GB1399000A - Process for the recovery of pure epsilon-caprolactam - Google Patents
Process for the recovery of pure epsilon-caprolactamInfo
- Publication number
- GB1399000A GB1399000A GB4973372A GB4973372A GB1399000A GB 1399000 A GB1399000 A GB 1399000A GB 4973372 A GB4973372 A GB 4973372A GB 4973372 A GB4973372 A GB 4973372A GB 1399000 A GB1399000 A GB 1399000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- lactam
- emulsion
- solution
- caprolactam
- 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 title 2
- 238000000034 method Methods 0.000 title 1
- 238000011084 recovery Methods 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 5
- 150000003951 lactams Chemical class 0.000 abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 239000000839 emulsion Substances 0.000 abstract 4
- 239000000047 product Substances 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- 238000006237 Beckmann rearrangement reaction Methods 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- VEZUQRBDRNJBJY-UHFFFAOYSA-N cyclohexanone oxime Chemical compound ON=C1CCCCC1 VEZUQRBDRNJBJY-UHFFFAOYSA-N 0.000 abstract 2
- 239000003960 organic solvent Substances 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract 1
- 150000001450 anions Chemical class 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000006228 supernatant Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/04—Preparation of lactams from or via oximes by Beckmann rearrangement
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Polyamides (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7114904,A NL171893C (nl) | 1971-10-29 | 1971-10-29 | Werkwijze voor de winning van zuiver epsilon-aminocaprolactam. |
| NL7211586A NL7211586A (en) | 1972-08-25 | 1972-08-25 | High-purity epsilon-caprolactam prodn - by intramolecular rearrangement of cyclohexanone oxime with acid catalyst followed by |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1399000A true GB1399000A (en) | 1975-06-25 |
Family
ID=26644695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4973372A Expired GB1399000A (en) | 1971-10-29 | 1972-10-27 | Process for the recovery of pure epsilon-caprolactam |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3850910A (enExample) |
| JP (1) | JPS5335079B2 (enExample) |
| AR (1) | AR193140A1 (enExample) |
| BE (1) | BE790692A (enExample) |
| CH (1) | CH574414A5 (enExample) |
| CS (1) | CS183671B2 (enExample) |
| DD (1) | DD101668A5 (enExample) |
| DE (1) | DE2252891A1 (enExample) |
| FR (1) | FR2158051B1 (enExample) |
| GB (1) | GB1399000A (enExample) |
| IT (1) | IT966829B (enExample) |
| PL (1) | PL82397B1 (enExample) |
| RO (1) | RO64765A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0152843A3 (en) * | 1984-02-08 | 1987-05-27 | SNIA BPD S.p.A. | A method of purifying caprolactam |
| EP0461835A3 (en) * | 1990-06-12 | 1992-09-23 | Ube Industries, Ltd. | Method for purifying organic solution containing lactams |
Families Citing this family (7)
| 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. |
| NL7601061A (nl) * | 1976-02-03 | 1977-08-05 | Stamicarbon | Werkwijze voor het winnen van epsilon-caprolac- tam uit een epsilon-caprolactamzwavelzuur-reac- tiemengsel. |
| NL7700882A (nl) * | 1977-01-28 | 1978-08-01 | Stamicarbon | Werkwijze voor het winnen van epsilon-caprolac- tam uit een epsilon-caprolactamzwavelzuurreac- tiemengsel. |
| JP2601945B2 (ja) * | 1990-11-21 | 1997-04-23 | 宇部興産株式会社 | ラクタム油の精製方法 |
| JP2601946B2 (ja) * | 1990-11-21 | 1997-04-23 | 宇部興産株式会社 | ラクタム含有溶液の精製方法 |
| BE1011047A3 (nl) * | 1997-03-17 | 1999-04-06 | Dsm Nv | Werkwijze voor het zuiveren van caprolactam. |
| US7022844B2 (en) * | 2002-09-21 | 2006-04-04 | Honeywell International Inc. | Amide-based compounds, production, recovery, purification and uses thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1261891A (fr) * | 1959-10-09 | 1961-05-26 | Stamicarbon | Procédé pour séparer un lactame d'un mélange réactionnel acide |
-
0
- BE BE790692D patent/BE790692A/xx not_active IP Right Cessation
-
1972
- 1972-10-26 CH CH1568672A patent/CH574414A5/xx not_active IP Right Cessation
- 1972-10-27 DD DD166519A patent/DD101668A5/xx unknown
- 1972-10-27 GB GB4973372A patent/GB1399000A/en not_active Expired
- 1972-10-27 CS CS7200007250A patent/CS183671B2/cs unknown
- 1972-10-27 IT IT53686/72A patent/IT966829B/it active
- 1972-10-27 DE DE2252891A patent/DE2252891A1/de not_active Ceased
- 1972-10-28 PL PL1972158529A patent/PL82397B1/pl unknown
- 1972-10-28 JP JP10840072A patent/JPS5335079B2/ja not_active Expired
- 1972-10-30 AR AR244880A patent/AR193140A1/es active
- 1972-10-30 FR FR7238403A patent/FR2158051B1/fr not_active Expired
- 1972-10-30 US US00301726A patent/US3850910A/en not_active Expired - Lifetime
- 1972-10-30 RO RO7272673A patent/RO64765A/ro unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0152843A3 (en) * | 1984-02-08 | 1987-05-27 | SNIA BPD S.p.A. | A method of purifying caprolactam |
| EP0461835A3 (en) * | 1990-06-12 | 1992-09-23 | Ube Industries, Ltd. | Method for purifying organic solution containing lactams |
Also Published As
| Publication number | Publication date |
|---|---|
| US3850910A (en) | 1974-11-26 |
| IT966829B (it) | 1974-02-20 |
| CH574414A5 (enExample) | 1976-04-15 |
| PL82397B1 (en) | 1975-10-31 |
| FR2158051A1 (enExample) | 1973-06-08 |
| FR2158051B1 (enExample) | 1976-05-21 |
| JPS5335079B2 (enExample) | 1978-09-25 |
| JPS4852785A (enExample) | 1973-07-24 |
| CS183671B2 (en) | 1978-07-31 |
| BE790692A (fr) | 1973-04-27 |
| DE2252891A1 (de) | 1973-05-03 |
| RO64765A (ro) | 1980-01-15 |
| AR193140A1 (es) | 1973-03-30 |
| DD101668A5 (enExample) | 1973-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1399000A (en) | Process for the recovery of pure epsilon-caprolactam | |
| GB1138750A (en) | Preparation of oximes | |
| GB996322A (en) | Simultaneous recovery of pure ammonium sulphate and pure lactams from rearrangement mixtures of alicyclic ketoximes | |
| US4036830A (en) | Process for the recovery of pure ε-caprolactam from an aqueous solution thereof | |
| ES427627A1 (es) | Un procedimiento para la recuperacion de eta-caprolactama ycristales de sulfato de amonio a partir de una mezcla de reaccion que contiene la lactama y acido sulfurico. | |
| IL39344A (en) | Isolation of lactams | |
| GB1508942A (en) | Process for producing lactams | |
| ES417501A2 (es) | Procedimiento para la recuperacion de lactamas de una mezclaobtenida por conversion de las oximas correspondientes. | |
| US2993889A (en) | Separation of a lactam from an acid | |
| US3364202A (en) | Process for the recovery of free sulfuric acid from ammonium bisulfate | |
| GB1397289A (en) | Process for the recovery of lactam | |
| GB1528513A (en) | Manufacture of cyclohexanone oxime | |
| GB1409522A (en) | Process for recovery of epsilon-caprolactam | |
| GB1500084A (en) | Process for preparing lactams | |
| GB1126495A (en) | Process for the continuous production of laurolactam in the liquid phase | |
| GB1462740A (en) | Process for the recovery of epsilon-caprolactam from reaction mixture of epsilon-caprolactam and sulphuric acid | |
| US2737511A (en) | Extraction of lactam | |
| US3820972A (en) | Separation of lactams from a medium coating concentrated sulphuric trioxide in combination with the preparation of phosphate fertilizers | |
| GB1506139A (en) | Process for the recovery of epsilon-caprolactam from a reaction mixture of epsilon-caprolactam and sulphuric acid | |
| GB667075A (en) | An improved process for the manufacture of lactams | |
| GB1158998A (en) | Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions Containing Organic Components. | |
| GB1001547A (en) | Process for the separation of ªÏ-dodecalactam | |
| GB1160580A (en) | Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions containing Organic Components | |
| GB1379283A (en) | Separation of lactam from a medium containing concentrated sulphuric acid or sulphuric acid and sulphur trioxide | |
| IE40576L (en) | Purified phosphoric acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |