CH268758A - Process for the preparation of a new disazo dye. - Google Patents
Process for the preparation of a new disazo dye.Info
- Publication number
- CH268758A CH268758A CH268758DA CH268758A CH 268758 A CH268758 A CH 268758A CH 268758D A CH268758D A CH 268758DA CH 268758 A CH268758 A CH 268758A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfuric acid
- preparation
- coupled
- way
- new
- 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
- C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
- C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
- C09B62/78—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring with other reactive groups
- C09B62/82—Azo dyes
- C09B62/83—Disazo or polyazo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. ?63980. Verfahren zur Herstellung eines neuen Disazofarbatoffes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines neuen Disazofarbstoffes, welches dadurch gekenn- zeichiiet ist, dass man p-Aminophenyl-#)-oxy- äthyl-äther, ein >1-',ulfatierungsmittel, ein Diazo- tierinigsmittel,
a-Naplithylamin und o-Benzyl- phenol derart zusaiumen umsetzt, da.ss die Oxyalkylgruppe in die entsprechende Schwe- felsäureester-Gruppe übergeführt, die Amino- aryl-oxyalkylät.her-Verbindung dianotiert und in der p-Stellung zur Aminogruppe des a- Naplithviamins gekuppelt wird,
und die auf diese Weise gebildete Aminoazo-Verbindung weiter dianotiert und in der p-Stellung zur Hydroxylg-ruppe des o-Benzylphenols gekup pelt wird.
Der nette Farbstoff ist ein dunkelbraunes Pulver, das sich in Wasser unter Bildung einer orangen Lösung und in konz. Schwefelsäure unter Bildung einer grünlichblauen Lösung löst.
Als Sulfatierungsinittel kann man Schwe felsäure und als Diazotierungsmittel salpetrige Säure verwenden.
Die Oxyalkylgruppe kann vor oder nach den Kupplungsreaktionen oder zwisehen den beiden Kupplungsreaktionen mit. Schwefel säure in die entspreelieiide Scliwefelsäureester- (Truppe übergeführt werden.
Beispiel: Man dianotiert ?3,3 Teile p-Aminophenyl- iY-oxyäthyläther-scliwefelsäureester (auch p- Aminophenyl - fl - sulfatoäthyläther genannt), kuppelt die Diazov erbindung mit 14,3 Teilen a-Naphthy lamin und dianotiert die erhaltene Aniinomonoazo-Vei-bindun-, in der bekannten eise (siehe Beispiel 5 ,des brit. Patentes Nr. 455643).
Hierauf wird eine Suspension der auf diese Weise erhaltenen Diazoazover- bindting in 400 Teilen Wasser von 0-50 C in eine ähnlich abgekühlte und kräftig gerührte Lösung von 18,4 Teilen o-Benzylphenol, 4 Tei len Natriiimhydroxyd und l.? Teilen wasser freiem Natriumcarbonat in 400 Teilen Wasser eingetragen.
Das Gemisch wird während eini gen Stunden gerührt und dann. mit. einer l0o/oigen Lösung von Kochsalz (Gew. pro Vo lumen) ausgesalzt. Der abgeschiedene Disazo- farbstoff wird abfiltriert und bei 35-400 C getrocknet.
<B> Additional patent </B> to main patent no.? 63980. Process for the production of a new disazo carbate. The subject of the present patent is a process for the production of a new disazo dye, which is characterized in that p-aminophenyl - #) - oxyethyl ether, a> 1 - ', sulfating agent, a diazotizing agent,
a-naplithylamine and o-benzylphenol are reacted together in such a way that the oxyalkyl group is converted into the corresponding sulfuric acid ester group, the aminoaryl oxyalkyl ether compound is dianotized and in the p-position to the amino group of the a- Naplithviamins is coupled,
and the aminoazo compound formed in this way is further dianotized and coupled in the p-position to the hydroxyl group of the o-benzylphenol.
The nice dye is a dark brown powder that dissolves in water to form an orange solution and in conc. Sulfuric acid dissolves to form a greenish blue solution.
Sulfating acid can be used as sulfating agent and nitrous acid can be used as diazotizing agent.
The oxyalkyl group can be used before or after the coupling reactions or between the two coupling reactions. Sulfuric acid can be converted into the corresponding sulfuric acid ester group.
Example: 3.3 parts of p-aminophenyl-iY-oxyäthyläther-sulfuric acid ester (also called p-aminophenyl - fl - sulfatoethylether) are dianotized, the diazo compound is coupled with 14.3 parts of a-naphthylamine and the resulting Aniinomonoazo-Vei is dianotized -bindun-, in the known manner (see Example 5, British Patent No. 455643).
A suspension of the diazoazo compound obtained in this way in 400 parts of water at 0-50 ° C. in a similarly cooled and vigorously stirred solution of 18.4 parts of o-benzylphenol, 4 parts of sodium hydroxide and 1.? Parts of anhydrous sodium carbonate entered in 400 parts of water.
The mixture is stirred for a few hours and then. With. a 10% solution of common salt (weight per volume). The deposited disazo dye is filtered off and dried at 35-400.degree.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB268758X | 1946-03-11 | ||
CH263980T | 1947-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH268758A true CH268758A (en) | 1950-05-31 |
Family
ID=25730699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH268758D CH268758A (en) | 1946-03-11 | 1947-03-10 | Process for the preparation of a new disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH268758A (en) |
-
1947
- 1947-03-10 CH CH268758D patent/CH268758A/en unknown
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