FR2155362A5 - - Google Patents
Info
- Publication number
- FR2155362A5 FR2155362A5 FR7234067A FR7234067A FR2155362A5 FR 2155362 A5 FR2155362 A5 FR 2155362A5 FR 7234067 A FR7234067 A FR 7234067A FR 7234067 A FR7234067 A FR 7234067A FR 2155362 A5 FR2155362 A5 FR 2155362A5
- Authority
- FR
- France
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/18—Separation; Purification; Stabilisation; Use of additives
- C07C263/20—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4488071 | 1971-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2155362A5 true FR2155362A5 (de) | 1973-05-18 |
Family
ID=10435100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7234067A Expired FR2155362A5 (de) | 1971-09-27 | 1972-09-26 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS4840719A (de) |
| DE (1) | DE2246920A1 (de) |
| FR (1) | FR2155362A5 (de) |
| GB (1) | GB1353787A (de) |
| NL (1) | NL7213043A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0548685A2 (de) * | 1991-12-23 | 1993-06-30 | Bayer Ag | Verfahren zur Herstellung von Isocyanaten und Aufarbeitung des Rückstandes |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054349A (ja) * | 1983-09-05 | 1985-03-28 | Mitsui Toatsu Chem Inc | 有機イソシアナ−トの精製方法 |
| JP4995383B2 (ja) * | 2001-08-03 | 2012-08-08 | 日本曹達株式会社 | 高融点、高沸点ポリイソシアナト類の精製方法 |
| EP3736263A1 (de) * | 2019-05-07 | 2020-11-11 | Covestro Deutschland AG | Verfahren zur reinigung von isocyanaten |
| US20230050973A1 (en) * | 2020-01-22 | 2023-02-16 | Covestro Deutschland Ag | Method for recovering diisocyanates from distillation residues |
-
1971
- 1971-09-27 GB GB1353787D patent/GB1353787A/en not_active Expired
-
1972
- 1972-09-25 DE DE19722246920 patent/DE2246920A1/de active Pending
- 1972-09-26 FR FR7234067A patent/FR2155362A5/fr not_active Expired
- 1972-09-27 NL NL7213043A patent/NL7213043A/xx unknown
- 1972-09-27 JP JP9695672A patent/JPS4840719A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0548685A2 (de) * | 1991-12-23 | 1993-06-30 | Bayer Ag | Verfahren zur Herstellung von Isocyanaten und Aufarbeitung des Rückstandes |
| EP0548685A3 (en) * | 1991-12-23 | 1993-08-11 | Bayer Ag | Method for preparing isocyanates and treatment of residue |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7213043A (de) | 1973-03-29 |
| GB1353787A (en) | 1974-05-22 |
| DE2246920A1 (de) | 1973-04-05 |
| JPS4840719A (de) | 1973-06-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |