Patents Assigned to BASF
  • Wood preservative
    Patent number: 4447448
    Abstract: A wood preservative comprises a mixture ofA. N-cyclohexyl-N-methoxy-2,5-dimethyl-furan-3-carboxamide andB. tris-(N-cyclohexyl-diazeniumdioxy)-aluminum.A process for treating wood with this mixture is also described.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: May 8, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Reuther, Hans-Volker Borck
  • Stable water glass solutions, process for their preparation and use for organosilicate foams as well as a production process therefor
    Patent number: 4447561
    Abstract: Stable water glass solutions are obtained(A) by mixing a solution of an aqueous alkali silicate solution and alkali hydroxide with a tertiary amine and subsequently oxyalkylating the resultant two-phase reaction mixture with at least one alkylene oxide in such an amount that a uniform solution forms or(B) by oxyalkylating a tertiary amine with at least one alkylene oxide and mixing the resultant reaction mixture with a solution of an aqueous alkali silicate solution and alkali hydroxide.The stable water glass solutions are suitable for the preparation of organo silicate foams.For the preparation of the organo silicate foams, a mixture of the stable water glass solutions and tertiary amino group-containing polyether polyols is reacted with organic polyisocyanates in the presence of catalysts, blowing agents and optionally auxiliaries and additives.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: May 8, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Horn, Robert Gehm, Matthias Marx, Artur Roeber
  • Perylenetetracarboxylic acid diimides and their use
    Patent number: 4446324
    Abstract: Novel perylene-3,4,9,10-tetracarboxylic acid diimides of the formula ##STR1## where R.sup.1 and R.sup.2 are each isopropyl or R.sup.1 is methyl or ethyl and R.sup.2 is C.sub.3 - or C.sub.4 -alkyl, give clear, luminous, very lightfast, fluorescent orange colorations in plastics.The dyes are particularly suitable for concentrating light.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventor: Fritz Graser
  • Thermoplastic molding material
    Patent number: 4446277
    Abstract: A thermoplastic molding material based on a styrene polymer which has been made impact-resistant, and on a polyphenylene ether, wherein the impact-resistant styrene polymer comprises a soft component which has a mean particle diameter of greater than 0.3 .mu.m and contains an acrylic ester polymer as the elastomeric component. The novel molding materials possess improved flow and give moldings having improved aging resistance.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Adolf Echte, Franz Haaf, Juergen Hambrecht, Herbert Naarmann
  • Process and apparatus for the production of plastic strands
    Patent number: 4446089
    Abstract: A melt of synthetic material is forced through orifices of a die plate, and the resulting strands of melt are led into a trough, where they travel in counter-current to a stream of cooling water. At the end of the trough, the strands are discharged, for further processing. The bottom of the trough merges into a vertical pipe and the melt strands are led into this pipe and out again, in a variable loop, in order to obtain the desired length of cooling path.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hugo Strehler, Guenter Valentin, Werner Hoerauf
  • Production of fine-celled foams from styrene polymers
    Patent number: 4446253
    Abstract: Fine-celled foams are produced by a process in which a styrene polymer is melted, the melt is mixed with a volatile blowing agent and a nucleating agent under superatmospheric pressure, the mixture is let down to atmospheric pressure, and the foam is cooled. The nucleating agent employed comprises from 0.02 to 2% by weight of the calcium salt of a long-chain fatty acid, and from 0.01 to 1% by weight of a finely divided, inorganic substance which is insoluble in the styrene polymer, a mixture of calcium stearate and magnesium oxide being preferred.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Hahn, Heinz Weber, Wolfgang Guenther, Bernhard Schillinger, Reinhold Weber
  • Coating metals with plastisols having carbon dust fillers
    Patent number: 4444837
    Abstract: Plastisols useful for automobile undercoatings, anti-noise compositions, adhesives, sealing compositions and coatings for untreated, pretreated, phosphated, primed and prelacquered metal bases are improved by the addition of coke dust and coal dust fillers. The carbon dust fillers have a particle size of about 0.5 to 1000 microns and they are used in a concentration of about 9 to 90% by weight based on the total weight of plastisol and carbon dust. The carbon dust filled plastisols have a specific gravity of about 1.1 to 1.3.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Farben + Fasern AG
    Inventors: Rainer Blum, Max Seitz, Friedrich Kaczinski
  • Polyadduct/polycondensate which contains basic nitrogen groups, and its use as electrodepositable coating
    Patent number: 4444634
    Abstract: Polyadducts/polycondensates which can be diluted with water when protonated with an acid and which contain basic nitrogen groups are obtained by the polyaddition reaction of(A) a Mannich base obtained from(a) a monophenol and/or a polyphenol,(b) one or more dialkylamines of the formula ##STR1## where R.sup.1 and R.sup.2 are each alkyl or alkoxyalkyl, or are linked to one another to form a 5-membered or 6-membered ring, and(c) formaldehyde with(B) an epoxy resinand contain groups, which are bonded to aromatic rings, of the general formula ##STR2## and may or may not contain groups of the general formula ##STR3## where R.sup.3 and R.sup.4 are each alkyl, hydroxyalkyl or alkoxyalkyl, or are linked to one another to form a 5-membered or 6-membered ring, and R.sup.5 and R.sup.6 are each hydrogen or methyl.These products are useful as binders for the cathodic electrocoating of metallic articles.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Fritz E. Kempter, Eberhard Schupp
  • Bath composition for cataphoretic electrocoating
    Patent number: 4444942
    Abstract: A bath composition for cataphoretic electrocoating of conductive surfaces contains coating agents which have been rendered soluble or dispersible with acid, contain basic nitrogen groups and carry groups of the general formulae (1) and (11) ##STR1## and, optionally, also groups of the general formulae (III) and/or (IV) ##STR2## where R.sup.1 and R.sup.2 are each alkyl, hydroxyalkyl or alkoxyalkyl, R.sup.3 and R.sup.4 are each hydrogen or methyl, R.sup.5 and R.sup.6 are each hydrogen, alkyl or a divalent radical of a polymer molecule which is bonded to a phenol or phenol ether, n.sup.1 is 1, 2 or 3 and n.sup.2 is 1 or 2, and where the oxygen bonded to the phenyl radical is either in the form of the OH group or etherified.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Fritz E. Kempter, Eberhard Schupp, Gunther Sabelus
  • Flocculant for sludges
    Patent number: 4444667
    Abstract: Sludges are flocculated by the addition of a polymer which is prepared by the homopolymerization of N-vinylformamide in the presence of a free-radical polymerization initiator to give a poly-N-vinylformamide, followed by hydrolysis of from 10 to 90% of the formyl groups in the poly-N-vinylformamide.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Burkert, Friedrich Brunnmueller, Karl-Heinz Beyer, Michael Kroener, Hans Mueller
  • Water-soluble benzylated polyamidoamines
    Patent number: 4444959
    Abstract: Water-soluble benzylated polyamidoamines which contain from 0.1 to 0.9 mole of benzyl groups per equivalent of nitrogen, and onto which from 20 to 400 parts by weight of ethyleneimine or propyleneimine have been grafted per 100 parts by weight of polyamidoamine, processes for the preparation of the materials, and the use of the materials as cationic assistants in processes for coloring paper with acid dyes and/or direct dyes in an aqueous medium. The papers obtained show a high color strength, with substantially no two sidedness of the coloration.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Frey, Werner Streit, Rolf Fikentscher, Hans-Juergen Degen, Wolf Guender
  • Copolymers which contain basic groups and are used as antiredeposition agents in washing and after-treating textile goods containing synthetic fibers
    Patent number: 4444561
    Abstract: Textile goods containing synthetic fibers are washed and after-treated by a process wherein, as an antiredeposition agent, a copolymer is employed which contains, as copolymerized monomers,(a) from 50 to 90% by weight of one or more vinyl esters of C.sub.1 -C.sub.4 aliphatic carboxylic acids,(b) from 5 to 35% by weight of one or more N-vinyllactams,(c) from 1 to 20% by weight of one or more monomers containing basic groups, or of salts or quaternization products of these monomers, and(d) from 0 to 20% by weight of one or more further monomers which are copolymerizable with monomers (a), (b) and (c) and are free from carboxyl and basic groups,the percentages in each case being based on the sum of the monomers, with the proviso that the percentages sum to 100.
    Type: Grant
    Filed: February 17, 1983
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Wolfgang Trieselt, Johannes Perner, Heinrich Hartmann
  • Fireproofing composition and door rabbet coated therewith
    Patent number: 4442157
    Abstract: Heat-foamable fireproofing compositions contain thermosetting phenolic resins, thermally decomposable organic nitrogen compounds, eg. dicyandiamide, an ammonium salt and a carbohydrate or polyhydric alcohol, and on decomposition form a stiff carbonaceous foam.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Norbert Marx, Reimer Gottsche
  • Diepoxycyclohexane derivatives
    Patent number: 4442299
    Abstract: New bromoepoxy-cyclohexenes and their derivatives, which are starting compounds for units used to synthesize natural compounds, e.g. cyclitols or aminocyclitols.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Prinzbach, Reinhard Schwesinger, Reinhold Keller
  • Preparation of propylene homopolymers or copolymers
    Patent number: 4442271
    Abstract: The disclosure is directed to an improvement in the gas phase polymerization of propylene using a Ziegler-Natta catalyst in the presence of hydrogen wherein the gaseous propylene is withdrawn from the reactor, cooled and condensed and returned as a liquid to the reactor in order to regulate the polymerization temperature. The amount of the gaseous phase in the condenser-cooler-accumulator system is kept constant by regulating the amount of gaseous phase returned to the reactor.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Rau, Helmut Klamann, Peter Hennenberger
  • Electrochemical preparation of 2,5-dialkoxy-2,5-dihydrofurans
    Patent number: 4441970
    Abstract: 2,5-Dialkoxy-2,5-dihydrofurans are prepared by a process in which 2,5-dihydrofuran is oxidized electrochemically in the presence of an alkanol.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Degner, Heinz Hannebaum
  • Thermoplastic molding materials
    Patent number: 4442263
    Abstract: Thermoplastic molding materials contain a copolymer A and a graft copolymer B. The copolymer A is a hard component comprising one or more copolymers of styrene and/or .alpha.-methylstyrene with from 20 to 40% by weight of acrylonitrile.The graft copolymer B comprises one or more crosslinked acrylate polymer with a mean particle size of 0.5-0.8 .mu.m (d.sub.50 value of the cumulative mass distribution), a particle distribution, expressed by the ratio ##EQU1## in the range Q.gtoreq.0.6, and a glass transition temperature Tg below 0.degree. C. A mixture of styrene and acrylonitrile in a weight ratio from 88:12 to 65:35 is grafted onto this rubber.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Juergen Hambrecht, Rudolf Stephan, Heinz-Juergen Overhoff, Josef Schwaab, Claus Bernhard, Johann Swoboda, Adolf Echte
  • Production of tertiary amines
    Patent number: 4442306
    Abstract: Tertiary amines are produced by reacting a secondary amine having identical or different substituents, in particular a readily volatile amine, with a primary or secondary monohydric or polyhydric alcohol, in particular a sparingly volatile fatty alcohol, over a copper catalyst formed directly from copper formate under the reaction conditions.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Mueller, Hartmut Axel, Arnold Wittwer
  • Anthraquinone dyes
    Patent number: 4442287
    Abstract: Dyes of the formula ##STR1## where Hal is chlorine or bromine, X is hydrogen, hydroxyphenyl or alkoxyphenyl, n is 1 or 2, or, when X is hydroxyphenyl or alkoxyphenyl, may furthermore be O, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another are each unsubstituted or alkoxy-substituted alkyl, and R.sup.1 and R.sup.3 may furthermore be hydrogen, are of high color strength, and very useful for dyeing and printing cellulose-containing fiber material or cellulose swollen by means of water-miscible swelling agents.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Hartwig, Reinhold Krallmann
  • Apparatus for drying and heating nylon granules
    Patent number: 4439933
    Abstract: A vertical cylinder for drying and heating granules which includes an inlet at the top of the cylinder, a conically tapered outlet at the bottom of the cylinder, a rotatable screening ring beneath the inlet, a chute beneath the screening ring and a scraper above the ring inlets for gases in the downward extending section of the cylinder, a shell and tube heat exchanger located coaxially in the bottom quarter of the cylinder, a horizontally movable grid as flow control device below the heat exchange and a discharge zone below the grid.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: April 3, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Dietrich, Ernst Guenther, Werner Hoerauf, Ernst Kissel, deceased, Hermann Linge, Eckart Neumann, Eberhard Schaefer