DE944013C - Process for splitting organic hydroperoxides - Google Patents

Process for splitting organic hydroperoxides

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Publication number
DE944013C
DE944013C DEB25537A DEB0025537A DE944013C DE 944013 C DE944013 C DE 944013C DE B25537 A DEB25537 A DE B25537A DE B0025537 A DEB0025537 A DE B0025537A DE 944013 C DE944013 C DE 944013C
Authority
DE
Germany
Prior art keywords
sulfuric acid
splitting
organic hydroperoxides
acetone
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEB25537A
Other languages
German (de)
Inventor
Dr Ermbrecht Rindtorff
Dr Karl Schmitt
Dr Heinrich Sodomann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bergwerksgesellschaft Hibernia AG
Original Assignee
Bergwerksgesellschaft Hibernia AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bergwerksgesellschaft Hibernia AG filed Critical Bergwerksgesellschaft Hibernia AG
Priority to DEB25537A priority Critical patent/DE944013C/en
Application granted granted Critical
Publication of DE944013C publication Critical patent/DE944013C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/02Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
    • C07C303/04Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups
    • C07C303/06Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups by reaction with sulfuric acid or sulfur trioxide

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zum Spalten von organischen Hydroperoxyden Es. ist .bekannt, Cumolhy@droperoxyd, gelöst in Cumol und gegebenenfalls Aceton, mit Schwefelsäure durch eine enge Röhre mit einer derartigen Geschwindigkeit zu führen, daB eine tuibu,lentbe Strömung bewirkt wird. Die Länge der Röhre wird hierbei so gewählt, daB die Zersetzung des Hydroperoxyds in Phenol und Aceton nahezu vollständig vor sich geht. Im -günstigsten Fall erhält man nach. -diesem Verfahren. beim Anbei,ten bei 6o° und nach 30 Minuten eine Zersetzung von 98,2% und eine Ausbeute an Phenol von 9r %. Wählt man @die Bedingungen so, -daß man nahezu eine quantitative Ausbeute an Phenol erhält, so sinkt die Ausbeute an Aceton auf etwa 700/e.Process for the cleavage of organic hydroperoxides Es. is known, Cumolhy @ droperoxide, dissolved in cumene and optionally acetone, with sulfuric acid through a narrow tube at such a speed that a tuibu, lentbe Flow is caused. The length of the tube is chosen so that the decomposition of the hydroperoxide in phenol and acetone takes place almost completely. In the cheapest Case is obtained after. -This procedure. when attached at 60 ° and after 30 minutes a decomposition of 98.2% and a phenol yield of 91%. If you choose @the conditions so -that one obtains an almost quantitative yield of phenol, the yield decreases of acetone to about 700 / e.

Es wurde gefunden, da.B die Spaltung der Hydroperoxyde besonders volltstämidig und ohne die Bildung Mengen vom. Nebenprodukten verläuft, wenn, man (die Spaltung in einer Kreiselpumpe vornimmt, die nur mit einem Bruchteil ihrer normalen. Füllung beschickt wird, und die Säure in einer Menge zur Anwendung bringt, die zur Abführung,der Hauptmenge der Reaktionswärme aus- reicht. Die Reaktionswärme wird in einem unmit- telbar nachgeschalteten Kühler aus dem Reaktions- gemisch -abgeführt. Außerdem kann., eine Kühlung der als Wärmeabführungsmittel dienenden Mineral- säure nach einfacher mechanmscher Abtrennung von dem Spaltprodukt durch entsprechende nachgesähäl-- tete Kühlvorrichtungen. erreicht werden. Auf diese Weise verbleibt trotz vollständiger Spaltung (der _ Hydroperoxyde das - Reakirionsgemisch nur eine kurze Zeit im Reaktionsgefäß. Die anfallenden Spaltprodukte zeichnen sich durch besönd4#rs_groBe Reinheit aus, was. -für ihre Isolierung und Rein- danstellung vom, ausschlagge)#nder Bedeutung ,ist. Der Durchsatz. durch:, das Reaak-tionsgefäß kann durch Verwendung von U.ltra'scliällwellen wesent- lich gesteigert werden. B,cispielsweise verwendet man- 500/äige Schwefel- säure, deT man,. Aceton his zum spez. Gewicht von I,325 (bei 15° Deigemlischt :hat. -Die Schwefelsäure wird umgepumpt und @rn System durch Kühlung eine Temperatur von 2o° eingestellt. Das Hydro- peroxyd wird von einem- Hochbehälter übe=r einen- Kühler'der Spaltpumpe zugeführt, in der es mit der Schwefelsäure innigst gemischt und dabei ge- spä-Iten wird,, wobei z. B.- 14 Valürnteile H2 S 04 auf i Volumteil Hydroperoxyd kämmen. Das Gemisch. geht über einen nachgeschalteten Kühler, gibt hier Aden. Rest der Reaktionswärme ab und fließt über einen; mit einer -Kühlung versehenen Rührbehälter in .eine Fldrantinerflasahe. Die ab- geschiedene Schwefelsäure du;rehfließt einen weä- teren Kühler und-geht zur SchwefeIsäurevorlage, von. wo sie wieder der Spaltpumpe zufließt. Das abgeschiedene Spaltprodukt . durcMäuft eine. zweite Florentinerflasche zwecks -weiterer, Abtrennung von Schwefelsäure, passiert eineNeutrald..sationsbatterie, fließt einem Vorratsbehälter zu und geht dann zur Destillation. B ei;s.pv e@l 1 Cumolhydroperoxyd (410/aig) Theorie: Gefunden: -Phenäl ... , ....... 25,30/0 23,8% Aceton ......:........ 15,70/0 15;20/a. Beispiel 2 Cymolhydroperoxyd (38%ig) Theorie: Gefunden: p-Kresol . . . . . . . .-. . . . . . . . 2-4,70/0 23,3 0/a - Aceton . . . . . . . . . . . . . . . . 13,30/0 g 12,8'0/0. _ B e is p ie,l 3- . Isop-ropylnaphthalin- hydröp1#lroxyd. (39,5%ig) .- Theorie: Gefunden: Na:phthol............... 29,30/a - 27,50/0 Aceton . . . . . . . . . . . . . . 10,20/0 9,70/0. It has been found that the cleavage of the hydroperoxides is particularly complete and without the formation of amounts of. By-products occur when the cleavage is carried out in a centrifugal pump, which is only charged with a fraction of its normal charge, and the acid is used in an amount that removes most of the heat of reaction. enough. The heat of reaction is immediately directly downstream cooler from the reaction mixture discharged. Can also., A cooling the mineral used as a heat dissipation agent acid after simple mechanical separation of the cleavage product by re-sawning tete cooling devices. can be achieved. To this In spite of a complete split (the _ Hydroperoxides the - reaction mixture only one a short time in the reaction vessel. The accruing Fission products are characterized by besönd4 # rs_groBe Purity from what. -for their isolation and clean- in addition to the, decisive) meaning is. The throughput. through :, the reaction vessel can through the use of U.ltra'scliäll shafts essential can be increased. B, for example, one uses 500 / ae acid, deT man ,. Acetone up to the spec. weight of I, 325 (at 15 ° Deigmixed: has. -The sulfuric acid is circulated and @rn system by cooling set a temperature of 20 °. The hydro peroxide is transferred from an elevated tank over a The cooler is fed to the gap pump, in which it is connected to the sulfuric acid intimately mixed and later becomes ,, where z. B.- 14 Valur parts H2 S 04 Comb the hydroperoxide to one part by volume. That Mixture. goes through a downstream cooler, there's aden here. Rest of the heat of reaction from and flows over one; provided with a cooling Stirring container in a Fldrantiner bottle. The ab- divorced sulfuric acid you; lower cooler and-goes to the sulfuric acid reservoir, from. where it flows back to the gap pump. That deposited fission product. runs through a. second Florentine bottle for the purpose of further, separation of Sulfuric acid, passes through a neutralization battery, flows to a storage container and then goes to distillation. B ei; s.pv e @ l 1 Cumene hydroperoxide (410 / aig) Theory: Found: -Phenäl ..., ....... 25.30 / 0 23.8% Acetone ......: ........ 15.70 / 0 15; 20 / a. Example 2 Cymol hydroperoxide (38%) Theory: Found: p-cresol. . . . . . . .-. . . . . . . . 2-4.70 / 0 23.3 0 / a - Acetone. . . . . . . . . . . . . . . . 13.30 / 0 g 12.8'0 / 0. _ Ex ample, l 3-. Isopylnaphthalene hydröp1 # lroxyd. (39.5%) .- Theory: Found: Na: phthol ............... 29.30 / a - 27.50 / 0 Acetone. . . . . . . . . . . . . . 10.20 / 0 9.70 / 0.

Claims (1)

PATENTANSPRUCH: Verfahren zum Spalten von 'organischen Hydropdroxyden mit Minetratsäuren, insbe:s'on- -dere Schwefelsäure, -dadurch gekennzeichnet, daß man @die Spaltung in einer Kreiselpumpe vornimmt, die nur mit einem Bruchteil ihrer normalen Füllung beschickt wird, und die Säure in einer Menge zur Anwendung bringt, die zur- Abführung -der Hauptm_ enge der Reak- tionswärme. ausreicht.-- Angezogene Druckschriften: Deutsche Patentschrift .Nr.. 86.1996;' britische -Patentschriften-.Nr. 67o 444, 689 734:; französiBehe Patentschrlift N=:-961 o,22.
PATENT CLAIM: Method of splitting 'organic Hydroxides with mineral acids, especially: s'on- - the sulfuric acid, - characterized by, that one @ the split in a centrifugal pump doing that with just a fraction of theirs normal filling is loaded, and the Uses acid in an amount the discharge -the main area of the reac- tion heat. sufficient .-- Referred publications: German Patent No. 86.1 996; ' British patent no. 67o 444, 689 734 :; French patent letter N =: - 961 o, 22.
DEB25537A 1953-05-09 1953-05-09 Process for splitting organic hydroperoxides Expired DE944013C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB25537A DE944013C (en) 1953-05-09 1953-05-09 Process for splitting organic hydroperoxides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB25537A DE944013C (en) 1953-05-09 1953-05-09 Process for splitting organic hydroperoxides

Publications (1)

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DE944013C true DE944013C (en) 1956-06-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR961022A (en) * 1947-02-13 1950-04-28
GB670444A (en) * 1949-06-03 1952-04-16 Distillers Co Yeast Ltd Manufacture of phenol
DE861996C (en) * 1942-10-08 1953-01-08 Siemens Ag Method and device for the treatment of liquids by means of ultrasound and ultraviolet rays
GB689734A (en) * 1949-04-29 1953-04-01 Distillers Co Yeast Ltd Decomposition of organic peroxides

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861996C (en) * 1942-10-08 1953-01-08 Siemens Ag Method and device for the treatment of liquids by means of ultrasound and ultraviolet rays
FR961022A (en) * 1947-02-13 1950-04-28
GB689734A (en) * 1949-04-29 1953-04-01 Distillers Co Yeast Ltd Decomposition of organic peroxides
GB670444A (en) * 1949-06-03 1952-04-16 Distillers Co Yeast Ltd Manufacture of phenol

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