Patents Assigned to Ruhrchemie Aktiengesellschaft
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Patent number: 4048233Abstract: In an oxo process, a gas mixture of approximately equal amounts of hydrogen and carbon monoxide for re-use in the process is made by catalytically cracking the "thick oil" residue from the oxo step at elevated temperatures in presence of water vapor and carbon dioxide over a supported metal catalyst.Type: GrantFiled: December 2, 1975Date of Patent: September 13, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Jurgen Falbe, Heinz-Dieter Hahn
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Patent number: 4042767Abstract: A method for avoiding decomposition of ethylene during polymerization in a tube form reactor having one or more side branches opening into the reactor wherein the diameter of the side branches is made to be not greater than about 12 mm and a flow number is maintained at between about 0.20 m.sup.2 /sec. and 0.55 m.sup.2 /sec, the flow number being defined as the product of the internal diameter of the tube reactor and the rate of flow of the reactant through the reactor. Flow numbers greater than 0.55 m.sup.2 /sec can be used as long as the diameter of the side branches is reduced to not more than 10 mm.Type: GrantFiled: February 9, 1976Date of Patent: August 16, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Wolfgang Payer, Volker Riepe, Wilhelm Zoller
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Patent number: 4041081Abstract: A process for the isolation of n-aldehyde from a mixture of n-aldehyde and i-aldehyde in a solvent by the addition of no more than a stoichiometric amount of an alkali metal hydrogen sulfite in aqueous solution to the mixture. The resulting precipitate is separated, washed, and later decomposed to yield substantially pure n-aldehyde.Type: GrantFiled: December 4, 1975Date of Patent: August 9, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Ludger Bexten, Heinz Noeske, Hans Tummes, Boy Cornils
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Patent number: 4041080Abstract: A process for the production of primary amines which comprises reacting compounds containing carbonyl groups with ammonia at a specific temperature, separating the water formed therefrom and hydrogenating the resulting product under pressure.Type: GrantFiled: November 20, 1973Date of Patent: August 9, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Herbert Gothel, Boy Cornils, Hans Feichtinger, Hans Tummes, Jurgen Falbe
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Patent number: 4039584Abstract: Isobutyraldehyde is cleaved to form propylene, carbon monoxide and hydrogen over a supported rhodium and/or platinum catalyst at a temperature of 200.degree. to 400.degree. C and a pressure of 0.1 to 20 atmospheres. Preferably the isobutyraldehyde is obtained from the oxo synthesis of n-butyraldehyde from propylene and the gases resulting from the cleavage are returned to the oxo synthesis step.Type: GrantFiled: November 19, 1975Date of Patent: August 2, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Jurgen Falbe, Hans Tummes, Heinz-Dieter Hahn
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Patent number: 4032692Abstract: A process is described for bonding or coating materials which comprises applying a molten olefin copolymer to a substrate. The copolymer is a terpolymer comprising about 70-90 parts by weight of ethylene, about 0.5-10 parts by weight of an ethylenically unsaturated carboxylic acid amide, and about 0.5 to 20 parts by weight of an ethylenically unsaturated carboxylic acid ester. The sum of the above parts by weight is equal to about 100.Type: GrantFiled: January 14, 1976Date of Patent: June 28, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Hans-Walter Birnkraut, Werner Kluy
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Patent number: 4013822Abstract: An olefin polymerization catalyst comprising a chromium compound deposited on a carrier, which chromium compound is complexed with a straight-chain, branched-chain, or cyclic aliphatic hydrocarbon or mixture thereof such that the mol ratio of aliphatic hydrocarbon to chromium compound is 1:2-3, said chromium compound being deposited on said carrier material in an amount between 10.sup..sup.-3 and 10 millimols chromium compound per gram of carrier material, said carrier material also containing a trialkyl, tricycloalkyl, triaryl, monohalodihydrocarbyl, or monoalkoxydihydrocarbyl aluminum compound; a process for preparing such an olefin polymerization catalyst and the use of such catalyst in the polymerization of olefins, particularly ethylene, propylene, 2-methylpropylene and butene-1.Type: GrantFiled: July 9, 1975Date of Patent: March 22, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Hans Feichtinger, Hans-Walter Birnkraut, Siegfried Lutze, Wolfgang Payer, Dieter Schnier
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Patent number: 4003921Abstract: An azomethine is produced by reacting a saturated or unsaturated aliphatic, cycloaliphatic, aromatic or heterocyclic aldehyde with ammonia and hydrogen in the presence of a catalyst containing at least one group VIII B metal at a temperature of 20.degree. to 200.degree. C. Preferably, the catalyst also contains at least one group VI B metal.Type: GrantFiled: May 1, 1975Date of Patent: January 18, 1977Assignee: Ruhrchemie AktiengesellschaftInventors: Werner Kluy, Hans Feichtinger, Jurgen Falbe
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Patent number: 3994846Abstract: A thermoplastic moulding material utilizing Polyethylene having a molecular weight above 1,000,000 is provided. Moulding properties are improved by adding to the polymerizate a diphenylthiourea of the general formula: ##SPC1##Where R, and R.sub.2 are selected from the group consisting of hydrogen, alkyl groups with 1 to 8 carbon atoms and alkoxy groups with 1 to 4 carbon atoms. R, and R.sub.2 may be the same or different. Lubricants may also be added to the polymerizate.Type: GrantFiled: January 26, 1976Date of Patent: November 30, 1976Assignee: Ruhrchemie AktiengesellschaftInventors: Bela Tihanyi, Arnolt Gerlicher
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Patent number: 3993695Abstract: A process for the separation of cobalt from the primary products of the Oxo-synthesis, which products contain dissolved cobalt-carbonyl compounds, which comprises adjusting the sulfur content of the primary products so that the sulfur content is at least 15 mg/kg of primary product and subjecting the primary products containing sulfur in at least said amount to a steam treatment and separating precipitated cobalt therefrom.Type: GrantFiled: September 13, 1973Date of Patent: November 23, 1976Assignee: Ruhrchemie AktiengesellschaftInventors: Hans Tummes, Boy Cornils, Josef Meis, Dieter Ernst, Hans-Joachim Tomuschat
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Patent number: 3988117Abstract: An improvement in a process of forming an aldehyde or alcohol by the Oxo process wherein an olefinically unsaturated hydrocarbon is reacted with carbon monoxide and hydrogen in the presence of a group VIII B catalyst which improvement involves introducing the olefinically unsaturated hydrocarbon, hydrogen and carbon monoxide together with the catalyst into the bottom of a first reaction zone, allowing the reactants to rise in said reaction zone, passing liquid reactants from the top of said first reaction zone into the top of a second reaction zone, withdrawing liquid reaction mixture from the bottom of the second reaction zone and withdrawing gaseous reactants from the second reaction zone.Type: GrantFiled: June 18, 1975Date of Patent: October 26, 1976Assignee: Ruhrchemie AktiengesellschaftInventors: Friedrich Schnur, Josef Hibbel, Boy Cornils
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Patent number: 3971690Abstract: A process is described for bonding or coating materials which comprises applying a molten olefin copolymer to a substrate. The copolymer is a terpolymer comprising about 70-90 parts by weight of ethylene, about 0.5-10 parts by weight of an ethylenically unsaturated carboxylic acid amide, and about 0.5 to 20 parts by weight of an ethylenically unsaturated carboxylic acid ester. The sum of the above parts by weight is equal to about 100.Type: GrantFiled: July 10, 1974Date of Patent: July 27, 1976Assignee: Ruhrchemie AktiengesellschaftInventors: Hans-Walter Birnkraut, Werner Kluy
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Patent number: 3956253Abstract: A polyethylene composition of high wear resistance and a method of preparing it which comprises a polyethylene prepared according to a low pressure polymerization process and which has a molecular weight above about 1,000,000, containing an organic peroxide cross-linking agent homogeneously dispersed in the polymer, which has been pre-compressed at a high pressure, plasticized at elevated temperature and pressure and cooled.Type: GrantFiled: September 5, 1975Date of Patent: May 11, 1976Assignee: Ruhrchemie AktiengesellschaftInventor: Gunther Braun
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Patent number: 3953332Abstract: An improvement in a process for separating waste water from a water insoluble organic liquid which is lighter than water and a water insoluble solid which is heavier than water wherein said waste water, organic liquid and solids are introduced into an introduction zone of a gravity separator, thereafter passed through a separation zone of said separator and a water phase is removed from said separator, which improvement comprises a higher purity of waste water by avoiding diminuation of the temperature of the components in said separation zone below the temperature of the waste water at the entrance of the separator by adjusting the temperature in the introduction zone to prevent flocculation of solids in said separation zone.Type: GrantFiled: June 27, 1974Date of Patent: April 27, 1976Assignee: Ruhrchemie AktiengesellschaftInventors: Sebastian Speth, Georg Kuppenbender, Willi Jansen
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Patent number: 3943194Abstract: Flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1:99.Type: GrantFiled: October 1, 1974Date of Patent: March 9, 1976Assignees: Hoechst Aktiengesellschaft, Ruhrchemie AktiengesellschaftInventors: Franz-Josef Dany, Joachim Wortmann, Peter Munch, Gunther Braun
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Patent number: 3931081Abstract: Improved flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1:99.The improved moulding compositions contain as a stabilizerA. between about 1 and 10 weight % of amidosulfonic acid or ammonium bisulfate, based on the total quantity of the flame-retardant ingredients, orB. between about 5 and 15 weight % of a paraffin oil having a density between about 0.83 and 0.88 g/cc and a viscosity between about 15 and 380 centipoises, or of a mineral oil boiling within the range 170.degree. and 350.degree.Type: GrantFiled: June 25, 1974Date of Patent: January 6, 1976Assignees: Hoechst Aktiengesellschaft, Ruhrchemie AktiengesellschaftInventors: Franz-Josef Dany, Joachim Wortmann, Peter Munch, Gunther Braun, Rudolf Kern
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Patent number: 3931101Abstract: Flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1.99.Type: GrantFiled: May 21, 1973Date of Patent: January 6, 1976Assignees: Hoechst Aktiengesellschaft, Ruhrchemie AktiengesellschaftInventors: Franz-Josef Dany, Joachim Wortmann, Peter Munch, Gunther Braun