Patents Assigned to BASF
  • Preparation of tetrachloro-3-iminoisoindolin-1-one
    Patent number: 4751314
    Abstract: Tetrachloro-3-iminosisoindolin-1-one (I) or its alkali metal salt (Ia) is prepared by reacting tetrachloro-ortho-phthalodinitrile with lithium hydroxide, sodium hydroxide and/or potassium hydroxide in substantially anhydrous tert-butanol and, if desired, liberating (I) from (Ia) by means of a dilute acid.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: June 14, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Erwin Hahn, Heinrich Kowarsch
  • Tape guide system for magnetic tapes, especially video tapes
    Patent number: 4751601
    Abstract: A tape guide system wherein a magnetic tape having different resistivities on its back and front travels in contact with guide elements, the members of these elements which are in contact with the tape being matched to the relevant face of the tape in respect of surface resistivity and/or of charge affinity. The members contacting the front of the magnetic tape accordingly consist of a conductive or low-insulation material and the members contacting the back of the tape consist of a high-insulation material. In alternative embodiments, the contact members can consist of a material of low conductivity, or of a plastic with an added conductive material. The novel guide system can be used in any type of high-speed magnetic tape transport mechanism. The invention also concerns the tape guide elements per se, and magnetic tape cassettes employing the tape guide system.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: June 14, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Roland Roos, Klaus D. Schomann, Wulf Muenzner
  • Selective regeneration of mediators in the presence of a catalyst and surfactant
    Patent number: 4749670
    Abstract: A process for hydrogenating mediators with the aid of surfactant-modified metal catalysts, and catalysts which can be used for this purpose, are described.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Simon, Jordanes Thanos
  • Copolymers, use thereof as hair fixatives and hair fixatives containing same
    Patent number: 4748989
    Abstract: Copolymers of vinylpyrrolidone, acrylamides which are monoalkylated or dialkylated on the N atom and alkyl or hydroxyalkyl esters of (meth)acrylic acid, with or without (meth)acrylic acid, or (meth)acrylic acid are used as and in hair fixatives.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Nuber, Axel Sanner, Friedrich Vogel, Dietrich Mass
  • Fully aromatic mesomorphic polyesters and their preparation
    Patent number: 4749769
    Abstract: Fully aromatic mesomorphic polyesters which give a liquid crystalline filament-forming melt below 300.degree. C. consist of(a) from 5 to 25 mol % of repeating units of the formula I ##STR1## (b) from 5 to 25 mol % of repeating units of the formula II ##STR2## (c) from 10 to 50 mol % of repeating units of the formula III ##STR3## and (d) not less than 10 mol % of repeating units of the formula IV ##STR4## the sum of the molar amounts of components (a), (b), (c) and (d) being 100 mol %, and the molar ratio of components (a) and (b) to component (c) being from 0.9:1 to 1.1:1.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Jakob Kock, Michael Portugall, Bernd Hisgen, Jurgen Mertes
  • Electrochemical coating of carbon fibers
    Patent number: 4749451
    Abstract: Electroconductive coats are applied by a process wherein the anode and the cathode of an electrolysis bath are composed of carbon fibers, filaments or sheetlike structures therefrom and the electrolyte solution contains a monomer and a conductive salt, the monomer being oxidized at the anode and deposited on the anode as a polymer and the conducting salt used containing a metal as cation, so that the metal is reduced and deposited on the cathode.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventor: Herbert Naarmann
  • Wholly aromatic mesomorphic polyesters and their preparation
    Patent number: 4749770
    Abstract: Wholly aromatic, mesomorphic polyesters which give a homogeneous liquid crystalline melt at below 320.degree. C. consist of(a) not less than 10 mol % of repeating units of the formula I ##STR1## (b) from 1 to 25 mol % of repeating units of the formula II ##STR2## (c) from 5 to 20 mol % of one or more of the repeating units of the formulae III to VII ##STR3## (d) from 5 to 15 mol % of repeating units of the formula VIII ##STR4## and (e) from 10 to 60 mol % of repeating units of the formula IX ##STR5## the sum of the molar amounts of (a), (b), (c), (d) and (e) being 100 mol % in each case and the molar ratio of the components (b)+(c)+(d) to component (e) being from 0.9:1 to 1.1:1.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Jakob Kock, Michael Portugall, Bernd Hisgen, Juergen Mertes
  • Binders for aqueous, physically drying anticorrosion coatings based on a polymer dispersion containing a monoalkyl phosphate
    Patent number: 4749735
    Abstract: Aqueous anticorrosion coatings which contain a binder based on styrene/alkyl (meth)acrylate copolymer dispersions which contain(a) from 0.5 to 4% by weight of a monoalkyl phosphate having a phosphorus content of not less than 7% and(b) from 0.1 to 3.5% by weight of an oxyethylated alkylphenol, where alkyl is of 8 or 9 carbon atoms, and/or of an oxyethylated C.sub.8 -C.sub.18 -fatty alcohol, the percentages by weight being based on the amount of copolymer and the copolymers having a mean particle diameter of from 0.01 to 0.5 .mu.m and an MFT of from 5.degree. to 50.degree. C., exhibit good adhesion, especially to iron and steel, and are particularly resistant to weathering.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Dersch, Heribert Kossmann, Eckehardt Wistuba
  • Production of paper and cardboard
    Patent number: 4749444
    Abstract: Paper and cardboard are produced by draining a paper stock by a method in which a stock having a consistency of from 2.5 to 5% by weight is used as a starting material, and (a) from 0.1 to 2% by weight of an activated bentonite are added and the stock consistency is then brought to 0.3-2% by weight by dilution with water, after which (b) from 0.01 to 0.1% by weight of a cationic polyelectrolyte having a charge density of not less than 4 meq/g of polyelectrolyte is added and distributed therein, and, after thorough mixing (c) from 0.003 to 0.3% by weight of a high molecular weight polymer based on acrylamide or methacrylamide is metered in and mixed with the paper stock, the percentages in each case being based on dry paper stock, and the resulting pulp is drained on a wire. The paper obtained is distinguished in particular by good printing properties in the offset printing process.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: June 7, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Lorz, Friedrich Linhart, Werner Auhorn, Manfred Matz
  • Flame-resistant, thermoplastic polyurethane elastomers, process for their preparation, and their use
    Patent number: 4748195
    Abstract: The invention relates to flame-resistant, thermoplastic polyurethane elastomers containing a flame-retardant additive package comprising:(a) a compound selected from the group consisting of antimony trioxide, zinc borate and mixtures thereof,(b) a chlorinated polyethylene, and(c) a brominated aromatic compound, preferably selected from the group consisting of polytetrabromobis(phenol)-A-glycidyl ether), polytribromostyrene, and polytetrabromobis(phenol)-A-carbonate).The flame-retardant additive package may be incorporated into the starting components used to prepare the thermoplastic polyurethane prior to the reaction which forms the polyurethane, to the reaction mixture during the reaction, or to the finished thermoplastic polyurethane elastomers.The flame resistant, thermoplastic polyurethane elastomers are suitable for the preparation of, for example, molded articles, films, sheets, and cable jackets.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: May 31, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Christa Hackl, Dietrich Wagner, Hans M. Rombrecht
  • Fully aromatic thermotropic polyesters
    Patent number: 4748229
    Abstract: Fully aromatic thermotropic polyesters are based on(A) from 30 to 60 mol % of 4-hydroxybenzoic acid,(b) from 20 to 35 mol % of a mixture of(B.sub.1) terephthalic acid and(B.sub.2) isophthalic acid,the molar ratio of B.sub.1 to B.sub.2 being from 1.04:1 to 19:1, and(C) from 20 to 35 mol % of a mixture of(C.sub.1) hydroquinone,(C.sub.2) 4,4'-dihydroxydiphenyl and(C.sub.3) from 0.5 to 5 mol % of(C.sub.31) 2,7-dihydroxynaphthalene and/or(C.sub.32) 1,3-dihydroxybenzene and/or(C.sub.33) and aromatic dihydroxy compound of the general formula I ##STR1## where X is --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --S--, --SO.sub.2 --, --O-- or --CO--, and/or(C.sub.34) a compound of the general formula II ##STR2## where Y is NH.sub.2 or OH, the molar ratio of C.sub.1 to C.sub.2 being from 0.1:1 to 2.67:1 and the molar ratio of B to C being from 0.9:1 to 1.1:1.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: May 31, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Hisgen, Hans-Jakob Kock, Michael Portugall, Erhard Seiler, Gerd Blinne
  • Diastereoselective reduction of alpha-triazolylketones to betatriazolylcarbinols
    Patent number: 4748250
    Abstract: Sterically pure .beta.-triazolyl carbinols of the general structure ##STR1## where R is not hydrogen, in particular the R*, S*-diastereomer, are obtained by diastereoselective reduction of the corresponding .alpha.-triazolylketone with a complex hydride which reduces ketones to alcohols, in the presence of a Lewis acid in a non-polar solvent.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: May 31, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter C. Thieme, Hubert Sauter, Gernot Reissenweber
  • Preparation of finely divided pulverulent crosslinked copolymers
    Patent number: 4748220
    Abstract: Pulverulent crosslinked copolymers are prepared by polymerizing monomer mixtures consisting of(a) from 70 to 99.99% by weight of monoethylenically unsaturated carboxylic acids, their amides and/or esters of such carboxylic acids and aminoalcohols,(b) from 0.001 to 10% by weight of a diethylenically or polyethylenically unsaturated monomer and(c) from 0 to 20% by weight of other monoethylenically unsaturated monomersin supercritical carbon dioxide under superatmospheric pressure in the presence of a free radical initiator.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: May 31, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich Hartmann, Walter Denzinger
  • Method of preparation of novel 2-(alkoxymethyl)-pentane-1,5-diisocyanates, 2-(alkoxymethyl)-pentane-1,5-diurethanes, and 2-(alkoxymethyl)-pentane-1,5-dicarbamic acid chlorides and their uses
    Patent number: 4748226
    Abstract: This invention relates to novel 2-(alkoxymethyl) pentane-1,5-diisocyanates, 2-(alkoxymethyl)-pentane-1,5-diurethanes, and 2-(alkoxymethyl)-pentane 1,5-dicarbamic acid chlorides having the structure: ##STR1## in which R is a straight chain or branched C.sub.1 -C.sub.20 -alkyl radical, a straight chain or branched C.sub.2 -C.sub.20 -alkenyl radical, a straight chain or branched C.sub.3 -C.sub.20 -oxaalkyl radical, an optionally substituted C.sub.5 -C.sub.12 -cycloalkyl radical, or an optionally substituted C.sub.7 -C.sub.20 -aralkyl radical and X is a --NCO--, --NH--CO.sub.2 R.sup.1 --, --NHCO.sub.2 R.sup.2 -- OR - NHCOCl-group whereby R.sup.1 and R.sup.2 can be the same or different and are a straight chain or branched C.sub.1 -C.sub.20 -alkyl radical or a C.sub.5 -C.sub.12 cycloalkyl radical, as well as a process for their preparation.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: May 31, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Merger, Wolfgang Schwarz
  • Detergents containing graft copolymers of polyalkylene oxides and vinyl acetate as antiredeposition inhibitors
    Patent number: 4746456
    Abstract: Detergents contain added graft copolymers which have an antiredeposition action and are obtainable by grafting polyalkylene oxides having a number average molecular weight of from 2000 to 100,000 with vinyl acetate in a weight ratio of from 1:0.2 to 1:10, and up to 15% of whose acetate groups may be hydrolyzed.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: May 24, 1988
    Assignee: Basf Aktiengesellschaft
    Inventors: Alexander Kud, Guenther Schulz, Wolfgang Trieselt, Heinrich Hartmann
  • Functional fluids and concentrates thickened with associative polyether thickeners containing certain primary amines
    Patent number: 4746450
    Abstract: This invention relates to water based functional fluids and antiwear compositions for such functional fluids. The functional fluids can be used in hydraulic systems or as metal working compositions to cool and lubricate surfaces which are in frictional contact during operations such as the turning, cutting, peeling, or grinding of metals. More specifically, the invention relates to a novel antiwear composition for inclusion in functional fluids which comprises:(a) a metal dialkyldithiophosphate, and(b) certain primary amines.It has been found that this combination of certain primary amines with the metal dialkyldithiophosphate provides improved wear properties over the use of the metal dialkyldithiophosphate alone, particularly at higher operating pressures such as 2000 psig and above. The functional fluid would also contain(c) a thickener and optionally(d) a carboxylic compound; and(e) a surfactant.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: May 24, 1988
    Assignee: BASF Corporation
    Inventors: Mark A. Frentrup, Stanley T. Hirozawa, Charles F. Deck
  • Isoindoline colorants
    Patent number: 4746740
    Abstract: Isoindoline colorants of the formula ##STR1## where the radicals R independently of one another are each methyl or ethyl, give neutral yellow colorations when incorporated into surface coatings. The colorations do not darken on weathering and, compared with prior art pigments, exhibit improved gloss stability on weathering.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: May 24, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Lotsch, Reinhard Kemper
  • Bentazon containing wastewater treatment
    Patent number: 4746443
    Abstract: The instant invention relates to a process and apparatus for treating wastewater containing bentazon by decomposing the bentazon therein and thus eliminating or substantially reducing the bentazon content. This process comprises adjusting the pH of the wastewater to a value of less than 7 and heating it to a temperature of at least about 60.degree. C.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: May 24, 1988
    Assignee: BASF Corporation
    Inventors: Mao-Yao Huang, Joseph F. Louvar, Albrecht Muller, Hanspeter Hansen, Hans Merkle
  • Cyclohexenone derivatives, their manufacture, and their use as agents for regulating plant growth
    Patent number: 4744820
    Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1 is --CHO or --CH(OR.sup.3).sub.2, R.sup.2 is alkyl or alkoxyalkyl, each of 1 to 4 carbon atoms, or cyclopropyl, and R.sup.3 is alkyl of 1 to 8 carbon atoms, and salts thereof, processes for their manufacture, and their use as agents for regulating plant growth.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: May 17, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Keil, Ulrich Schirmer, Dieter Kolassa, Wilhelm Rademacher, Johann Jung
  • 7-aminozolo[1,5-a]pyrimidines and fungicides containing these
    Patent number: RE32676
    Abstract: 7-Aminoazolo[1,5-a]pyrimidines of the formula ##STR1## where R.sup.1 is alkyl or aralkyl,R.sup.2 and R.sup.3 are each hydrogen or alkyl, andA is nitrogen or CR.sup.4, whereR.sup.4 is hydrogen, alkyl or halogen, and fungicides containing these compounds.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: May 24, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Eicken, Hermann Graf, Walter Gramlich, Hubert Sauter, Costin Rentzea, Ernst-Heinrich Pommer, Eberhard Ammermann