FR2353535B1 - - Google Patents
Info
- Publication number
- FR2353535B1 FR2353535B1 FR7717079A FR7717079A FR2353535B1 FR 2353535 B1 FR2353535 B1 FR 2353535B1 FR 7717079 A FR7717079 A FR 7717079A FR 7717079 A FR7717079 A FR 7717079A FR 2353535 B1 FR2353535 B1 FR 2353535B1
- Authority
- FR
- France
- 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
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)
- Other In-Based Heterocyclic Compounds (AREA)
- Pyrrole Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyamides (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762625402 DE2625402A1 (en) | 1976-06-05 | 1976-06-05 | CLEANING EPSILON CAPROLACTAM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2353535A1 FR2353535A1 (en) | 1977-12-30 |
| FR2353535B1 true FR2353535B1 (en) | 1982-07-02 |
Family
ID=5979933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7717079A Granted FR2353535A1 (en) | 1976-06-05 | 1977-06-03 | PURIFICATION OF E-CAPROLACTAM |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS52151186A (en) |
| BE (1) | BE855367A (en) |
| BR (1) | BR7703572A (en) |
| CH (1) | CH626339A5 (en) |
| DD (1) | DD132491A5 (en) |
| DE (1) | DE2625402A1 (en) |
| ES (1) | ES459328A1 (en) |
| FR (1) | FR2353535A1 (en) |
| GB (1) | GB1535485A (en) |
| NL (1) | NL7706080A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2845075A1 (en) * | 1978-10-17 | 1980-05-08 | Basf Ag | METHOD FOR PURIFYING ROHCAPROLACTAM |
| CN115253380B (en) * | 2022-08-19 | 2023-09-01 | 清元智能科技研究院(湖北)有限公司 | Caprolactam extraction system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH522649A (en) * | 1970-04-17 | 1973-04-13 | Buchs Metallwerk Ag | Caprolactam purification - by solvent extn and crystallisation using same solvent |
| SU387996A1 (en) * | 1971-04-30 | 1973-06-22 | METHOD OF CLEANING CAPROLACTAM | |
| CH564528A5 (en) * | 1972-06-14 | 1975-07-31 | Buchs Metallwerk Ag | Purification of caprolactam freed from water - by counter-current multi-stage cystallisation from the melt using a solvent |
-
1976
- 1976-06-05 DE DE19762625402 patent/DE2625402A1/en not_active Withdrawn
-
1977
- 1977-05-30 GB GB2272777A patent/GB1535485A/en not_active Expired
- 1977-05-31 ES ES459328A patent/ES459328A1/en not_active Expired
- 1977-06-02 BR BR7703572A patent/BR7703572A/en unknown
- 1977-06-02 NL NL7706080A patent/NL7706080A/en not_active Application Discontinuation
- 1977-06-03 FR FR7717079A patent/FR2353535A1/en active Granted
- 1977-06-03 JP JP6492777A patent/JPS52151186A/en active Pending
- 1977-06-03 CH CH689777A patent/CH626339A5/en not_active IP Right Cessation
- 1977-06-03 DD DD19929277A patent/DD132491A5/en unknown
- 1977-06-03 BE BE178173A patent/BE855367A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52151186A (en) | 1977-12-15 |
| GB1535485A (en) | 1978-12-13 |
| ES459328A1 (en) | 1978-03-16 |
| BE855367A (en) | 1977-12-05 |
| DE2625402A1 (en) | 1977-12-22 |
| BR7703572A (en) | 1978-03-21 |
| CH626339A5 (en) | 1981-11-13 |
| DD132491A5 (en) | 1978-10-04 |
| FR2353535A1 (en) | 1977-12-30 |
| NL7706080A (en) | 1977-12-07 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |