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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/86—Separation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/84—Purification
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.
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)
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)
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 |
-
1996
- 1996-03-05 DE DE19608443A patent/DE19608443C1/de not_active Expired - Fee Related
-
1997
- 1997-02-20 EP EP97102725A patent/EP0794170B1/de not_active Expired - Lifetime
- 1997-02-20 ES ES97102725T patent/ES2166920T3/es not_active Expired - Lifetime
- 1997-02-20 DE DE59705126T patent/DE59705126D1/de not_active Expired - Lifetime
- 1997-02-25 US US08/806,139 patent/US5728880A/en not_active Expired - Lifetime
- 1997-02-28 CA CA002198815A patent/CA2198815A1/en not_active Abandoned
- 1997-03-03 TW TW086102466A patent/TW353061B/zh active
- 1997-03-03 JP JP9061721A patent/JPH09241223A/ja not_active Abandoned
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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