Patents Assigned to BASF
  • Dispersant for textile dyeing and optical brightening
    Patent number: 4229174
    Abstract: A process for dyeing textile materials, containing natural and/or synthetic fibers, in an aqueous liquor by means of dyes which are sparingly soluble or insoluble in water, in the presence of dyeing assistants, wherein the dispersant used is a water-soluble sulfonic acid which is derived from a random copolymer of olefins of 3 to 6 carbon atoms and styrene and/or substituted styrenes and/or their alkali metal salts or ammonium salts.
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Paul Boerzel, Peter Freyberg, Norbert Greif, Rudi Widder
  • Preparation of modified polymers of N-vinylpyrrolid-2-one and their use for the preparation of polymers interrupted by bridge members
    Patent number: 4229551
    Abstract: A process for the preparation of modified poly-N-vinylpyrrolid-2-one containing two identical reactive groups, wherein polyvinylpyrrolidone is treated with complex hydrides, with or without further reaction of the modified polyvinylpyrrolidone with a reactive bifunctional compound, to give a polymer which has a molecular weight at least 2.5 times as great as that of the starting polymer.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Ferdinand Straub, Herbert Spoor, Claus Cordes
  • Lime-free and sulfide-free liming process
    Patent number: 4229175
    Abstract: A continuous liming process using sodium hydroxide solution and sodium sulfate and/or sodium salts of dicarboxylic acids, instead of conventional liming components.
    Type: Grant
    Filed: March 24, 1978
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: France Knaflic, Franz-Friedrich Miller
  • Manufacture of substituted fluorobenzenes
    Patent number: 4229365
    Abstract: Fluorobenzenes are manufactured by reacting substituted chlorobenzenes with potassium fluoride in the presence of catalytic amounts of cesium fluoride and in the presence of certain solvents; m-nitrofluorobenzenes and m-cyanofluorobenzenes can also be manufactured in the absence of cesium fluoride. The products are starting materials for the manufacture of dyes, pharmaceuticals and pesticides.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz-Guenter Oeser, Karl-Heinz Koenig, Dietrich Mangold
  • (2-Chloro-4-cyanophenyl) (4-dialkylaminophenyl)-diazine dye useful for transfer printing
    Patent number: 4229345
    Abstract: Dyes useful for transfer printing and having the formula ##STR1## in which X and Y are hydrogen or halogen,Z is hydrogen or methyl,R.sup.1 is hydrogen, lower alkyl or alkoxy,R.sup.2 is hydrogen, chlorine, lower alkyl, alkoxy, alkanoylamino or pyrrolidonyl, andR.sup.3 and R.sup.4 are alkyl optionally substituted by alkoxy, chlorine, alkanoyl or alkoxycarbonyl. The dyes are especially useful for the transfer printing of polyamides, giving prints having very good light and wet fastnesses.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventor: Gunther Lamm
  • Substituted alkoxyimino-pyridazones, their manufacture, and their use as herbicides
    Patent number: 4229205
    Abstract: New pyridaz-6-ones having a good herbicidal action, herbicides containing these compounds, and a process for controlling unwanted plant growth with these compounds.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Theobald, Bruno Wuerzer, Karl Kiehs
  • Stabilized poly(alkylene terephthalate) molding materials
    Patent number: 4229553
    Abstract: Poly(alkylene terephthalate) molding materials which contain, as the stabilizer, a diepoxide of molecular weight from 200 to 2,000, and a catalyst which is an alkali metal salt of a chelating agent possessing one or more --N(CH.sub.2 --COO.sup.-).sub.2 groups in the molecule. Preferred catalysts are trisodium nitrilotriacetate and tetrasodium ethylenediaminetetraacetate. The molding materials may be used for the manufacture of moldings, films, monofilaments and fibers.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Josef Sterzel, Rolf Wurmb, Franz Schmidt, Erhard Seiler
  • Manufacture of a titanium-containing component for catalysts of the Ziegler-Natta type
    Patent number: 4229318
    Abstract: A process for the manufacture of a titanium-containing component of a catalyst for the Ziegler-Natta polymerization of .alpha.-monoolefins, by (a) milling a titanium-containing compound of the general formula TiCl.sub.3.nAlCl.sub.3 (where n is a number from 0.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: October 21, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Mueller-Tamm, James F. R. Jaggard, Hans Schick
  • Process for the preparation of liquid carbodiimide-modified organic polyisocyanates employing organotin catalysts
    Patent number: 4228095
    Abstract: Carbodiimide-modified organic polyisocyanates are prepared by heating polyisocyanates in the presence of a catalytically sufficient amount of an organotin compound.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: October 14, 1980
    Assignee: BASF Wyandotte Corporation
    Inventor: Thirumurti Narayan
  • Stabilized polyoxyalkylene polyether polyol
    Patent number: 4228247
    Abstract: Synergistic stabilizer combinations consisting of phenols such as 2,6,-di-t-butyl-4-methylphenol, amines such as 4,4'-bis(alpha,alpha- dimethylbenzyl)diphenylamine and p,p'-di-octyldiphenylamine, and phosphites such as phenyldidecylphosphite with 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6-(1H,3H,5H-trione are employed as oxidative stabilizers for polyoxyalkylene polyether polyols and for the prevention of scorch in polyurethane foams prepared therefrom.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: October 14, 1980
    Assignee: BASF Wyandotte Corporation
    Inventors: Richard A. Moore, Robert J. Hartman, William W. Levis, Jr., Ralph E. Bloom
  • Method and apparatus for compensation of time base errors
    Patent number: 4228460
    Abstract: Method and apparatus for compensating for variations in the time base of a video signal reproduced in a longitudinal video tape recording system. The signal is passed through a charge-coupled device clocked by a variable rate clock signal to correct for the timing variations. Thereafter, a clamping circuit removes variable voltage offsets introduced by the charge-coupled device, to prevent objectionable horizontal streaking from occurring in the resulting video picture. A clipping circuit removes random noise from the time base pulses of the video signal prior to its passing through the charge-coupled device, whereby the clamping circuit is prevented from creating an objectionable flicker in the resulting video picture.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: October 14, 1980
    Assignee: BASF Aktiengesellschaft
    Inventor: Gerhard Rotter
  • Preparation of substituted fluorobenzenes
    Patent number: 4226811
    Abstract: A process for the preparation of substituted fluorobenzenes which contain a nitro group or a cyano group and may or may not contain an aliphatic radical or an additional halogen atom, wherein the corresponding substituted chlorobenzene is reacted with potassium fluoride in the presence of a crown ether and a solvent at from 150.degree. to 230.degree. C.
    Type: Grant
    Filed: January 11, 1979
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz-Guenter Oeser, Karl-Heinz Koenig, Dietrich Mangold
  • Manufacture of propylene oxide
    Patent number: 4226780
    Abstract: Propylene oxide is prepared by elimination of water from propylene glycol which in turn is obtainable from propylene glycol acetate. The water is eliminated in the gas phase over a solid catalyst which consists of a weakly acidic carrier and an alkaline additive. The process offers a new method of manufacturing propylene oxide.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerd Fouquet, Franz Merger, Karl Baer
  • Production of adipic acid from acidic wash waters
    Patent number: 4227021
    Abstract: An improved process for producing adipic acid from the acidic wash waters which arise in the process for oxidizing cyclohexane with air, by treatment with nitric acid at from 10.degree. to 50.degree. C., with removal of the heat of reaction by external cooling, wherein the reaction mixture is led, at a flow velocity of at least 2.0 m/sec, as a thin layer spirally in counter-current to the coolant, under conditions which do not perturb the flow of the reaction mixture.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto-Alfred Grosskinsky, Norbert Petri, Johannes Hein, Hans Leitner
  • .alpha.-Aminomethylene-.beta.-formylaminopropionitrile and its manufacture
    Patent number: 4226799
    Abstract: An improved method of manufacture of 2-methyl-4-amino-5-formylaminomethylpyrimidine (II), wherein a N-substituted or unsubstituted .alpha.-aminomethylene-.beta.-formylaminopropionitrile (I) is reacted with acetamidine.Compound II is an intermediate for the manufacture of vitamin B.sub.1.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Bewert, Wolfgang Littmann
  • Diurethanes
    Patent number: 4227007
    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: January 13, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Wolfgang Rohr, Bruno Wuerzer, Kurt Fett
  • Bisthiocarbamic acid esters and herbicidal use thereof
    Patent number: 4226613
    Abstract: New diurethanes having a herbicidal action, the urethane radicals being attached to a phenyl radical in meta position and at least one of the urethane radicals containing sulfur; herbicides containing these compounds as active ingredients; processes for the preparation of these compounds; and processes for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Bruno Wuerzer, Wolfgang Rohr
  • Process for preparing pigment compositions
    Patent number: 4226634
    Abstract: Pigment compositions including nickel titanium yellow or chromium titanium yellow as an inorganic component together with an organic pigment component impart better gloss and/or hiding power to organic coatings containing 10% or more of the compositions if the compositions are prepared by subjecting a suspension of the components in a liquid medium to intense shearing stresses and thereafter separating the mixed pigments from the medium.
    Type: Grant
    Filed: January 23, 1979
    Date of Patent: October 7, 1980
    Assignee: BASF Farben & Fasern AG
    Inventors: Peter Dimroth, Helmut Knittel, August Seitz, Dietrich Wolff
  • Graft polyesters and sized textiles
    Patent number: 4225681
    Abstract: A cross-linked graft polyester comprising the reaction product of an aminoplast and a graft polyester, said graft polyester comprising the reaction product of (1) an unsaturated polyester which is the reaction product of at least one polycarboxylic acid reactant, preferably a dicarboxylic acid reactant and at least one polyhydric alcohol reactant, preferably a diol, wherein a minor effective proportion of at least one of said reactants is .alpha.,.beta.-ethylenically unsaturated with (2) at least one monovinyl monomer reactant comprising at least one acidic monovinyl monomer containing at least one carboxyl group or a mixture of said vinyl monomer with any monovinyl monomer.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: September 30, 1980
    Assignee: BASF Wyandotte Corporation
    Inventor: Robert B. Login
  • Tape transport mechanism
    Patent number: 4225099
    Abstract: This invention relates to a tape transport mechanism, particularly an improved contact winding tape transport system modified to protect it against tape transport disturbances occasioned by mechanical impacts. A shock-resisting coupling means is provided which is allocated to the reel carriers and which allows slow movements of the carriers toward and away from a drive capstan during normal working of the mechanism but prevents sudden movements of the carriers induced by mechanical shocks for instance. Piston/cylinder assemblies and magnetic rope/drum arrangements are disclosed as such shock-resisting means. The transport mechanism can be used advantageously in portable apparatus, preferably in magnetic tape recorders and especially in video cameras.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: September 30, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schoettle, Helmut Lewin, Werner Hoffmann, Peter Dobler, Lothar Gliniorz