Patents Assigned to BASF
  • Production of fiber-reinforced materials
    Patent number: 4590104
    Abstract: Fiber-reinforced materials are produced by impregnating continuous filaments with a melt of a polyarylene sulfide ketone, preferably one having a reduced viscosity .eta..sub.red of from 0.1 to 0.5 [dl.g.sup.-1 ], shaping the resulting semi-finished product to give a finished article and heating the latter for not less than 15 minutes at above the crystallite melting point of the polyarylene sulfide ketone, the latter undergoing crosslinking and its glass transition temperature Tg increasing by not less than 5.degree. C.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: May 20, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Hartmut Zeiner, Jurgen Fischer, Gerhard Heinz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer
  • Novel 4'(benzisothiazo-5-yloxy)-phenylurea derivatives, their preparation and their use as herbicides
    Patent number: 4589910
    Abstract: A 4'-(Benzisothiazol-5-yloxy)-phenylureas of the formula ##STR1## where R.sup.1 and R.sup.2 are each a saturated straight-chain or branched aliphatic radical of 1 to 10 carbon atoms, an unsaturated straight-chain or branched aliphatic radical of 3 to 10 carbon atoms, or an araliphatic or aromatic radical which may be substituted by 1, 2 or 3 C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, cyano, halogen, nitro, monofluoromethyl or trifluoromethyl groups, or are each alkoxy of 1 to 6 carbon atoms, R.sup.2 may furthermore be hydrogen, or R.sup.1 and R.sup.2, together with the nitrogen atom, may be members of a 5-membered or 6-membered ring which may contain further nitrogen and/or oxygen atoms as heteroatoms, and X is hydrogen, trifluoromethyl or chlorine, processes for their preparation, and herbicides containing ureas of the formula I as active ingredients.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: May 20, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Hagen, Hans Ziegler, Bruno Wuerzer
  • Process for the preparation of elastomeric molded parts having urethane or urethane and urea groups with improved light fastness and weather resistance
    Patent number: 4590219
    Abstract: The invention relates to a process for the preparation of elastomeric molded parts having urethane or urethane and urea linkages which comprises reacting(a) an organic polyisocyanate,(b) a polyhydroxyl compound selected from the group consisting of(i) polyester polyols with molecular weights of 1000 to 3000 and hydroxyl numbers of 170 to 35 produced by polycondensation of organic dicarboxylic acids and a polyol mixture of at least 3 polyols;(ii) polyether polyols having terminal ester groups, molecular weights of 1000 to 8000 and hydroxyl numbers of 170 to 15; and(iii) mixtures thereof;(c) a chain extenderwherein components (a) through (c) are processed according to reaction injection molding techniques in open or closed molds.The reaction is preferably carried out as a one-shot process and may also be carried out in the presence of blowing agents (d), auxiliaries (e), and additives (e).
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: May 20, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietmar Nissen, Matthias Marx, Hans U. Schmidt
  • Production of low-shrinkage nylon moldings
    Patent number: 4590242
    Abstract: Low-shrinkage nylon moldings are produced by activated alkaline lactam polymerization, preferably using the reactive injection molding technique, by a process wherein the polymerization is carried out in the presence of from 5 to 80% by weight of a polymer P which1. is completely soluble in the lactam,2. separates out in the course of polymerization at a conversion of from 1 to 50%,3. is composed of one or more blocks which are compatible with polylactam and one or more blocks which are incompatible therewith, and preferably4. possesses functional groups which are incorporated into the growing polylactam chain.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: May 20, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Horn, Hellmut Bunsch, Anton Hesse, Matthias Marx, Dietmar Nissen, Walter Heckmann
  • Stabilization of photopolymerizable mixtures
    Patent number: 4590146
    Abstract: Photopolymerizable water-soluble or water-dispersible mixtures essentially consisting of a base polymer, at least one polymerizable ethylenically unsaturated compound and at least one photoinitiator and/or photosensitizer are stabilized to thermal polymerization by treating the base polymer with a halogen, a pseudohalogen or a polyhalide.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: May 20, 1986
    Assignee: BASF Aktiengesellschaft
    Inventor: Guenter Wallbillich
  • Photopolymerizable recording material and the production of relief plates using this recording material
    Patent number: 4590144
    Abstract: A photopolymerizable recording material for the production of relief plates comprises a photopolymerizable layer which can be developed in an alcoholic solution and contains a mixture of a photoinitiator, a photopolymerizable monomer and a linear, high molecular weight polyurethane which possesses activated double bonds in side branches, and is prepared using a polyether-diol from the group comprising the polyethylene glycols, propylene glycols and ethylene glycol/propylene glycol co-condensates.
    Type: Grant
    Filed: July 13, 1984
    Date of Patent: May 20, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunnar Schornick, Mong-Jon Jun, Axel Sanner, August Lehner, Werner Lenz, Peter Richter, Albrecht Eckell
  • Polyurethane products based on alkylene oxide adducts of aniline having reduced viscosity
    Patent number: 4590225
    Abstract: The subject invention relates to alkylene oxide adducts of aniline prepared by reacting an alkylene oxide with an aniline in the presence of preferably at least 0.1 part of alkali metal hydroxide per 100 parts by weight of aniline.The resulting compositions may be used in the preparation of polyurethane products, such as rigid polyurethane foams, and may also be used as nonionic surfactants.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: May 20, 1986
    Assignee: BASF Corporation
    Inventors: Alexander Korczak, William W. Levis, Jr.
  • Polyurethane sealant compositions and their use as thermal-break sealants
    Patent number: 4588803
    Abstract: The invention relates to low shrinkage polyurethane sealant compositions which are prepared by reacting a mixture of a polyoxyalkylene polyether glycol, an ethylene oxide adduct of toluenediamine and triisopropanolamine with an organic polyisocyanate.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: May 13, 1986
    Assignee: BASF Corporation
    Inventor: Donald L. Christman
  • Preparation of phthalaldehyde acetals
    Patent number: 4588482
    Abstract: Phthalaldehyde acetals of the formula ##STR1## where R is alkyl, are prepared by a process in which the corresponding bis-(alkoxymethyl)-benzenes are electrochemically oxidized in the presence of an alkanol of the formula ROH.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: May 13, 1986
    Assignee: BASF Aktiengesellschaft
    Inventor: Dieter Degner
  • Preparation of alkali metal and alkaline earth metal salts of acyloxybenzenesulfonic acids
    Patent number: 4588531
    Abstract: Alkali metal and alkaline earth metal salts of acyloxybenzenesulfonic acids of the formula I ##STR1## where R is a saturated or unsaturated alkyl radical of 1 to 17 carbon atoms or is phenyl which is unsubstituted or monosubstituted or disubstituted by alkyl of 1 to 3 carbon atoms, halogen, methoxy or nitro, are prepared by neutralization, by a method in which a liquid acyloxybenzenesulfonic acid of the formula I and an aqueous solution of an alkali metal or alkaline earth metal hydroxide, carbonate or bicarbonate are combined in water, at from 0.degree. to 60.degree. C. and while mixing throughly, so that the pH is kept at from 2.5 to 7.0, and, if desired, the resulting salt is isolated from the aqueous solution in a conventional manner.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: May 13, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolf-Dieter Balzer, Hans-Heinrich Bechtolsheimer, Karl-Heinz Beyer, Rolf Fikentscher, Johannes Perner, Rudi Widder, Helmut Wolf
  • Preparation of tetrahydrofuran
    Patent number: 4588827
    Abstract: Tetrahydrofuran is prepared from a crude alkaline aqueous solution of butane-1,4-diol, as obtained by reaction of acetylene with aqueous formaldehyde and catylytic hydrogenation of the resulting but-2-yne-1,4-diol solution by a process in which the alkaline solution is first neutralized with sulfuric acid and water is then eliminated in the liquid phase at from 200.degree. to 260.degree. C., under superatmospheric pressure and in the presence of phosphoric acid.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: May 13, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Mueller, Christof Palm
  • Functional fluids and concentrates containing associative polyether thickeners and certain metal dialkyldithiophosphates
    Patent number: 4588511
    Abstract: The invention relates to functional fluid concentrates and functional fluids which can be prepared by mixing the concentrates with water. The functional fluid concentrate comprises certain basic zinc salts as cloud point raising additives; a polyether nonionic surfactant; and an associative polyether thickener.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: May 13, 1986
    Assignee: BASF Wyandotte Corporation
    Inventors: Mark A. Frentrup, Stanley T. Hirozawa, James E. Carson, Daniel E. Coker
  • Methods and compositions for intravaginal contraception
    Patent number: 4588581
    Abstract: A pressurized contraception composition in an aerosol container and adapted to form a spray upon release of pressure therefrom which composition is a liquid inside the container and forms a gel on contact with living tissue and process employing same, whereby the composition comprises water, propellant, a polyoxyethylene-polyoxybutylene copolymer, and a sperm function inhibitor.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: May 13, 1986
    Assignee: BASF Corporation
    Inventor: Irving R. Schmolka
  • Substituted ureas and their use for controlling undesirable plant growth
    Patent number: 4588434
    Abstract: Substituted ureas of the formula ##STR1## where R.sup.1 is hydrogen or alkyl, R.sup.2 is hydrogen, alkyl, alkoxy, alkenyl, alkynyl, unsubstituted or substituted cycloalkyl or unsubstituted or substituted phenyl and R.sup.3 and R.sup.4 are each hydrogen, halogen or a radical --CO--S--R, with the proviso that one or both of the substituents R.sup.3 and R.sup.4 are the radical --CO--S--R, are used for controlling undesirable plant growth.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: May 13, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Arno Lange, Bruno Wuerzer
  • Pyrrole polymers as electrical heating elements
    Patent number: 4587037
    Abstract: Moldings from the class of the pyrrole polymers which are complexed with anions are used as electrical heating elements.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: May 6, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Munstedt, Helmut Gebhard, Herbert Naarmann, Johannes Schlag
  • Sound-insulating boards based on mineral fibers and thermoplastic binders
    Patent number: 4587278
    Abstract: Sound-insulating boards which are based on mineral fibers and thermoplastic binders and may or may not additionally contain fillers, flameproofing agents and water repellants contain, as the binder, from 4 to 20%, based on the weight of the mineral fibers, of polymers having a glass transition temperature of from 30.degree. to 80.degree. C. and consisting of not less than 60% by weight, based on the copolymer, of (meth)acrylates of 1 to 4 carbon atoms and as much as 40% by weight of acrylonitrile and/or styrene.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: May 6, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Dotzauer, Hans Kast, Gernot Franzmann, Gregor Ley, Wilhelm F. Beckerle, Wolfgang Schilder
  • Preparing capped polyoxyalkylene polyols
    Patent number: 4587365
    Abstract: The instant invention relates to a process which comprises modifying a conventional polyoxyalkylene polyol by capping all the hydroxyl groups of the polyol with benzyl, aryl, substituted benzyl, substituted aryl or alkyl groups having 1 to 4 carbon atoms. This process comprises reacting the conventional polyoxyalkylene polyol with an alkali metal methoxide followed by reaction with an alkali metal hydride which in turn is followed by reaction with an organic halide.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: May 6, 1986
    Assignee: BASF Corporation
    Inventor: Michael J. Anchor
  • Obtaining C.sub.1 -C.sub.4 -alkyl pentenoates by distillation
    Patent number: 4586987
    Abstract: C.sub.1 -C.sub.4 -alkyl pentenoates are obtained from reaction mixtures which contain this and which are obtained by reacting butadiene, or a butadiene-containing hydrocarbon mixture, with carbon monoxide and a C.sub.1 -C.sub.4 -alkanol, in the presence of a cobalt carbonyl catalyst and a tertiary nitrogen base at elevated temperatures and under superatmospheric pressure by a process in which(a) the liquid reaction mixture freed from excess carbon monoxide is treated with hydrogen at elevated temperatures and under from 5 to 80 bar,(b) hydrocarbons are distilled off from the resulting liquid reaction mixture,(c) the C.sub.1 -C.sub.4 -alkyl pentenoate, the alkanol and the nitrogen base are then distilled off under reduced pressure, and(d) the C.sub.1 -C.sub.4 -alkyl pentenoate is obtained by fractional distillation from the distillate containing this compound, the alkanol and the tertiary nitrogen base.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: May 6, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz-Walter Schneider, Rudolf Kummer, Otto Leman, Paul Panitz
  • Continuous preparation of oxygen-containing compounds
    Patent number: 4587363
    Abstract: Oxygen-containing compounds are prepared by oxidizing a hydrocarbon in the liquid phase with a gas containing molecular oxygen, at elevated temperatures and under superatmospheric pressure, by a continuous process in which the said gas is fed into the liquid reaction mixture, in a downward direction, at several points along the reaction zone via nozzle apertures, so that it emerges at each nozzle aperture with a velocity of from 0.01 to 1 m/sec in an amount of from 0.001 to 10 liters per second per nozzle aperture, and the said reaction mixture is brought into substantially uniform contact with the gas containing molecular oxygen, over the volume of the reaction zone.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: May 6, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Hartig, Gunter Schuch, Armin Stoessel, Guenter Herrmann, Arthur Brunner, Peter Zehner, Otto-Alfred Grosskinsky
  • Quality of isobutene polymers in reactions with maleic anhydride
    Patent number: 4587307
    Abstract: The processing properties of isobutene polymers when reacted with maleic anhydride are improved by a method in which these polymers are brought into contact, for an effective period,with aluminum oxide and/or a completely or partially hydrated aluminum oxide at 50.degree.-280.degree. C., and/orwith boron oxide and/or a completely or partially hydrated boron oxide and/or with titanium dioxide and/or a partially hydrated titanium dioxide and/or with a completely or partially hydrated silicon dioxide at 0.degree.-280.degree. C.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: May 6, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Bronstert, Waldhelm Hochstein, Hans-Henning Vogel, Hans P. Rath