Patents Assigned to BASF
  • HR foams made with reactive polyol compositions having improved stability
    Patent number: 4284728
    Abstract: HR or high resiliency polyurethane foams having improved processing stability are prepared from reactive urethane formation promoting active hydrogen-containing compositions which have been pre-treated with carbon dioxide or a weak acid. The pre-treated active hydrogen-containing composition is, then, reacted with an organic polyisocyante to form the foams hereof.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: August 18, 1981
    Assignee: BASF Wyandotte Corporation
    Inventors: John G. Demou, Edward R. Pray, Robert L. McBrayer
  • Apparatus for treating uremic patients
    Patent number: 4284502
    Abstract: An apparatus for treating uremic patients by means of ultrafiltration, in which the withdrawn blood is separated by means of a hemofilter into plasma water and residual blood and the plasma water is exchanged in an exchange device. The latter comprises two chambers I and II, separated from one another by a flexible or movable partition, of which chamber I is filled with fluid and can additionally receive the plasma water, and chamber II contains substitution solution. By exerting pressure in the partition, a suction is caused in chamber I and a pressure in chamber II, so that chamber I can take up the plasma water, while the same volume of substitution solution is released from chamber II.
    Type: Grant
    Filed: October 24, 1979
    Date of Patent: August 18, 1981
    Assignee: BASF Aktiengesellschaft
    Inventor: Peter Kramer
  • Preparation of 4-acyloxy-2-methyl-crotonaldehydes
    Patent number: 4284796
    Abstract: A process for the preparation of a 4-acyloxy-2-methyl-crotonaldehyde of the formula ##STR1## where R is hydrogen or an aliphatic radical of 1 to 5 carbon atoms, by reacting a 1,1,4-triacyloxy-2-methyl-but-2-ene of the formula ##STR2## where R.sup.1 and R.sup.2 are each hydrogen or an aliphatic radical of 1 to 5 carbon atoms, with water in the presence of a carboxylic acid of the formulaR--COOH III.
    Type: Grant
    Filed: September 25, 1979
    Date of Patent: August 18, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fischer, Hans-Martin Weitz
  • Reductive alkylation of nitrogen heterocycles
    Patent number: 4283534
    Abstract: A process for the preparation of aralkylamines of the formula ##STR1## where R.sup.1 is hydrogen, an aliphatic hydrocarbon radical, a cycloaliphatic radical or alkoxy,R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl,X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are hydrogen or alkyl,A is ##STR2## X.sup.5, X.sup.6, X.sup.7, X.sup.8, X.sup.9 and X.sup.10 are hydrogen or alkyl andn is 2, 3 or 4,by reacting a secondary amine with a carbonyl compound in the presence of hydrogen and of a hydrogenation catalyst which comprises palladium, mixed with zinc, cadmium, manganese and/or a rare earth metal oxide, on an inert carrier.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: August 11, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Goetz, Leopold Hupfer
  • Parabanic acid derivatives
    Patent number: 4283547
    Abstract: New and valuable parabanic acid derivatives having a herbicidal action, herbicides containing these compounds, processes for controlling the growth of unwanted plants with these compounds, and processes for manufacturing these herbicides.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: August 11, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Rainer Becker, Bruno Wuerzer
  • Manufacture of homopolymers and copolymers of .alpha.-monoolefins
    Patent number: 4282341
    Abstract: A process for the manufacture of homopolymers and copolymers of .alpha.-monoolefins by polymerizing the monomer or monomers at relatively low temperatures under relatively low pressures by means of a Ziegler-Natta catalyst comprising (I) a titanium chloride component and (II) an aluminumalkyl component, wherein the titanium chloride component (I) employed is obtained by exposing a conventional catalyst component consisting, or substantially consisting, of titanium trichloride or titanium tetrachloride, to a carbon dioxide atmosphere under specific conditions. Catalysts obtained from titanium chloride components (I) which have been treated in this way exhibit a relatively long induction period.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Klaerner, Gerhard Staiger, Klaus Bronstert
  • Supported catalyst containing vanadium and titanium and/or zirconium for the preparation of phthalic anhydride
    Patent number: 4282116
    Abstract: A supported catalyst, containing vanadium and titanium and/or zirconium, obtained by applying a mixture of finely divided titanium dioxide and/or zirconium dioxide, and a solution or suspension of a vanadium compound, to an inert, non-porous, ring-shaped carrier having an external diameter of from 6 to 10 mm, a length of from 4 to 10 mm and a wall thickness of from 0.5 to 3 mm, the two end faces of the ring-shaped carrier being outwardly beveled at an angle such that the length of the outer cylindrical wall is at least 20% shorter than the length of the inner cylindrical wall.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Reuter, Kurt Blechschmitt, Friedrich Wirth
  • Insecticidal process
    Patent number: 4282238
    Abstract: Insecticidal agents containing, as active ingredients, imidazole derivatives or salts thereof. The imidazole derivatives have the formula ##STR1## where R.sup.1 denotes branched alkyl of 6 to 20 carbon atoms, linear alkyl of 6 to 16 carbon atoms, branched alkenyl of 10 to 20 carbon atoms, linear or branched alkynyl of 3 to 6 carbon atoms, 2-methyl-3-phenylpropyl or 2-methyl-3-phenylpropen-2-yl, phenyl being unsubstituted or mono- or polysubstituted by halogen or alkyl of 1 to 10 carbon atoms, and R.sup.2, R.sup.3 and R.sup.4 denote hydrogen or methyl.These insecticidal agents are suitable as growth regulators and ovicides for controlling insects from the Lepidoptera, Coleoptera, Diptera, Hymenoptera, Heteroptera, Homoptera and Isoptera classes.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Goetz, Anna Steimmig, Bernd Zeeh, Heinrich Adolphi
  • Tri/penta/aza-tetracyclo-dodeca/enes/dienes or diecaenes
    Patent number: 4282027
    Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Platz, Werner Fuchs, Norbert Rieber, Ulf-Rainer Samel, Johann Jung, Bruno Wuerzer
  • Preparation of terpolymers
    Patent number: 4282342
    Abstract: Terpolymers which have Fikentscher K-values of from 8 to 100 and comprise 50 mole percent of maleic anhydride units, from 35 to 45 mole percent of 2,4,4'-trimethylpent-1-ene units and from 5 to 15 mole percent of 2,4,4'-trimethylpent-2-ene units, and processes for their preparation by polymerizing 50 parts by weight of maleic anhydride, from 35 to 180 parts by weight of 2,4,4'-trimethylpent-1-ene and from 0.6 to 6 parts by weight of 2,4,4'-trimethylpent-2-ene per part by weight of 2,4,4'-trimethylpent-1-ene employed, in the presence of a free-radical initiator at from 60.degree. to 200.degree. C. and a pressure of from 1 to 20 bar, and separating the terpolymers from the unconverted monomers.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Claus Cordes
  • Preparation of p-substituted aromatic carbamic acid esters
    Patent number: 4282368
    Abstract: p-Substituted, aromatic carbamic acid esters are prepared by reacting an aromatic carbamic acid ester with an olefin in the presence of an inorganic acid or sulfonic acid.The aromatic carbamic acid esters obtainable by the process of the invention are active ingredients for pesticides and drugs, as well as valuable starting materials for the preparation of such ingredients and of dyes.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Merger, Gerhard Nestler
  • Preparation of methylene-bis-phenylcarbamic acid esters and of polymethylene-polyphenylcarbamic acid esters
    Patent number: 4282370
    Abstract: A process for preparing a methylene-bis-(4-phenylcarbamic acid ester), wherein an N-phenylcarbamic acid ester is reacted with an acylal in the presence of an acid at from 50.degree. to 150.degree. C.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Merger, Gerhard Nestler
  • Diurethanes
    Patent number: 4282369
    Abstract: New and valuable diurethanes having a good herbicidal action, herbicides containing these compounds, and a process for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Wolfgang Rohr, Bruno Wuerzer, Kurt Fett
  • Polymerization process for preparation of acrylamide homopolymers with redox catalyst
    Patent number: 4282340
    Abstract: There is disclosed a process for the aqueous polymerization of acrylamide to produce polymers of high molecular weight utilizing mixtures of water and monomer, at least one of which can be contaminated with small amounts of polymerization inhibiting components. In the process of the invention, a minimum amount of a redox pair catalyst is utilized in order to obtain the desired high molecular weight polymer. The minimum amount of catalyst is automatically provided to the polymerization mixture by adding a first member of a redox pair to the polymerization mixture and intimately combining a second member of the redox pair catalyst with an organic polymer capable of forming a colloidal dispersion in an aqueous medium and adding this intimate mixture to the mixture of water, acrylamide monomer, and a first member of the redox pair catalyst.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: August 4, 1981
    Assignee: BASF Wyandotte Corporation
    Inventors: Michael J. Anchor, Robert Login
  • Preparation of glyoxal from ethylene glycol
    Patent number: 4282374
    Abstract: A process for the preparation of glyoxal by vapor phase oxidation of ethylene glycol with oxygen over a copper-containing oxidation catalyst at an elevated temperature and in the presence of a phosphorus compound which is volatile under the reaction conditions, the amount of phosphorus (calculated as P) being from 1 to 100 ppm, based on the weight of ethylene glycol.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Engelbach, Michael J. Sprague
  • Manufacture of high impact and translucent styrene polymers
    Patent number: 4282334
    Abstract: A process for the manufacture of high impact and translucent polystyrene, in which, in a first stage, styrene is prepolymerized in mass or in solution in the presence of a rubber, and the polymerization is then completed in mass, in solution or in aqueous suspension. The prepolymerization is taken to a stage where the amount of styrene converted is from 3 to 10 times the amount of the elastomer constituent of the rubber, and at this conversion the disperse soft-component phase formed should have a mean particle size of less than 1 .mu.m and should contain from 35 to 65% by weight of free or chemically bonded polystyrene segments. The translucent styrene polymers of high impact strength may be used for packaging purposes.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Walter, Dieter Stein, Gerhard Fahrbach, Rudolf Jung, Adolf Echte
  • Detergents and cleansers containing oxyalkylated alcohols as biodegradable, low-foam surfactants
    Patent number: 4280919
    Abstract: A detergent and cleanser which contains an oxyalkylated alcohol of the formula ##STR1## where R is C.sub.8 -C.sub.18 -alkyl, x is from 2 to 4.5 and y is from 2 to 5, as a low-foam, biodegradable surfactant additive.
    Type: Grant
    Filed: April 29, 1980
    Date of Patent: July 28, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Stoeckigt, Dieter Kiessling, Johannes Perner, Wolfgang Trieselt, Horst Trapp
  • Polyalkylene polyamine ether derivatives of polyoxyalkylene compounds
    Patent number: 4281199
    Abstract: Polyamines are prepared by first reacting a polyoxyalkylene polyol having one to eight active hydrogen sites with an epihalohydrin. The resulting polyether is, then, reacted with an amine to replace the chlorine atoms with amine functions. The polyamines hereof are useful as intermediates for preparing cationic polyelectrolytes, such as drainage aids and the like.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: July 28, 1981
    Assignee: BASF Wyandotte Corporation
    Inventor: William K. Langdon
  • Apparatus for threading up a texturizing nozzle
    Patent number: 4280260
    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: March 29, 1979
    Date of Patent: July 28, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Martin, Hans Knopp, Dieter Herion, Gerhard Conzelmann, Guenter Leuchtmann, Peter Gujer, Dieter Guldenfels, Armin Wirz
  • Basic dyes
    Patent number: 4280964
    Abstract: Basic dyes of the general formulaA-B-A Iwherethe substituents A independently of one another are a radical of the formula ##STR1## and B is a bridge member,and in the formula for AR.sup.1 and R.sup.2 independently of one another are C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted by hydroxyl, C.sub.1 -C.sub.4 -alkoxy, cyano, C.sub.1 -C.sub.4 -alkoxycarbonyl, di-C.sub.1 -C.sub.4 -alkylamino, benzyl-(C.sub.1 -C.sub.4 -alkyl)-amino, chlorine or bromine, or are cyclohexyl, benzyl, phenylethyl or phenyl, orR.sup.1 and R.sup.2 together with the nitrogen are pyrrolidino, piperidino, morpholino or N-methylpiperazino,R.sup.3 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy or nitro,X is oxygen, imino or C.sub.1 -C.sub.4 -alkylimino andalkylene is of 2 to 6 carbon atoms and is straight or branched.The novel dyes are mainly used for dyeing paper pulps.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: July 28, 1981
    Assignee: BASF Aktiengesellschaft
    Inventor: Klaus Grychtol