ES2166920T3 - Procedimiento para la separacion de sustancias de alto punto de ebullicion en la preparacion de diaminotolueno. - Google Patents

Procedimiento para la separacion de sustancias de alto punto de ebullicion en la preparacion de diaminotolueno.

Info

Publication number
ES2166920T3
ES2166920T3 ES97102725T ES97102725T ES2166920T3 ES 2166920 T3 ES2166920 T3 ES 2166920T3 ES 97102725 T ES97102725 T ES 97102725T ES 97102725 T ES97102725 T ES 97102725T ES 2166920 T3 ES2166920 T3 ES 2166920T3
Authority
ES
Spain
Prior art keywords
tda
high point
mixture
procedure
preparation
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 - Lifetime
Application number
ES97102725T
Other languages
English (en)
Inventor
Heiko Dr Beckhaus
Harro Dr Witt
Uwe-Jens Dr Zarnack
Gerd Greger
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Application granted granted Critical
Publication of ES2166920T3 publication Critical patent/ES2166920T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/82Purification; Separation; Stabilisation; Use of additives
    • C07C209/86Separation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/82Purification; Separation; Stabilisation; Use of additives
    • C07C209/84Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

SE DESCRIBE UN PROCEDIMIENTO PARA EL PROCESADO DE MEZCLAS AMINICAS DE LA PREPARACION DE DIAMINO-TOLUOL A PARTIR DE LA HIDROGENACION DE DINITROCOMPUESTOS AROMATICOS, EN LA CUAL DESPUES DE RETIRAR EL AGUA QUE SE HA FORMADO, Y OPCIONALMENTE DEL DISOLVENTE, SE SEPARA POR DESTILACION DE LA MEZCLA DE ISOMEROS DE DIAMINOTOLUOL (MEZCLA TDA) Y MEDIANTE UNA COLUMNA DE DESTILACION DE LOS ISOMEROS DE TDA, LOS ISOMEROS DE TDA CON BAJO PUNTO DE EBULLICION, CARACTERIZADO PORQUE A) SE SEPARAN LOS M-TDA Y COMPUESTOS CON ALTO PUNTO DE EBULLICION QUE SE HAN QUEDADO EN EL RESIDUO, Y SE CONCENTRAN HASTA APROXIMADAMENTE DEL 25 AL 60 % EN PESO DEL CONTENIDO EN COMPUESTOS CON ALTO PUNTO DE EBULLICION, B) LA FASE DEL RESIDUO CONCENTRADA SE MEZCLA CON UNA RELACION 1:1 HASTA 1:5 CON UNA MEZCLA DE ISOMEROS ORTO DE TDA Y SE DESTILA UNA MEZCLA M/O-TDA, Y A CONTINUACION C) LA MEZCLA DE TDA OBTENIDA EN B) SE RECICLA A LA COLUMNA DE DESTILACION DE ISOMEROS DE TDA.
ES97102725T 1996-03-05 1997-02-20 Procedimiento para la separacion de sustancias de alto punto de ebullicion en la preparacion de diaminotolueno. Expired - Lifetime ES2166920T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19608443A DE19608443C1 (de) 1996-03-05 1996-03-05 Verfahren zur Aufarbeitung von Amingemischen bei der Diaminotoluol-Herstellung unter Abtrennung der Schwersieder

Publications (1)

Publication Number Publication Date
ES2166920T3 true ES2166920T3 (es) 2002-05-01

Family

ID=7787260

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97102725T Expired - Lifetime ES2166920T3 (es) 1996-03-05 1997-02-20 Procedimiento para la separacion de sustancias de alto punto de ebullicion en la preparacion de diaminotolueno.

Country Status (7)

Country Link
US (1) US5728880A (es)
EP (1) EP0794170B1 (es)
JP (1) JPH09241223A (es)
CA (1) CA2198815A1 (es)
DE (2) DE19608443C1 (es)
ES (1) ES2166920T3 (es)
TW (1) TW353061B (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777560B1 (fr) * 1998-04-17 2000-06-09 Rhodia Chimie Sa Procede de purification de polyamines aromatiques
DK0994112T3 (da) * 1998-09-10 2002-09-02 Basf Ag Fremgangsmåde til fraskillelse af forureninger fra 3-(2'-acetoxyethyl)-dihydro-2(3H)furanon
US6359177B1 (en) * 2000-12-15 2002-03-19 Bayer Corporation Process for separating mixtures of materials having different boiling points
DE10349095A1 (de) * 2003-10-17 2005-05-19 Basf Ag Verfahren zur Herstellung von Aminen
DE102004001456A1 (de) * 2004-01-08 2005-08-11 Basf Ag Verfahren zur destillativen Aufbereitung von Toluylendiamin
KR101200218B1 (ko) * 2004-06-01 2012-11-09 바이엘 머티리얼사이언스 아게 아민 수용액 증류적 분리 방법
DE102004026626A1 (de) * 2004-06-01 2005-12-29 Bayer Materialscience Ag Verfahren zur destillativen Trennung von wässrigen Aminlösungen
DE102005032430A1 (de) * 2005-07-12 2007-01-25 Bayer Materialscience Ag Verfahren zur Herstellung von Toluylendiamin
CN100455559C (zh) * 2006-11-08 2009-01-28 大连理工大学 芳香族硝基化合物还原制备芳胺的方法
KR101531731B1 (ko) * 2007-11-27 2015-06-25 미쓰이 가가쿠 가부시키가이샤 톨릴렌다이아민의 탈수 방법 및 탈수 장치
DE102008063991A1 (de) 2008-12-19 2010-06-24 Bayer Materialscience Ag Verfahren zur Herstellung von Isocyanaten in der Gasphase
EP2844635B1 (de) 2012-05-04 2017-03-15 Covestro Deutschland AG Verfahren zur behandlung eines ein aromatisches amin umfassenden stoffgemisches, insbesondere von roh-anilin
WO2018069209A1 (en) * 2016-10-10 2018-04-19 Basf Se Process for hydrogenating toluenediamine (tda) tar
CN106748811B (zh) * 2017-01-06 2018-09-14 浙江建业化工股份有限公司 三正丁胺回收法及所用回收装置
US11078151B2 (en) * 2017-01-27 2021-08-03 Covestro Llc Process for the preparation of stable toluene diamine residue/water blends, related compositions, and methods of using such blends as a fuel
CN114516802B (zh) * 2020-11-19 2023-12-19 万华化学集团股份有限公司 一种甲苯二胺精制的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE631964A (es) *
GB768111A (en) * 1953-11-13 1957-02-13 Bayer Ag Production of toluylene diamine
BE661047A (es) * 1964-03-12 1965-09-13
BE661946A (es) * 1964-04-01 1965-10-01
FR1482056A (fr) * 1966-03-10 1967-05-26 Melle Usines Sa Procédé d'hydrogénation
US3428531A (en) * 1967-06-01 1969-02-18 Du Pont Distillation recovery of metaphenylenediamine
DE4230098C1 (es) * 1992-09-09 1993-06-03 Bayer Ag, 5090 Leverkusen, De

Also Published As

Publication number Publication date
DE19608443C1 (de) 1997-07-24
EP0794170A1 (de) 1997-09-10
TW353061B (en) 1999-02-21
US5728880A (en) 1998-03-17
DE59705126D1 (de) 2001-12-06
EP0794170B1 (de) 2001-10-31
JPH09241223A (ja) 1997-09-16
CA2198815A1 (en) 1997-09-05

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