AT57709B - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- AT57709B AT57709B AT57709DA AT57709B AT 57709 B AT57709 B AT 57709B AT 57709D A AT57709D A AT 57709DA AT 57709 B AT57709 B AT 57709B
- Authority
- AT
- Austria
- Prior art keywords
- dye
- preparation
- azo dye
- sulfonic acid
- acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 3
- 239000000987 azo dye Substances 0.000 title description 2
- 239000000975 dye Substances 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- RSCRGMCYBCTJGF-UHFFFAOYSA-N 3-amino-5-chloro-4-methylbenzenesulfonic acid Chemical compound CC1=C(N)C=C(S(O)(=O)=O)C=C1Cl RSCRGMCYBCTJGF-UHFFFAOYSA-N 0.000 description 2
- PPVRMPPLECDING-UHFFFAOYSA-N 4-[(4-aminophenyl)diazenyl]benzenesulfonic acid Chemical compound C1=CC(N)=CC=C1N=NC1=CC=C(S(O)(=O)=O)C=C1 PPVRMPPLECDING-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- RZXMPPFPUUCRFN-UHFFFAOYSA-N p-toluidine Chemical compound CC1=CC=C(N)C=C1 RZXMPPFPUUCRFN-UHFFFAOYSA-N 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Coloring (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung eines Azofarbstoffes.
In der französischen Patentschrift Nr. 402126 ist unter anderem ein Disazofarbstoff beschrieben, der dadurch erhalten wird, dass man die Diazoverbindung aus Aminoazobenzolsulfosäure mit Benzoyl-2. 5-aminonaphtol-7-sulfosäure vereinigt. Das Produkt stellt einen blauroten Bsumwollfarbstoff von bemerkenswerter Lichtechtheit dar.
Es wurde nun die Beobachtung gemacht, dass man zu einem technisch wertvolleren, gelberen Farbstoff gelangt, wenn man die 3-Chlor-2-toluidin-5-sulfosäure als Anfangskomponente vei wendet. Dieses Ergebnis war überraschend, da die Homologen und Substitutionsprodukte der Aminoazobenzolsulfosäure in der Regel blauere Nuancen liefern, als die Grundtubstanz selbst.
Der neue Farbstoff zeichnet sich vor dem bekannten analogen Farbstoff auch noch durch erhöhte Klarheit und grössere Lichtechtheit aus.
Beispiel.
325-5 Teile des Monoazofarbstoffes, den man aus 3-Chlor-2-toluidin-5-sulfosäure und Monomethylanilin-#-sulfosäure nach dem Verfahren des D. R. P. Nr. 131860 erhält, werden mit 69 Teilen Natriumnitrit und Salzsäure diazotiert und in essigsaurer Lösung mit 365 Teilen Benzoyl-2. 5-aminonaphtol-7-sulfosäure vereinigt. Nach Beendigung der Kupplung wird aufgewärmt und der Farbstoff ausgesalzen. Er färbt Baumwolle in lichtechten roten Nuancen an.
EMI1.1
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of an azo dye.
In French patent specification No. 402126, inter alia, a disazo dye is described which is obtained by combining the diazo compound from aminoazobenzenesulfonic acid with benzoyl-2. 5-aminonaphthol-7-sulfonic acid combined. The product is a blue-red cotton wool dye of remarkable lightfastness.
It has now been observed that a technically more valuable, yellower dye is obtained if 3-chloro-2-toluidine-5-sulfonic acid is used as the starting component. This result was surprising, since the homologues and substitution products of the aminoazobenzenesulfonic acid usually provide bluer shades than the basic tube substance itself.
The new dye is distinguished from the known analog dye by increased clarity and greater lightfastness.
Example.
325-5 parts of the monoazo dye, which is obtained from 3-chloro-2-toluidine-5-sulfonic acid and monomethylaniline - # - sulfonic acid by the method of DRP No. 131860, are diazotized with 69 parts of sodium nitrite and hydrochloric acid and mixed with acetic acid solution 365 parts of benzoyl-2. 5-aminonaphthol-7-sulfonic acid combined. After the coupling has ended, the mixture is warmed up and the dye is salted out. It dyes cotton in lightfast red shades.
EMI1.1
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE57709X | 1910-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT57709B true AT57709B (en) | 1913-02-10 |
Family
ID=5629261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT57709D AT57709B (en) | 1910-12-10 | 1911-10-16 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT57709B (en) |
-
1911
- 1911-10-16 AT AT57709D patent/AT57709B/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT57709B (en) | Process for the preparation of an azo dye. | |
| AT56745B (en) | Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lakes. | |
| AT68096B (en) | Process for the preparation of developer dyes. | |
| AT48689B (en) | Process for the preparation of a water- and oil-insoluble disazo dye. | |
| AT40679B (en) | Process for the production of a red monoazo dye, particularly suitable for the production of blue-red colored lakes. | |
| AT99416B (en) | Process for the preparation of secondary disazo dyes. | |
| AT22661B (en) | Process for the preparation of yellow disazo dyes for wool. | |
| AT37561B (en) | Process for the preparation of secondary disazo dyes. | |
| AT40173B (en) | Process for the preparation of trisazo dyes. | |
| DE272975C (en) | ||
| AT47156B (en) | Process for the preparation of a purple disazo dye. | |
| DE653024C (en) | Process for the production of azo dyes | |
| DE632135C (en) | Process for the preparation of disazo dyes | |
| AT61470B (en) | Process for the preparation of black cotton dyes. | |
| AT112607B (en) | Process for the production of azo dyes. | |
| DE663550C (en) | Process for the production of azo dyes | |
| CH209103A (en) | Process for the preparation of a green trisazo dye. | |
| CH198060A (en) | Process for the preparation of a polyazo dye. | |
| CH124271A (en) | Process for the production of a new dye. | |
| CH129001A (en) | Process for the preparation of an azo dye. | |
| CH212995A (en) | Process for the preparation of a hexakisazo dye. | |
| CH131818A (en) | Process for the preparation of a new trisazo dye. | |
| CH135955A (en) | Process for the preparation of a new trisazo dye. | |
| CH137390A (en) | Process for the preparation of a trisazo dye. | |
| CH170090A (en) | Process for the preparation of an azo dye. |