GB1258810A - - Google Patents
Info
- Publication number
- GB1258810A GB1258810A GB1258810DA GB1258810A GB 1258810 A GB1258810 A GB 1258810A GB 1258810D A GB1258810D A GB 1258810DA GB 1258810 A GB1258810 A GB 1258810A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lactams
- subjecting
- march
- thermal decomposition
- metal
- 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
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 2
- VEZUQRBDRNJBJY-UHFFFAOYSA-N cyclohexanone oxime Chemical compound ON=C1CCCCC1 VEZUQRBDRNJBJY-UHFFFAOYSA-N 0.000 abstract 2
- 150000003951 lactams Chemical class 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract 2
- 150000004706 metal oxides Chemical class 0.000 abstract 2
- 238000006386 neutralization reaction Methods 0.000 abstract 2
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 2
- 238000005979 thermal decomposition reaction Methods 0.000 abstract 2
- 238000006237 Beckmann rearrangement reaction Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 150000008282 halocarbons Chemical class 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 150000002923 oximes Chemical class 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011701 zinc 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Hydrogenated Pyridines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063968 | 1968-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1258810A true GB1258810A (enExample) | 1971-12-30 |
Family
ID=12032783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1258810D Expired GB1258810A (enExample) | 1968-03-30 | 1969-03-26 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH520678A (enExample) |
| FR (1) | FR2005195A1 (enExample) |
| GB (1) | GB1258810A (enExample) |
| NL (1) | NL6904946A (enExample) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019117817A1 (en) * | 2017-12-15 | 2019-06-20 | Aquafilslo D.O.O. | Process for the purification of caprolactam from a solution of crude caprolactam without organic solvent extraction |
| CN111912801A (zh) * | 2020-08-21 | 2020-11-10 | 平顶山神马工程塑料有限责任公司 | 一种聚酰胺切片中铜离子含量的测定方法 |
| CN120132749A (zh) * | 2025-05-16 | 2025-06-13 | 衢州巨化锦纶有限责任公司 | 一种己内酰胺和硫酸羟胺的联合生产系统 |
-
1969
- 1969-03-26 GB GB1258810D patent/GB1258810A/en not_active Expired
- 1969-03-28 CH CH476969A patent/CH520678A/de not_active IP Right Cessation
- 1969-03-31 FR FR6909722A patent/FR2005195A1/fr not_active Withdrawn
- 1969-03-31 NL NL6904946A patent/NL6904946A/xx unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019117817A1 (en) * | 2017-12-15 | 2019-06-20 | Aquafilslo D.O.O. | Process for the purification of caprolactam from a solution of crude caprolactam without organic solvent extraction |
| CN110494420A (zh) * | 2017-12-15 | 2019-11-22 | 阿卡费尔斯洛有限公司 | 不使用有机溶剂萃取而从粗己内酰胺的溶液中纯化己内酰胺的方法 |
| JP2020514350A (ja) * | 2017-12-15 | 2020-05-21 | アクアフィルスロ デー．オー．オー．Ａｑｕａｆｉｌｓｌｏ Ｄ．Ｏ．Ｏ． | 有機溶媒抽出を伴わない粗カプロラクタムの溶液からのカプロラクタムの精製方法 |
| US10787417B2 (en) | 2017-12-15 | 2020-09-29 | Aquafilslo D.O.O. | Process for the purification of caprolactam from a solution of crude caprolactam without organic solvent extraction |
| EA038223B1 (ru) * | 2017-12-15 | 2021-07-27 | Аквафилсло Д.О.О. | Способ очистки капролактама из раствора неочищенного капролактама без экстракции органическими растворителями |
| CN110494420B (zh) * | 2017-12-15 | 2023-05-12 | 阿卡费尔斯洛有限公司 | 不使用有机溶剂萃取而从粗己内酰胺的溶液中纯化己内酰胺的方法 |
| CN111912801A (zh) * | 2020-08-21 | 2020-11-10 | 平顶山神马工程塑料有限责任公司 | 一种聚酰胺切片中铜离子含量的测定方法 |
| CN111912801B (zh) * | 2020-08-21 | 2023-02-24 | 平顶山神马工程塑料有限责任公司 | 一种聚酰胺切片中铜离子含量的测定方法 |
| CN120132749A (zh) * | 2025-05-16 | 2025-06-13 | 衢州巨化锦纶有限责任公司 | 一种己内酰胺和硫酸羟胺的联合生产系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2005195A1 (enExample) | 1969-12-05 |
| CH520678A (de) | 1972-03-31 |
| DE1916149B2 (de) | 1977-05-12 |
| NL6904946A (enExample) | 1969-10-02 |
| DE1916149A1 (de) | 1969-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |