GB1185092A - Process for Preparing Methylenebisimino Diacetonitrile - Google Patents
Process for Preparing Methylenebisimino DiacetonitrileInfo
- Publication number
- GB1185092A GB1185092A GB1925667A GB1925667A GB1185092A GB 1185092 A GB1185092 A GB 1185092A GB 1925667 A GB1925667 A GB 1925667A GB 1925667 A GB1925667 A GB 1925667A GB 1185092 A GB1185092 A GB 1185092A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hcn
- diacetonitrile
- formaldehyde
- april
- adduct
- 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
1,185,092. Preparation of methylene bisimino diacetonitrile. COWLES CHEMICAL CO. 26 April, 1967 [26 April, 1966; 14 April, 1967], No. 19256/67. Heading C2C. Methylene bis-imino diacetonitrile is prepared by adding hydrogen cyanide to a liquid phase adduct of ammonia and formaldehyde while maintaining the pH of the said liquid phase at a strong acid value, preferably #1. The process may be conducted stepwise, adding ammonia and liquid HCN to the acidified adduct in two stages, the temperature of the reaction mixture at each stage being approximately 30‹ C. and 65‹ C. respectively (HCN alone may be used for the second stage) and if the stoichiometric amount of formaldehyde has not been used for the formation of the adduct, further quantities of formaldehyde may be added during one of the NH 3 -HCN or HCN addition stages.
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 |
|---|---|
| GB1185092A true GB1185092A (en) | 1970-03-18 |
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 (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1270269A Expired GB1185980A (en) | 1966-04-26 | 1967-04-26 | Process for preparing nitrilotriacetic acid |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1270369A Expired GB1185818A (en) | 1966-04-26 | 1967-04-26 | Process for Preparing Nitrilotriacetonitrile |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE697624A (en) |
| CH (2) | CH504410A (en) |
| DE (1) | DE1593793A1 (en) |
| GB (3) | GB1185980A (en) |
| NL (1) | NL6705717A (en) |
| SE (3) | SE364951B (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 CH594067A patent/CH504410A/en not_active IP Right Cessation
- 1967-04-25 CH CH231470A patent/CH522597A/en not_active IP Right Cessation
- 1967-04-26 GB GB1270269A patent/GB1185980A/en not_active Expired
- 1967-04-26 GB GB1925667A patent/GB1185092A/en not_active Expired
- 1967-04-26 SE SE209870A patent/SE364951B/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 SE588567A patent/SE346991B/xx unknown
- 1967-04-26 BE BE697624D patent/BE697624A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH522597A (en) | 1972-05-15 |
| NL6705717A (en) | 1967-10-27 |
| DE1593793A1 (en) | 1970-12-10 |
| SE346991B (en) | 1972-07-24 |
| GB1185980A (en) | 1970-04-02 |
| GB1185818A (en) | 1970-03-25 |
| CH504410A (en) | 1971-03-15 |
| SE364262B (en) | 1974-02-18 |
| SE364951B (en) | 1974-03-11 |
| BE697624A (en) | 1967-10-26 |
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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 |