ES282923A1 - A procedure for the depuration of caprolactama (Machine-translation by Google Translate, not legally binding) - Google Patents
A procedure for the depuration of caprolactama (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES282923A1 ES282923A1 ES282923A ES282923A ES282923A1 ES 282923 A1 ES282923 A1 ES 282923A1 ES 282923 A ES282923 A ES 282923A ES 282923 A ES282923 A ES 282923A ES 282923 A1 ES282923 A1 ES 282923A1
- Authority
- ES
- Spain
- Prior art keywords
- translation
- machine
- legally binding
- *** translate
- caprolactama
- 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
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
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/08—Preparation of lactams from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D223/00—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
- C07D223/02—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings
- C07D223/06—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D223/08—Oxygen atoms
- C07D223/10—Oxygen atoms attached in position 2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyamides (AREA)
Abstract
A process for the clearance of epsilon-caprolactam, characterized in that the crude lactam containing water is acidified and, at a ph range of 3.2 to 4.2, is released from the water by distillation and then, in a known manner, it is still debugged by rectification and/or extraction. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1394861A CH393332A (en) | 1961-11-30 | 1961-11-30 | Process for purifying e-caprolactam |
Publications (1)
Publication Number | Publication Date |
---|---|
ES282923A1 true ES282923A1 (en) | 1963-05-01 |
Family
ID=4396688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES282923A Expired ES282923A1 (en) | 1961-11-30 | 1962-11-29 | A procedure for the depuration of caprolactama (Machine-translation by Google Translate, not legally binding) |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH393332A (en) |
DK (1) | DK103021C (en) |
ES (1) | ES282923A1 (en) |
GB (1) | GB990124A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2781796B1 (en) * | 1998-07-28 | 2000-09-22 | Rhone Poulenc Fibres | LACTAM DEHYDRATION PROCESS |
-
1961
- 1961-11-30 CH CH1394861A patent/CH393332A/en unknown
-
1962
- 1962-10-08 GB GB38055/62A patent/GB990124A/en not_active Expired
- 1962-11-01 DK DK471262AA patent/DK103021C/en active
- 1962-11-29 ES ES282923A patent/ES282923A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH393332A (en) | 1965-06-15 |
GB990124A (en) | 1965-04-28 |
DK103021C (en) | 1965-11-08 |
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