Patents Represented by Law Firm Burgess, Dinklage & Sprung
  • Patent number: 4113761
    Abstract: A process for preparing an orthosilicic acid tetraalkyl ester having 2 to 6 carbon atoms in the ester group which comprises contacting metallic silicon with an alcohol corresponding to the ester group in the presence of the corresponding alkali alcoholate:A. in the presence of a surface active substance;B. in the presence of a compound containing a methoxy group; orC. under pressure at a temperature above the boiling point of the reaction mixture.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gerhard Kreuzburg, Arnold Lenz, Walter Rogler
  • Patent number: 4113537
    Abstract: A high-temperature-resistant nonwoven fabric comprising synthetic fibers bonded to one another, said fibers comprising at least one polyaryl amide, polyaryl imide, polyaryl ester or polyaryl anhydride, said fibers being resistant to temperatures up to about 350.degree. C and being resistant to prolonged exposure to a temperature of at least 200.degree. C, is produced by bonding a suitable nonwoven web employing a solution containing a swelling agent and/or a bonding agent for the fiber. If a bonding agent is present, it is of substantially the same composition as the fiber and is precipitated or coagulated by treating the impregnated web with a liquid miscible with the solvent of the solution but which is a non-solvent for the bonding agent. The fabric is washed and dried and then preferably calendered at high temperature so that all the polymeric material is crystallized.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: September 12, 1978
    Assignee: Firma Carl Freudenberg
    Inventors: Werner Schafer, Holger Buchwald, Dieter Bischoff
  • Patent number: 4113876
    Abstract: Sulfonic acid-N'-methylamido-N'-sulfenyl-N-methyl-carbamic acid esters of the formula ##STR1## in which R.sup.1 is dialkylamino with 1-4 carbon atoms in each alkyl group, phenyl substituted in the o- or m-position by halogen or by alkyl with 1-4 carbon atoms, or phenyl substituted in the o-, m- or p-position by NO.sub.2, CF.sub.3 or CN, andR.sup.2 is phenyl, naphthyl, benzodioxolanyl or indanyl; phenyl, naphthyl, benzodioxolanyl or indanyl substituted by trihalogenomethyl, halogen, nitro, cyano, formamidino, dioxanyl or dioxolanyl, or by alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto or dialkylamino wherein each hydrocarbon portion has 1-4 carbon atoms; cycloalkyl of 5-7 carbon atoms, or ##STR2## in which R.sup.3 and R.sup.4 each independently is cyano or alkyl, alkoxy, alkylthio or alkoxycarbonyl with 1-4 carbon atoms in each alkyl group, or R.sup.3 and R.sup.4 together form a ring, or, provided that R.sup.1 is a NO.sub.2 -substituted phenyl, R.sup.
    Type: Grant
    Filed: July 2, 1975
    Date of Patent: September 12, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Siegle, Engelbert Kuhle, Ingeborg Hammann, Bernhard Homeyer, Wolfgang Behrenz
  • Patent number: 4113969
    Abstract: In the preparation of a 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane-1-carboxylic acid ester of the formula ##STR1## in which Hal is halogen, andR.sup.1 is alkyl with 1 to 4 carbon atoms, by heating a 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane-1,1-dicarboxylic acid ester of the formula ##STR2## in an inert organic diluent, the improvement which comprises including a base in the diluent. Advantageously the base is 1,5-diazabicyclo[4.3.0]non-5-ene, 1,8-diazabicyclo[5.4.0]-undec-7-ene, triethylene diamine or quinuclidine and is employed in at least an equimolar amount with respect to the diester. The diluent is advantageously a hydrocarbon, a halogenated hydrocarbon or a high-boiling ether. The products are known intermediates for making insecticides.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: September 12, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Reinhard Lantzsch
  • Patent number: 4113860
    Abstract: O-Alkyl-O-[4-alkylpyrimidin(2)yl]-(thiono)-(thiol) phosphoric (phosphonic) acid esters of the formula ##STR1## in which R is alkyl with 1 to 9 carbon atoms,R.sub.1 is alkyl, alkoxy or alkylmercapto each with 1 to 6 carbon atoms, or phenyl,R.sub.2 is alkyl with 1 to 6 carbon atoms,R.sub.3 is hydrogen or halogen,R.sub.4 is halogen, thiocyanato or alkoxy, alkylmercapto or alkoxycarbonyl with 1 to 4 carbon atoms in each radical, andX is oxygen or sulfur, which possess insecticidal, acaricidal and nematocidal properties.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: September 12, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Fritz Maurer, Hans-Jochem Riebel, Bernhard Homeyer, Wolfgang Behrenz, Ingeborg Hammann, Wilhelm Stendel
  • Patent number: 4113741
    Abstract: Method for preparing phthalide by the catalytic dehalogenation of 3-chlorophthalide in the presence of hydrogenation catalyst and in the presence of an HCl acceptor.The phathalide which is produced is a valuable chemical intermediate for the manufacture of dyes, plant protecting agents and pharmaceuticals.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Helmut AUS DER Funten, Wilhelm Vogt
  • Patent number: 4113941
    Abstract: The reaction product from the enzymatic cleavage of amido side chains from .beta.-lactam antibiotics is purified by contact with a polymeric adsorbent.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: September 12, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Fritz Huper, Helmut Oberheiden
  • Patent number: 4113685
    Abstract: A flocculation, sedimentation, dehydration or retention composition comprising a stable dispersion of about 10 to 50% concentration by weight of a polymeric Mannich base in a mixture of water, a water-insoluble liquid and an emulsifier all present as a water-in-oil emulsion, the Mannich base comprising an NH-active polymer carrying carbonamide groups at least about 10% of which carry radicals of a reaction therewith of formaldehyde and a primary or secondary alkyl- or hydroxyalkyl-amine wherein the alkyl groups have up to about 18 carbon atoms, and a stabilizing amount of a water-soluble salt of a mono- or multivalent amine, alone or in admixture with a mono- or multivalent amine or ammonia, or of an ammonium salt of a mineral acid and ammonia, or of a carboxylic acid amide. The amine of the Mannich base is preferably dimethylamine or diethylamine and is used in approximately the same molar amount as the formaldehyde.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: September 12, 1978
    Assignee: Chemische Fabrik Stockhausen & Cie
    Inventors: Wolfgang Hubner, Eduard Barthell, Kurt Dahmen
  • Patent number: 4113747
    Abstract: Process for continuous production of propylene oxide (FIG. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5 , 12), and following drying of the benzene solution (16), the perpropionic acid in the solution is reacted with propylene (18) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (25, 27, 31, 33), and the latter two are recycled. In the benzene extraction (5, 12), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. Water is removed from the aqueous raffinate (8) and the concentrate is recycled to the propionic acid reactor. Make-up hydrogen peroxide can be added to the aqueous raffinate before the removal of water.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: September 12, 1978
    Assignees: Bayer Aktiengesellschaft, Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler
    Inventors: Gunter Prescher, Gerd Schreyer, Otto Weiberg, Rolf Wirthwein, Helmut Waldmann, Hermann Seifert, Wulf Schwerdtel, Wolfgang Swodenk
  • Patent number: 4113970
    Abstract: 1,4-Diacyloxybutene-2 is produced with a high yield by reacting 1,3-butadiene with a carboxylic acid, for example, acetic acid, and molecular oxygen in the presence of a catalyst containing metallic palladium and at least one iodine-containing substance selected from the group consisting of iodine, iodic acid, iodates, for example, alkali metal iodates and substituted and unsubstituted ammonium iodate, and iodides, for example, hydrogen iodide, alkali metal iodide and substituted and unsubstituted ammonium iodides, the ratio in gram-atom, of iodine to palladium in the above-mentioned catalyst being 0.1 to 1.5:1.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: September 12, 1978
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Masanori Tanabe, Masanori Ikeda, Nobuhiro Tamura
  • Patent number: 4113703
    Abstract: An improvement in an unsaturated polyesters having recurring units of the formula ##STR1## wherein A is the residue of an alcoholic moiety and B is the residue of an acid moiety, which improvement resides in the fact that some of the A residues are chloroxylylene containing residues having the formula ##STR2##
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Georg Blumenfeld, Norbert Vollkommer
  • Patent number: 4113904
    Abstract: A window composed of a frame having at least two, parallel disposed, spaced glass panes. At least one of the panes is composed of fire-resistant glass. The fire resistant pane can be a borosilicate or alumino silicate glass having a compressive prestress in the peripheral edge portion thereof, and for which the product of thermal expansion .alpha. and the elastic modulus E is 1-5 kp .times. cm.sup.-2 .times. .degree. C.sup.-1.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: September 12, 1978
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventor: Werner Kiefer
  • Patent number: 4113871
    Abstract: Phenyl-alkane-carboxylic acids of the formula ##STR1## wherein A is an aryl, aralkyl or arylvinyl radical optionally substituted by hydroxy, halogen, trifluoromethyl, alkyl, alkylthio, alkoxy, alkenyloxy, alkoxyalkoxy, alkyl-substituted amino, aryloxy or alkoxy-substituted aryloxy, or is an aryloxyalkyl or arylthioalkyl radical, or a heterocyclic ring system optionally substituted by halogen, alkyl or alkoxy,Y is a valency bond or an unbranched or branched lower alkylene radical containing up to 3 carbon atoms,X is a straight or branched, saturated or unsaturated divalent aliphatic hydrocarbon radical containing 2 to 8 carbon atoms, there being at least 2 carbon atoms between the benzene ring and the carboxyl group, andR is a hydrogen atom or a lower alkyl radical, as well as physiologically compatible salts, esters and amides thereof, exhibit hypoglycaemic and hypolipidaemic activity.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: September 12, 1978
    Assignee: Boehringer Mannheim GmbH
    Inventors: Kurt Stach, deceased, Elmar Bosies, Ruth Heerdt, Hans-Frieder Kuhnle, Felix Helmut Schmidt
  • Patent number: 4112046
    Abstract: In the disintegration of at least one chromium source selected from the group consisting of a SiO.sub.2 -containing chromite and a chromium-containing residue with an alkali compound at a temperature above about 800.degree. C in the presence of atmospheric oxygen and a lime-free diluent, followed by leaching of the mixture with at least one of water and/or a chromium (VI)-containing aqueous solution, the improvement which comprises including in the mixture to be disintegrated an aluminum compound and at least sufficient alkali to form alkali chromate and to convert the SiO.sub.2 into an alkali-aluminum silicate corresponding to the formula nMe.sub.2 O . mSiO.sub.2 . Al.sub.2 O.sub.3, wherein Me is at least one of sodium and potassium, 0.8 .ltoreq. n .ltoreq. 1.2 and 1.3 .ltoreq. m .ltoreq. 4.3.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: September 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans Niederprum, Johann-Nikolaus Meussdoerffer, Hans-George Nieder-Vahrenholz, Wolfgang Bockelmann
  • Patent number: 4111832
    Abstract: A process for regenerating a deactivated oxidation catalyst, especially one containing vanadium oxide, wherein the deactivated catalyst is treated with an aqueous solution of ammonia and/or an amine at an elevated temperature so as to dissolve at least a portion of the catalyst and the resultant solution or suspension is treated in a known manner to obtain the reactivated catalyst.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: September 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Rohbock, Rudolf Wiemers, Peter Woditsch, Reinhard Thiel
  • Patent number: 4111967
    Abstract: Catalysts for the catalytic oxidation of organic compounds containing silicon, vanadium, sulfur, oxygen and at least one alkali metal element. The catalyst is prepared from a silicic acid which has an average particle size of less than 50 microns and an alkali metal content of less than 2% by weight, calculated as Na.sub.2 O and expressed relative to anhydrous silicic acid.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: September 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Martin, Walter Schmidt, Gerhard Scharfe
  • Patent number: 4112005
    Abstract: The present invention relates to an improved continuous process for the preparation of mononitro-aromatic compounds which comprises (1) nitrating a reactive aromatic compound in the absence of sulphuric acid until mono-nitration is essentially complete, said nitration being carried out in 40 to 68% strength by weight nitric acid, (2) separating mechanically the nitration reaction mixture into an inorganic phase and an organic phase, (3) washing of the organic phase with water and dilute alkali solution and subsequent separation of the unconverted starting material end of the adhering water by means of rectification (4) feeding the inorganic phase and, if necessary, the wash water of the first water wash of the organic phase, to a rectification column in which (a) water is withdrawn over the top (b) optionally a fraction which has a lower nitric acid content than the feed is withdrawn from a sidestream takeoff in the rectifying section of the column and (c) a fraction which has a higher nitric acid content tha
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: September 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Werner Thiem, Adolf Hamers, Josef Heinen
  • Patent number: 4111933
    Abstract: In the process for preparing an organic compound of the formulaA' -- Xin whichX is an amino group, a hydroxyl group or a carboxyl group, andA' is the remainder of the molecule, from an organic compound of the formulaA -- Xin whichA is the remainder of the molecule which can undergo reaction to form A', by converting A -- X into a compound of the formulaA -- Z -- COORin whichZ is --NH--, --O-- or a direct C--C bond, andR is a radical of the formula ##STR1## IN WHICH Y is a direct C--C single bond, the --CH.dbd.CH-- group or an arylene group,R.sup.1 to R.sup.4 each independently is hydrogen, halogen or an alkyl, aryl, aralkyl, alkoxycarbonyl, alkylaminocarbonyl, arylaminocarbonyl or cycloalkylaminocarbonyl radical, orR.sup.1 + r.sup.2 and R.sup.3 + R.sup.4 each independently completes a 5- or 6-membered carbocyclic ring, orR.sup.1 and R.sup.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: September 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heiner Eckert, Ivar Ugi, Hans-Joachim Kabbe
  • Patent number: 4112221
    Abstract: Process for preparing 8,2'-O-anhydropurine nucleosides having a utility as intermediates for antiviral and anticarcinogenic drugs which comprises heating 2',3'-O-sulfinyl-8-oxypurine nucleosides in an aprotic polar solvent in the presence of an alkali metal, alkaline earth metal or ammonium salt of an inorganic or organic weak acid.
    Type: Grant
    Filed: July 10, 1975
    Date of Patent: September 5, 1978
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kozo Tsunoda, Tsuneo Sowa, Kunio Iitsuka, Kiyohide Sako
  • Patent number: 4111704
    Abstract: A printing paste for marking non-weldable areas in the manufacture of ducted plates. The paste is composed of approximately equal parts by weight of(A) a dispersion comprising about 5 to 60% by weight of titanium dioxide, about 0.10 to 4% by weight of magnesium montmorillonite, up to about 10% by weight of silica and the balance of water, and(B) a dispersion comprising about 25 to 35 parts by weight of alginate, about 50 to 70 parts by weight of chemically pure silica having a submicroscopic particle size, 2 to 4 parts by weight of highly concentrated ammonia solution, and about 1000 parts by weight of water.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: September 5, 1978
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Friedhelm Steinberg, Gunter Voss