GB895681A - Improvements in the preparation of glycolonitrile - Google Patents
Improvements in the preparation of glycolonitrileInfo
- Publication number
- GB895681A GB895681A GB215759A GB215759A GB895681A GB 895681 A GB895681 A GB 895681A GB 215759 A GB215759 A GB 215759A GB 215759 A GB215759 A GB 215759A GB 895681 A GB895681 A GB 895681A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glycolonitrile
- reaction
- liquid phase
- reaction medium
- liquid
- 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
Glycolonitrile is prepared by establishing a liquid reaction medium containing liquid hydrogen cyanide, maintaining said reaction medium in the liquid phase and progressively adding a formaldehyde-yielding material at a rate such that most of it is substantially immediately reacted with the cyanide present to form glycolonitrile. Aqueous or non-aqueous systems may be used and the liquid phase may be maintained by using appropriate conditions of temperature, pressure and reflux, reaction temperatures of 0 DEG C. to 100 DEG C. being mentioned. The process may be operated continuously or batchwise. Alkaline or acid catalysts may be present. The glycolonitrile may be converted to amineacetic acids, such as ethylenediamine-tetracetic acid, by reaction with the amine in the presence of alkali hydroxide. Other specified amines are mono- and di-hydroxyethylethylenediamine, diethylenetriamine, triethylenepentamine and hydroxyethyl substitution products thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB215759A GB895681A (en) | 1959-01-20 | 1959-01-20 | Improvements in the preparation of glycolonitrile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB215759A GB895681A (en) | 1959-01-20 | 1959-01-20 | Improvements in the preparation of glycolonitrile |
Publications (1)
Publication Number | Publication Date |
---|---|
GB895681A true GB895681A (en) | 1962-05-09 |
Family
ID=9734595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB215759A Expired GB895681A (en) | 1959-01-20 | 1959-01-20 | Improvements in the preparation of glycolonitrile |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB895681A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102875400A (en) * | 2012-09-21 | 2013-01-16 | 烟台万华聚氨酯股份有限公司 | Diethylenetriamine pentaacetic acid preparation method |
-
1959
- 1959-01-20 GB GB215759A patent/GB895681A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102875400A (en) * | 2012-09-21 | 2013-01-16 | 烟台万华聚氨酯股份有限公司 | Diethylenetriamine pentaacetic acid preparation method |
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