Patents Assigned to Dynamit Nobel
  • Organosilane esters having glycol ether moieties
    Patent number: 4551541
    Abstract: The present invention relates to new organosilane esters which can be characterized by the formula Y-(CH.sub.2).sub.n Si(CH.sub.3).sub.p -X.sub.m Z.sub.3-(m+p). In this formula, Y represents either a substituted or unsubstituted amino group, or it represents the mercapto moiety or the moiety ##STR1## X represents an alkoxy group with 1 to 4 carbon atoms and Z a glycol ether moiety. The index n can assume the numerical values from 1 to 3, m can be 0 or 1 and p can be 0 or 1 or 2, on the condition that m+p is equal to or less than 2. The new silanes yield very stable hydrolyzates and have good adhesion-improving properties. They are therefore particularly well suited for use in sealing compositions.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: November 5, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Horst Hanisch
  • Laminate based on epoxy resin for printed circuits
    Patent number: 4550051
    Abstract: A laminate based on epoxy resin for printed circuits has epoxy resin-impregnated outer plies, each containing a substrate of glass fibers and epoxy resin-impregnated core plies, each containing a flat textile form or construction made of synthetic thermoplastic fibers.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: October 29, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Paul Spielau, Helmut Fassbender, Richard Weiss
  • Training cartridge with plastic projectile or dummy projectile
    Patent number: 4546704
    Abstract: A training cartridge has a plastic projectile or plastic dummy projectile wherein the projectile or dummy projectile is integrally molded on a synthetic resin sleeve open at the rear end. The sleeve is inserted in a cartridge case of metal open at its front end. The cartridge case with case shoulder and case neck formed thereon is made to be open also at the rear end so that the synthetic resin sleeve can be inserted from the rear end into the cartridge case in close contact with the inner wall thereof. A separate metallic bottom piece is inserted into the rear end of the cartridge case, sealing the case tightly toward the rear.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: October 15, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Kurt Ballreich, Ernst Jensen, Jurgen Knappworst
  • Hammock
    Patent number: 4542057
    Abstract: A hammock having a mat portion and loop-shaped arrangement at the head and foot ends of the mat portion to accommodate mounting dowels, said mat portion comprising an elastic crosslinked synthetic resin foam sheet, reinforced with a flat textile layer or organic and/or inorganic fibers, threads, strips, or the like, said sheet having a tensile strength of at least 0.20 N/mm.sup.2, a tear propagation resistance of at least 1.0 N/mm, and an ultimate elongation of at least 80%, with a gross density of about 30-130, preferably 30-80 kg/m.sup.3.
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: September 17, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hans-Ulrich Breitscheidel, Walter H. Anshen, Rudolf Kautz
  • Method for preparing cyanacetaldehyde acetals
    Patent number: 4541960
    Abstract: Cyanacetaldehyde acetals, which can be substituted at the alpha carbon atom, form in a high yield and purity by the transposition of the appropriately substituted 3-alkoxy-nitriles with alcohols in the presence of basic catalysts from the group of the alcoholates of the alkali or alkaline earth metals, followed by deactivation of the catalyst. Short reaction times and high yields combined with a minimum production of byproducts are achieved by the continuous performance of the transposition in the continuous-flow reactor.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: September 17, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Christoph Theis, Gudrun Fickert
  • Method for the modification of starch in an aqueous medium
    Patent number: 4540777
    Abstract: The present invention is in the modification of starch by silanes and is performed by bringing the starch into intimate contact with the hydrolyzates of the silanes in the presence of alkali aluminates or alkali hydroxides. Preferably this is done in the aqueous solution of the silane hydrolyzate, in which case the additives can be used either in aqueous solution or in solid form. The aluminate or alkali hydroxide is present at least in such an amount that 0.4 mol of aluminate will be present for each mole of silane. The modification is possible not only with alkyl alkoxysilanes, but also with organofunctional alkoxysilanes. The starch modified with the silanes has better practical properties than corresponding unmodified starch and can be used, for example, for the hydrophobation and oleophobation of cellulosic material.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: September 10, 1985
    Assignee: Dynamit Nobel AG
    Inventors: Jurgen Amort, Horst Hanisch, Ute Klapdor, Hendrikus van der Maas, Hans-Peter Suerken
  • Method of preparing 2-phenylethylchlorosilanes
    Patent number: 4537983
    Abstract: The present invention relates to a method of preparing 2-phenylethylchlorosilanes. Hydrogen chlorosilanes and styrene are used as starting products, and they are reacted together in the presence of benzothiazole. Benzothiazole is used at least in the same amount as the platinum catalyst. The preferred molar ratio of platinum catalyst to benzothiazole is between 1:2 and 1:50. The reaction can be performed with high yields of the 2-isomer, which is virtually free of the 1-isomer, at temperatures up to about 90.degree. C. At the same time, an excess pressure of up to 6 bar is easily tolerable without marked reduction of the yields of the desired product.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: August 27, 1985
    Assignee: Dynamit Nobel AG
    Inventors: Claus-Dietrich Seiler, Hans-Joachim Vahlensieck
  • Method of preparing acetals and enol ethers from acyloxymethylene compounds
    Patent number: 4534910
    Abstract: Enol ethers of the formula ##STR1## and/or the corresponding acetals can be obtained from acyloxymethylene compounds of the corresponding structure by reaction with the corresponding alcohol, in the presence of acid catalysts if desired.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: August 13, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hermann Peeters, Wilhelm Vogt, Christoph Theis
  • Aqueous curable molding compositions based on inorganic ingredients and process for the production of molded parts
    Patent number: 4533393
    Abstract: Molded parts having high flexural strength, based on alkali silicates, can be produced by casting and/or press-molding and curing by heating from aqueous molding compositions which are prepared from an oxide mixture containing amorphous silicic acid and aluminum oxide, as well as, optionally, as an additional component, aqueous, amorphous, disperse-powdery silicic acid, dissolved SiO.sub.2, and alkali from alkali silicate solutions, optionally alkali hydroxide or its aqueous solutions and, if desired, fillers, by means of mixing under agitation. By addition of a blowing agent inorganic foamed products can be obtained.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: August 6, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Karl H. Neuschaeffer, Paul Spielau, Gunter Zoche, Hans-Werner Engels
  • Method of preparing phthalide
    Patent number: 4528385
    Abstract: The present invention relates to the hydrogenation of phthalic acid anhydride to phthalide. A nickel catalyst of low nickel content is used as hydrogenation catalyst, and a benzoic acid alkyl ester as solvent. Small amounts of an alkanol can be added to the benzoic acid ester. On the basis of these specific conditions, the formation of by-products such as toluylic or phthalic acids in the hydrogenation is greatly diminished, and phthalide yields are obtained which, if the preferred conditions are maintained, can amount to as much as 90%.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: July 9, 1985
    Assignee: Dynamit Nobel AG
    Inventors: Helmut aus der Funten, Wilhelm Vogt
  • Method of preparing 3-alkoxy acrylonitriles
    Patent number: 4525310
    Abstract: 3-Alkoxy acrylonitriles are obtained directly from the corresponding nitriles by reaction of carbon monoxide and alcoholates followed by reaction with organic halides.
    Type: Grant
    Filed: February 16, 1983
    Date of Patent: June 25, 1985
    Assignee: Dynamit Nobel AG
    Inventors: Christoph Theis, Uwe Prange
  • Method of preparing p-orsellinic acid esters
    Patent number: 4524216
    Abstract: Resorcinols of the structure of p-orsellinic acid ester are obtained from pyrones of the formula ##STR1## by the action of no more than catalytic amounts of bases.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: June 18, 1985
    Assignee: Dynamit Nobel AG
    Inventor: Hans-Georg Schmidt
  • Machine base and process for manufacture thereof
    Patent number: 4522652
    Abstract: A support or base for low-vibration mounting of machines or the like is made by hardening a molding material in a mold. The base contains a hardened inorganic material with a density of 2.2 to 3.0, particularly 2.5 to 2.7 g/cm.sup.3, is made from(a) 15 to 30 weight % of an aqueous 30 to 65% potassium hydroxide-potassium silicate solution in which the SiO.sub.2 :K.sub.2 O molar ratio is 1.0 to 2.0:1;(b) 15 to 35 weight % of an oxide mixture containing amorphous SiO.sub.2 and aluminum oxide and/or hydrated amorphous silicic acid in the dispersed powder form and/or metakaolin;(c) 45 to 65 weight % of inorganic particulate fillers.The potassium silicate solution can be made by dissolving hydrated amorphous silicic acid in potassium hydroxide or its aqueous solution, and in this case, component (b) can consist entirely or partially of metakaolin.
    Type: Grant
    Filed: August 5, 1983
    Date of Patent: June 11, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Karl-Heinz Neuschaffer, Hans-Werner Engels, Hans-Jurgen Gebert, Robert W. Laube, Gunter Zoche
  • Spin-stabilized training missile
    Patent number: 4520972
    Abstract: A spin-stabilized training missile is equipped with a stabilizer device for reducing spinning in order to decrease the flight range. The training missile is designed so that its stabilization attainable solely by the spin upon firing is not sufficient for a stable flight in the practice range. The required additional stabilizing in the practice range is obtained by a stabilizer device or control airfoil effecting simultaneously, after leaving the practice range, such a spin reduction that the training missile becomes unstable and the range of flight is controlled.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: June 4, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Walter Diesinger, Axel Homburg
  • Forgery-proof flat article of a synthetic resin, and process for the production thereof
    Patent number: 4520063
    Abstract: A forgery-proof flat article, for example, for the production of banking cards, credit cards, and the like, is provided with a security feature analogous to a watermark and is made of thermoplastic and elastomeric synthetic resins based on transparent, translucent, or colored sheets made by extrusion, calendering, blow-molding, or spread coating, or composite sheets therefrom, with an application of a colorant, capable of migrating, to the surface in the presence of a crosslinkable component in the flat article and/or in the colorant application. The colorant application, upon reaching the desired migration depth of the applied colorant, is fixed in the flat article by a crosslinking reaction.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: May 28, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Manfred Simon, Karl-Heinz Spiess, Richard Weiss
  • Stable aqueous impregnating solutions prepared from hydrolyzed alkyltrialkoxysilanes
    Patent number: 4517375
    Abstract: This invention relates to solutions of silanols prepared by hydrolysis of alkyltrialkoxysilanes whose alkoxy groups are partially or completely hydrolyzed.Preferred hydrolyzed alkyltrialkoxysilanes are of the formula CH.sub.3 --CH.sub.2 --CH.sub.2 --Si(OH).sub.n (OH').sub.3-n.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: May 14, 1985
    Assignee: Dynamit Nobel AG
    Inventor: Werner Schmidt
  • Process for the preparation of alkali-metal formyl acid esters
    Patent number: 4515984
    Abstract: A process is described for the preparation of an alkali metal formyl acetic acid alkyl ester by reaction of acetic acid alkyl ester, an alkali-metal alcoholate and carbon monoxide at elevated pressure and elevated temperature, the improvement wherein an excess of acetic acid alkyl ester referred to the alkali-metal alcoholate is employed and the reaction is carried out in the absence of a solvent.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: May 7, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Moustafa El-Chahawi
  • Profile strip, especially for the production of window or door frames
    Patent number: 4514449
    Abstract: A profile strip, especially suitable for the production of window or door frames, has an optionally hollow core profile made from a glass fiber-reinforced PVC composition and a shell made from a synthetic resin compatible with PVC and exceeding the impact resistance of the core profile.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: April 30, 1985
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Wolfgang Budich, Bertram Gasper, Josef Kurth, Karl-Gunter Scharf, Waldemar Wissinger
  • Superrefractory dry ramming material based on zirconium oxide for the lining of induction-type crucible furnaces
    Patent number: 4513089
    Abstract: A superrefractory dry ramming material based on zirconium oxide for the lining of induction-type crucible furnaces comprising a zirconium oxide low in SiO.sub.2 and conventionally stabilized with CaO, MgO, Y.sub.2 O.sub.3, rare earths or their mixed oxides which has a particle size ranging from 0 to 8 mm, and from 5 to 40 weight percent finely divided monoclinic, fused zirconium oxide containing less than 0.5 weight percent SiO.sub.2.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: April 23, 1985
    Assignee: Dynamit Nobel AG
    Inventors: Peter Kummer, Gerhard Rehfeld
  • Sealing sheet of elastomeric synthetic resins with textile reinforcement on outer layer
    Patent number: 4511619
    Abstract: A sealing sheet for the building industry made up of at least one layer which contains an elastomeric synthetic resin that is devoid of, i.e., free of vulcanization accelerator, and that contains fillers, especially carbon admixed with an ethylene-propylene-diene terpolymer and/or ethylene-propylene copolymer and which has, on the outside and/or between layers of a synthetic resin, a reinforcing layer laminated in place with the use of heat and comprised of a fabric, a mat, a knitted material, a nonwoven material, or a similar material formed of a synthetic resin and/or of glass fibers.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: April 16, 1985
    Assignee: Dynamit Nobel AG
    Inventors: Werner Kuhnel, Peter Putz, Manfred Simm, Paul Spielau