CH296521A - Process for the preparation of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid. - Google Patents
Process for the preparation of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid.Info
- Publication number
- CH296521A CH296521A CH296521DA CH296521A CH 296521 A CH296521 A CH 296521A CH 296521D A CH296521D A CH 296521DA CH 296521 A CH296521 A CH 296521A
- Authority
- CH
- Switzerland
- Prior art keywords
- diamino
- tetraacetic acid
- aliphatic
- complex
- forming
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/23—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton
- C07C323/24—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/25—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/342—Amino-carboxylic acids; Betaines; Aminosulfonic acids; Sulfo-betaines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 292051. Verfahren zur Herstellung einer aliphatischen, komplexbildenden Diamino-N,N'.tetraessigsäure. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung einer aliphati- sehen, komplexbildenden Diamino-N,N'-tetra- essigsäure. Das Verfahren ist dadurch gekenn- zeichnet, dass man ss,ss'-Diamino-diäthylsulfid- N,N'-tetraacetonitril verseift.
Die erhaltene neue Verbindung, die niamino - diä,th y lsulfid - N,N' - tetraessigsäure, stellt ein weisses Pulver dar. Sie soll als Tex tilhilfsmittel Verwendung finden.
Beispiel: 25,2 Teile ss,ss'-Diamino-diäthylsiilfid-N,N'- letraacetonitril, erhältlich aus ss,ss'-Diamino- cliätliyisulfid, Formaldehyd und Blausäure nach an sich bekannter Methode, werden mit 120 Teilen 76,7%iger Natronlauge am Rüek- fluss so lange auf 95 bis 105 erhitzt, bis kein Ammoniak mehr entweicht. Die Lösung wird hierauf etwas verdünnt und dann filtriert.
Nach Filtration der Reaktionslösung versetzt man mit Salzsäure 30 % ig bis zur schwach kongosauren Reaktion und verrührt alsdann bei mässiger Temperatur mit. etwa 2500 Tei len Methanol. Nach längerem Stehen scheidet sich die gebildete Tetraessigsäure langsam ab.
Durch Umkristallisation aus Wasser wird die Diamino - diäthylsulfid - N,N'-tetraessig- säure in reiner Form als weisses Pulver er halten.
<B> Additional patent </B> to main patent no. 292051. Process for the production of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid. The subject of the present patent is a process for the preparation of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid. The process is characterized in that ss, ss'-diamino-diethyl sulfide-N, N'-tetraacetonitrile is saponified.
The new compound obtained, niamino-diä, thylsulfid-N, N'-tetraacetic acid, is a white powder. It is said to be used as a textile auxiliary.
Example: 25.2 parts of ss, ss'-diamino-diethylsilfide-N, N'-letraacetonitrile, obtainable from ss, ss'-diamino-cliätliyisulfid, formaldehyde and hydrocyanic acid according to a known method, with 120 parts of 76.7% Sodium hydroxide solution heated to 95 to 105 on the Rüek river until no more ammonia escapes. The solution is then slightly diluted and then filtered.
After filtration of the reaction solution, 30% strength hydrochloric acid is added until the reaction is weakly Congo acidic, and the mixture is then stirred at a moderate temperature. about 2500 parts of methanol. After standing for a long time, the tetraacetic acid formed slowly separates out.
By recrystallization from water, the diamino - diethyl sulfide - N, N'-tetraacetic acid is obtained in pure form as a white powder.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH296521T | 1950-10-24 | ||
CH292051T | 1950-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH296521A true CH296521A (en) | 1954-02-15 |
Family
ID=25733174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH296521D CH296521A (en) | 1950-10-24 | 1950-10-24 | Process for the preparation of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH296521A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971955C (en) * | 1954-06-21 | 1959-04-23 | Fulvio Bracco Dr | Process for the production of complex-forming, sulfur-containing aminocarboxylic acids |
-
1950
- 1950-10-24 CH CH296521D patent/CH296521A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971955C (en) * | 1954-06-21 | 1959-04-23 | Fulvio Bracco Dr | Process for the production of complex-forming, sulfur-containing aminocarboxylic acids |
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