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
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH296521A publication Critical patent/CH296521A/en

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

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)

PATENTANSPRUCH: Verfahren zur Herstellung einer aliphati- sehen, komplexbildenden Diamino-N,N'-tetra- essigsäure, dadurch gekennzeichnet, dass man ss,ss' - Diamino - diäthyl"Rilfid -N,N'- tetraaceto- nitril verseift. Die erhaltene neue Verbindung; die ss,ss'- Diamino - diäthylsulfid - N, N'- tetraessigsä.ire, stellt ein weisses Pulver dar. PATENT CLAIM: Process for the production of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid, characterized in that ss, ss' - diamino - diethyl "Rilfid -N, N'-tetraacetonitrile is saponified new compound; the ss, ss'- diamino - diethyl sulfide - N, N'- tetraacetic acid, is a white powder.
CH296521D 1950-10-24 1950-10-24 Process for the preparation of an aliphatic, complex-forming diamino-N, N'-tetraacetic acid. CH296521A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH292051T 1950-10-24
CH296521T 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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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