FR2159180B1 - - Google Patents
Info
- Publication number
- FR2159180B1 FR2159180B1 FR7140161A FR7140161A FR2159180B1 FR 2159180 B1 FR2159180 B1 FR 2159180B1 FR 7140161 A FR7140161 A FR 7140161A FR 7140161 A FR7140161 A FR 7140161A FR 2159180 B1 FR2159180 B1 FR 2159180B1
- 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)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702023344 DE2023344A1 (de) | 1970-05-13 | 1970-05-13 | Verfahren zur Reinigung von Caprolactam |
CA127,089A CA964656A (en) | 1970-05-13 | 1971-11-08 | Process for the purification of caprolactam |
FR7140161A FR2159180A1 (en) | 1970-05-13 | 1971-11-09 | Epsilon caprolactam purificn - by crystallisation from aromatic solvent and distillation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702023344 DE2023344A1 (de) | 1970-05-13 | 1970-05-13 | Verfahren zur Reinigung von Caprolactam |
FR7140161A FR2159180A1 (en) | 1970-05-13 | 1971-11-09 | Epsilon caprolactam purificn - by crystallisation from aromatic solvent and distillation |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2159180A1 FR2159180A1 (en) | 1973-06-22 |
FR2159180B1 true FR2159180B1 (de) | 1976-03-26 |
Family
ID=25759133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7140161A Granted FR2159180A1 (en) | 1970-05-13 | 1971-11-09 | Epsilon caprolactam purificn - by crystallisation from aromatic solvent and distillation |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA964656A (de) |
DE (1) | DE2023344A1 (de) |
FR (1) | FR2159180A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7505130A (nl) * | 1975-05-01 | 1976-11-03 | Stamicarbon | Werkwijze voor de winning van zuiver epsilon- -caprolactam uit een waterige oplossing hiervan. |
TW215084B (en) * | 1992-04-17 | 1993-10-21 | Sumitomo Chemical Co | Process for producing a high purity caprolactam |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1490312A (fr) * | 1965-09-11 | 1967-07-28 | Zimmer Ag Hans J | Procédé perfectionné de purification de l'epsilon-caprolactame |
-
1970
- 1970-05-13 DE DE19702023344 patent/DE2023344A1/de not_active Withdrawn
-
1971
- 1971-11-08 CA CA127,089A patent/CA964656A/en not_active Expired
- 1971-11-09 FR FR7140161A patent/FR2159180A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2159180A1 (en) | 1973-06-22 |
DE2023344A1 (de) | 1971-11-25 |
CA964656A (en) | 1975-03-18 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |