CH102279A - Process for the manufacture of a garnet sulphide dye dyeing the vegetable fiber. - Google Patents

Process for the manufacture of a garnet sulphide dye dyeing the vegetable fiber.

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Publication number
CH102279A
CH102279A CH102279DA CH102279A CH 102279 A CH102279 A CH 102279A CH 102279D A CH102279D A CH 102279DA CH 102279 A CH102279 A CH 102279A
Authority
CH
Switzerland
Prior art keywords
garnet
manufacture
vegetable fiber
sulphide
dye
Prior art date
Application number
Other languages
French (fr)
Inventor
Grande-Paroisse Societe Chi La
Original Assignee
Azote & Prod Chim
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 Azote & Prod Chim filed Critical Azote & Prod Chim
Publication of CH102279A publication Critical patent/CH102279A/en

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Description

  

  Procédé de fabrication d'un colorant sulfuré grenat     teignant    la     fibre    végétale.    La présente     invention    a pour objet un  procédé de     fabrioation    -d'un colorant sulfuré  ayant la propriété     @de    teindre' sur bain     ré.due-          teur    la fibre végétale en nuances grenat, ré  sistant parfaitement à la lumière et     suscep-          tibles    d'être     chromatées        sans    -changement de  ton.  



  Suivant     #    procédé, on traite par un     poly-          sulfure        alcalin    le 2 : 4 :     8-trinitro-1-naphtol    à  l'état pur, formé à partir     @de,    la     dinitronaphta-          lin.e    1:5     préadablament,d-ébarrassée    de son iso  mère, .la     dinitronaphtaline    1<B>:8.</B>  



  A     titre        d'exemple,    le présent procédé peut  être     réalisé    par le mode opératoire     suivant:     On incorpore 10 kg de ce 2 : 4 :     8-trÏnitro,-          1-naphtol    dans un mélange fondu de 40 kg  de sulfure de sodium     cristallisé,    4 kg de  soufre et 8 litres     id'-eau.    Le tout est chauffé  à. une     température    voisine de 150   C.

   Il se  produit un fort     dégagement        d'ammoniaque    et  la masse     s'épaissait.    A- ce moment, on élève la       température    aux environs de<B>170' C;</B> il se  dégage     @do        l'hydrogène    sulfuré et l'on conti  nue à chauffer jusqu'à ce que ce dégagement    d'hydrogène sulfuré ait complètement cessé.  On     dissout    ensuite     le    produit obtenu     dans    800  litres d'eau et l'on précipite le colorant par un  acide.  



  On obtint     ainsi    un colorant grenat tei  gnant la fibre     végétale    sur bain de sulfure de  sodium. Les nuances     obtenues    au moyen de  ce     .colorant    supportent la lessive et     résistent          -l'une    façon     parfaite    à la lumière.  



       Les        proportions    indiquées     ci,dessus    ne sont       ,données    qu'à     titre        -l'indication    et pourront  être modifiées selon le ton cherché.



  Process for the manufacture of a garnet sulphide dye dyeing the vegetable fiber. The subject of the present invention is a process for the production of a sulphide dye having the property of dyeing the vegetable fiber on a straight bath in garnet shades, perfectly resistant to light and liable to be. chromated without change of tone.



  According to the method, the 2: 4: 8-trinitro-1-naphthol in the pure state, formed from dinitronaphthalin.e 1: 5, preadablament, is treated with an alkali metal sulfide. from its iso mother, dinitronaphthaline 1 <B>: 8. </B>



  By way of example, the present process can be carried out by the following procedure: 10 kg of this 2: 4: 8-trinitro, - 1-naphthol are incorporated into a molten mixture of 40 kg of crystallized sodium sulphide, 4 kg of sulfur and 8 liters of water. Everything is heated to. a temperature of around 150 C.

   A strong evolution of ammonia occurs and the mass thickens. At this moment, the temperature is raised to around <B> 170 'C; </B> the hydrogen sulphide is released and the heating is continued until this release of hydrogen sulphide has completely ceased. The product obtained is then dissolved in 800 liters of water and the dye is precipitated with an acid.



  A garnet dye was thus obtained which dyed the plant fiber on a sodium sulphide bath. The shades obtained by means of this dye support the washing powder and are perfectly resistant to light.



       The proportions indicated above are given only as an indication and may be modified according to the desired tone.

Claims (1)

REVENDICATION Un procédé -de fabrication d'un colorant sulfuré, suivant lequel on traite par un poly sulfure alicalin, le 2 :4 :8-trinitro-1-naphtol pur, résultant @de la transformation de la dini- tronaphtaline 1 : 5 !débarrassée complètement de son isomère la idinïtron.aphtaline 1 : CLAIM A process for the manufacture of a sulphide dye, according to which pure 2: 4: 8-trinitro-1-naphthol is treated with a polyalicalin sulfide, resulting @de the transformation of 1: 5 dinitronaphthaline! completely stripped of its isomer, idinitron.aphthaline 1: 8, ce 'colorant sulfuré possédant la propriété de teindme sur bain réiclucteur la fibre végétale en nuances grenat, résistant parfaitement à la .lumière et susceptibles d'être chromatées sans changement,d'@e ton. 8, this sulfur dye having the property of dyeing the vegetable fiber in garnet shades on a re-fluxing bath, perfectly resistant to light and capable of being chromated without change, of @ e tone. SOUS-REVENDICATION Procédé selon la revendication, dans le quel on,chauffe le 2:4 : 8-trinitro-1-naphtol pur avec une lessive de polysulfure ,alcalin jusqu'à évaporation de l'eau, puis on porte la température aux environs de<B>170'</B> C. SUB-CLAIM Process according to claim, in which the pure 2: 4: 8-trinitro-1-naphthol is heated with a polysulphide lye, alkaline until the water evaporates, then the temperature is brought to the vicinity by <B> 170 '</B> C.
CH102279D 1920-09-30 1921-07-25 Process for the manufacture of a garnet sulphide dye dyeing the vegetable fiber. CH102279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR102279X 1920-09-30

Publications (1)

Publication Number Publication Date
CH102279A true CH102279A (en) 1923-11-16

Family

ID=8871792

Family Applications (1)

Application Number Title Priority Date Filing Date
CH102279D CH102279A (en) 1920-09-30 1921-07-25 Process for the manufacture of a garnet sulphide dye dyeing the vegetable fiber.

Country Status (1)

Country Link
CH (1) CH102279A (en)

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