DE842200C - Process for the production of diamino-dicyclohexylmethanes, their homologues and substitution products - Google Patents

Process for the production of diamino-dicyclohexylmethanes, their homologues and substitution products

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Publication number
DE842200C
DE842200C DEB4959A DEB0004959A DE842200C DE 842200 C DE842200 C DE 842200C DE B4959 A DEB4959 A DE B4959A DE B0004959 A DEB0004959 A DE B0004959A DE 842200 C DE842200 C DE 842200C
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DE
Germany
Prior art keywords
diamino
dicyclohexylmethanes
homologues
substitution products
production
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
DEB4959A
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German (de)
Inventor
Otto Dr Stichnoth
Ludwig Wolf
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.)
BASF SE
Original Assignee
BASF SE
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Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to DEB4959A priority Critical patent/DE842200C/en
Application granted granted Critical
Publication of DE842200C publication Critical patent/DE842200C/en
Expired legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00Systems containing only non-condensed rings
    • C07C2601/12Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14The ring being saturated

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Description

Verfahren zur Herstellung von Diamino-dicyclohexylmethanen, ihren Homologen und Substitutionsprodukten Es wurde gefunden, daß man Diaminc-dicyclohexylmethane leicht und in sehr guter Ausbeute herstellen kann, wenn man die entsprechenden Diamino-diphenylmethane in hydrophoben Lösungsmitteln in Gegenwart von Hydrierungskatalysatoren und Erdalkalioxyden bei Temperaturen über 200° und Drucken über Zoo at -mit Wasserstoff behandelt.Process for the production of diamino-dicyclohexylmethanes, their Homologues and substitution products It has been found that diaminc-dicyclohexylmethane can be produced easily and in very good yield if you use the corresponding diamino-diphenylmethane in hydrophobic solvents in the presence of hydrogenation catalysts and alkaline earth oxides Treated with hydrogen at temperatures above 200 ° and pressures above Zoo at.

Als Ausgangsstoffe eignen sich alle isomeren 1)iamino-diphenylmethane und ihre Homologen und Substitutionsprodukte, z. B. 4, 4'-Diamino-diphenylmethan, 2, 2'-Diaminc-diphenylmethan oder 3, 3'-Dimethyl-4, 4'-Diaminc-diphenylmethan. Geeignete Hydrierungskatalysatoren sind z. B. Nickel, Kobalt oder Kupfer. Als hydrophobe Lösungsmittel seien Cyclohexan und hydrierte Naphthaline, ferner aliphatische Kohlenwasserstoffe, wie Ligroin, genannt.All isomeric 1) iamino-diphenylmethanes are suitable as starting materials and their homologues and substitution products, e.g. B. 4,4'-diamino-diphenylmethane, 2, 2'-diamine-diphenylmethane or 3, 3'-dimethyl-4, 4'-diamine-diphenylmethane. Suitable Hydrogenation catalysts are e.g. B. nickel, cobalt or copper. As a hydrophobic solvent are cyclohexane and hydrogenated naphthalenes, also aliphatic hydrocarbons, called like ligroin.

Man hat zwar bereits 4, 4'-Diamino-diphenylmethan mit Hilfe von Nickel- oder Kobaltkatalysatoren unter Zusatz von Kalk zu 4, 4'-Diamino-dicyclohexylmethan hydriert, hat dabei aber ohne Lösungsmittel gearbeitet und nur schlechte Ausbeuten erhalten. Es war' nicht ohne weiteres vorauszusehen, daß man 'bei Mitverwendung hydrophober Lösungsmittel eine wesentliche Verbesserung der Ausbeute erreichen würde, zumal da die Änsbeüte erheblich sinkt, wbnn man hydrophile Lösungsmittel wie Tetrahydrofuran, Cyclohexanel-, oder Cyclohexylamin hinzufügt.One has already 4,4'-diamino-diphenylmethane with the help of nickel or cobalt catalysts with the addition of lime to 4,4'-diamino-dicyclohexylmethane hydrogenated, but worked without a solvent and only poor yields obtain. It was 'not to be foreseen without further ado that' if one were also used hydrophobic solvent would achieve a significant improvement in the yield, especially since the consistency drops considerably, hydrophilic solvents are used such as tetrahydrofuran, cyclohexanel, or cyclohexylamine.

Die nach dem vorliegenden Vezfahren bequem und in nahezu quantitativen Ausbeuten erhältlichen Diamino-dicyclohexylmethane sind wertvolle Zwischer.-produkte, insbesondere für Kunststoffe, `'Weichmacher' und Textilhilfsmittel.According to the present method, it is convenient and almost quantitative Diamino-dicyclohexylmethanes obtainable in yields are valuable intermediate products, especially for plastics, 'plasticizers' and textile auxiliaries.

Die im Beispiel angegebenen Teile sind Gewichtsteile.The parts given in the example are parts by weight.

Beispiel Zu einer Lösung von Zoo Teilen 4, 4'-Diaminodiphenylmethan in i5o Teilen Cyclohexan fügt man 15 Teile Calciumoxyd und io Teile. Kobältoxyd Lind preßt auf das Gemisch im Rührautoklav bei 215 bis 22o° Wasserstoff von 220 at auf. Die Wasserstoff-. aufnahme ist nach etwa 8 Stunden beendet. Durch Destillation des von den anorganischen Anteilen abfiltrierten Reaktionsproduktes erhält man das Cycloheäcan zurück" und 'aus dem 'Rückstand ' igr Teile 4, 4'-Diamino-dicyclohexylmethan vom Siedepunkt igo bis 1g5° bei 8 mm Druck.Example To a solution of Zoo parts 4, 4'-diaminodiphenylmethane 15 parts of calcium oxide and 10 parts are added to 150 parts of cyclohexane. Cobalt oxide Lind presses on the mixture in a stirred autoclave at 215 to 220 ° hydrogen of 220 at on. The hydrogen. recording ends after about 8 hours. By distillation the reaction product filtered off from the inorganic components is obtained Cycloheacan back "and 'from the' residue 'igr parts 4, 4'-diamino-dicyclohexylmethane from the boiling point igo to 1g5 ° at 8 mm pressure.

Führt man die, Hydrierung unter denselben Bedingungen in Tetrahydrofuran, Cyclohexanol oder Cyclohexylamin durch, so erhält man nur 13o bis 14a Teile 4, 4'-Diamino-dicyclohexylmethan, arbeitet man ohne Lösungsmittel, so erhält man nur etwa igo bis 165 Teile.If the hydrogenation is carried out under the same conditions in tetrahydrofuran, Cyclohexanol or cyclohexylamine through, you get only 13o to 14a parts of 4,4'-diamino-dicyclohexylmethane, if you work without a solvent, only about igo to 165 parts are obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Diamino-dicyclohexylmethanen, ihren Homologen und Substitutionsprodukten durch katalytische Hydrierung entsprechender Diamino-diphenylmethane bei mindestens Zoo at Druck und Temperaturen über 2oo° in Gegenwart von Hydrierungskatalysatoren und Erdalkxlioxyden, dadurch gekennzeichnet, daB man in Gegenwart hydrophober Lösungsmittel arbeitet. PATENT CLAIM: Process for the preparation of diamino-dicyclohexylmethanes, their homologues and substitution products by catalytic hydrogenation of corresponding diamino-diphenylmethanes at at least zoo at pressure and temperatures above 2oo ° in the presence of hydrogenation catalysts and alkaline earth oxydes, characterized in that one works in the presence of hydrophobic solvents.
DEB4959A 1950-06-18 1950-06-18 Process for the production of diamino-dicyclohexylmethanes, their homologues and substitution products Expired DE842200C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB4959A DE842200C (en) 1950-06-18 1950-06-18 Process for the production of diamino-dicyclohexylmethanes, their homologues and substitution products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB4959A DE842200C (en) 1950-06-18 1950-06-18 Process for the production of diamino-dicyclohexylmethanes, their homologues and substitution products

Publications (1)

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DE842200C true DE842200C (en) 1952-06-23

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DEB4959A Expired DE842200C (en) 1950-06-18 1950-06-18 Process for the production of diamino-dicyclohexylmethanes, their homologues and substitution products

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1618174B1 (en) * 1967-06-10 1971-04-22 Basf Ag Process for the continuous production of diamino-dicyclohexylalkanes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1618174B1 (en) * 1967-06-10 1971-04-22 Basf Ag Process for the continuous production of diamino-dicyclohexylalkanes

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