CH147692A - Process for the preparation of a product which can be used as an azo dye component. - Google Patents

Process for the preparation of a product which can be used as an azo dye component.

Info

Publication number
CH147692A
CH147692A CH147692DA CH147692A CH 147692 A CH147692 A CH 147692A CH 147692D A CH147692D A CH 147692DA CH 147692 A CH147692 A CH 147692A
Authority
CH
Switzerland
Prior art keywords
water
product
azo dye
dye component
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Kalle Co
Original Assignee
Kalle & Co 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 Kalle & Co Ag filed Critical Kalle & Co Ag
Publication of CH147692A publication Critical patent/CH147692A/en

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

Description

  

      'Verfahren    zur Herstellung eines als     Azofarbstoffkomponente    verwendbaren     Produktes.            (xegenstand    dieses Patentes ist ein Ver  fahren zur Herstellung eines als     Azofarbstoff-          komponente    verwendbaren Produktes, welches  dadurch gekennzeichnet ist, dass man 1 .     5-          Aminonaphtol    in der Wärme mit     Dicyandi-          amid    umsetzt.  



       Beispiel:     195 Gewichtsteile (1     Mol)    salzsaures     1.5-          Aminona.phtol    werden zusammen mit 125  Gewichtsteilen     Dicyandiamid    in 500     cms     Wasser ungefähr<B>10-15</B> Stunden erhitzt.  Aus der mit Tierkohle behandelten Lösung  erhält man das 5 -     Oxynaphtalin-l-biguanidin     als Chlorhydrat. Es kristallisiert aus Wasser  in breiten, langen Nadeln vom Schmelzpunkt       216-2170.    Es ist schwer löslich in Alkohol,  Aceton, leicht in Wasser.

   Die freie Base  kristallisiert aus Wasser in kleinen Blättchen;  sie ist leicht löslich in verdünnten     Alkalien       und heissem Wasser, sehr wenig in Äther.  Sie schmilzt unter Aufblähen bei 143-144  .



      Process for the preparation of a product which can be used as an azo dye component. (The subject of this patent is a process for the production of a product that can be used as an azo dye component, which is characterized in that 1,5-aminonaphthol is reacted with dicyandiamide under heat.



       Example: 195 parts by weight (1 mol) of hydrochloric acid 1.5-aminona.phtol are heated together with 125 parts by weight of dicyandiamide in 500 cms of water for about 10-15 hours. The 5-oxynaphthalene-1-biguanidine is obtained as chlorohydrate from the solution treated with animal charcoal. It crystallizes from water in broad, long needles with a melting point of 216-2170. It is sparingly soluble in alcohol, acetone, slightly soluble in water.

   The free base crystallizes from water in small flakes; it is easily soluble in dilute alkalis and hot water, very little in ether. It melts with puffing at 143-144.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines als Azo- farbstoükomponente verwendbaren Produktes, welches dadurch gekennzeichnet ist, dass man 1.5-Aminoiiaphtol in der Wärme mit Dicyan- diamid umsetzt. Die so erhaltene freie Base kristallisiert aus Wasser in kleinen Blättchen - sie ist leicht löslich in verdünnten Alkalien und heissem Wasser, sehi# wenig in Äther. PATENT CLAIM: A process for the production of a product which can be used as an azo dye component, which is characterized in that 1,5-amino-naphthol is reacted with hot dicyanodiamide. The free base thus obtained crystallizes from water in small leaflets - it is easily soluble in dilute alkalis and hot water, very little in ether. Sie schmilzt unter Aufblähen bei 143-1440. Ihr salzsaures Salz kristallisiert aus Was ser in breiten, langen Nadeln vom Schmelz punkt 216-21.70. Es ist schwer löslich in Alkohol, Aceton, leicht in Wasser. It melts with puffing at 143-1440. Its hydrochloric acid salt crystallizes from water in broad, long needles with a melting point of 216-21.70. It is sparingly soluble in alcohol, acetone, slightly soluble in water.
CH147692D 1928-10-19 1929-10-11 Process for the preparation of a product which can be used as an azo dye component. CH147692A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE147692X 1928-10-19
CH145994T 1929-10-11

Publications (1)

Publication Number Publication Date
CH147692A true CH147692A (en) 1931-06-15

Family

ID=25714783

Family Applications (1)

Application Number Title Priority Date Filing Date
CH147692D CH147692A (en) 1928-10-19 1929-10-11 Process for the preparation of a product which can be used as an azo dye component.

Country Status (1)

Country Link
CH (1) CH147692A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6419976B1 (en) 1997-09-02 2002-07-16 Inland Empire Foods, Inc. Bean-nut popping beans

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6419976B1 (en) 1997-09-02 2002-07-16 Inland Empire Foods, Inc. Bean-nut popping beans

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