GB1251258A - - Google Patents
Info
- Publication number
- GB1251258A GB1251258A GB1251258DA GB1251258A GB 1251258 A GB1251258 A GB 1251258A GB 1251258D A GB1251258D A GB 1251258DA GB 1251258 A GB1251258 A GB 1251258A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caprolactam
- solvent
- water
- march
- solvents
- 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
Links
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 abstract 10
- 239000002904 solvent Substances 0.000 abstract 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 abstract 2
- 229960001701 chloroform Drugs 0.000 abstract 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 abstract 1
- 229920002292 Nylon 6 Polymers 0.000 abstract 1
- 239000008346 aqueous phase Substances 0.000 abstract 1
- 229940043232 butyl acetate Drugs 0.000 abstract 1
- 229940093499 ethyl acetate Drugs 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 229940090181 propyl acetate Drugs 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000003643 water by type Substances 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Pyrrole Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681770088 DE1770088C3 (de) | 1968-03-29 | Verfahren zur Gewinnung von Caprolactam aus den durch Behandeln von Polycaprolactam mit Wasser erhaltenen Waschwässern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1251258A true GB1251258A (enrdf_load_stackoverflow) | 1971-10-27 |
Family
ID=5700393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1251258D Expired GB1251258A (enrdf_load_stackoverflow) | 1968-03-29 | 1969-03-28 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE730682A (enrdf_load_stackoverflow) |
| CH (1) | CH510666A (enrdf_load_stackoverflow) |
| ES (1) | ES365414A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2005035A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1251258A (enrdf_load_stackoverflow) |
| NL (1) | NL6904888A (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0002300A1 (en) * | 1977-12-02 | 1979-06-13 | Stamicarbon B.V. | Process for the recovery of 2-pyrrolidone |
| US4350630A (en) | 1980-07-12 | 1982-09-21 | Basf Aktiengesellschaft | Continuous extraction of caprolactam from an aqueous solution containing caprolactam and its oligomers |
| WO1998041502A1 (en) * | 1997-03-17 | 1998-09-24 | Dsm N.V. | Process for purifying caprolactam |
| US6191274B1 (en) | 1996-02-17 | 2001-02-20 | Dsm N.V. | Recovery of ε-caprolactam |
-
1969
- 1969-03-26 FR FR6908931A patent/FR2005035A1/fr not_active Withdrawn
- 1969-03-27 CH CH486369A patent/CH510666A/de not_active IP Right Cessation
- 1969-03-28 BE BE730682D patent/BE730682A/xx unknown
- 1969-03-28 NL NL6904888A patent/NL6904888A/xx unknown
- 1969-03-28 GB GB1251258D patent/GB1251258A/en not_active Expired
- 1969-03-29 ES ES0365414A patent/ES365414A1/es not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0002300A1 (en) * | 1977-12-02 | 1979-06-13 | Stamicarbon B.V. | Process for the recovery of 2-pyrrolidone |
| US4350630A (en) | 1980-07-12 | 1982-09-21 | Basf Aktiengesellschaft | Continuous extraction of caprolactam from an aqueous solution containing caprolactam and its oligomers |
| US6191274B1 (en) | 1996-02-17 | 2001-02-20 | Dsm N.V. | Recovery of ε-caprolactam |
| WO1998041502A1 (en) * | 1997-03-17 | 1998-09-24 | Dsm N.V. | Process for purifying caprolactam |
| US6448395B1 (en) | 1997-03-17 | 2002-09-10 | Dsm N.V. | Process for purifying caprolactam |
Also Published As
| Publication number | Publication date |
|---|---|
| CH510666A (de) | 1971-07-31 |
| DE1770088A1 (de) | 1971-09-16 |
| DE1770088B2 (de) | 1976-05-26 |
| FR2005035A1 (enrdf_load_stackoverflow) | 1969-12-05 |
| BE730682A (enrdf_load_stackoverflow) | 1969-09-29 |
| ES365414A1 (es) | 1971-01-16 |
| NL6904888A (enrdf_load_stackoverflow) | 1969-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |