CH257114A - Process for the production of a vat dye. - Google Patents
Process for the production of a vat dye.Info
- Publication number
- CH257114A CH257114A CH257114DA CH257114A CH 257114 A CH257114 A CH 257114A CH 257114D A CH257114D A CH 257114DA CH 257114 A CH257114 A CH 257114A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- vat dye
- dye
- vat
- amino
- Prior art date
Links
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
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/48—Anthrimides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung. eines Küpenfarbstoffes. Es wurde gefunden, dass ein wertoller Küpenfarbstoff hergestellt werden kann, wenn man ein Mol 2,7-Dihalogenan.thrachi- non mit 2 Mal 1-A.mino-5-benzoylamino- anIbrachinon umsetzt.
Der neue Farbstoff löst sich in konzen trierter Schwefelsäure mit blaugrauer Farbe und färbt p'fla.nzliche Fasern aus braunroter Küpe in kräftigen bordeauxroten Tönen von guter Echtheit.
Die dem vorliegenden Verfahren als Aus- ,;angsstoffe dienenden Dihalogenanthra:chi- none können als Halogenatome beispiels- weise Chlor oder Brom enthalten. Es kom men somit a)ls Ausgangsstoffe beispielsweise 2,7-Dichloranthrachinon und 2,7-Dibrom- anthraehinon in - Betracht.
Die Umsetzung kann beispielsweise in hochsiedenden indif ferenten Lösungs.mittel'n, wie Nitrobenzol oder Naphthalin, durchgeführt werden, wo bei zur Umsetzung zweckmässig säurebindende Mittel, beisp:ieIsweise Alk aliearbona.te, sowie katalytisch wirkende Mittel, beispielsweise Kupfer und Kupferverbindungen, insbeson- dere Kuferacetat, zugesetzt werden können.
Gegenüber der bekannten Verbindung der Formel
EMI0001.0035
die bisher als Zwischenprodukt zur Verwen dung gelangte, aber, wie festgestellt wurde, sich auch als Küpenfarbstoff zum Färben von pflanzlichen Fasern, wie Baumwolle, Leinen, Kunstseide und Zellwolle aus rege- nerierter Cellulose :eignet, besitzt das neue 2,7 - Derivat den überraschenden Vorteil, wesentlich stärkere Drucke auf Baumwolle und ähnliche Fasern zu liefern.
Mischungen des neuen 2,7-Derivats mit; dem bekannten 2,6-Isomeren behalten diesen Vorteil, sofern sie nicht wesentlich mehr als die Hälfte an 2,6-Derivat enthalten.
<I>Beispiel:</I> 27 Gewichtsteile 2,7-Dichloranthrachinon, 69 Gewichtsteile 1-Amino-5-benzoylamino- anthrachinon, 60 Gewichtsteile wasserfreies Natriumcarbonat, 2 Gewichtsteile Kupfer- acetat und<B>150</B> Crewicht$teifb Nitrpbenzol werden während 36 Stunden zum Sieden er hitzt.
Nach dem Abkühlen auf Raumtempe ratur wird der gebildete Farbstoff abfil- triert, mit Nitrobenzol, Alkohol und Wässer gewaschen und getroeknet.
Method of manufacture. of a vat dye. It has been found that a valuable vat dye can be produced if one mole of 2,7-dihalogenan.thrachinone is reacted with 2 times 1-amino-5-benzoylaminoanibrachinone.
The new dye dissolves in concentrated sulfuric acid with a blue-gray color and dyes flaky fibers from a brown-red vat in strong, burgundy shades of good fastness.
The dihaloanthraquinones used as starting materials for the present process can contain, for example, chlorine or bromine as halogen atoms. Thus, a) As starting materials, for example 2,7-dichloroanthraquinone and 2,7-dibromanthraehinone come into consideration.
The reaction can, for example, be carried out in high-boiling indifferent solvents, such as nitrobenzene or naphthalene, where acid-binding agents, for example alkali carbonates, and catalytically active agents, for example copper and copper compounds, in particular whose buyer acetate can be added.
Compared to the known compound of the formula
EMI0001.0035
which was previously used as an intermediate product, but, as has been found, is also suitable as a vat dye for dyeing vegetable fibers such as cotton, linen, rayon and rayon made from regenerated cellulose: the new 2,7 - derivative has the surprising advantage of providing much stronger prints on cotton and similar fibers.
Mixtures of the new 2,7-derivative with; the known 2,6-isomers retain this advantage, provided they do not contain significantly more than half of the 2,6-derivative.
<I> Example: </I> 27 parts by weight of 2,7-dichloroanthraquinone, 69 parts by weight of 1-amino-5-benzoylamino-anthraquinone, 60 parts by weight of anhydrous sodium carbonate, 2 parts by weight of copper acetate and <B> 150 </B> crew not $ Some of the nitrobenzene are heated to the boil for 36 hours.
After cooling to room temperature, the dye formed is filtered off, washed with nitrobenzene, alcohol and water and dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH257114T | 1947-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH257114A true CH257114A (en) | 1948-09-30 |
Family
ID=4472021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH257114D CH257114A (en) | 1947-07-17 | 1947-07-17 | Process for the production of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH257114A (en) |
-
1947
- 1947-07-17 CH CH257114D patent/CH257114A/en unknown
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