GB1286427A - Process of purifying lactams - Google Patents
Process of purifying lactamsInfo
- Publication number
- GB1286427A GB1286427A GB2401871A GB2401871A GB1286427A GB 1286427 A GB1286427 A GB 1286427A GB 2401871 A GB2401871 A GB 2401871A GB 2401871 A GB2401871 A GB 2401871A GB 1286427 A GB1286427 A GB 1286427A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxime
- sulphur dioxide
- lactam
- distillation
- purifying lactams
- 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
- 150000003951 lactams Chemical class 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 6
- 150000002923 oximes Chemical class 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 3
- 239000004291 sulphur dioxide Substances 0.000 abstract 3
- 238000004821 distillation Methods 0.000 abstract 2
- KNIUHBNRWZGIQQ-UHFFFAOYSA-N 7-diethoxyphosphinothioyloxy-4-methylchromen-2-one Chemical compound CC1=CC(=O)OC2=CC(OP(=S)(OCC)OCC)=CC=C21 KNIUHBNRWZGIQQ-UHFFFAOYSA-N 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000007792 gaseous phase Substances 0.000 abstract 1
- 230000008707 rearrangement Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
-
- 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)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702014761 DE2014761C3 (de) | 1970-03-26 | 1970-03-26 | Verfahren zur Entfernung von Oximen aus Lactamen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1286427A true GB1286427A (en) | 1972-08-23 |
Family
ID=5766479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2401871A Expired GB1286427A (en) | 1970-03-26 | 1971-04-19 | Process of purifying lactams |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE764894A (enExample) |
| CH (1) | CH549021A (enExample) |
| DE (1) | DE2014761C3 (enExample) |
| FR (1) | FR2087869A5 (enExample) |
| GB (1) | GB1286427A (enExample) |
| NL (1) | NL172150C (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0464943A1 (en) * | 1990-07-06 | 1992-01-08 | Dsm N.V. | Process for treating amides |
| NL1003564C2 (nl) * | 1996-07-11 | 1998-01-15 | Dsm Nv | Werkwijze voor het scheiden van een ketoxim of aldoxim van een amide. |
-
1970
- 1970-03-26 DE DE19702014761 patent/DE2014761C3/de not_active Expired
-
1971
- 1971-03-24 CH CH426771A patent/CH549021A/xx not_active IP Right Cessation
- 1971-03-25 FR FR7110730A patent/FR2087869A5/fr not_active Expired
- 1971-03-25 NL NL7104047A patent/NL172150C/xx not_active IP Right Cessation
- 1971-03-26 BE BE764894A patent/BE764894A/xx not_active IP Right Cessation
- 1971-04-19 GB GB2401871A patent/GB1286427A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0464943A1 (en) * | 1990-07-06 | 1992-01-08 | Dsm N.V. | Process for treating amides |
| US5227028A (en) * | 1990-07-06 | 1993-07-13 | Dsm N.V. | Process for treating amides |
| NL1003564C2 (nl) * | 1996-07-11 | 1998-01-15 | Dsm Nv | Werkwijze voor het scheiden van een ketoxim of aldoxim van een amide. |
| WO1998002416A1 (en) * | 1996-07-11 | 1998-01-22 | Dsm N.V. | Process for the separation of a ketoxime or aldoxime from an amide |
| US6706153B2 (en) | 1996-07-11 | 2004-03-16 | Dsm N.V. | Process for the separation of a ketoxime or aldoxime from an amide |
Also Published As
| Publication number | Publication date |
|---|---|
| NL172150C (nl) | 1983-07-18 |
| BE764894A (fr) | 1971-08-16 |
| DE2014761B2 (de) | 1981-01-15 |
| CH549021A (de) | 1974-05-15 |
| DE2014761A1 (de) | 1971-10-21 |
| NL7104047A (enExample) | 1971-09-28 |
| DE2014761C3 (de) | 1982-01-21 |
| FR2087869A5 (enExample) | 1971-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |