MX9704864A - Proceso para la purificacion continua de caprolactama impura preparada a partir de 6-amicapronitrilo. - Google Patents
Proceso para la purificacion continua de caprolactama impura preparada a partir de 6-amicapronitrilo.Info
- Publication number
- MX9704864A MX9704864A MX9704864A MX9704864A MX9704864A MX 9704864 A MX9704864 A MX 9704864A MX 9704864 A MX9704864 A MX 9704864A MX 9704864 A MX9704864 A MX 9704864A MX 9704864 A MX9704864 A MX 9704864A
- Authority
- MX
- Mexico
- Prior art keywords
- mixture
- raw caprolactam
- caprolactam
- give
- range
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/16—Separation or purification
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Polyamides (AREA)
Abstract
La presente invencion se refiere a capronitrilo impuro el cual se purifica por hidrogenacion, un tratamiento posterior en un medio ácido y la destilacion subsecuente en un medio alcalino, mediante un proceso en el cual (a) El 6-amicapronitrilo se convierte en caprolactáma impura mediante la reaccion con agua, (b) los compuestos con punto de ebullicion elevados y los compuestos con puntos de ebullicion elevados y los compuestos con puntos de ebullicion bajos se separan de la caprolactáma impura del paso (b) se trata con hidrogeno a una temperatura de 50 a 150 degree C y de 1.5 a 250 bar en presencia de un catalizador de hidrogenacion y, si se desea, de un solvente para dar una mezcla A. (d) la mezcla A en un solvente se pasa, de 30 a 80 degree C y de 1 a 5 bar, por un intercambiador bionico que contiene gruposácidos terminales para dar una mezcla B1, o (d2) una mezcla a se destila en presencia de ácido sulfurico, cualquier solvente presente se elimina antes de la adicion del ácido sulfurico, para dar una mezcla B2 y (e) la mezcla B1 o la mezcla B2 se destilan en presencia de una base para dar caprolactáma pura.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US19500041.2 | 1995-01-03 | ||
DE19500041A DE19500041A1 (de) | 1995-01-03 | 1995-01-03 | Verfahren zur kontinuierlichen Reinigung von aus 6-Aminocapronitril hergestelltem Roh-Caprolactam |
PCT/EP1995/005103 WO1996020923A1 (de) | 1995-01-03 | 1995-12-22 | Verfahren zur kontinuierlichen reinigung von aus 6-aminocapronitril hergestelltem roh-caprolactam |
Publications (2)
Publication Number | Publication Date |
---|---|
MX9704864A true MX9704864A (es) | 1997-10-31 |
MXPA97004864A MXPA97004864A (es) | 1998-07-03 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
AU4389396A (en) | 1996-07-24 |
CN1068311C (zh) | 2001-07-11 |
CZ288217B6 (en) | 2001-05-16 |
ES2160729T3 (es) | 2001-11-16 |
BR9510187A (pt) | 1997-12-23 |
CA2209336A1 (en) | 1996-07-11 |
CA2209336C (en) | 2004-02-24 |
EP0801643B1 (de) | 2001-07-25 |
PL186443B1 (pl) | 2004-01-30 |
CN1171781A (zh) | 1998-01-28 |
US5496941A (en) | 1996-03-05 |
KR980700966A (ko) | 1998-04-30 |
WO1996020923A1 (de) | 1996-07-11 |
KR100388869B1 (ko) | 2003-10-04 |
BG101672A (en) | 1998-02-27 |
RU2159234C2 (ru) | 2000-11-20 |
JPH10511668A (ja) | 1998-11-10 |
MY113742A (en) | 2002-05-31 |
CZ197297A3 (cs) | 1998-03-18 |
TW283705B (es) | 1996-08-21 |
DE59509451D1 (de) | 2001-08-30 |
PL321162A1 (en) | 1997-11-24 |
SK84097A3 (en) | 1998-05-06 |
EP0801643A1 (de) | 1997-10-22 |
BG63387B1 (bg) | 2001-12-29 |
DE19500041A1 (de) | 1996-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Grant or registration | ||
MM | Annulment or lapse due to non-payment of fees |