DE117819C - - Google Patents
Info
- Publication number
- DE117819C DE117819C DENDAT117819D DE117819DA DE117819C DE 117819 C DE117819 C DE 117819C DE NDAT117819 D DENDAT117819 D DE NDAT117819D DE 117819D A DE117819D A DE 117819DA DE 117819 C DE117819 C DE 117819C
- Authority
- DE
- Germany
- Prior art keywords
- dinitronaphtalin
- brown
- black
- cotton
- friedländer
- 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.)
- Active
Links
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- -1 Sodium sulfur Chemical compound 0.000 claims 1
- 239000003086 colorant Substances 0.000 claims 1
- 238000004040 coloring Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000002035 prolonged Effects 0.000 claims 1
- 239000003638 reducing agent Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N Sodium sulfide Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000001049 brown dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011734 sodium Substances 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
- C09B49/00—Sulfur dyes
- C09B49/02—Sulfur dyes from nitro compounds of the benzene, naphthalene or anthracene series
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
30 Theile fein gepulvertes A1 a4-Dinitronaphtalin werden allmählich in eine etwa 500 warme Lösung von 210 Theilen Schwefelnatrium (Na2 S -f- 9 H2 O) in 50 Theilen Wasser eingetragen, dann so lange bei Wasserbadtemperatur erwärmt, bis alles gelöst ist und hierauf zur Trockne verdampft. Der verbleibende Rückstand wird alsdann auf Bleche gelegt und in einem Ofen 5 bis 6 Stunden auf 160 bis i8o° erhitzt, bis er vollkommen hart geworden ist. Man erhält so eine dunkelbraune Masse, die nach dem Pulverisiren ohne Weiteres zum Färben Verwendung finden kann; sie ist in Wasser leicht und mit tiefbrauner Farbe löslich; aus dieser Lösung wird der Farbstoff durch Ansäuern als schwarzbrauner amorpher Niederschlag gefällt; er ist in reinem Wrasser unlöslich, löst sich aber leicht in Aetzalkalien, Soda und Ammoniak.30 parts of finely powdered 4 A 1 a -Dinitronaphtalin gradually in an approximately 50 0 warm solution of 210 parts of sodium sulphide (Na 2 S -f 9 H 2 O) in 50 parts of water was added, then heated at water bath temperature until everything is dissolved and then evaporated to dryness. The remaining residue is then placed on metal sheets and heated in an oven at 160 to 180 ° for 5 to 6 hours until it has hardened completely. This gives a dark brown mass which, after pulverization, can easily be used for dyeing; it is easily soluble in water and has a deep brown color; the dye is precipitated from this solution as a black-brown amorphous precipitate by acidification; it is insoluble in pure r W ater, but dissolves readily in alkalies, soda and ammonia.
Patenτ-AnsPRUch:Patent claim:
Verfahren zur Darstellung eines braunen Baumwollfarbstoffs, darin bestehend, dafs man die wässerige Lösung von αχ α4-Dinitronaphtalin und Schwefelnatrium zur Trockne verdampft und den verbleibenden Rückstand noch längere Zeit auf höhere Temperatur erhitzt.Process for the preparation of a brown dye cotton, consisting in one That the aqueous solution of α χ α 4 -Dinitronaphtalin and sodium sulphide evaporated to dryness and the remaining residue is heated for some time to a higher temperature.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE117819C true DE117819C (en) |
Family
ID=387059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT117819D Active DE117819C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE117819C (en) |
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0
- DE DENDAT117819D patent/DE117819C/de active Active
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