CH388904A - Process for dyeing textile fibers black with sodium diphenylamino-para-sulfamate with prior oxidation - Google Patents
Process for dyeing textile fibers black with sodium diphenylamino-para-sulfamate with prior oxidationInfo
- Publication number
- CH388904A CH388904A CH822861A CH822861A CH388904A CH 388904 A CH388904 A CH 388904A CH 822861 A CH822861 A CH 822861A CH 822861 A CH822861 A CH 822861A CH 388904 A CH388904 A CH 388904A
- Authority
- CH
- Switzerland
- Prior art keywords
- sodium
- para
- diphenylamino
- bath
- sulfamate
- Prior art date
Links
- 230000003647 oxidation Effects 0.000 title claims description 12
- 238000007254 oxidation reaction Methods 0.000 title claims description 12
- 238000004043 dyeing Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims description 8
- 229910052708 sodium Inorganic materials 0.000 title claims description 8
- 239000011734 sodium Substances 0.000 title claims description 8
- 239000000835 fiber Substances 0.000 title claims description 5
- 239000004753 textile Substances 0.000 title description 4
- 241000872198 Serjania polyphylla Species 0.000 title description 3
- 230000001590 oxidative effect Effects 0.000 claims description 8
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 claims description 6
- 229960002218 sodium chlorite Drugs 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000004758 synthetic textile Substances 0.000 claims description 3
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 claims description 2
- 125000002837 carbocyclic group Chemical group 0.000 claims description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 2
- -1 heterocyclic amines Chemical class 0.000 claims description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims 2
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- 150000001879 copper Chemical class 0.000 claims 1
- 229940124530 sulfonamide Drugs 0.000 claims 1
- 150000003456 sulfonamides Chemical class 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 3
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- MMCPOSDMTGQNKG-UHFFFAOYSA-N anilinium chloride Chemical compound Cl.NC1=CC=CC=C1 MMCPOSDMTGQNKG-UHFFFAOYSA-N 0.000 description 2
- 229910001919 chlorite Inorganic materials 0.000 description 2
- 229910052619 chlorite group Inorganic materials 0.000 description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 2
- 235000019801 trisodium phosphate Nutrition 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 1
- 240000008564 Boehmeria nivea Species 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000004959 Rilsan Substances 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229960003280 cupric chloride Drugs 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 description 1
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- ATGUVEKSASEFFO-UHFFFAOYSA-N p-aminodiphenylamine Chemical compound C1=CC(N)=CC=C1NC1=CC=CC=C1 ATGUVEKSASEFFO-UHFFFAOYSA-N 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/32—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using oxidation dyes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Description
Procédé de teinture en noir de fibres textiles avec le diphénylamino-para-sulfamate de sodium avec oxydation préalable La présente invention a pour objet un nouveau procédé de teinture en noir des fibres textiles végé tales, animales, artificielles et synthétiques, avec le diphénylamino-para-sulfamate de sodium, et avec oxydation préalable des fibres.
L'invention est caractérisée en ce que cette oxy dation préalable ou mordançage oxydant s'effectue à l'aide de chlorite de sodium. Une oxydation des textiles préalablement à la teinture au noir d'aniline est déjà connue par les brevets français Nos 333386 et 557452. Suivant ces brevets on utilise comme oxydant l'acide chromique, des chromates ou bichro mates en solution acide, le nitrate de fer. D'autre part, le brevet français No 594325 décrit la teinture de la laine en bain acide à l'aide du sel sodique de la combinaison sulfonique de la p-amino-diphényl- amine (diphénylamino-para-sulfamate de sodium) ; la teinture est ici suivie d'une oxydation au bichromate.
L'oxydation préalable exécutée avec les oxydants cités dans ces brevets conduit à des noirs avec une nuance bleuâtre ou rougeâtre alors que l'oxydation préalable à l'aide de chlorite de sodium donne un beau noir profond.
Le procédé de teinture selon la présente inven tion fournit un noir profond très solide et inverdis- sable sur les textiles naturels (laine, coton, soie, fin, jute, ramie, etc.) et les textiles artificiels ou synthé tiques (rayonne, fibranne, nylon, Rilsan , Ter gal , etc.).
Ce noir est solide à la lumière, au lavage, au frottement, au stockage. Le mordançage se fait d'ordinaire à une tempé rature de 35 à 50 C et à pH 2 pendant deux heures environ. Pour la teinture, le diphénylamino-para- sulfamate de sodium peut être utilisé seul ou avec adjonction d'autres amines ou aminophénols carbo- cycliques ou hétérocycliques. On ajoute de préférence au bain de teinture un agent d'oxydation et un cata lyseur.
La teinture se fait habituellement à la tem pérature de 35 à 65c, C et à pH 3,5 à 4 pendant environ deux à six heures suivant les matières à teindre. Vient ensuite un développement â. l'air à la température ambiante.
L'invention est exposée ci-après à l'aide d'exem ples <I>Exemple 1</I> On dissout dans un litre d'eau 3 g de carbonate de soude anhydre 3 g de phosphate trisodique 1 g de mouillant au choix, connu en soi.
Une pièce de coton est traitée pendant une heure dans ce bain, chauffé à 60o C, puis rincée.
On prépare le bain de mordançage oxydant par dissolution dans un litre d'eau de 30 g de chlorure de sodium 20 g de persulfate de sodium 1 g de chlorite de sodium 2 g de chlorure de cuivre 1 ml d'acide sulfurique à 660 Bé 0,1 g de vanadate d'ammonium pH 2 ; on maintient la pièce dans ce bain pendant une nuit à 350 C et on l'essore.
Le bain de teinture proprement dit dans lequel la pièce est traitée ensuite est composé de (par litre) 30 g de sel d'aniline 10 g de diphénylamino-para-sulfamate de sodium 10 g de chlorate de sodium 10 g de sulfate d'ammonium.
On traite pendant une nuit à 400 C. On oxyde à l'air à 201, C.
La pièce teinte est lavée dans un bain contenant par litre 6 g de savon en paillettes 1 g de carbonate de sodium anhydre 2 ml d'alcool sulfoné pendant une heure à 50 C, on rince, on relave dans un bain contenant 2 ml d'alcool sulfoné à 300 C pendant 30 minutes et on rince de nouveau.
La pièce ainsi traitée est d'une belle couleur noire, résistant à la lumière, au lavage et au frotte ment.
Une pièce teinte de manière identique, mais sans adjonction de chlorite au bain de mordançage, mon tre un reflet rougeâtre. <I>Exemple 2</I> On traite une pièce de laine dans les bains sui vants (par litre de solution) <I>10) Préparation alcaline</I> 5 g de carbonate de sodium anhydre 1 g de phosphate trisodique 0,6 g de détergent en poudre 2 ml d'un égalisant.
Température 45-55 C, pH 10, 1 heure 15 minutes. 2(l) <I>Mordançage oxydant</I> 20 g de chlorure de sodium 20 g de persulfate d'ammonium 0,5 g de chlorite de sodium 1 ml d'acide sulfurique à 66o Bé 2 g de chlorure cuivrique 0,1 g de vanadate d'ammonium, le pH de la solution s'établit à 2, on fait agir à 35,1 C pendant une nuit, puis on essore sans rincer.
<I>30) Bain de teinture</I> 10 g de sel d'aniline 10 g de diphénylamino-para-sulfamate de sodium 1 g de para-phénylènediamine 1 g de méta-crésylènediamine 10 g de chlorate de soude 10 g de sel d'ammonium 0,001 g de vanadate d'ammonium 2 ml d'égalisant.
On traite à 35-60 C, pH 4, 2 heures, et on oxyde une nuit à 180 C. 4 ) <I>Bain de lavage</I> 3 ml d'alcool sulfoné à 40o C, 1 heure, rincer. <I>50) Bain de lavage</I> 3 ml d'alcool sulfoné 1 g de bicarbonate de soude 400 C pendant 2 heures ; rincer ; le pH de ce bain s'établit à 7.
On termine par un dernier rinçage avec 0,5 g d'un détergent 0,25 g d'hydrosulfite à 35o C pendant 30 minutes. Rincer à l'eau claire. La pièce est teinte en un beau noir profond. En opérant dans des conditions identiques, mais sans adjonction de chlorite au bain de mordançage, on obtient une teinture noire manifestant un reflet rougeâtre.
Process for dyeing textile fibers black with sodium diphenylamino-para-sulfamate with prior oxidation The present invention relates to a new process for dyeing plant, animal, artificial and synthetic textile fibers black with diphenylamino-para -sodium sulphamate, and with prior oxidation of the fibers.
The invention is characterized in that this prior oxidation or oxidative mordanting is carried out using sodium chlorite. An oxidation of textiles prior to dyeing with aniline black is already known from French patents Nos. 333386 and 557452. According to these patents, chromic acid, chromates or bichro mates in acid solution, iron nitrate, are used as oxidant. . On the other hand, French patent No. 594325 describes the dyeing of wool in an acid bath using the sodium salt of the sulfonic combination of p-amino-diphenyl-amine (sodium diphenylamino-para-sulfamate); the dyeing is here followed by a dichromate oxidation.
The prior oxidation carried out with the oxidants cited in these patents leads to blacks with a bluish or reddish tint, while the prior oxidation using sodium chlorite gives a beautiful deep black.
The dyeing process according to the present invention provides a very solid and invertible deep black on natural textiles (wool, cotton, silk, fine, jute, ramie, etc.) and artificial or synthetic textiles (rayon, fibranne). , nylon, Rilsan, Ter gal, etc.).
This black is solid to light, to washing, to rubbing, to storage. Etching is usually done at 35-50 ° C and pH 2 for about two hours. For dyeing, sodium diphenylamino-para-sulfamate can be used alone or with the addition of other carbocyclic or heterocyclic amines or aminophenols. An oxidizing agent and a catalyst catalyst are preferably added to the dye bath.
Dyeing is usually done at 35 to 65 ° C and pH 3.5 to 4 for about two to six hours depending on the materials to be dyed. Then comes a development â. air at room temperature.
The invention is explained below with the aid of examples <I> Example 1 </I> 3 g of anhydrous sodium carbonate 3 g of trisodium phosphate 1 g of wetting agent are dissolved in one liter of water. choice, known per se.
A piece of cotton is treated for one hour in this bath, heated to 60o C, then rinsed.
The oxidizing mordanting bath is prepared by dissolving 30 g of sodium chloride in a liter of water 20 g of sodium persulfate 1 g of sodium chlorite 2 g of copper chloride 1 ml of 660 Bé sulfuric acid 0 , 1 g of ammonium vanadate pH 2; the part is kept in this bath overnight at 350 ° C. and it is wrung out.
The actual dye bath in which the part is subsequently treated is composed of (per liter) 30 g of aniline salt 10 g of sodium diphenylamino-para-sulfamate 10 g of sodium chlorate 10 g of ammonium sulfate .
It is treated overnight at 400 C. It is oxidized in air at 201 C.
The dyed part is washed in a bath containing per liter 6 g of flake soap 1 g of anhydrous sodium carbonate 2 ml of sulphonated alcohol for one hour at 50 C, rinsed, washed again in a bath containing 2 ml of sulfonated alcohol at 300 C for 30 minutes and rinsed again.
The part thus treated is of a beautiful black color, resistant to light, washing and rubbing.
A part tinted identically, but without the addition of chlorite to the etching bath, shows a reddish reflection. <I> Example 2 </I> A piece of wool is treated in the following baths (per liter of solution) <I> 10) Alkaline preparation </I> 5 g of anhydrous sodium carbonate 1 g of trisodium phosphate 0 , 6 g of powder detergent 2 ml of an equalizer.
Temperature 45-55 C, pH 10, 1 hour 15 minutes. 2 (l) <I> Oxidizing etching </I> 20 g of sodium chloride 20 g of ammonium persulfate 0.5 g of sodium chlorite 1 ml of sulfuric acid at 66o Bé 2 g of cupric chloride 0, 1 g of ammonium vanadate, the pH of the solution is established at 2, the reaction is carried out at 35.1 ° C. overnight, then the mixture is filtered off without rinsing.
<I> 30) Dye bath </I> 10 g of aniline salt 10 g of sodium diphenylamino-para-sulfamate 1 g of para-phenylenediamine 1 g of meta-cresylenediamine 10 g of sodium chlorate 10 g of ammonium salt 0.001 g of ammonium vanadate 2 ml of equalizer.
Treated at 35-60 C, pH 4, 2 hours, and oxidized overnight at 180 C. 4) <I> Washing bath </I> 3 ml of sulfonated alcohol at 40 ° C, 1 hour, rinse. <I> 50) Washing bath </I> 3 ml of sulfonated alcohol 1 g of baking soda 400 C for 2 hours; rinse; the pH of this bath is established at 7.
It ends with a final rinse with 0.5 g of a detergent 0.25 g of hydrosulphite at 35 ° C. for 30 minutes. Rinse with clean water. The piece is dyed a beautiful deep black. By operating under identical conditions, but without adding chlorite to the mordanting bath, a black dye is obtained showing a reddish reflection.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR832992A FR1288037A (en) | 1960-07-15 | 1960-07-15 | New application of full baths of sodium diphenylamino-para-sulfamate to black out animal, vegetable and synthetic fibers and fur skins |
| FR867718A FR80089E (en) | 1961-07-11 | 1961-07-11 | New application of full baths of sodium diphenyl-amino-para-sulfamate to dye animal, plant, synthetic and fur skins black |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CH822861A4 CH822861A4 (en) | 1964-11-30 |
| CH388904A true CH388904A (en) | 1965-06-30 |
Family
ID=26186802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH822861A CH388904A (en) | 1960-07-15 | 1961-07-13 | Process for dyeing textile fibers black with sodium diphenylamino-para-sulfamate with prior oxidation |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH388904A (en) |
-
1961
- 1961-07-13 CH CH822861A patent/CH388904A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH822861A4 (en) | 1964-11-30 |
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