GB1334991A - Process for the manufacture of nitrilotriacetonitrile - Google Patents
Process for the manufacture of nitrilotriacetonitrileInfo
- Publication number
- GB1334991A GB1334991A GB2085272A GB2085272A GB1334991A GB 1334991 A GB1334991 A GB 1334991A GB 2085272 A GB2085272 A GB 2085272A GB 2085272 A GB2085272 A GB 2085272A GB 1334991 A GB1334991 A GB 1334991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrilotriacetonitrile
- mother liquor
- ammonium salt
- acid
- manufacture
- 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
1334991 Nitrilotriacetonitrile KNAPSACK AG 4 May 1972 [29 May 1971] 20852/72 Addition to 1303788 Heading C2C Nitrilotriacetonitrile is produced as by the process of Specification 1,303,788, with the improvement comprising recovering the acid and the excess proportion of the ammonium salt introduced together with the starting solutions into the reaction by introducing the aqueous acid phase freed from nitrilotriacetonitrile, or the mother liquor, into an evaporator, evaporating therein between 50 and 75 weight per cent of the water contained in the mother liquor, treating the resulting liquid and acid evaporation residue with ammonia so as to establish a pH value of at most 6 therein, separating oily byproducts, which may be found to precipitate, therefrom, and returning the mother liquor saturated with the ammonium salt to the primary reaction zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2126881A DE2126881C3 (en) | 1971-05-29 | 1971-05-29 | Process for the continuous production of nitrilotriacetonitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1334991A true GB1334991A (en) | 1973-10-24 |
Family
ID=5809352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2085272A Expired GB1334991A (en) | 1971-05-29 | 1972-05-04 | Process for the manufacture of nitrilotriacetonitrile |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5527049B1 (en) |
| BE (1) | BE784116R (en) |
| BR (1) | BR7203438D0 (en) |
| CA (1) | CA975799A (en) |
| CH (1) | CH562783A5 (en) |
| DE (1) | DE2126881C3 (en) |
| ES (1) | ES402913A2 (en) |
| FR (1) | FR2140056B2 (en) |
| GB (1) | GB1334991A (en) |
| IT (1) | IT1045691B (en) |
| NL (1) | NL174141C (en) |
| NO (1) | NO136975C (en) |
| SE (1) | SE389863B (en) |
| ZA (1) | ZA722985B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0102343A1 (en) * | 1982-08-30 | 1984-03-07 | Monsanto Company | Process for producing nitrilotriacetonitrile |
| EP0102936A1 (en) * | 1982-08-30 | 1984-03-14 | Monsanto Company | Continuous process for producing nitrilotriacetonitrile |
| EP0102935A1 (en) * | 1982-08-30 | 1984-03-14 | Monsanto Company | Process for producing nitrilotriacetonitrile |
-
1971
- 1971-05-29 DE DE2126881A patent/DE2126881C3/en not_active Expired
-
1972
- 1972-05-02 ZA ZA722985A patent/ZA722985B/en unknown
- 1972-05-04 GB GB2085272A patent/GB1334991A/en not_active Expired
- 1972-05-16 CA CA142,246A patent/CA975799A/en not_active Expired
- 1972-05-18 ES ES402913A patent/ES402913A2/en not_active Expired
- 1972-05-19 CH CH748972A patent/CH562783A5/xx not_active IP Right Cessation
- 1972-05-25 IT IT50477/72A patent/IT1045691B/en active
- 1972-05-25 SE SE7206846A patent/SE389863B/en unknown
- 1972-05-26 NL NLAANVRAGE7207164,A patent/NL174141C/en active Search and Examination
- 1972-05-26 NO NO1875/72A patent/NO136975C/en unknown
- 1972-05-29 JP JP5323772A patent/JPS5527049B1/ja active Pending
- 1972-05-29 BR BR3438/72A patent/BR7203438D0/en unknown
- 1972-05-29 BE BE784116A patent/BE784116R/en active
- 1972-05-29 FR FR727219168A patent/FR2140056B2/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0102343A1 (en) * | 1982-08-30 | 1984-03-07 | Monsanto Company | Process for producing nitrilotriacetonitrile |
| EP0102936A1 (en) * | 1982-08-30 | 1984-03-14 | Monsanto Company | Continuous process for producing nitrilotriacetonitrile |
| EP0102935A1 (en) * | 1982-08-30 | 1984-03-14 | Monsanto Company | Process for producing nitrilotriacetonitrile |
Also Published As
| Publication number | Publication date |
|---|---|
| ES402913A2 (en) | 1975-04-16 |
| BE784116R (en) | 1972-11-29 |
| SE389863B (en) | 1976-11-22 |
| ZA722985B (en) | 1973-02-28 |
| CH562783A5 (en) | 1975-06-13 |
| FR2140056B2 (en) | 1973-07-13 |
| FR2140056A2 (en) | 1973-01-12 |
| BR7203438D0 (en) | 1973-05-31 |
| DE2126881B2 (en) | 1979-09-20 |
| NL7207164A (en) | 1972-12-01 |
| NL174141C (en) | 1984-05-01 |
| DE2126881A1 (en) | 1972-11-30 |
| IT1045691B (en) | 1980-06-10 |
| JPS5527049B1 (en) | 1980-07-17 |
| DE2126881C3 (en) | 1980-06-04 |
| NO136975B (en) | 1977-08-29 |
| NL174141B (en) | 1983-12-01 |
| NO136975C (en) | 1977-12-07 |
| CA975799A (en) | 1975-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |