GB1185818A - Process for Preparing Nitrilotriacetonitrile - Google Patents
Process for Preparing NitrilotriacetonitrileInfo
- Publication number
- GB1185818A GB1185818A GB1270369A GB1270369A GB1185818A GB 1185818 A GB1185818 A GB 1185818A GB 1270369 A GB1270369 A GB 1270369A GB 1270369 A GB1270369 A GB 1270369A GB 1185818 A GB1185818 A GB 1185818A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrilotriacetonitrile
- iminodiacetonitrile
- april
- bis
- methylene
- 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)
Abstract
1,185,818. Preparation of nitrilotriacetonitrile. COWLES CHEMICAL CO. 26 April, 1967 [26 April, 1966; 14 April, 1967], No. 12703/69. Divided out of 1,185,092. Heading C2C. Nitrilotriacetonitrile is prepared by reacting in liquid phase hydrogen cyanide, formaldehyde and methylene-bis-iminodiacetonitrile. The latter compound may be formed in situ by adding liquid hydrogen cyanide to a liquid phase adduct of formaldehyde and ammonia while maintaining the pH of said phase at a strongly acid value (< 2). The order of addition of the HCN and HCHO can be varied, and sufficient of one or other of these reagents may already be present in the intermediate methylene-bis-iminodiacetonitrile phase to complete the synthesis without further addition. The temperature of the reaction is preferably kept between 50‹ C. and 85‹ C., while the initial step of producing methylene-bis-iminodiacetonitrile is effected below 50‹ C., or by addition of ammonia and HCN in two stages, at approximately 35‹ C. and 65‹ C. respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54543566A | 1966-04-26 | 1966-04-26 | |
| US63087567A | 1967-04-14 | 1967-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1185818A true GB1185818A (en) | 1970-03-25 |
Family
ID=27067937
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1270269A Expired GB1185980A (en) | 1966-04-26 | 1967-04-26 | Process for preparing nitrilotriacetic acid |
| GB1925667A Expired GB1185092A (en) | 1966-04-26 | 1967-04-26 | Process for Preparing Methylenebisimino Diacetonitrile |
| GB1270369A Expired GB1185818A (en) | 1966-04-26 | 1967-04-26 | Process for Preparing Nitrilotriacetonitrile |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1270269A Expired GB1185980A (en) | 1966-04-26 | 1967-04-26 | Process for preparing nitrilotriacetic acid |
| GB1925667A Expired GB1185092A (en) | 1966-04-26 | 1967-04-26 | Process for Preparing Methylenebisimino Diacetonitrile |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE697624A (en) |
| CH (2) | CH522597A (en) |
| DE (1) | DE1593793A1 (en) |
| GB (3) | GB1185980A (en) |
| NL (1) | NL6705717A (en) |
| SE (3) | SE346991B (en) |
-
1967
- 1967-04-22 DE DE19671593793 patent/DE1593793A1/en active Pending
- 1967-04-24 NL NL6705717A patent/NL6705717A/xx unknown
- 1967-04-25 CH CH231470A patent/CH522597A/en not_active IP Right Cessation
- 1967-04-25 CH CH594067A patent/CH504410A/en not_active IP Right Cessation
- 1967-04-26 GB GB1270269A patent/GB1185980A/en not_active Expired
- 1967-04-26 BE BE697624D patent/BE697624A/xx unknown
- 1967-04-26 GB GB1925667A patent/GB1185092A/en not_active Expired
- 1967-04-26 SE SE588567A patent/SE346991B/xx unknown
- 1967-04-26 GB GB1270369A patent/GB1185818A/en not_active Expired
- 1967-04-26 SE SE209770A patent/SE364262B/xx unknown
- 1967-04-26 SE SE209870A patent/SE364951B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE364951B (en) | 1974-03-11 |
| CH522597A (en) | 1972-05-15 |
| DE1593793A1 (en) | 1970-12-10 |
| GB1185980A (en) | 1970-04-02 |
| GB1185092A (en) | 1970-03-18 |
| SE346991B (en) | 1972-07-24 |
| SE364262B (en) | 1974-02-18 |
| CH504410A (en) | 1971-03-15 |
| NL6705717A (en) | 1967-10-27 |
| BE697624A (en) | 1967-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1220527A (en) | Process for producing acrylonitrile | |
| GB1135265A (en) | Preparation of amine-nitriles, and acids and salts derived therefrom | |
| GB1362377A (en) | Process for the preparation of dl-methionine | |
| GB1149301A (en) | Process of synthesizing melamine | |
| KR870008835A (en) | Method for preparing iminodiacetonitrile | |
| GB984370A (en) | The manufacture of unsaturated aliphatic nitriles and catalysts therefor | |
| GB1185818A (en) | Process for Preparing Nitrilotriacetonitrile | |
| GB1368506A (en) | Process for preparing cyanoethylated ketones | |
| GB1321563A (en) | Preparation of 3,5-dinitrobenzotrifluoride compounds | |
| GB1020491A (en) | A process for the preparation of ornithine | |
| GB1189050A (en) | Process for Preparing Nitrilotriacetonitrile | |
| GB1388709A (en) | Process for preparing sigma,omega-diaminocarboxylic acids | |
| GB1298279A (en) | Process for the preparation of alpha glucoheptonate dihydrate | |
| ES383811A1 (en) | Continuous preparation of cyclohexanone oxime | |
| GB1163684A (en) | Process for the Preparation of Nitrilotriacetonitrile and Related Compounds. | |
| ES307675A1 (en) | A procedure for the preparation of oximes. (Machine-translation by Google Translate, not legally binding) | |
| ES392309A1 (en) | Process for the preparation of oximes | |
| ES320841A1 (en) | Process for preparing azines | |
| GB1289243A (en) | ||
| ES402913A2 (en) | Process for the manufacture of nitrilotriacetonitrile | |
| GB1342045A (en) | Process for producing nitrilotriacetonitrile | |
| GB1294674A (en) | Process for the preparation of nitrilotriacetonitrile | |
| GB1137686A (en) | Production of alkali metal salts of polyamine polyacetic acids | |
| ES390692A1 (en) | Procedure for the preparation of nitrilotriacetonitrilo. (Machine-translation by Google Translate, not legally binding) | |
| GB1335456A (en) | Process for producing liquid fertilizers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 414F | Notice of opposition given (sect. 14/1949) | ||
| 414B | Case decided by the comptroller ** grants allowed (sect. 14/1949) | ||
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |