AT76217B - Process for the production of a sulfur dye. - Google Patents
Process for the production of a sulfur dye.Info
- Publication number
- AT76217B AT76217B AT76217DA AT76217B AT 76217 B AT76217 B AT 76217B AT 76217D A AT76217D A AT 76217DA AT 76217 B AT76217 B AT 76217B
- Authority
- AT
- Austria
- Prior art keywords
- sulfur
- production
- sulfur dye
- dye
- oxylignon
- Prior art date
Links
Landscapes
- Coloring Foods And Improving Nutritive Qualities (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung ilung eines Schwefelfarbstoffes.
Oxylignin bzw. Oxylignon werden durch Abspaltung der Sulfonsäuregruppen in ligninsulfonsanren bzw. Hgnonsulfonsauren Salzen, beispielsweise durch Schmelzen mit Alkali hergestellt.
Die vorliegende Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Schwefelfarbstoffes aus Oxylignin bzw. Oxylignon. Das Verfahren besteht darin, dass Oxy-
EMI1.1
Herstellung von Schwofelfarbstoffe geeigneten schwefelhaltigen Stoffen erhitzt wird. Hiebei kann man zweckmässig in folgender Weise verfahren :
30 g Oxylignin bzw. Oxylignon,
100 g Schwefelnatrium, 35 y Schwefetblumen,
100 9 Wasser werden zusammengemischt und erhitzt, wobei die Temperatur bei 110 bis 1150 wahre 20 Minuten erhalten wird. Die erhaltene Masse wird in Wasser gelöst und die Lösung wird mit Säure, z. B. Salzsäure, sauer gemacht, da der Farbstoff wie ein grauschwarzer oder graulicher Niederschlag herausfällt, der von der Lösung getrennt, gewaschen und getrocknet wird.
Der betreffende Schwefelfarbstoff wird zur Färbung auf dieselbe Weise wie gewöhnliche Schwefelfarbstoffe verwendet, d. h. in warmer Lösung von Allta) isulfidcn gelöst.
Die oben erwähnte, bei der Erhitzung erhaltene Masse kann auch unmittelbar bei Färbung Verwendung finden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of a sulfur dye.
Oxylignin and oxylignon are produced by splitting off the sulfonic acid groups in lignosulfonic acid or Hgnonsulfonic acid salts, for example by melting with alkali.
The present invention relates to a process for the production of a sulfur dye from oxylignin or oxylignon. The procedure is that oxy-
EMI1.1
Production of sulfur-containing substances is heated to suitable sulfur-containing substances. One can proceed in the following way:
30 g oxylignin or oxylignon,
100 g sulfur sodium, 35 y sulfur flowers,
100 9 water are mixed together and heated, the temperature being maintained at 110 to 1150 true 20 minutes. The resulting mass is dissolved in water and the solution is acidified, e.g. B. hydrochloric acid, made acidic, since the dye falls out like a grayish black or grayish precipitate, which is separated from the solution, washed and dried.
The sulfur dye in question is used for coloring in the same way as ordinary sulfur dyes; H. dissolved in a warm solution of allta) isulphide.
The above-mentioned mass obtained on heating can also be used directly for coloring.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE76217X | 1916-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT76217B true AT76217B (en) | 1919-04-25 |
Family
ID=20271855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT76217D AT76217B (en) | 1916-01-20 | 1916-12-29 | Process for the production of a sulfur dye. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT76217B (en) |
-
1916
- 1916-12-29 AT AT76217D patent/AT76217B/en active
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