AT29066B - Process for the preparation of stain-coloring o-oxyazo dyes. - Google Patents
Process for the preparation of stain-coloring o-oxyazo dyes.Info
- Publication number
- AT29066B AT29066B AT29066DA AT29066B AT 29066 B AT29066 B AT 29066B AT 29066D A AT29066D A AT 29066DA AT 29066 B AT29066 B AT 29066B
- Authority
- AT
- Austria
- Prior art keywords
- stain
- coloring
- preparation
- dyes
- oxyazo
- Prior art date
Links
- 239000000975 dye Substances 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 4
- 238000004040 coloring Methods 0.000 title description 2
- 238000002360 preparation method Methods 0.000 title description 2
- 150000003460 sulfonic acids Chemical class 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims 2
- 229910052736 halogen Inorganic materials 0.000 claims 2
- 150000002367 halogens Chemical group 0.000 claims 2
- 238000006467 substitution reaction Methods 0.000 claims 2
- 150000008049 diazo compounds Chemical class 0.000 claims 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Coloring (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung beizenfärbender o-Oxyazofarbstoffe.
Bei weiterer Ausbildung des in dem Stamm-Patente Nr. 28991 beschriebenen Ver- fahrens wurde gefunden, dass anstatt der Sulfosäuren des p-Nitro-o-amidophenols bzw.
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fahren schliesst sich dem im Stamm-Patente beschriebenen an.
Beispiel I : Der aus 20 kg der o-Amido-p-nitrosalizylsäure und 25 kg 1. 5-Naphtolsulfonsäure gewonnene Farbstoff wird in verdünnter Lösung mit 60 kg Schwefelnatrium langsam erwärmt, bis die Reduktion beendigt ist. Der entstandene Farbstoff wird ausgesalzen, abfiltriert, gepresst und getrocknet. Er erzeugt auf Wolle in saurem Bade bordcaux- farben Nuancen, welche durch Nachchromiercn tiefblauschwarz worden.
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aus. Man lässt dieselbe zu einer Lösung von 35 kg des Natriumsalzes der -Naphtoldisulfo- säure R einlaufen, die durch Zusatz von Soda bis zum Schlusse alkalisch gehalten wird.
Nach beendeter Kupplung wird der Farbstoff ausgesalzen, abgesaugt und zur Abspaltung
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<Desc/Clms Page number 2>
kombiniert mit 2. 6-Naphtolsulfosäure und spaltet die Azetylgruppo wieder ab, so erhält man einen Farbstoff, dessen diroltto Färbung bordoauxtarbcn ist und durch Nachchromieren violettschwarz wird.
<Desc / Clms Page number 1>
Process for the preparation of stain-coloring o-oxyazo dyes.
In the further development of the process described in the parent patent no. 28991, it was found that instead of the sulfonic acids of p-nitro-o-amidophenol or
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driving follows on from that described in the parent patents.
Example I: The dye obtained from 20 kg of o-amido-p-nitrosalicylic acid and 25 kg of 1,5-naphthol sulfonic acid is slowly warmed in a dilute solution with 60 kg of sodium sulfur until the reduction is complete. The resulting dye is salted out, filtered off, pressed and dried. On wool in an acidic bath, he creates bordeaux-colored nuances which, after chrome-plating, become deep blue-black.
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out. The same is allowed to run into a solution of 35 kg of the sodium salt of -naphtholedisulfonic acid R, which is kept alkaline until the end by adding soda.
When the coupling is complete, the dye is salted out, filtered off with suction and split off
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<Desc / Clms Page number 2>
combined with 2, 6-naphthol sulfonic acid and splitting off the acetyl group again, a dye is obtained whose direct color is bordoaux color and which becomes violet-black after chromium plating.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1903172731D DE172731C (en) | 1903-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT29066B true AT29066B (en) | 1907-07-10 |
Family
ID=5690206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT29066D AT29066B (en) | 1903-04-09 | 1906-05-14 | Process for the preparation of stain-coloring o-oxyazo dyes. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT29066B (en) |
-
1906
- 1906-05-14 AT AT29066D patent/AT29066B/en active
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