DD104522A5 - - Google Patents
Info
- Publication number
- DD104522A5 DD104522A5 DD168476A DD16847673A DD104522A5 DD 104522 A5 DD104522 A5 DD 104522A5 DD 168476 A DD168476 A DD 168476A DD 16847673 A DD16847673 A DD 16847673A DD 104522 A5 DD104522 A5 DD 104522A5
- Authority
- DD
- German Democratic Republic
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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Pyrrole Compounds (AREA)
- Extraction Or Liquid Replacement (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2203945A DE2203945B2 (de) | 1972-01-28 | 1972-01-28 | Verfahren zur Reinigung von e -Caprolactam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD104522A5 true DD104522A5 (cs) | 1974-03-12 |
Family
ID=5834269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD168476A DD104522A5 (cs) | 1972-01-28 | 1973-01-26 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3899485A (cs) |
| JP (1) | JPS5752328B2 (cs) |
| BE (1) | BE794622A (cs) |
| CA (1) | CA1038384A (cs) |
| CH (1) | CH576441A5 (cs) |
| DD (1) | DD104522A5 (cs) |
| DE (1) | DE2203945B2 (cs) |
| FR (1) | FR2169364B1 (cs) |
| GB (1) | GB1390294A (cs) |
| IT (1) | IT977064B (cs) |
| NL (1) | NL7301105A (cs) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW215084B (en) * | 1992-04-17 | 1993-10-21 | Sumitomo Chemical Co | Process for producing a high purity caprolactam |
| US6045703A (en) * | 1998-06-15 | 2000-04-04 | Union Carbide Chemicals & Plastics Technology Corporation | Separation processes |
| US6036865A (en) * | 1998-06-15 | 2000-03-14 | Union Carbide Chemicals & Plastics Technology Corporation | Separation processes |
| JP4182273B2 (ja) | 2000-06-27 | 2008-11-19 | 住友化学株式会社 | ε−カプロラクタムの製造方法 |
| US7022844B2 (en) | 2002-09-21 | 2006-04-04 | Honeywell International Inc. | Amide-based compounds, production, recovery, purification and uses thereof |
| US20070155987A1 (en) * | 2006-01-04 | 2007-07-05 | O'meadhra Ruairi S | Oxidative digestion with optimized agitation |
| US20070208194A1 (en) * | 2006-03-01 | 2007-09-06 | Woodruff Thomas E | Oxidation system with sidedraw secondary reactor |
| US7816556B2 (en) * | 2006-03-01 | 2010-10-19 | Eastman Chemical Company | Polycarboxylic acid production system employing enhanced multistage oxidative digestion |
| US7772424B2 (en) * | 2006-03-01 | 2010-08-10 | Eastman Chemical Company | Polycarboxylic acid production system employing enhanced evaporative concentration downstream of oxidative digestion |
| US7501537B2 (en) * | 2006-03-01 | 2009-03-10 | Eastman Chemical Company | Polycarboxylic acid production system employing oxidative digestion with reduced or eliminated upstream liquor exchange |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2758991A (en) * | 1956-08-14 | Hvvevvtofry | ||
| US2313026A (en) * | 1939-02-13 | 1943-03-02 | Schlack Paul | Process for the manufacture of lactams from oximes of cyclic ketones |
| CH547805A (de) * | 1970-10-01 | 1974-04-11 | Inventa Ag | Verfahren zur reinigung von lactamen. |
| CH547286A (de) * | 1971-01-06 | 1974-03-29 | Inventa Ag | Verfahren zur reinigung von lactamen. |
-
0
- BE BE794622D patent/BE794622A/xx not_active IP Right Cessation
-
1972
- 1972-01-28 DE DE2203945A patent/DE2203945B2/de active Granted
-
1973
- 1973-01-23 US US326125A patent/US3899485A/en not_active Expired - Lifetime
- 1973-01-25 NL NL7301105A patent/NL7301105A/xx not_active Application Discontinuation
- 1973-01-25 GB GB381573A patent/GB1390294A/en not_active Expired
- 1973-01-26 CA CA162,179A patent/CA1038384A/en not_active Expired
- 1973-01-26 DD DD168476A patent/DD104522A5/xx unknown
- 1973-01-26 JP JP48010376A patent/JPS5752328B2/ja not_active Expired
- 1973-01-26 IT IT47907/73A patent/IT977064B/it active
- 1973-01-26 CH CH116273A patent/CH576441A5/xx not_active IP Right Cessation
- 1973-01-26 FR FR7302913A patent/FR2169364B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3899485A (en) | 1975-08-12 |
| GB1390294A (en) | 1975-04-09 |
| NL7301105A (cs) | 1973-07-31 |
| DE2203945C3 (cs) | 1980-11-20 |
| DE2203945B2 (de) | 1980-03-27 |
| IT977064B (it) | 1974-09-10 |
| JPS4885586A (cs) | 1973-11-13 |
| FR2169364B1 (cs) | 1978-03-03 |
| BE794622A (fr) | 1973-07-26 |
| DE2203945A1 (de) | 1973-08-02 |
| CA1038384A (en) | 1978-09-12 |
| JPS5752328B2 (cs) | 1982-11-06 |
| FR2169364A1 (cs) | 1973-09-07 |
| CH576441A5 (cs) | 1976-06-15 |