NL7112567A - - Google Patents
Info
- Publication number
- NL7112567A NL7112567A NL7112567A NL7112567A NL7112567A NL 7112567 A NL7112567 A NL 7112567A NL 7112567 A NL7112567 A NL 7112567A NL 7112567 A NL7112567 A NL 7112567A NL 7112567 A NL7112567 A NL 7112567A
- Authority
- NL
- Netherlands
Links
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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1042—Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7566770A | 1970-09-25 | 1970-09-25 | |
| US12495871A | 1971-03-16 | 1971-03-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL7112567A true NL7112567A (nl) | 1972-03-28 |
| NL156161B NL156161B (nl) | 1978-03-15 |
Family
ID=26757140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7112567A NL156161B (nl) | 1970-09-25 | 1971-09-13 | Werkwijze voor het bereiden van copolyimiden. |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5239880B1 (nl) |
| GB (1) | GB1354927A (nl) |
| NL (1) | NL156161B (nl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021194641A (ja) | 2020-06-17 | 2021-12-27 | エボニック ファイバース ゲゼルシャフト ミット ベシュレンクテル ハフツングEvonik Fibres GmbH | 架橋中空糸膜およびその新たな製造方法 |
-
1971
- 1971-09-13 NL NL7112567A patent/NL156161B/nl not_active IP Right Cessation
- 1971-09-20 JP JP7332571A patent/JPS5239880B1/ja active Pending
- 1971-09-23 GB GB1354927D patent/GB1354927A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5239880B1 (nl) | 1977-10-07 |
| DE2143080A1 (de) | 1972-03-30 |
| NL156161B (nl) | 1978-03-15 |
| DE2143080B2 (de) | 1976-09-09 |
| GB1354927A (en) | 1974-06-05 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SNR | Assignments of patents or rights arising from examined patent applications |
Owner name: THE DOW CHEMICAL COMPANY |
|
| NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: UPJOHN |
|
| V4 | Lapsed because of reaching the maxim lifetime of a patent |