CH131498A - Process for the preparation of the sulfamic acid of diphenylamine. - Google Patents

Process for the preparation of the sulfamic acid of diphenylamine.

Info

Publication number
CH131498A
CH131498A CH131498DA CH131498A CH 131498 A CH131498 A CH 131498A CH 131498D A CH131498D A CH 131498DA CH 131498 A CH131498 A CH 131498A
Authority
CH
Switzerland
Prior art keywords
diphenylamine
sulfamic acid
preparation
acid
sulfamic
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH131498A publication Critical patent/CH131498A/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  verfahren zur Darstellung der     Sulfaminsäure    des     Diphenylamins.       Gegenstand dieser Erfindung ist ein Ver  fahren zur Darstellung der     Sulfaminsäure     des     Diphenylamins,    welches dadurch ge  kennzeichnet ist, dass man S03 abgebende  Mittel auf     Diphenylamin    oder     diphenylamin-          haltige    Gemische in Gegenwart eines säure  bindenden Mittels, mit oder ohne Anwen  dung eines indifferenten     Lösungs-    oder     Ver-          dünnungsmittels,    einwirken lässt.  



       Beispiel:     Zu einer Lösung von 169 Gewichtsteilen       Diphenylamin    in 500 Gewichtsteilen wasser  freiem     Pyri.din    wird ein Gemisch aus 300  Gewichtsteilen     Chlorsulfonsäure    und 800  Gewichtsteilen trockenem     Pyridin    gegeben  und diese Mischung auf etwa 50   solange  erwärmt, bis die     Sulfaminsäurebildung    be  endet ist. Nach Eintragen des Reaktionsge  misches in überschüssige     Sodalösung    bläst  man das     Pyridin    mit Wasserdampf ab und    salzt aus der filtrierten wässerig-alkalischen       Rückstandlösun-g    die     Sulfaminsäure    aus.

   Sie  kristallisiert als     Natriumsalz    in Form von  farblosen Blättchen, ist in Wasser sehr  leicht löslich und erleidet beim Erwärmen  mit verdünnten Säuren eine Spaltung in  Schwefelsäure und     Diphenylamin.  



  process for the preparation of the sulfamic acid of diphenylamine. This invention relates to a process for the preparation of the sulfamic acid of diphenylamine, which is characterized in that S03-releasing agents on diphenylamine or diphenylamine-containing mixtures in the presence of an acid-binding agent, with or without application of an inert solvent or Ver - thinner, leaves to act.



       Example: A mixture of 300 parts by weight of chlorosulfonic acid and 800 parts by weight of dry pyridine is added to a solution of 169 parts by weight of diphenylamine in 500 parts by weight of anhydrous pyridine and this mixture is heated to about 50 until sulfamic acid formation has ended. After the reaction mixture has been introduced into excess soda solution, the pyridine is blown off with steam and the sulfamic acid is salted out from the filtered aqueous-alkaline residue solution.

   It crystallizes as the sodium salt in the form of colorless flakes, is very easily soluble in water and, when heated with dilute acids, breaks down into sulfuric acid and diphenylamine.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung der Diphenyl- aminsulfaminsäure, dadurch gekennzeichnet, dass' man S03 abgebende Mittel auf Diphenyl- amin in Gegenwart eines säurebindenden Mittels einwirken lässt. Die Diphenylaminsulfaminsäure ist ein wertvolles Zwischenprodukt. ,Sie kristalli siert als Natriumsalz in Form von farblosen Blättchen. PATENT CLAIM: Process for the preparation of diphenylamine sulfamic acid, characterized in that SO3-releasing agents are allowed to act on diphenylamine in the presence of an acid-binding agent. Diphenylamine sulfamic acid is a valuable intermediate. , It crystallizes as the sodium salt in the form of colorless flakes. Sie ist eine empfindliche, in 'Was ser leicht lösliche Verbindung, die bei der Einwirkung von verdünnten Säuren in de: AVärme in Diphenylamin und Schwefelsäure ;espalten wird. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch ;ekennzeichnet, dass man diphenylamin- haltige Gemische als Ausgangsprodukt ver wendet. It is a sensitive compound which is easily soluble in water, which, when exposed to dilute acids, is split into diphenylamine and sulfuric acid. SUBSTANTIAL CLAIM: Method according to patent claim, characterized in that mixtures containing diphenylamine are used as the starting product.
CH131498D 1926-07-31 1927-07-29 Process for the preparation of the sulfamic acid of diphenylamine. CH131498A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE131498X 1926-07-31
CH129880T 1927-07-29

Publications (1)

Publication Number Publication Date
CH131498A true CH131498A (en) 1929-02-15

Family

ID=28042578

Family Applications (1)

Application Number Title Priority Date Filing Date
CH131498D CH131498A (en) 1926-07-31 1927-07-29 Process for the preparation of the sulfamic acid of diphenylamine.

Country Status (1)

Country Link
CH (1) CH131498A (en)

Similar Documents

Publication Publication Date Title
CH131498A (en) Process for the preparation of the sulfamic acid of diphenylamine.
CH232280A (en) Process for the preparation of a water-soluble, higher molecular weight acyl biguanide.
DE511525C (en) Process for the preparation of sulfamic acids of secondary bases
DE561423C (en) Process for the preparation of nitrogen-containing sulfonation products of higher paraffinic hydrocarbons
DE555311C (en) Process for the production of wetting and emulsifying agents
DE685961C (en) Process for the preparation of substituted aromatic sulfonic acids
DE478332C (en) Process for the preparation of aromatic sulphonic acids
CH279170A (en) Process for the preparation of an acylating agent.
CH131288A (en) Process for the preparation of a polysulfide ester of an aromatic carboxylic acid.
CH226817A (en) Process for producing a water-soluble compound.
CH137042A (en) Process for the preparation of m-chloro-p-acetylaminophenylstibic acid.
CH131497A (en) Process for the preparation of the sulfamic acid of monomethylaniline.
CH122766A (en) Process for producing an iodopyridine compound.
CH272708A (en) Process for the preparation of a salt of 1-phenyl-cyclopentane-1-carboxylic acid B-diethylamino-ethyl ester.
CH148487A (en) Method for the quantitative separation of 2,3-dihalo- and 2,5-dihalogen-4-amino-1-methylbenzene.
CH138757A (en) Process for the preparation of 2.5.6-trichloro-1.3-dimethylbenzene-4-sulfonic acid.
CH182581A (en) Process for the preparation of a product which can be used as a wetting, washing, emulsifying, dispersing, leveling and softening agent.
CH156308A (en) Process for the preparation of a sulfuric acid ester.
DE1620680A1 (en) Process for the preparation of 2-ethylisonicotinic acid ethioamide
CH155992A (en) Process for the production of a new ester mixture that is valuable as an auxiliary for the textile industry.
CH143698A (en) Process for the preparation of a new condensation product of the benzanthrone series.
CH127443A (en) Process for the preparation of an azo dye.
CH213565A (en) Process for the preparation of a higher molecular weight α-substituted benzylamine sulfonic acid.
CH204237A (en) Process for the production of a new textile auxiliary.
CH128127A (en) Process for the preparation of Bz1-oxybenzanthrone.