is an improved rotary drum vacuum filter that is especially useful in the filtration of particulates that form an easily eroded cake. The improved filter utilizes sprayers and a spray blocking means to achieve an unexpectedly efficient rinse of the cake.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: April 7, 1987
    Assignee: BASF Corporation
    Inventor: David C. Hendrix
  • Method and circuit arrangements for detecting and evaluating faults in recording media having digital signals recorded on one or more tracks
    Patent number: 4656420
    Abstract: A method and circuit arrangements for detecting and evaluating dropouts or drop-ins on recording media, comprising reading and modifying the recorded digital signals, the size and type of fault being evaluated on the basis of fixed threshold levels. In the case of a dropout, for example, the fault is weighted by determining the differential of the envelope of the read signal. In the case of a drop-in, other noise signals are left out of consideration by nonlinear emphasis of the drop-in and appropriate choice of the threshold value. A circuit combination enables both dropouts and drop-ins to be detected and evaluated.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Felleisen, Aribert Krug, Peter Grosshans
  • Molded catalyst for reactions carried out under heterogeneous catalysis
    Patent number: 4656157
    Abstract: A molded catalyst for reactions carried out under heterogeneous catalysis consists of a catalytically active material shaped into hollow cylinders, or of an inert carrier which is shaped into hollow cylinders and onto which catalytically active material is applied the external diameter of the hollow cylinders being from 3 to 20 mm, the internal diameter being from 0.1 to 0.7 times the external diameter and the length being from 0.2 times to twice the external diameter. The end faces of the hollow cylinder are curved so that the radius of curvature is from 0.4 to 5 times the external diameter.The novel catalysts are particularly useful for partial oxidation in the gas phase.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Friedbert Hofmann, Richard Krabetz, Matthias Schwarzmann
  • Benzoazoresorcinol dyes containing a quaternized aminoalkylene oxycarbonyl group
    Patent number: 4656256
    Abstract: Compounds of the formula ##STR1## where Y is chlorine or bromine, Z is hydrogen, chlorine, bromine, a sulfonic ester group, nitro or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may not be interrupted by oxygen, ##STR3## m is 1 or 2, n is 0 or 1, p is 0, 1 or 2, q is 1 or 2, R.sup.1 and R.sup.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl or aryl, or R.sup.1 and R.sup.2, together with the nitrogen atom, form a heterocyclic structure, R.sup.3 is hydrogen or unsubstituted or substituted alkyl, B is hydrogen or C.sub.1 -C.sub.4 -alkyl, B.sup.1 is hydrogen, hydroxyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl, A.sup.- is an anion, R.sup.4 is unsubstituted or substituted alkyl, R.sub.5 is hydrogen or C.sub.1 -C.sub.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Colberg, Hans-Juergen Degen, Johannes P. Dix
  • s-Triazine-radical-containing polyether polyol mixtures, process for their preparation and their use
    Patent number: 4656201
    Abstract: The invention relates to s-triazine radical-containing polyether polyol mixtures having functionalities of from 2 to 6 and hydroxyl numbers of from 210 to 640, prepared by the oxyalkylation of a mixture of one or more polyamino-1,3,5-triazines, preferably melamine, and an alkanol having a hydroxyl functionality of from 2 to 6 and having 2 to 18 carbon atoms, water, or their mixtures, in the absence of catalysts and conventional inert polar solvents. The resulting polyether polyol mixtures are suitable for the preparation of rigid polyurethane, polyisocyanurate, and urethane group-containing polyisocyanuate foams produced by means of the polyisocyanate polyaddition process.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Marx, Joachim Jaehme
  • Tape cassette containing echo-erasing means
    Patent number: 4656548
    Abstract: A tape cassette comprising at least one print-through echo-erasing device in the form of at least one appropriately shaped magnetic member made of permanent magnet material which is conveniently arranged on a tape guide element or near the apertures in the front wall of the cassette housing for the admission of scanning means. Such echo-erasing device can be used with advantage in any kind of magnetic tape cassette or cassette containing a recording medium having at least one magnetic track.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: April 7, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietmar Pfefferkorn, Gerhard Nerschbach, Eberhard Koester, Norbert Kreimes, Bozidar Pavelka
  • Highly dilatant polymer dispersions with reduced temperature dependence of the critical shearing rate
    Patent number: 4654396
    Abstract: A dispersion, having highly dilatant flow, of a carboxyl-containing copolymer of monoolefinically unsaturated monomers, wherein the temperature dependence of the critical shearing rate is greatly reduced by incorporation of from 0.1 to 30% by weight of oxides, hydroxides, carbonates and/or water soluble salts of monovalent or divalent metals.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Richard Bung, Klaus Haas, Martin Laun, Franz Schmidt, Gerhard Welzel
  • Cyclohexane-1,3-dione derivatives and their use for controlling undesirable plant growth
    Patent number: 4654073
    Abstract: Cyclohexane-1,3-dione derivatives of the formula ##STR1## where A is tetrahydropyran-4-yl, 3-methyltetrahydropyran-4-yl, 1,4-dioxanyl, 5,5-dimethyl-1,3-dioxan-2-yl, 2,5-dimethyl-1,4-dioxan-3-yl, 2,6-dimethyl-1,4-dioxan-3-yl, 2-methyl-1,3-dithiolan-2-yl, 2,6-dimethyltetrahydrothiopyran-3-yl, 2-methyl-1,3-dithian-2-yl or unsubstituted or substituted 1,3-dioxepan-5-yl, R.sup.1 is hydrogen or methoxycarbonyl, R.sup.2 is alkyl and R.sup.3 is alkyl, alkenyl, haloalkenyl or propargyl, are used for controlling undesirable plant growth of grass species, especially in broadleaved crops and monocotyledon crops which do not belong to the grass family.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: March 31, 1987
    Assignee: Basf Aktiengesellschaft
    Inventors: Dieter Jahn, Rainer Becker, Michael Keil, Winfried Richarz, Hardo Siegel, Wolfgang Spiegler, Bruno Wuerzer
  • Continuous removal of the catalyst from polyphenylene ethers
    Patent number: 4654418
    Abstract: The catalyst is removed in the preparation of high molecular weight polyphenylene ethers from monohydric phenols, which are alkyl-substituted at the two ortho-positions but not at the para-position and may or may not be alkyl-substituted at the meta-position, by an oxidative coupling reaction with oxygen at from 15.degree. to 50.degree. C.
    Type: Grant
    Filed: July 5, 1984
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Rosemarie Berger, Hermann Dreher, Juergen Hambrecht, Eduard Heil, Rudi W. Reffert, Johann Swoboda, Adolf Echte, Peter Siebel
  • Preparation of polymer dispersions which form block-resistant films
    Patent number: 4654397
    Abstract: A process for the preparation of aqueous polymer dispersions which have a low film-forming temperature but still give films having a high block resistance, and the use of these polymer dispersions as binders for coating materials.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Mueller-Mall, Michael Melan, Eckehardt Wistuba, Lothar Matthaei
  • p-Alkoxycyclohexylalkanols and p-alkoxycyclohexylalkyl esters and their use as scents
    Patent number: 4654167
    Abstract: p-Alkoxycyclohexylalkanols and their esters of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.7 -alkyl, in particular tert.-butyl, or is cyclohexyl, R.sup.2 is C.sub.1 -C.sub.3 -alkyl, in particular methyl or ethyl, and R.sup.3 is hydrogen, acetyl, propionyl or butyryl, and scent compositions containing these compounds I and processes for their preparation. The novel compounds have fine woody or sandalwood notes and can be used as scents and as components of scent compositions.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Degner, Walter Gramlich, Werner Hoffmann, Ludwig Schuster
  • Preparation of 2-(hydroxymethyl)-acrylonitrile and 2-(hydroxymethyl)-acrylates
    Patent number: 4654432
    Abstract: 2-(hydroxymethyl)-acrylonitrile and 2-(hydroxymethyl)-acrylates of the formula ##STR1## where X is --CN or ##STR2## and R is unsubstituted or substituted alkyl, are prepared by reacting acrylonitrile or an acrylate with hydrated formaldehyde or a hemiacetal of formaldehyde in the presence of a tertiary amine as a catalyst.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Erwin Hahn, Alexander Kud, Alfred Oftring
  • Desizing cotton and cotton-containing fabrics
    Patent number: 4654043
    Abstract: Cotton and cotton-containing fabrics are desized in strongly alkaline aqueous solution with an alkali metal hypochlorite by a process in which from 0.5 to 8.0 g/l of a tertiary hydroxyalkylamine which is soluble in aqueous alkaline solution, of an oxyethylated and/or oxypropylated ethylenediamine, of an oxyethylated polyethyleneimine, of malonic acid, of cyanuric acid, of a cyanuric acid derivative, of a urea derivative, of cyanoguanidine, of oxazolidone, of pyrrolidone, of N-methylpyrrolidone, of N-methylimidazole or of a mixture of these is added to the aqueous bath, as an activator for the hypochlorite. Activators for hypochlorite are used in the desizing of cotton and cotton-containing fabrics in strongly alkaline aqueous solutions.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Streit, Linda Witt, Heinz-Dieter Angstmann, Rolf Blanckenhorn, Rolf Fikentscher
  • Preparation of iron powder
    Patent number: 4652305
    Abstract: Iron powder is prepared by thermal decomposition of iron pentacarbonyl in a cavity decomposer, with an average amount of from 4 to 8 kg per m.sup.2 per hour of iron carbonyl striking the heating surface, by a process in which the velocity of the inflowing stream is brought to about 0.2-4 kg per m.sup.2 per second of carbonyl vapor or vapor/inert gas mixture by changing the inlet cross-section.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: March 24, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz L. Ebenhoech, Reinhold Schlegel
  • Sulfo-containing halophenylazodiamino, cyano pyridine compounds
    Patent number: 4652633
    Abstract: Compounds useful for dyeing nylon, wool, and leather, having the formula: ##STR1## wherein X.sup.1 is chlorine, bromine, methyl or trifluoromethyl, Y.sup.3 is chlorine or bromine, and K.sup.1 is a radical of the formula ##STR2## where R.sup.3 is C.sub.2 to C.sub.4 hydroxyalkyl, methoxyethyl or methoxypropyl.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: March 24, 1987
    Assignee: BASF Aktiengesellschaft
    Inventor: Gunther Lamm
  • Application of azolylmethyloxiranes for the treatment of viral diseases
    Patent number: 4652580
    Abstract: The application of compounds of the formula ##STR1## where A, B and Z have the meanings stated in the description, for the treatment of viral infections is described.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: March 24, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Janssen, Stefan Karbach, Norbert Meyer, Gerhard Laur