CH139380A - Process for the preparation of a vat dye of the anthanthrone series. - Google Patents
Process for the preparation of a vat dye of the anthanthrone series.Info
- Publication number
- CH139380A CH139380A CH139380DA CH139380A CH 139380 A CH139380 A CH 139380A CH 139380D A CH139380D A CH 139380DA CH 139380 A CH139380 A CH 139380A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- gray
- mol
- sulfuric acid
- beautiful
- Prior art date
Links
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- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Küpenfarbstoffes der Anthanthronreihe. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Darstellung eines neuen Küpenfarbstoffes der Anthanthronreihe, da durch gekennzeichnet, dass' man<B>1</B> Mol. 2 .7-Dihalogenanthanthron,
hergestellt aus <B>1.</B> l'-Dinaplityl-4. 4'-ähallogen-8 .8'-dic*- bonsäure mit 2 Mel. a-Aminoanthrachinon bei Gegenwart von säurebindenden Mitteln und katalytisch wirkenden Substanzen kon densiert.
Als Katalysatoren kann ma.n zum Bei spiel geringe Mengen Kupfer oder seineVer- bindungen und Salze nehmen.
<I>Beispiel:</I> 4,6 Gewichtsteile 2.7-Dibromantha#nthron hergestellt aus<B>1 .</B> l'-Dinaphtyl-4. 4' dihrom- 8. 8'-diearbon-säure werden in<B>150</B> Gewiellts- teilen Naphtalin mit<B>5</B> Gewichtsteilen a-Aminoanthraellinon, 2 1/2 Gewiahtsteilen wasserfreiem Natriumacetat, <B>0,5</B> Gewichts teilen Kupferacetat, 4 bis<B>5</B> Stunden 'unter Rühren zum Kochen erhitzt.
Man erhält so vialettgraue mikroskopische NädeleUen, die sich in konzentrierter kaIter Schwefelsäure mit grüner Farbe (hlaustichiger als Dibrom- anthanthron) lösen, welche bei Zusatz, von Paraforma.Idel-iyd in ein schönes blau um schlägt.
Giesst man die grüne schwefelsaure Lösung in Wasser, so. erhält man violette Flocken, die mit Natronlauge und Hydrosul- fit eine klare weinrote Küpe geben, aus welcher Baumwolle nach dein Verhängen schön violettgrau mit sehr guten Echtheits eigenschaften angefärbt wird.
Process for the preparation of a vat dye of the anthanthrone series. The subject of the present patent is a process for the preparation of a new vat dye of the anthanthrone series, characterized in that 'one <B> 1 </B> mol. 2 .7-Dihalogenanthanthron,
made from <B> 1. </B> l'-Dinaplityl-4. 4'-Ähallogen-8 .8'-dic * - bonsäure with 2 Mel. A-Aminoanthraquinone condenses in the presence of acid-binding agents and catalytically active substances.
For example, small amounts of copper or its compounds and salts can be used as catalysts.
<I> Example: </I> 4.6 parts by weight of 2.7-dibromantha # nthron made from <B> 1. </B> l'-dinaphthyl-4. 4 'dihrom- 8. 8'-diarboxylic acid are mixed in <B> 150 </B> parts by weight of naphthalene with <B> 5 </B> parts by weight of α-aminoanthraellinone, 2 1/2 parts by weight of anhydrous sodium acetate, <B > 0.5 </B> parts by weight copper acetate, heated to a boil for 4 to <B> 5 </B> hours while stirring.
This gives vialet-gray microscopic needles which dissolve in concentrated cold sulfuric acid with a green color (more bluish than dibromanthanthrone), which turns into a beautiful blue with the addition of Paraforma.Idel-iyd.
If you pour the green sulfuric acid solution into water, so. violet flakes are obtained which, with caustic soda and hydrosulfite, give a clear wine-red vat, from which cotton is dyed a beautiful violet-gray with very good fastness properties after being hung.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139380X | 1927-03-08 | ||
CH133807T | 1928-02-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139380A true CH139380A (en) | 1930-04-15 |
Family
ID=25712180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139380D CH139380A (en) | 1927-03-08 | 1928-02-24 | Process for the preparation of a vat dye of the anthanthrone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139380A (en) |
-
1928
- 1928-02-24 CH CH139380D patent/CH139380A/en unknown
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