Patents by Inventor Heinz Engelbach
Heinz Engelbach has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4814513Abstract: A process for the preparation of carbonyl compounds by oxidation of alcohols in the gas phase with a gas containing oxygen in the presence of catalysts containing copper or silver and a phosphorus compound that is volatile under the conditions of the reaction, the ratio of the mass of phosphorus to the mass of the alcohol being less than 0.5 ppm.Type: GrantFiled: December 9, 1987Date of Patent: March 21, 1989Assignee: BASF AktiengesellschaftInventors: Fritz Graf, Heinz Engelbach, Leopold Hupfer, Harald Schultheiss, Michael J. Sprague
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Patent number: 4814479Abstract: Aromatic nitriles, in particular phthalodinitriles, are prepared from an appropriately alkyl-substituted aromatic hydrocarbon by catalytic oxidation with oxygen or an oxygen-containing gas in the presence of ammonia at elevated temperatures in the vapor phase, in the presence of a catalyst which contains from 2 to 10% by weight of vanadium(V) oxide, from 1 to 10% by weight of antimony(III) oxide, from 0.02 to 2% by weight of an alkali metal oxide and alumina, by a process in which from 0.01 to 1.0% by weight of an alkaline earth metal, or of a compound of an alkaline earth metal, in particular barium or a barium compound, is added to the catalyst.Type: GrantFiled: November 13, 1986Date of Patent: March 21, 1989Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Roland Krokoszinski, Wolfgang Franzischka, Martin Decker
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Patent number: 4620035Abstract: Production of acrylic acid by oxidation of acrolein with gas containing oxygen in the gas phase at elevated temperature in the presence of a catalyst which, in addition to oxygen, consists essentially of (a) molybdenum, (b) tungsten, (c) vanadium and (d) iron and/or copper. The atomic ratio of molybdenum:tungsten:iron and/or copper is 1 to 20:0.01 to 10:1 and the atomic ratio of vanadium:molybdenum is 0.2 to 6:6. Acrylic acid is an important starting material for the production of high polymers.Type: GrantFiled: October 9, 1981Date of Patent: October 28, 1986Assignee: BASF AktiengesellschaftInventors: Richard Krabetz, Heinz Engelbach
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Patent number: 4503261Abstract: A process for the continuous preparation of glyoxal by oxidation of ethylene glycol, in which the ethylene glycol, oxygen and an inert gas are passed, at from 450.degree. to 800.degree. C., over a catalyst consisting of one or more layers of copper crystals and one or more layers of silver crystals, the copper and silver crystals having a particle size of from 0.1 to 2.5 mm.Type: GrantFiled: July 22, 1982Date of Patent: March 5, 1985Assignee: BASF AktiengesellschaftInventors: Wolfgang Sauer, Klaus Halbritter, Heinz Engelbach
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Patent number: 4392984Abstract: Catalysts, for olefin oligomerization, whose active material has the empirical formula IAPO.sub.4.[P.sub.2 O.sub.5.(H.sub.2 O).sub.n ].sub.a . (XY).sub.b Iwhere A is boron, antimony, bismuth, aluminum and/or 3 equivalents of titanium, X is NH.sub.4.sup..sym. and/or an alkali metal cation and/or one equivalent of an alkaline earth metal cation, Y is one equivalent of an anion, a is 0.02-0.2, b is 0-0.05 and n is 1-3, and a process for the preparation of these catalysts.Type: GrantFiled: March 25, 1981Date of Patent: July 12, 1983Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Werner Steigleiter, Helmut Glietenberg
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Patent number: 4305843Abstract: A coated catalyst comprising (a) an inert carrier having particles of not less than 100 .mu.m diameter and a surface area of up to 20 m.sup.2 /g and (b) a coating which contains the catalytic material and adheres firmly to the outer surface and to the edge zone, near the surface, of the carrier particles, can be prepared by applying the catalytic material as a 10-70% strength suspension in water to the agitated carrier particles, which are at below 70.degree. C., if the suspension is sprayed, at a constant rate of from 0.01 to 2.0 kg of active material/hour/liter of carrier onto the carrier particles, while at the same time uniformly passing from 0.1 to 12 m.sup.3 (S.T.P.)/hour/liter of carrier of an inert gas at from 20.degree. to 300.degree. C. over the carrier particles, under conditions such that the water only evaporates incompletely but the water content of the resulting coating is less than the maximum degree of saturation of the catalytic material.Type: GrantFiled: March 3, 1980Date of Patent: December 15, 1981Assignee: BASF AktiengesellschaftInventors: Richard Krabetz, Heinz Engelbach, Peter Palm, Heinrich Spahn, Walter Herrmann
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Patent number: 4298763Abstract: Acrolein and methacrolein are prepared advantageously by oxidizing propylene or isobutylene, respectively, with an oxygen-containing gas mixture under conventional conditions over a supported catalyst possessing a firmly adhering coating, from 150 to 1,500 .mu.m thick, which contains calcined catalytic material based on molybdenum oxide and has a carrier core with a surface area of less than 15 m.sup.2 /g and a diameter of more than 100 .mu.m, if a coated catalyst is used which has been prepared by applying calcined catalytic material having a particle size of from 0.1 to 300 .mu.m, in an amount of from 1 to 40 g/min/liter of carrier and water in a weight ratio of catalytic material to water of from 1:1 to 8:1, continuously and separately from one another, each at a constant speed, at below 100.degree. C.Type: GrantFiled: March 3, 1980Date of Patent: November 3, 1981Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Richard Krabetz, Gerd Duembgen, Carl-Heinz Willersinn, Walter Beitelschmidt
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Patent number: 4297247Abstract: A coated catalyst comprising (a) an inert carrier having a particle diameter of not less than 100 .mu.m and a surface area of up to 20 m.sup.2 /g and (b) a coating which firmly adheres to the outer surface and in the edge zone, near the surface, of the carrier particles, and which contains the catalytic material, can be prepared by applying the catalytic material in the form of a powder of particle size not more than 300 .mu.Type: GrantFiled: March 3, 1980Date of Patent: October 27, 1981Assignee: BASF AktiengesellschaftInventors: Richard Krabetz, Walter Herrmann, Heinz Engelbach, Peter Palm, Karl Sommer, Heinrich Spahn
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Patent number: 4282374Abstract: A process for the preparation of glyoxal by vapor phase oxidation of ethylene glycol with oxygen over a copper-containing oxidation catalyst at an elevated temperature and in the presence of a phosphorus compound which is volatile under the reaction conditions, the amount of phosphorus (calculated as P) being from 1 to 100 ppm, based on the weight of ethylene glycol.Type: GrantFiled: July 5, 1979Date of Patent: August 4, 1981Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Michael J. Sprague
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Patent number: 4259211Abstract: Catalysts which consist of a molded carrier, the surface of which is coated with an active catalyst composition of the general formula Mo.sub.12 A.sub.a B.sub.b C.sub.c D.sub.d O.sub.x, where A is V and/or W, B is Cu and/or Fe and/or Mn and/or Ni and/or Cr, C is Nb and/or Ta and/or Bi and/or Sb and/or Sn and/or Th and/or Ce and/or U, D is Li and/or Na and/or K and/or Rb and/or Cs and/or Tl and a is from 0.1 to 18, b is from 0 to 8, c is from 0 to 10, d is from 0 to 2 and x is from 36 to 135, which are particularly active and selective for the oxidation of acrolein and methacrolein with oxygen-containing gases to give acrylic acid and methacrylic acid, respectively, are obtained by first manufacturing the catalyst composition, before applying it to the carrier, from thermally easily decomposed salts of the components by mixing aqueous solutions, slurries or moist solid masses of the salts of the components, drying the mixture and calcining the dried composition at from 140.degree. to 600.degree. C.Type: GrantFiled: November 24, 1978Date of Patent: March 31, 1981Assignee: BASF AktiengesellschaftInventors: Richard Krabetz, Walter Herrmann, Norbert Scholz, Heinz Engelbach, Gerd-Juergen Engert, Carl-Heinz Willersinn, Gerd Duembgen, Fritz Thiessen
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Patent number: 4255285Abstract: Novel coated catalysts and a process for their preparation by atomizing a mixture of water and a vanadium-V compound, with or without other metal compounds, and applying this mixture to carrier particles which are themselves in motion, drying the coating and subjecting the catalyst particles, which are themselves in motion, to repeated brief treatment with a flame or plasma, followed by rapid cooling, defined temperatures and rates of coating being employed. The catalysts may be used with advantage for the preparation of anthraquinones by oxidation of indans.Type: GrantFiled: March 23, 1979Date of Patent: March 10, 1981Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Harry Hoffmann, Peter Palm, Karl Sommer, Michael J. Sprague
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Patent number: 4151182Abstract: The invention relates to a process for the production of anthraquinone by catalytic oxidation of indans or diphenylmethane derivatives with oxygen in the presence of a vanadium (V) compound with or without one or more than one compund of potassium, boron, thallium, antimony and/or caesium. Anthraquinone which can be prepared by the process according to this invention is a valuable starting material for the production of dyes and pesticides.Type: GrantFiled: May 9, 1977Date of Patent: April 24, 1979Assignee: Badische Anilin- & Soda-Fabrik AktiengesellschaftInventors: Heinz Engelbach, Hermann Wistuba, Michael J. Sprague, Hans-Juergen Sturm, Herbert Armbrust
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Patent number: 4110370Abstract: In the oxidation of propylene and/or acrolein, high-boiling or non-volatile byproducts are separated from the solvents used for absorbing the acrylic acid by treating the said solvents laden with byproducts with the hot reaction gases in such amounts that the major portion of the solvents evaporates, the residual solvent containing a high percentage of said byproducts then being discarded or worked up.Type: GrantFiled: October 7, 1975Date of Patent: August 29, 1978Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Richard Krabetz, Gerd Duembgen, Carl-Heinz Willersinn, Walter Frey, Ulrich Lebert, Fritz Thiessen
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Patent number: 4052450Abstract: In the oxidation of .alpha.-olefins in the gas phase to .alpha.,.beta.-olefinically unsaturated aldehydes and carboxylic acids with molecular oxygen in the presence of an inert gas using a catalyst containing molybdenum and bismuth with elements as oxides or mixed oxides at from 280.degree. to 450.degree. C a content of indium and/or aluminum and/or lanthanum and/or gallium as oxide or mixed oxide results in an improvement in the conversion and/or activity and/or life of the catalyst.Type: GrantFiled: October 10, 1973Date of Patent: October 4, 1977Assignee: BASF AktiengesellschaftInventors: Richard Krabetz, Heinz Engelbach, Ulrich Lebert, Walter Frey, Gerd Duembgen, Fritz Thiessen, Carl-Heinz Willersinn
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Patent number: 4036860Abstract: Anthraquinone is produced by oxidation of diphenylmethane compounds in the gaseous phase in the presence of oxygen-containing compounds of vanadium and titanium and at least one other metal in a specific ratio by weight. Anthraquinone prepared by the process of the invention is a starting material for the production of dyes and pesticides.Type: GrantFiled: August 25, 1975Date of Patent: July 19, 1977Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Michael Jolyon Sprague
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Patent number: 4031135Abstract: In the oxidation of propylene to acrylic acid in the gas phase in two spatially separate oxidation stages, a part of the off-gas, which has been freed from condensable products, is fed to the oxidation stages in addition to freshly charged propylene and air, under the following conditions:A. The recycled off-gas and air are in part fed to the first oxidation stage and in part to the second oxidation stage,B. The molar ratio of propylene : oxygen : residual gases fed to the first stage is 1 : 1.5-2.3 : 11-19,C. The molar ratio of the total propylene fed in, to the total oxygen fed in, in the form of air or off-gas, before and after the first stage, and to the total residual gases fed in is 1 : 1.9-2.5 : 13-25, with the proviso thatD. The air and the recycled off-gas are divided between the two feed points in such a way that from 10 to 50% by volume of the total quantity of air and off-gas fed in are added after the first stage andE.Type: GrantFiled: July 11, 1975Date of Patent: June 21, 1977Assignee: BASF AktiengesellschaftInventors: Heinz Engelbach, Richard Krabetz, Gerd Duembgen, Carl-Heinz Willersinn, Ulrich Lebert, Fritz Thiessen
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Patent number: 3932500Abstract: Acrylic acid practically devoid of water, acrolein, formaldehyde and acetic acid is obtained at particularly low cost by countercurrent scrubbing and quenching of the reaction gas formed in the catalytic oxidation of propylene and/or acrolein with a high-boiling, extremely hydrophobic solvent followed by processing of the extract.Type: GrantFiled: July 17, 1972Date of Patent: January 13, 1976Assignee: Badische Anilin- & Soda-Fabrik AktiengesellschaftInventors: Gerd Duembgen, Heinz Engelbach, Walter Frey, Richard Krabetz, Ulrich Lebert, Hermann Spitzl, Fritz Thiessen, Carl-Heinz Willersinn