Patents Assigned to BASF
  • Patent number: 5484901
    Abstract: Isoindolineazo pigments of the general formula I ##STR1## where A is the radical of an active-methylene compound or .dbd.S;L is substituted or unsubstituted 1,4-phenylene, 1,3-phenylene or 1,5-naphthylene;K is the radical of a coupling component K--H; and the benzene ring D is optionally substituted,are useful for pigmenting high polymer organic materials.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: January 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Krapp, Georg Henning
  • Patent number: 5484460
    Abstract: Dye mixtures comprising at least six isochromatic dyes of the formula ##STR1## where D is the radical of a diazo component of the aniline, aminothiophene, aminothiazole, aminoisothiazole or aminobenzisothiazole series andone of the radicals X.sup.1 and X.sup.2 is amino and the other is a radical of the formula ##STR2## where L is unsubstituted or substituted C.sub.2 -C.sub.8 -alkyleneR.sup.1 is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl andR.sup.2 is hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenyl, or C.sub.1 -C.sub.8 -alkanoyl,and the use thereof for dyeing or printing textile materials, and dye mixtures comprising thienylazopyridine dyes and anthraquinone dyes and the use thereof for dyeing or printing textile materials.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: January 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Loeffler, Gunther Lamm, Volker Bach, Arno Lange, Helmut Reichelt, Herbert Rothmaier
  • Patent number: 5484628
    Abstract: Acicular cobalt-containing magnetic iron oxides having a high coercive force and a core/shell structure and hence low temperature dependence of the coercive force are prepared by a process in which, in a first stage, surface activation is effected by means of iron(II) and cobalt ions under alkaline conditions on the iron oxide core under an inert gas atmosphere and thereafter, in a second stage, an epitactic coating of cobalt ferrite is applied, which coating is formed oxidatively from iron (II) and cobalt (II) hydroxide, likewise under alkaline reaction conditions. The total amount of cobalt ions used for doping remains unchanged compared with the known doped iron oxides or is even smaller. In the second process stage, the achievable coercive force can be controlled by the proportion of air in the gas mixture during the formation of the epitactic coating.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: January 16, 1996
    Assignee: BASF Magnetics GmbH
    Inventors: Ekkehard Schwab, Ronald J. Veitch, Reinhard Korner, Emil Pfannebecker, Bernd Hoppner
  • Patent number: 5484684
    Abstract: Flexible printing plates are produced from printing plates consisting essentially of a dimensionally stable substrate (1) and a recording layer (2) by a process in which the printing plate is produced alternatively either by photochemical or by mechanical structuring, and in the case of photochemical structuring the photosensitive recording layer (2) is exposed imagewise and the unexposed parts of the recording layer (2) are washed out with a developer and in the case of mechanical structuring the originally photosensitive, uniformly exposed recording layer (2) is cut imagewise and the nonprinting parts of the recording layer (2) are peeled off from the substrate (1).The printing plates produced by this process are suitable for the production of products printed by the flexographic method and for lacquering products printed by the offset method.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: January 16, 1996
    Assignee: BASF Lacke & Farben
    Inventors: Thomas Telser, Heinz-Ulrich Werther, Manfred Zuerger
  • Patent number: 5484827
    Abstract: The invention provides UV-stabilizer concentrates, which, relative to the total weight, consist ofA) 40 to 80 weight-% of at least one thermoplastic polyurethaneB) 10 to 30 weight-% 1,3,5-tri-glycidyl-isocyanurate andC) 10 to 30 weight-% 2-(2-hydroxy-3,5,-di-tert-amyl-phenyl)-2H-benzotriazole and/or 1,6-hexane-di-yl-bis-(3-(3-benzotriazole-N-yl)-4-hydroxy-5-tert-butyl)-phe nyl-propanoate.The invention also discloses a process for their production, and their utilization to stabilize TPU against UV- and thermal-degradation.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: January 16, 1996
    Assignee: BASF Elastogran GmbH
    Inventors: Frank Prissok, Friedhelm Lehrich, Gerhard Lehr, Aleksander Glinka, Douglas J. Harrop
  • Patent number: 5484457
    Abstract: Process for the continuous production of surface dyeings on cellulose fiber textile materials, characterized in that the textile materials are treated with an aqueous liquor containing at least 5 g/l of benzyl halide quaternized condensation products of precondensates of trialkanolamines and ureas, cyclic carbonates and/or epihalohydrins and/or benzyl chloride quaternized condensation products of piperazine and epichloronydrin, and 0.02 to 1 g/l of a phosphoric triester whose alcohol component has 6 to 18 carbon atoms, the textile materials thus treated are then dyed in another bath with reactive dyes in an aqueous medium and the dyes are fixed by treatment with an alkaline aqueous liquor and the dyeing finished in conventional manner. The individual cellulose fibers of the textile material are not completely penetrated by the dye but, on the contrary, exhibit ring dyeing.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: January 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg Schulze, Harald Schlueter, Kurt Bacher, Wolfgang Schrott, Erich Kromm
  • Patent number: 5484916
    Abstract: In a process for the preparation of polyisocyanates containing uretdione groups by catalytic dimerization of monomeric isocyanates, the catalysts employed are polymers carrying imidazole groups.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: January 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Roland Minges, Christian Schade
  • Patent number: 5484938
    Abstract: The preparation of 1-hydroxyimidazoles of the formula I ##STR1## where the R radicals can be identical or different and are each halogen or an organic radical, it also being possible for vicinal radicals to be connected to form an aromatic or nonaromatic ring of from 3 to 12 carbon atoms, and n is from 0 to 3, entails reacting an imidazole of the formula II ##STR2## where Q is preferably hydrogen or, especially where R is not halogen, an alkali metal or alkaline earth metal cation, with an organic peroxide.The 1-hydroxyimidazole and its halogen substituted derivatives of the formula I and the acid addition salts thereof are valuable intermediates for organic syntheses.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: January 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulf Baus, Wolfgang Reuther
  • Patent number: 5482983
    Abstract: Flameproofed thermoplastic molding materials containA) from 10 to 98.45% by weight of a thermoplastic polyamide,B) from 1 to 30% by weight of phosphorus,C) from 0.5 to 30% by weight of an elastomeric polymer,D) from 0.05 to 15% by weight of a polyethylene having a density of from 0.94 to 0.98 g/cm.sup.3 or of a polypropylene having an average molecular weight M.sub.w of from 100,000 to 2,000,000 or a mixture thereof andE) from 0 to 60% by weight of a fibrous or particulate filler.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Petra Baierweck, Brigitte Gareiss, Christoph Plachetta, Hans-Peter Beringer
  • Patent number: 5483005
    Abstract: A process for preparing (meth)acrylate polymers with lateral non-linear optical chromophores and molecular weights of from 5000 to 500,000, comprises reacting polymers of (meth)acryloyl isocyanate in solution with D-.omega.-hydroxyalkyl chromophores of the formula (I) ##STR1## where D is an electron donor,A is an electron acceptor,R.sup.1, R.sup.2, R.sup.3 and R.sup.4 can be identical or different and are each H, alkyl, cycloalkyl, alkoxy or R.sup.3 and R.sup.4 are each CN, NO.sub.2 or CHO or R.sup.1 and R.sup.2, or R.sup.3 and R.sup.4, together form a fused-on ring,X is CH and/or Nandm is an integer from 2 to 11.The products are suitable for optical components in communications technology.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Etzbach, Stefan Beckmann
  • Patent number: 5482985
    Abstract: Flameproofed thermoplastic polyamide molding materials containA) from 40 to 98% by weight of a thermoplastic polyamide,B) from 0.5 to 30% by weight of melamine cyanurate,C) from 0.5 to 50% by weight of magnesium hydroxide,D) from 1 to 50% by weight of a fibrous or particulate filler or of a mixture thereof which differs from B) and C) andE) from 0 to 30% by weight of conventional additives or processing assistants.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Petra Baierweck, Brigitte Gareiss, Karlheinz Ulmerich, Michael Gall, Manfred Koetting
  • Patent number: 5483004
    Abstract: The present invention relates to an acrylate copolymer containing amino groups, carboxyl groups and, if appropriate, hydroxyl groups which is characterized in that it has been produced by preparing an acrylate copolymer containing amino groups and, if appropriate, carboxyl groups, by means ofA) free-radical solution polymerization, using azo initiators at temperatures from 80.degree. to 150.degree. C., ofa.sub.1) 1 to 20% by weight of vinylimidazole and/or dimethylaminopropylmethacrylamide,a.sub.2) 0 to 50% by weight of one or more monomers containing hydroxyl groups,a.sub.3) 0 to 50% by weight of one or more monomers containing carboxyl groups, anda.sub.4) 30 to 85% by weight of at least one further ethylenically unsaturated copolymerizable monomer,the total of the proportions by weight of the components a.sub.1 to a.sub.4 always being 100% by weight, and the proportions by weight of the components a.sub.2 and a.sub.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: January 9, 1996
    Assignee: BASF Lacke + Farben AG
    Inventors: Peter Hoffmann, Michael Brunnemann
  • Patent number: 5482998
    Abstract: Thermoplastic molding materials containA) 4-94% by weight of a partly aromatic, semicrystalline copolyamide having a triamine content of less than 0.5% by weight and composed of(A.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine,(A.sub.2) 0-50% by weight of units derived from .epsilon.-caprolactam,(A.sub.3) 0-80% by weight of units derived from adipic acid and hexametheylenediamine and(A.sub.4) 0-40% by weight of further polyamide-forming monomers,the amount of components (A.sub.2) or (A.sub.3) or (A.sub.4) or of mixtures thereof being not less than 10% by weight,B) 4-94% by weight of a polyolefin homo- or copolymer or a mixture thereof,C) 2-20% by weight of an adhesion promoter,D) 0-20% by weight of a toughening polymer andE) 0-60 % by weight of additives and processing assistants.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Muehlbach, Petra Baierweck, Wolfgang F. Mueller, Gerd Blinne, Gerhard Ramlow
  • Patent number: 5482597
    Abstract: In a process for purifying crude (meth)acrylic acid, the crude (meth)acrylic acid is worked up by distillation after addition of an organic carboxylic acid hydrazide and, if desired, an organic sulfonic acid.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Herbst, Gerhard Nestler, Jerry Darlington, Hans Martan
  • Patent number: 5483002
    Abstract: Propylene polymers containA) a semicrystalline propylene homopolymer having a melting point of 125 to 165.degree. C. and a glass transition temperature which is greater than -10.degree. C. andB) a semicrystalline propylene homopolymer having a melting point below 130.degree. C. and a glass transition temperature which is less than or equal to -10.degree. C. or a non-crystallizing propylene homopolymer having a glass transition temperature which is less than or equal to -10.degree. C.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Seelert, Franz Langhauser, Jurgen Kerth, Patrik Muller, David Fischer, Gunther Schweier
  • Patent number: 5480897
    Abstract: The use of nicotinic anilide derivatives of the general formula ##STR1## where the substituents have the following meanings: R.sup.1 halogen, methyl, trifluoromethyl, methoxy, methylthio, methylsulfinyl, methylsulfonylR.sup.2 unsubstituted or halogen-substituted alkyl, unsubstituted or halogen-substituted alkenyl, alkynyl, unsubstituted or halogen-substituted alkoxy, unsubstituted or halogen-substituted alkenyloxy, alkynyloxy, cycloalkyl, cycloalkenyl, cycloalkyloxy, cycloalkenyloxyfor combating Botrytis, and nicotinic anilides of the formula I.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: January 2, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Eicken, Norbert Goetz, Albrecht Harreus, Eberhard Ammermann, Gisela Lorenz, Harald Rang
  • Patent number: 5481426
    Abstract: A cassette with a recording medium, in particular a magnetic recording medium, is designed with a displaceable identification part which can be pushed into the cassette housing. For this purpose, a web is provided behind a cassette opening in a cassette wall, which web runs at an angle with respect to the cassette wall. It is also possible to provide a web which is approximately parallel to the cassette wall, and the identification part, designed as a slide, is provided with a front beveling, in the opening sliding direction, in order to push the slide partially past the edge of the cassette wall located in the opening direction. The cassette can be used for recording/reproducing signals of any type, and any functions of the associated cassette apparatus can be controlled indirectly by the positionally displaceable identification part.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: January 2, 1996
    Assignee: BASF Magnetics GmbH
    Inventors: Klaus Schoettle, Juergen Dreyer, Bozidar Pavelka, Kurt Schmidts
  • Patent number: 5481037
    Abstract: A process for the purification of tertiary amines in a crude mixture contaminated with undesirable primary and secondary amines which may have only a slight variance in boiling point with respect to the tertiary amine, wherein the crude mixture of the tertiary amine is treated at temperatures which may range from 0.degree. to 200.degree. C. but preferably from 20 to 150.degree. C. and at pressures of from 1 to 200 bar but most preferably under atmospheric pressure with a carboxylate of the formula ##STR1## in which R.sup.4 and R.sup.5 are selected from the group consisting of C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.4 -C.sub.20 -cycloalkylalkyl, and aryl or C.sub.7 -C.sub.20 -aralkyl, both optionally mono- to penta- substituted by C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, or C.sub.4 -C.sub.12 -cycloalkylalkyl, and R.sup.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: January 2, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Fuchs, Tom Witzel, Klaus P. Stadler
  • Patent number: 5481041
    Abstract: A process for isolating triphenylphosphine (TPP) from a triphenylphosphine/aluminum chloride complex dissolved in chlorobenzene by decomplexation, hydrolysis and extraction using water and subsequent separation of the liquid/liquid dispersion, which is composed of a TPP-containing chlorobenzene phase and of an containing Al and Cl compounds aqueous phase, into a TPP-containing chlorobenzene phase and into a TPP-free, aqueous phase, containing Al and Cl compounds, whereinwater is dispersed in the chlorobenzene phase in a ratio of 0.6-0.95 kg of water per kg of chlorobenzene solution in a 1st mixing apparatus in such a way that the temperature resulting from the hydrolysis is in the range from 60.degree. to 90.degree. C., the dispersion being carried out with residence times of 5-30 minutes and energy densities of 2-10 kW/m.sup.3,a second dispersion is carried out in a 2nd mixing apparatus with residence times of 5-60 minutes and energy densities of 0.05-0.5 kW/m.sup.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: January 2, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Lechtken, Friedrich Sauer, Matthias Fankhaenel, Dieter Hermeling
  • Patent number: 5480852
    Abstract: A novel Phillips catalyst for the copolymerization of ethylene with .alpha.-olefins, contains, as a catalytically active component, a finely divided, aluminum silicate-supported, phosphorus-containing chromium catalyst. This can be prepared by applying at least one organic phosphorus(III), (IV) and/or (V) compound and at least one chromium(III) compound which does not react with said phosphorus compounds under the reaction conditions used, in succcession in any order or simultaneously, to a finely divided aluminum silicate hydrogel or xerogel with formation of a catalyst intermediate and activating the catalyst intermediate at elevated temperatures in an oxidizing atmosphere, with the result that the chromium catalyst is formed. The novel Phillips catalyst gives ethylene/.alpha.-olefin copolymers in which the comonomers are more uniformly distributed over the copolymer chains than is the case with ethylene/.alpha.-olefin copolymers which have been prepared with the aid of conventional Phillips catalysts.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: January 2, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Mueller, Kaspar Evertz, Siegfried Weber, Guido Funk, Rainer Konrad, Roland Saive