GB1303788A - - Google Patents
Info
- Publication number
- GB1303788A GB1303788A GB1079171*[A GB1079171A GB1303788A GB 1303788 A GB1303788 A GB 1303788A GB 1079171 A GB1079171 A GB 1079171A GB 1303788 A GB1303788 A GB 1303788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formaldehyde
- reaction
- ammonium salt
- aqueous
- nitrilotriacetonitrile
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
1303788 Nitrilotriacetonitrile KNAPSACK AG 22 April 1971 [26 May 1970] 10791/1 Heading C2C Nitrilotriacetonitrile (NTN) is made by reacting a salt of ammonia with a non-oxidizing acid with formaldehyde and HCN in an aqueous acid phase, at 50-110‹ C., completing the reaction, and separating the reaction mixture into firstly crystalline NTN and secondly an aqueous acid phase as the mother liquor, which comprises subjecting a product obtained by primary reaction of an aqueous solution of the said ammonium salt with an aqueous formaldehyde solution, the said ammonium salt and the said formaldehyde being used in a molar ratio greater than 1: 6, to reaction with a stoichiometric proportion being based on the amount of formaldehyde which has reacted with the ammonium salt in the said primary reaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702025632 DE2025632C3 (en) | 1970-05-26 | Process for the continuous production of nitrilotriacetonitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1303788A true GB1303788A (en) | 1973-01-17 |
Family
ID=5772118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1079171*[A Expired GB1303788A (en) | 1970-05-26 | 1971-04-22 |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5023018B1 (en) |
| AT (1) | AT310139B (en) |
| BE (1) | BE767543A (en) |
| BR (1) | BR7103136D0 (en) |
| CH (1) | CH557802A (en) |
| ES (1) | ES390692A1 (en) |
| FR (1) | FR2093717A5 (en) |
| GB (1) | GB1303788A (en) |
| NL (1) | NL171051C (en) |
| NO (1) | NO136790C (en) |
| SE (1) | SE365796B (en) |
| ZA (1) | ZA712514B (en) |
-
1971
- 1971-04-02 SE SE04333/71A patent/SE365796B/xx unknown
- 1971-04-20 ZA ZA712514A patent/ZA712514B/en unknown
- 1971-04-22 GB GB1079171*[A patent/GB1303788A/en not_active Expired
- 1971-04-28 ES ES390692A patent/ES390692A1/en not_active Expired
- 1971-05-13 NO NO1822/71A patent/NO136790C/en unknown
- 1971-05-21 BR BR3136/71A patent/BR7103136D0/en unknown
- 1971-05-21 NL NLAANVRAGE7106999,A patent/NL171051C/en not_active IP Right Cessation
- 1971-05-24 AT AT445971A patent/AT310139B/en not_active IP Right Cessation
- 1971-05-24 BE BE767543A patent/BE767543A/en not_active IP Right Cessation
- 1971-05-25 FR FR7118902A patent/FR2093717A5/fr not_active Expired
- 1971-05-26 CH CH771771A patent/CH557802A/en not_active IP Right Cessation
- 1971-05-26 JP JP46036182A patent/JPS5023018B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE767543A (en) | 1971-11-24 |
| ZA712514B (en) | 1972-01-26 |
| FR2093717A5 (en) | 1972-01-28 |
| SE365796B (en) | 1974-04-01 |
| AT310139B (en) | 1973-09-25 |
| NL7106999A (en) | 1971-11-30 |
| JPS5023018B1 (en) | 1975-08-05 |
| NL171051C (en) | 1983-02-01 |
| BR7103136D0 (en) | 1973-04-19 |
| NO136790C (en) | 1977-11-09 |
| CH557802A (en) | 1975-01-15 |
| DE2025632B2 (en) | 1976-09-02 |
| DE2025632A1 (en) | 1971-12-02 |
| ES390692A1 (en) | 1973-07-01 |
| NL171051B (en) | 1982-09-01 |
| NO136790B (en) | 1977-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |