DE42382C - Process for the preparation of a red azo dye from naphtionic salt - Google Patents
Process for the preparation of a red azo dye from naphtionic saltInfo
- Publication number
- DE42382C DE42382C DENDAT42382D DE42382DA DE42382C DE 42382 C DE42382 C DE 42382C DE NDAT42382 D DENDAT42382 D DE NDAT42382D DE 42382D A DE42382D A DE 42382DA DE 42382 C DE42382 C DE 42382C
- Authority
- DE
- Germany
- Prior art keywords
- salt
- preparation
- naphtionic
- azo dye
- red azo
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 150000003839 salts Chemical class 0.000 title claims description 5
- 239000011780 sodium chloride Substances 0.000 title claims description 5
- 239000000987 azo dye Substances 0.000 title description 2
- 238000000034 method Methods 0.000 title description 2
- 238000002360 preparation method Methods 0.000 title description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M Sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 235000010288 sodium nitrite Nutrition 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000000975 dye Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VXMKYRQZQXVKGB-CWWHNZPOSA-N Tannin Chemical compound O([C@H]1[C@H]([C@@H]2OC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)O[C@H]([C@H]2O)O1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 VXMKYRQZQXVKGB-CWWHNZPOSA-N 0.000 description 1
- 210000002268 Wool Anatomy 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/16—Naphthol-sulfonic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 22: Farbstoffe, Firnisse, Lacke.CLASS 22: dyes, varnishes, lacquers.
H. WICHELHAUS und C. KROHN in BERLIN. Verfahren zur Darstellung eines rothen AzofarbstofFes aus Naphtionsalz. H. WICHELHAUS and C. KROHN in BERLIN. Process for the preparation of a red azo dye from naphthione salt.
Patentirt im Deutschen Reiche vom l. Juni 1887 ab.Patented in the German Empire from l. June 1887.
Zur Darstellung des Farbstoffes werden 2 Molecule Naphtionsalz mit 1 Molecül Natriumnitrit in Wasser gelöst und unter Abkühlung mit ι Molecül verdünnter Schwefelsäure versetzt. Nach 2 bis 3 Stunden ist die Reaction beendet. Es entsteht das saure Natriumsalz der Amidoazonaphtalindisulfosäure nach folgender Gleichung:To produce the dye, 2 molecules of naphthonium salt with 1 molecule of sodium nitrite are used dissolved in water and cooled with ι Molecül diluted sulfuric acid offset. The reaction has ended after 2 to 3 hours. The acid sodium salt is formed of amidoazonaphthalene disulfonic acid according to the following equation:
2 C10 H6/ *****Na + Na NO, + H2 SO, 2 C 10 H 6 / ***** Na + Na NO, + H 2 SO,
H* < SO*Na H * < SO * Well
+ Na2 SO4 + 2 H2 O.
Man setzt zur Ueberführung in das neutrale Salz die berechnete Menge Soda zu und kann
die Lösung dann sofort zum Färben benutzen; auch kann man den Farbstoff in fester Form
erhalten durch Aussalzen oder Eindampfen. Das neutrale amidoazonaphtalindisulfosäure Natrium
färbt Seide, Wolle und mit Thonerde oder Tannin gebeizte Baumwolle ziegelroth. Die Farbe zeichnet sich durch grofse Lichtbeständigkeit
aus. + Na 2 SO 4 + 2 H 2 O.
The calculated amount of soda is added to convert it into the neutral salt and the solution can then be used immediately for dyeing; the dyestuff can also be obtained in solid form by salting out or evaporation. The neutral amidoazonaphthalene disulfonic acid sodium dyes silk, wool and cotton stained with clay or tannin brick-red. The color is characterized by great lightfastness.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE42382C true DE42382C (en) |
Family
ID=317783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT42382D Expired - Lifetime DE42382C (en) | Process for the preparation of a red azo dye from naphtionic salt |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE42382C (en) |
-
0
- DE DENDAT42382D patent/DE42382C/en not_active Expired - Lifetime
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